CN106589953A - Low-filling amount high-conductivity liquid silicone rubber composition - Google Patents
Low-filling amount high-conductivity liquid silicone rubber composition Download PDFInfo
- Publication number
- CN106589953A CN106589953A CN201611102948.3A CN201611102948A CN106589953A CN 106589953 A CN106589953 A CN 106589953A CN 201611102948 A CN201611102948 A CN 201611102948A CN 106589953 A CN106589953 A CN 106589953A
- Authority
- CN
- China
- Prior art keywords
- parts
- silver
- ball
- conductive powder
- silicone oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
- C08L83/06—Polysiloxanes containing silicon bound to oxygen-containing groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/004—Additives being defined by their length
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to the technical field of rubber and discloses a low-filling amount high-conductivity liquid silicone rubber composition. The composition comprises a component A and a component B. Each one of components A and B comprises, by mass, 20 to 150 parts of liquid silicone rubber, 0 to 20 parts of reinforcing particles, 0 to 20 parts of silicone oil, 100 to 500 parts of large-diameter ball-type conductive powder, 10 to 100 parts of small-diameter ball-type conductive powder and 0 to 100 parts of non-spherical conductive powder. The particle size of the large-diameter ball-type conductive powder is 50 to 150 microns and the particle size of the small-diameter ball-type conductive powder is 10 to 60 microns. The component A further contains 0.01 to 5 parts of a catalyst and the component B further contains 0.1 to 5 parts of a crosslinking agent. Through use of the complex system of conductive powder with different particle sizes, ideal powder accumulation effects are realized, good electrical conductivity is obtained, conductive paths are increased, electrical conductivity is improved and the low-filling amount high-conductivity liquid silicone rubber is obtained.
Description
Technical field
The present invention relates to field of rubber technology, more particularly to conductive rubber.
Background technology
In recent years, with the high speed development of electronic technology especially microelectric technique, various wireless communication systems and high frequency
The surge of electronic device quantity, result in Electromagnetic Interference this new environmental pollution.To solve the problems, such as Electromagnetic Interference, mainly
Electromagnetic shielding measure is taken, its concrete measure is the gap filling conductive material at the cabinet or cage connection of electronic installation,
Make case shell seam crossing conductive continuous, produce electromagnetic shielding action.Conventional conductive material is punching and shaping, die forming or extrusion
The conductive rubber of shaping, after the processed shape and size into design, is determined by fluting installation, bonding or bolt on equipment
Position, directly as conductive elastomer liner, realizes conductive communication and electromagnetic shielding.
But, with electronics miniaturization and highly integrated development, traditional handicraft such as punching and shaping, die forming or
The conductive rubber of extrusion molding, can all be restricted in production and in assembling application, it is impossible to meet volume is small, complex structure
Use requirement in shield shell, in this case, liquid silicon rubber composition arises at the historic moment.Liquid silicon rubber composition is removed
Outside shield effectiveness with conventional conductive rubber, also with mobility and thixotropy, can be easy to fill tiny seam,
So suitably applying in miniature or highly integrated electronic equipment very much.
Usually, the electric conductivity of liquid silicon rubber composition is directly proportional to conductive powder body loading therein.But, it is conductive
The powder filled amount of filler exceedes certain limit can affect the thixotropy and viscosity of liquid silastic, be unfavorable for which in small size and spy
Application in the operating modes such as different status requirement；Meanwhile, a large amount of filling conductive filler powder body can also increase production cost.
Therefore, the conducting liquid rubber composition of high conductivity is obtained on the premise of conductive powder body loading is reduced as far as possible
Thing is those skilled in the art's problem demanding prompt solution.
The content of the invention
It is an object of the present invention to provide low loading high connductivity liquid silicon rubber composition, to solve above-mentioned at least one
Individual technical problem.
Technical problem solved by the invention can employ the following technical solutions to realize：
Low loading high connductivity liquid silicon rubber composition, it is characterised in that comprising component A and B component；
Include the composition of following mass parts in the component A and B component：
20 parts～150 parts of liquid silastic, 0 part～20 parts of granule of enhancing, 0 part～20 parts of silicone oil, 110 parts of conductive part body～
700 parts, wherein, conductive powder body includes 100 parts～500 parts of big particle diameter ball-type conductive powder body, 10 parts of small particle ball-type conductive powder body
～100,0～100 part of non-sphere conductive powder body；
The big particle diameter ball-type diameter of particle is 50～150 μm, and the small particle ball-type diameter of particle is 10 μm～60 μm；
The component A also includes 0.01 part～5 parts of catalyst；
The B component also includes 0.1 part～5 parts of cross-linking agent.
The present invention is by using different-grain diameter, conductive powder body compound system of different shapes, the conductive powder body of big small particle
Collocation, it is possible to achieve preferably powder body piles up effect, realizes more preferable electric conductivity, increases conductive path, improves electric conductivity, real
The liquid silastic of high conductivity is obtained under low loading now.
Component A is 1 with the mass ratio of B component：1.
The liquid silastic is ethenyl blocking polydimethylsiloxane.This kind of liquid silastic has excellent hot
Energy, electrical property, the stress extremely low to components and parts generation.
Preferably, the ethenyl blocking polydimethylsiloxane is a kind of or the mixing of at least two different viscosities
Thing, the ethenyl blocking polydimethylsiloxane viscosity are 1Pas～100Pas.
The silicone oil is that methyl-silicone oil, hydroxy silicon oil, vinyl silicone oil, at least one line style in methyl phenyl silicone oil are poly-
Siloxanes.
The cross-linking agent is linear containing hydrogen silicone oil, the active hydrogen molar percentage of the linear containing hydrogen silicone oil is 0.1%～
1.5%.
The catalyst is platinum-vinyl siloxane coordination compound, alcohol modified chloroplatinic acid catalyst, platinum-alkynes basigamy compound
In at least one.
It is described enhancing granule be white carbon, Calcium Carbonate, silicon powder, kieselguhr, at least one in titanium dioxide.White carbon is resistance to
High temperature, do not fire, it is tasteless, odorless, with good electrical insulating property.Calcium Carbonate makes that rubber color and luster light is gorgeous, percentage elongation big, tensile strength
High, anti-wear performance is good.For producing during microcellular rubber, its uniform in foaming can be made.Silicon powder significantly improves resistance to compression, anti-folding, resists
Ooze, anti-corrosion, shock resistance and anti-wear performance.Microcellular structure is provided with kieselguhr, it is easy to which liquid material penetrates into, improves electric conductivity.
The white carbon includes at least one in gas-phase silica and precipitated silica.
The Calcium Carbonate includes at least one in precipitated calcium carbonate, activated Calcium carbonate and ground calcium carbonate.
The conductive powder body is bronze, argentum powder, platinum powder, aluminium powder, copper powder, nikel powder, graphite powder, silver-plated aluminium powder, silver-plated
At least one in copper powder, silver-plated nikel powder, silver-plated glass dust, silver-plated nikel powder, the aluminium powder of nickel plating, the graphite powder of nickel plating.
The non-sphere conductive powder body be fibrous conductive powder body, sheets of conductive powder body, bulk, it is irregularly shaped in extremely
A kind of few non-sphere conductive powder body.
A diameter of 5 μm～20 μm of the fibrous conductive powder body, length be 100 μm～200 μm.
The mean diameter of the sheets of conductive powder body is 10 μm～80 μm.
The mean diameter of the block conductive powder body is 20 μm～150 μm.
The mean diameter of the irregularly shaped conducting powder is 10 μm～150 μm.
The conductive powder body is composite material conductive powder body.
As a kind of preferred version, 20 parts of 100Pa.s ethenyl blockings polydimethylsiloxane, platinum-vinyl siloxane
0.2 part of coordination compound, 25 parts of hydroxy silicon oil, particle diameter is 120 parts silver-plated of glass dust of 60 μm of ball-types, the silver-plated glass of 5 μm of ball-types of particle diameter
10 parts of glass powder, 5 μm of diameter, 5 parts silver-plated of glass dust of 120 μm of threadinesss of length.
B component：20 parts of 100Pa.s ethenyl blockings polydimethylsiloxane, 1.1 parts of 0.5% containing hydrogen silicone oil of hydrogen content,
25 parts of hydroxy silicon oil, particle diameter is 120 parts silver-plated of glass dust of 60 μm of ball-types, 10 parts silver-plated of glass dust of 5 μm of ball-types of particle diameter, diameter
5 μm, 5 parts silver-plated of glass dust of 120 μm of threadinesss of length.
Using planetary mixer according to kneading and obtain component A and B component liquid silicon rubber composition.
Jing is tested, and said ratio conductivity is 0.0042 Ω .cm.
As another kind of preferred version, component A：50 parts of 20Pa.s ethenyl blockings polydimethylsiloxane, alcohol are modified chlorine
2 parts of platinic acid catalyst, 10 parts of gas-phase silica, 8 parts of vinyl silicone oil, 100 parts silver-plated of aluminium powder of 120 μm of ball-types of particle diameter, particle diameter
15 parts silver-plated of aluminium powder of 25 μm of ball-types, 20 parts of the graphite powder of 80 μm of lamellar nickel plating of diameter, the silver-plated aluminium powder 6 of 30 μm of bulks of diameter
Part.
B component：50 parts of 20Pa.s ethenyl blockings polydimethylsiloxane, 4 parts of 0.5% containing hydrogen silicone oil of hydrogen content, gas phase
10 parts of white carbon, 8 parts of vinyl silicone oil, 100 parts silver-plated of aluminium powder of 120 μm of ball-types of particle diameter, the silver-plated aluminium powder of 25 μm of ball-types of particle diameter
15 parts, 20 parts of the graphite powder of 80 μm of lamellar nickel plating of diameter, 6 parts silver-plated of aluminium powder of 30 μm of bulks of diameter.
Component A and B component liquid silicon rubber composition are kneaded and are obtained using planetary mixer.
Jing is tested, and said ratio conductivity is 0.0035 Ω .cm.
As another kind of preferred version, component A：100 parts of 40Pa.s ethenyl blockings polydimethylsiloxane, platinum-alkynes
0.5 part of basigamy compound platinum catalyst, 5 parts of gas-phase silica, 3 parts of precipitated calcium carbonate, 5 parts of dimethicone, 84 μm of balls of particle diameter
Type copper 100 parts of conductive powder body of silver, 20 μm of ball-type copper 20 parts of conductive powder bodies of silver of particle diameter, block 3 parts of the conductive powder body of copper silver of 30 μm of diameter.
B component：100 parts of 40Pa.s ethenyl blockings polydimethylsiloxane, 2 parts of 0.7% containing hydrogen silicone oil of hydrogen content, gas phase
5 parts of white carbon, 3 parts of precipitated calcium carbonate, 5 parts of dimethicone, 84 μm of ball-type copper 100 parts of conductive powder bodies of silver of particle diameter, 20 μm of particle diameter
Ball-type copper 20 parts of conductive powder body of silver, block 3 parts of the conductive powder body of copper silver of 30 μm of diameter.A groups are kneaded and are obtained using planetary mixer
Divide and B component liquid silicon rubber composition.
Jing is tested, and said ratio conductivity is 0.002 Ω .cm.
As another kind of preferred version, component A：150 parts of 20Pa.s ethenyl blockings polydimethylsiloxane, platinum catalysis
2 parts of agent, 10 parts of activated Calcium carbonate, 10 parts of vinyl silicone oil, 5 parts of methyl toluene silicone oil, 100 μm of ball-type aluminum silver conductive powder bodies of particle diameter
130 parts, 35 μm of ball-type glass 28 parts of conductive powder bodies of silver of particle diameter.
B component：150 parts of 20Pa.s ethenyl blockings polydimethylsiloxane, 5 parts of 0.5% containing hydrogen silicone oil of hydrogen content, activity
10 parts of Calcium Carbonate, 10 parts of vinyl silicone oil, 5 parts of methyl toluene silicone oil, 100 μm of ball-type aluminum 130 parts of conductive powder bodies of silver of particle diameter, particle diameter
35 μm of ball-type glass 28 parts of conductive powder bodies of silver.Component A and the combination of B component liquid silastic are kneaded and are obtained using planetary mixer
Thing.
Jing is tested, and said ratio conductivity is 0.00322 Ω .cm.
Specific embodiment
In order that technological means, creation characteristic, reached purpose and effect that the present invention is realized are easy to understand, enter below
One step illustrates the present invention.
Low loading high connductivity liquid silicon rubber composition, comprising component A and B component；Include in component A and B component
There is the composition of following mass parts：20 parts～150 parts of liquid silastic, strengthens 0 part～20 parts of granule, and 0 part～20 parts of silicone oil is conductive
110 parts～700 parts of body of part, wherein, conductive powder body includes 100 parts～500 parts of big particle diameter ball-type conductive powder body, and small particle ball-type is led
Electric powder body 10 parts～100,0～100 part of non-sphere conductive powder body；Big particle diameter ball-type diameter of particle is 50～150 μm, small particle ball
Type diameter of particle is 10 μm～60 μm；Component A also includes 0.01 part～5 parts of catalyst；B component also includes cross-linking agent 0.1
Part～5 parts.The present invention is by using different-grain diameter, conductive powder body compound system of different shapes, the conductive powder body of big small particle
Collocation, it is possible to achieve preferably powder body piles up effect, realizes more preferable electric conductivity, increases conductive path, improves electric conductivity, real
The liquid silastic of high conductivity is obtained under low loading now.
Component A is 1 with the mass ratio of B component：1.
Liquid silastic is ethenyl blocking polydimethylsiloxane.This kind of liquid silastic have excellent hot property,
Electrical property, the stress extremely low to components and parts generation.
Preferably, ethenyl blocking polydimethylsiloxane is a kind of or the mixture of at least two different viscosities, second
Thiazolinyl end-blocking polydimethylsiloxane viscosity is 1Pas～100Pas.
Silicone oil is methyl-silicone oil, hydroxy silicon oil, vinyl silicone oil, the poly- silica of at least one line style in methyl phenyl silicone oil
Alkane.
Cross-linking agent is linear containing hydrogen silicone oil, and the active hydrogen molar percentage of linear containing hydrogen silicone oil is 0.1%～1.5%.
Catalyst is platinum-vinyl siloxane coordination compound, alcohol is modified in chloroplatinic acid catalyst, platinum-alkynes basigamy compound
It is at least one.
Enhancing granule be white carbon, Calcium Carbonate, silicon powder, kieselguhr, at least one in titanium dioxide.The resistance to height of white carbon
Temperature, do not fire, it is tasteless, odorless, with good electrical insulating property.Calcium Carbonate makes that rubber color and luster light is gorgeous, percentage elongation big, tensile strength
High, anti-wear performance is good.For producing during microcellular rubber, its uniform in foaming can be made.Silicon powder significantly improves resistance to compression, anti-folding, resists
Ooze, anti-corrosion, shock resistance and anti-wear performance.Microcellular structure is provided with kieselguhr, it is easy to which liquid material penetrates into, improves electric conductivity.
White carbon includes at least one in gas-phase silica and precipitated silica.
Calcium Carbonate includes at least one in precipitated calcium carbonate, activated Calcium carbonate and ground calcium carbonate.
Conductive powder body be bronze, argentum powder, platinum powder, aluminium powder, copper powder, nikel powder, graphite powder, silver-plated aluminium powder, silver-plated copper powder,
At least one in silver-plated nikel powder, silver-plated glass dust, silver-plated nikel powder, the aluminium powder of nickel plating, the graphite powder of nickel plating.
Non-sphere conductive powder body be fibrous conductive powder body, sheets of conductive powder body, bulk, it is irregularly shaped at least one
Plant non-sphere conductive powder body.
A diameter of 5 μm～20 μm of fibrous conductive powder body, length be 100 μm～200 μm.Sheets of conductive powder body it is average
Particle diameter is 10 μm～80 μm.The mean diameter of block conductive powder body is 20 μm～150 μm.The average grain of irregularly shaped conducting powder
Footpath is 10 μm～150 μm.Conductive powder body is composite material conductive powder body.
Embodiment one, 20 parts of 100Pa.s ethenyl blockings polydimethylsiloxane, platinum-vinyl siloxane coordination compound 0.2
Part, 25 parts of hydroxy silicon oil, particle diameter is 120 parts silver-plated of glass dust of 60 μm of ball-types, 10 parts silver-plated of glass dust of 5 μm of ball-types of particle diameter,
5 μm of diameter, 5 parts silver-plated of glass dust of 120 μm of threadinesss of length.B component：100Pa.s ethenyl blocking polydimethylsiloxane
20 parts, 1.1 parts of 0.5% containing hydrogen silicone oil of hydrogen content, 25 parts of hydroxy silicon oil, particle diameter are 120 parts silver-plated of glass dust of 60 μm of ball-types,
10 parts silver-plated of glass dust of 5 μm of ball-types of particle diameter, 5 μm of diameter, 5 parts silver-plated of glass dust of 120 μm of threadinesss of length.Stirred using planet
Machine is mixed according to kneading and obtain component A and B component liquid silicon rubber composition.
Embodiment two, component A：50 parts of 20Pa.s ethenyl blockings polydimethylsiloxane, alcohol are modified chloroplatinic acid catalyst 2
Part, 10 parts of gas-phase silica, 8 parts of vinyl silicone oil, 100 parts silver-plated of aluminium powder of 120 μm of ball-types of particle diameter, 25 μm of ball-types of particle diameter are silver-plated
15 parts of aluminium powder, 20 parts of the graphite powder of 80 μm of lamellar nickel plating of diameter, 6 parts silver-plated of aluminium powder of 30 μm of bulks of diameter.B component：
50 parts of 20Pa.s ethenyl blockings polydimethylsiloxane, 4 parts of 0.5% containing hydrogen silicone oil of hydrogen content, 10 parts of gas-phase silica, ethylene
8 parts of base silicone oil, 100 parts silver-plated of aluminium powder of 120 μm of ball-types of particle diameter, 15 parts silver-plated of aluminium powder of 25 μm of ball-types of particle diameter, 80 μm of pieces of diameter
20 parts of the graphite powder of shape nickel plating, 6 parts silver-plated of aluminium powder of 30 μm of bulks of diameter.
Component A and B component liquid silicon rubber composition are kneaded and are obtained using planetary mixer.
Embodiment three, component A：100 parts of 40Pa.s ethenyl blockings polydimethylsiloxane, platinum-alkynes basigamy compound platinum
0.5 part of Au catalyst, 5 parts of gas-phase silica, 3 parts of precipitated calcium carbonate, 5 parts of dimethicone, 84 μm of ball-type copper silver of particle diameter are conductive
100 parts of powder body, 20 μm of ball-type copper 20 parts of conductive powder bodies of silver of particle diameter, block 3 parts of the conductive powder body of copper silver of 30 μm of diameter.B component：
100 parts of 40Pa.s ethenyl blockings polydimethylsiloxane, 2 parts of 0.7% containing hydrogen silicone oil of hydrogen content, 5 parts of gas-phase silica, lightweight
3 parts of Calcium Carbonate, 5 parts of dimethicone, 84 μm of ball-type copper 100 parts of conductive powder bodies of silver of particle diameter, 20 μm of ball-type copper silver conducting powders of particle diameter
20 parts of body, block 3 parts of the conductive powder body of copper silver of 30 μm of diameter.Component A and B component liquid silicon are kneaded and are obtained using planetary mixer
Rubber composition.
Example IV, component A：150 parts of 20Pa.s ethenyl blockings polydimethylsiloxane, 2 parts of platinum catalyst, activity
10 parts of Calcium Carbonate, 10 parts of vinyl silicone oil, 5 parts of methyl toluene silicone oil, 100 μm of ball-type aluminum 130 parts of conductive powder bodies of silver of particle diameter, particle diameter
35 μm of ball-type glass 28 parts of conductive powder bodies of silver.B component：150 parts of 20Pa.s ethenyl blockings polydimethylsiloxane, hydrogen content
0.5% 5 parts of containing hydrogen silicone oil, 10 parts of activated Calcium carbonate, 10 parts of vinyl silicone oil, 5 parts of methyl toluene silicone oil, 100 μm of ball-types of particle diameter
Aluminum 130 parts of conductive powder body of silver, 35 μm of ball-type glass 28 parts of conductive powder bodies of silver of particle diameter.Kneaded using planetary mixer and obtain component A
With B component liquid silicon rubber composition.
And four embodiments that the present invention is adopted compare traditional proportioning, it is same that the gross mass number of conductive powder body is reduced
When, electric conductivity is more excellent.
Embodiment one：The gross mass number of conductive powder body is 260 parts, and conductivity is 0.0042 Ω .cm.
Embodiment two：The gross mass number of conductive powder body is 282 parts, and conductivity is 0.0035 Ω .cm.
Embodiment three：The gross mass number of conductive powder body is 246 parts, and conductivity is 0.002 Ω .cm.
Example IV：The gross mass number of conductive powder body is 316 parts, and conductivity is 0.0042 Ω .cm.
The testing standard of specific insulation is：MIL-DTL-83528C, test equipment is：Instrument for measuring DC resistance
(CHT3540-3)。
Conducting liquid silicone rubber obtained in technical scheme provided by the present invention, can be obtained with less conductive powder body loading
Obtain the conducting liquid silicone rubber of high conductivity.
Mixture is that Jing planetary mixers are stirred and mix acquisition respectively by component A and B component, and planetary mixer includes
For placing the cavity of material, cavity is provided with one for installing the first groove of ultrasonic generator, and ultrasound wave occurs dress
Put and be fixed in the first groove, the direction for sending ultrasound wave of ultrasonic generator is towards in cavity.The experiment proved that, install
The dissolubility for having ultrasonic generator, material is greatly improved, and stirring evenly, and is obtained using ultrasonic generator
The conductivity of the mixture for obtaining is higher than the mixture for not adopting ultrasonic generator to obtain.Cavity is provided with one for installing sound
Second groove of sound sensor, sound transducer are fixed in the second groove, are provided with one in front of the sensitive surface of sound transducer
Netted filtering body.Sound transducer connects a control board, and a timing circuit is provided with control board, and control board is also
Control is connected to the motor for driving planetary mixer to be stirred.Judge that the granule in acquisition cavity is big by sound transducer
Little, and then know the effect of stirring, whether controlled motor works, when sound transducer obtains granular size in cavity in suitable
Preferably under size, stop stirring.
The ultimate principle and principal character and advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel it should be appreciated that the present invention is not restricted to the described embodiments, the simply explanation described in above-described embodiment and description this
The principle of invention, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, these changes
Change and improvement is both fallen within scope of the claimed invention.The claimed scope of the invention by appending claims and its
Equivalent thereof.
Claims (10)
1. low loading high connductivity liquid silicon rubber composition, it is characterised in that comprising component A and B component；
Include the composition of following mass parts in the component A and B component：
20 parts～150 parts of liquid silastic, strengthens 0 part～20 parts of granule, 0 part～20 parts of silicone oil, conductive part body 110 parts～700
Part, wherein, conductive powder body includes 100 parts～500 parts of big particle diameter ball-type conductive powder body, 10 parts of small particle ball-type conductive powder body～
100,0～100 part of non-sphere conductive powder body；
The big particle diameter ball-type diameter of particle is 50～150 μm, and the small particle ball-type diameter of particle is 10 μm～60 μm；
The component A also includes 0.01 part～5 parts of catalyst；
The B component also includes 0.1 part～5 parts of cross-linking agent.
2. low loading high connductivity liquid silicon rubber composition according to claim 1, it is characterised in that the vinyl
End-blocking polydimethylsiloxane is a kind of or the mixture of at least two different viscosities, the ethenyl blocking poly dimethyl silicon
Oxygen alkane viscosity is 1Pas～100Pas.
3. low loading high connductivity liquid silicon rubber composition according to claim 2, it is characterised in that the silicone oil is
At least one linear polysiloxanes in methyl-silicone oil, hydroxy silicon oil, vinyl silicone oil, methyl phenyl silicone oil.
4. low loading high connductivity liquid silicon rubber composition according to claim 3, it is characterised in that the cross-linking agent
For linear containing hydrogen silicone oil, the active hydrogen molar percentage of the linear containing hydrogen silicone oil is 0.1%～1.5%.
5. low loading high connductivity liquid silicon rubber composition according to claim 1, it is characterised in that strengthening granule is
White carbon, Calcium Carbonate, silicon powder, kieselguhr, at least one in titanium dioxide；
The white carbon includes at least one in gas-phase silica and precipitated silica；
The Calcium Carbonate includes at least one in precipitated calcium carbonate, activated Calcium carbonate and ground calcium carbonate.
6. low loading high connductivity liquid silicon rubber composition according to claim 1, it is characterised in that the conducting powder
Body is bronze, argentum powder, platinum powder, aluminium powder, copper powder, nikel powder, graphite powder, silver-plated aluminium powder, silver-plated copper powder, silver-plated nikel powder, plating
The glass dust of silver, silver-plated nikel powder, the aluminium powder of nickel plating, at least one in the graphite powder of nickel plating；
The non-sphere conductive powder body be fibrous conductive powder body, sheets of conductive powder body, bulk, it is irregularly shaped at least one
Plant non-sphere conductive powder body；
A diameter of 5 μm～20 μm of the fibrous conductive powder body, length be 100 μm～200 μm；
The mean diameter of the sheets of conductive powder body is 10 μm～80 μm；
The mean diameter of the block conductive powder body is 20 μm～150 μm；
The mean diameter of the irregularly shaped conducting powder is 10 μm～150 μm.
7. low loading high connductivity liquid silicon rubber composition according to claim 1, it is characterised in that 100Pa.s second
Thiazolinyl 20 parts of polydimethylsiloxane of end-blocking, 0.2 part of platinum-vinyl siloxane coordination compound, 25 parts of hydroxy silicon oil, particle diameter are 60 μm
120 parts silver-plated of glass dust of ball-type, 10 parts silver-plated of glass dust of 5 μm of ball-types of particle diameter, 5 μm of diameter, 120 μm of threadinesss of length are silver-plated
5 parts of glass dust.
B component：20 parts of 100Pa.s ethenyl blockings polydimethylsiloxane, 1.1 parts of 0.5% containing hydrogen silicone oil of hydrogen content, hydroxyl
25 parts of silicone oil, particle diameter is 120 parts silver-plated of glass dust of 60 μm of ball-types, 10 parts silver-plated of glass dust of 5 μm of ball-types of particle diameter, 5 μm of diameter,
5 parts silver-plated of glass dust of 120 μm of threadinesss of length.
8. low loading high connductivity liquid silicon rubber composition according to claim 1, it is characterised in that component A：
50 parts of 20Pa.s ethenyl blockings polydimethylsiloxane, alcohol are modified 2 parts of chloroplatinic acid catalyst, 10 parts of gas-phase silica, ethylene
8 parts of base silicone oil, 100 parts silver-plated of aluminium powder of 120 μm of ball-types of particle diameter, 15 parts silver-plated of aluminium powder of 25 μm of ball-types of particle diameter, 80 μm of pieces of diameter
20 parts of the graphite powder of shape nickel plating, 6 parts silver-plated of aluminium powder of 30 μm of bulks of diameter.
B component：50 parts of 20Pa.s ethenyl blockings polydimethylsiloxane, 4 parts of 0.5% containing hydrogen silicone oil of hydrogen content, gas phase Linesless charcoal
Black 10 parts, 8 parts of vinyl silicone oil, 100 parts silver-plated of aluminium powder of 120 μm of ball-types of particle diameter, 15 parts silver-plated of aluminium powder of 25 μm of ball-types of particle diameter,
20 parts of the graphite powder of 80 μm of lamellar nickel plating of diameter, 6 parts silver-plated of aluminium powder of 30 μm of bulks of diameter.
9. low loading high connductivity liquid silicon rubber composition according to claim 1, it is characterised in that component A：
100 parts of 40Pa.s ethenyl blockings polydimethylsiloxane, platinum -0.5 part of alkynes basigamy compound platinum catalyst, gas-phase silica
5 parts, 3 parts of precipitated calcium carbonate, 5 parts of dimethicone, 84 μm of ball-type copper 100 parts of conductive powder bodies of silver of particle diameter, 20 μm of ball-type copper of particle diameter
20 parts of silver-colored conductive powder body, block 3 parts of the conductive powder body of copper silver of 30 μm of diameter.
B component：100 parts of 40Pa.s ethenyl blockings polydimethylsiloxane, 2 parts of 0.7% containing hydrogen silicone oil of hydrogen content, gas phase Linesless charcoal
Black 5 parts, 3 parts of precipitated calcium carbonate, 5 parts of dimethicone, 84 μm of ball-type copper 100 parts of conductive powder bodies of silver of particle diameter, 20 μm of ball-types of particle diameter
Copper 20 parts of conductive powder body of silver, block 3 parts of the conductive powder body of copper silver of 30 μm of diameter.
10. low loading high connductivity liquid silicon rubber composition according to claim 1, it is characterised in that component A：
150 parts of 20Pa.s ethenyl blockings polydimethylsiloxane, 2 parts of platinum catalyst, 10 parts of activated Calcium carbonate, vinyl silicone oil 10
Part, 5 parts of methyl toluene silicone oil, 100 μm of ball-type aluminum 130 parts of conductive powder bodies of silver of particle diameter, 35 μm of ball-type glass silver conductive powder bodies 28 of particle diameter
Part.
B component：150 parts of 20Pa.s ethenyl blockings polydimethylsiloxane, 5 parts of 0.5% containing hydrogen silicone oil of hydrogen content, active carbonic acid
10 parts of calcium, 10 parts of vinyl silicone oil, 5 parts of methyl toluene silicone oil, 100 μm of ball-type aluminum 130 parts of conductive powder bodies of silver of particle diameter, 35 μm of particle diameter
Ball-type glass 28 parts of conductive powder body of silver.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611102948.3A CN106589953A (en) | 2016-12-05 | 2016-12-05 | Low-filling amount high-conductivity liquid silicone rubber composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611102948.3A CN106589953A (en) | 2016-12-05 | 2016-12-05 | Low-filling amount high-conductivity liquid silicone rubber composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106589953A true CN106589953A (en) | 2017-04-26 |
Family
ID=58595826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611102948.3A Pending CN106589953A (en) | 2016-12-05 | 2016-12-05 | Low-filling amount high-conductivity liquid silicone rubber composition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106589953A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109135295A (en) * | 2018-08-14 | 2019-01-04 | 江苏天辰新材料股份有限公司 | A kind of silicon rubber with good stable electric conductivity |
| CN110157192A (en) * | 2019-04-10 | 2019-08-23 | 中国科学院深圳先进技术研究院 | A kind of flexible polymer film and its manufacturing method can be used for sound intensity detection |
| WO2020025025A1 (en) | 2018-08-01 | 2020-02-06 | 江西蓝星星火有机硅有限公司 | Conductive liquid silicone rubber and preparation method and use thereof |
| CN112708392A (en) * | 2020-12-25 | 2021-04-27 | 深圳德邦界面材料有限公司 | Low-volatility high-shielding silver-nickel conductive adhesive and preparation method thereof |
| US11084929B2 (en) | 2017-12-08 | 2021-08-10 | Lg Chem, Ltd. | Silicone composite material and manufacturing method thereof |
| US11939471B2 (en) | 2018-09-28 | 2024-03-26 | Dow Silicones Corporation | Liquid silicone rubber composition |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104371326A (en) * | 2014-11-27 | 2015-02-25 | 深圳市森日有机硅材料有限公司 | Preparation method of liquid silicone rubber composition |
| CN104830069A (en) * | 2015-05-13 | 2015-08-12 | 上海工程技术大学 | High-strength conductive silicon rubber and preparation method thereof |
| CN105385170A (en) * | 2015-12-24 | 2016-03-09 | 平湖阿莱德实业有限公司 | Low-filling-volume high-conductivity liquid silicon rubber |
| CN105838083A (en) * | 2016-05-12 | 2016-08-10 | 浙江新安化工集团股份有限公司 | Conducting liquid silicone rubber for rubber rollers and preparation method of conducting liquid silicone rubber |
-
2016
- 2016-12-05 CN CN201611102948.3A patent/CN106589953A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104371326A (en) * | 2014-11-27 | 2015-02-25 | 深圳市森日有机硅材料有限公司 | Preparation method of liquid silicone rubber composition |
| CN104830069A (en) * | 2015-05-13 | 2015-08-12 | 上海工程技术大学 | High-strength conductive silicon rubber and preparation method thereof |
| CN105385170A (en) * | 2015-12-24 | 2016-03-09 | 平湖阿莱德实业有限公司 | Low-filling-volume high-conductivity liquid silicon rubber |
| CN105838083A (en) * | 2016-05-12 | 2016-08-10 | 浙江新安化工集团股份有限公司 | Conducting liquid silicone rubber for rubber rollers and preparation method of conducting liquid silicone rubber |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11084929B2 (en) | 2017-12-08 | 2021-08-10 | Lg Chem, Ltd. | Silicone composite material and manufacturing method thereof |
| WO2020025025A1 (en) | 2018-08-01 | 2020-02-06 | 江西蓝星星火有机硅有限公司 | Conductive liquid silicone rubber and preparation method and use thereof |
| CN109135295A (en) * | 2018-08-14 | 2019-01-04 | 江苏天辰新材料股份有限公司 | A kind of silicon rubber with good stable electric conductivity |
| US11939471B2 (en) | 2018-09-28 | 2024-03-26 | Dow Silicones Corporation | Liquid silicone rubber composition |
| CN110157192A (en) * | 2019-04-10 | 2019-08-23 | 中国科学院深圳先进技术研究院 | A kind of flexible polymer film and its manufacturing method can be used for sound intensity detection |
| CN110157192B (en) * | 2019-04-10 | 2021-10-01 | 中国科学院深圳先进技术研究院 | Flexible polymer film for sound intensity detection and manufacturing method thereof |
| CN112708392A (en) * | 2020-12-25 | 2021-04-27 | 深圳德邦界面材料有限公司 | Low-volatility high-shielding silver-nickel conductive adhesive and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106589953A (en) | Low-filling amount high-conductivity liquid silicone rubber composition | |
| CN107189445A (en) | One kind is used for highly conductive liquid silicon rubber composition of injection moulding and preparation method thereof | |
| CN102942895B (en) | A kind of heat conductive electronic pouring sealant and preparation method thereof | |
| CN110330946A (en) | A kind of low viscosity high heat conduction organosilicon gel and preparation method thereof | |
| CN105385170A (en) | Low-filling-volume high-conductivity liquid silicon rubber | |
| TW201708337A (en) | Thermally conductive composition | |
| CN104312476B (en) | Silver coated copper powder conductive adhesive and preparation method thereof | |
| CN106753205A (en) | A kind of low viscosity, the epoxy modified silicone casting glue of high heat conduction and its application | |
| CN108504108A (en) | A kind of add-on type bi-component organic silicon thermally conductive gel and preparation method thereof | |
| CN101962528A (en) | Two-component sealing silica gel with low viscosity and high thermal conductivity and preparation method theref | |
| CN101225234A (en) | Heat conductive insulating material and preparation method thereof | |
| CN102093838A (en) | High-temperature cured two-component pouring sealant and preparation method thereof | |
| CN106916453A (en) | A kind of low loading high connductivity liquid silicon rubber composition | |
| CN107541070B (en) | Thixotropic foam silicone rubber and preparation method thereof | |
| CN106905705A (en) | A kind of silicone sealant gel and preparation method thereof | |
| CN109735111A (en) | The highly conductive sticky add-on type conductive silicon rubber of one kind and preparation method | |
| CN104072998A (en) | Base rubber material of high dielectric constant liquid silicone rubber and application thereof in composition | |
| CN109867964A (en) | Ultrahigh voltage cable fittings semiconductive liquid silicon rubber composition and preparation method thereof | |
| JP5976382B2 (en) | Die attach paste, manufacturing method thereof, and semiconductor device | |
| CN109181628A (en) | A kind of FIP soft conductive silicon rubber composition and preparation method thereof | |
| CN111548634A (en) | Low-density heat-conducting gel and preparation method thereof | |
| CN100349983C (en) | Method for producing silicone rubber, aqueous emulsion for silicone rubber and method for producing same | |
| CN114574154A (en) | Low-viscosity two-component heat-conducting pouring sealant and preparation method thereof | |
| CN104845375B (en) | A kind of low-k liquid silastic composite and preparation method thereof | |
| CN105778513A (en) | Liquid silicone rubber compound |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170426 |