CN110003727A - A kind of long-acting water-based metal heat-insulating anti-corrosive coating - Google Patents
A kind of long-acting water-based metal heat-insulating anti-corrosive coating Download PDFInfo
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D125/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Coating compositions based on derivatives of such polymers
- C09D125/02—Homopolymers or copolymers of hydrocarbons
- C09D125/04—Homopolymers or copolymers of styrene
- C09D125/08—Copolymers of styrene
- C09D125/14—Copolymers of styrene with unsaturated esters
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
- C09D5/10—Anti-corrosive paints containing metal dust
- C09D5/106—Anti-corrosive paints containing metal dust containing Zn
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
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- C08K2003/0893—Zinc
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- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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Abstract
The invention discloses a kind of long-acting water-based metal heat-insulating anti-corrosive coatings, belong to technical field of polymer materials.According to parts by weight, it successively weighs: 40~60 parts of styrene-acrylic emulsions, 10~12 parts of titanium dioxides; 3~4 parts of dispersing agents, 1~2 part of defoaming agent, 5~8 parts of potassium tetratitanates; 10~15 parts of glass beads, 1~2 part of coupling agent, 10~20 parts of ethanol solutions and 20~25 parts of modified additives；Styrene-acrylic emulsion is mixed with ethanol solution; and titanium dioxide is sequentially added, and potassium tetratitanate, glass bead; modified additive; coupling agent, dispersing agent and defoaming agent, in temperature be 30~50 DEG C; under conditions of revolving speed is 300~400r/min; after being stirred 10~30min, and after standing 1~3h under room temperature, long-acting water-based metal heat-insulating anti-corrosive coating is obtained.The long-acting water-based metal heat-insulating anti-corrosive coating of technical solution of the present invention preparation has the characteristics that excellent antiseptic property and metal surface absorption property, has broad prospects in the development of high polymer material technology industry.
Description
Technical field
The invention discloses a kind of long-acting water-based metal heat-insulating anti-corrosive coatings, belong to technical field of polymer materials.
Background technique
Anticorrosive paint is generally divided into conventional anticorrosive paint and anticorrosive paint, is essential one kind in paint
Coating.Conventional anticorrosive paint is under general condition, to play the role of the longevity etch-proof, protection non-ferrous metal uses to metal etc.
Life；It for anticorrosive paint refers to relatively conventional anticorrosive paint, can be applied in relatively harsh corrosive environment, and have and can reach
A kind of anticorrosive paint of protection period longer than conventional anticorrosive paint.
The antiseptic principle of general anticorrosive paint is chemical, physically and electrically chemical direction, explains in detail below: corrosion-resistant
It is neutral innocuous substance that the principles of chemistry, which are exactly by the neutralization of harmful acid-base material, to protect the material in corrosion-inhibiting coating not by corruption
The infringement of corrosion substance.Some amphoteric compounds, such as aluminium hydroxide, barium hydroxide and zinc oxide are often added in antirusting paint
It Deng, these substances is easy to that chemical action occurs with soda acid nuisance, and realizes anti-corrosion effect.Corrosion-resistant physical principle be exactly with
Corrosion-inhibiting coating will be kept apart by protection materials and extraneous corrosive substance.The physical principle of antirusting paint is exactly to use film forming agent
Obtain fine and close corrosion-inhibiting coating, antisepsis is isolated to by the injury of protection materials, such as leaded coating and oil plant it is anti-
Lead soap can be formed after answering, to guarantee the compactness of corrosion-inhibiting coating.It is good to synthesize metal working fluid cooling performance, it is economic and environment-friendly,
It is used widely in bearing parts process.But synthesis metal working fluid be usually diluted with water in use, water content compared with
Height is easy to cause contact component to corrode, so the selection of antirust agent and compounding are one for improving metal working fluid rustless property
Difficult point has great importance to guarantee metal processing piece quality.Corrosion-resistant electrochemical action refers to be added in antirusting paint
Some special substances can react to form anti-corrosion ion when moisture and oxygen are by antirusting paint, make steel in this way
Equal metallic surfaces passivation reaches corrosion-resistant purpose to prevent the dissolution of metal ion, most common in this particular matter
It is exactly chromate.In bearing parts process, metal working fluid directly acts on lathe, workpiece and tool surface, therefore
It is required that working fluid has good rustless property.Especially in high temperature, high humility area or season, if the bearing parts process-cycle
It is longer, then the rustless property of metal working fluid is required higher, it is desirable that working fluid itself will not cause workpiece, lathe and cutter
Corrosion, while should also have certain rustless property, it can play the role of temporarily preventing corrosion.
Traditional anticorrosive paint is based on solvent type, while playing a great role in metal protection, due to containing big
Measure organic volatile, the hazardous solvents such as also containing benzene, gylcol ether of portioned product, to the body of producers and construction personnel
Body injury is larger, to environmental disruption than more serious.In recent years, water-based anticorrosive paint becomes the research and development of industrial antisepsis coating
Hot spot.And with the continuous development of the materials such as novel aqueous resin, novel antirust pigment, so that the performance of water-based anticorrosive paint
It is continuously improved, has been started in building decoration, automobile, ship and Production Container, railway locomotive, aerospace, access bridge
The application of the fields such as beam.Current water-based anticorrosive paint it is wide in variety concentrate on waterborne inorganic einc-rich primer, water-base epoxy coating series,
Water-borne acrylic coatings, aqueous polyurethane coating etc..
The antiseptic property of the long-acting water-based metal heat-insulating anti-corrosive coating of tradition and metal surface absorption property can not also be at present
The problem of one step improves is that it is promoted and is applied to broader field, meets industry for the promotion for obtaining more high combination property
Production requirement urgent problem to be solved.
Summary of the invention
The present invention solves the technical problem of: for traditional long-acting water-based metal heat-insulating anti-corrosive coating antiseptic property
The problem of can not further being promoted with metal surface absorption property, provides a kind of long-acting water-based metal heat-insulating anti-corrosive coating.
In order to solve the above-mentioned technical problem, the technical scheme adopted by the invention is that:
A kind of long-acting water-based metal heat-insulating anti-corrosive coating, is made of the raw material of following parts by weight: 40~60 parts of styrene-acrylic emulsions,
10~12 parts of titanium dioxides, 3~4 parts of dispersing agents, 1~2 part of defoaming agent, 5~8 parts of potassium tetratitanates, 10~15 parts of glass beads, 1~2
Part coupling agent, 10~20 parts of ethanol solutions and 20~25 parts of modified additives；
The modified additive the preparation method comprises the following steps:
Sodium lignin sulfonate is mixed with water 1:15~1:25 in mass ratio, and adjusts pH to 10~11, obtains sodium lignin sulfonate
Sodium lignin sulfonate dispersion liquid is mixed with formaldehyde 30:1~30:3 in mass ratio, and sodium lignin sulfonate matter is added by dispersion liquid
The sodium sulfite of 0.02~0.05 times of amount, after being stirred to react, obtains prepolymer dispersion, and prepolymer dispersion and potassium iodide are pressed matter
Amount is mixed than 50:1~100:1, and 0.3~0.5 times of prepolymer dispersion quality of 1,6- methylene bromide solution is added, and stirring is anti-
Ying Hou obtains mixture, and after mixture petroleum ether extraction, filtering obtains filtrate, will by filtrate concentrated by rotary evaporation to get additive
Additive is mixed with organic solvent 1:10~1:20 in mass ratio, and be added 0.3~0.4 times of additive quality isocyanates and
The nano silica that 0.2~0.5 times of additive quality after being stirred to react, filters, dry, obtains modified additive.
The solid content of the styrene-acrylic emulsion is 50~65%.
The dispersing agent is Dispersant MF, any one in dispersing agent NNO or dispersing agent 5040.
The defoaming agent is any one in silicone oil or dimethyl silicone polymer.
The coupling agent is silane resin acceptor kh-550, any in silane coupling agent KH-560 or Silane coupling reagent KH-570
It is a kind of.
The ethanol solution is to mix ethyl alcohol with water 3:1 in mass ratio, obtains ethanol solution.
The organic solvent is benzene, any one in dimethylbenzene or toluene.
The isocyanates is any one in toluene di-isocyanate(TDI) or isophorone diisocyanate.
1, the 6- methylene bromide solution is to mix 1,6- methylene bromide with dehydrated alcohol 1:4~1:6 in mass ratio, is obtained
1,6- methylene bromide solution.
0.2~0.4 times of additive quality of pretreatment zinc powder, the pretreatment zinc powder can be added in the modified additive
To mix zinc flake with dopamine solution 1:8~1:10 in mass ratio, after being stirred to react, filter, it is dry, obtain pretreatment zinc
Powder.
The beneficial effects of the present invention are:
(1) modified additive is added when preparing long-acting water-based metal heat-insulating anti-corrosive coating in the present invention, firstly, in modified additive
Sodium lignin sulfonate is handled using alkane, sodium lignin sulfonate is made to form three-dimensional net structure, and is had certain hydrophobic
Structure, after being added in product, since the addition of alkane reduces intermolecular electrostatic repulsion, so as to make additive in product
The coating film of comparatively dense can be formed in metal surface when in use process, improve product while the adsorptivity of metal surface, mention
The corrosion resistance of high product, secondly, additive is after modification, the hydroxyl on lignin surface can be with nano-silica in additive
The hydroxyl on SiClx surface is attached under the action of isocyanates, thus the intensive journey of three-dimensional network for forming modified additive
Degree improves, and then can be further improved the anticorrosive property of product, furthermore, modified additive, can be in CH- after being added in product
Self assembly occurs under the action of π and pi-pi bond, thus, micron-sized laminated structure is formed in the product, and is further stacked,
Erosion and the contact area of product can be made to reduce, and then can be further improved the anticorrosive property of product；
(2) potassium tetratitanate powder is added when preparing long-acting water-based metal heat-insulating anti-corrosive coating and pre-processes zinc powder by the present invention, and one
Aspect potassium tetratitanate powder is lamellar structure, and interlayer has negative electrical charge, in the silica for being grafted with isocyanates of addition
After contact with water, cyanate radical can be reacted with water, amine radical ion be generated, so as to which potassium tetratitanate is adsorbed in silicon dioxide meter
Face forms sandwich sandwich in the product, so that the antiseptic property of product is further increased, on the other hand, addition
Zinc powder by pretreatment after, zinc flake surface have amino, thus be added product in after, can be uniformly distributed in product it
In, it, can be in product use process and after being mixed with modified additive, added dose treated that silica can part
It is attached to zinc powder surface, and connects zinc powder under the action of additive, to form one layer of erosion resistant coating in metal surface, in turn
Further increase the antiseptic property of product.
Specific embodiment
Sodium lignin sulfonate and water 1:15~1:25 in mass ratio are mixed in beaker, is 30~60 DEG C in temperature, turns
Under conditions of speed is 300~400r/min, after being stirred 18~40min, and the sodium hydroxide for being 10~30% with mass fraction
Solution adjusts the pH to 10~11 of material in beaker, sodium lignin sulfonate dispersion liquid is obtained, by sodium lignin sulfonate dispersion liquid and first
Aldehyde 30:1~30:3 in mass ratio is mixed in three-necked flask, and into three-necked flask be added sodium lignin sulfonate quality 0.02~
0.05 times of sodium sulfite is 75~80 DEG C in temperature, under conditions of revolving speed is 300~320r/min, is stirred to react 3~4h
Afterwards, prepolymer dispersion is obtained, prepolymer dispersion and potassium iodide 50:1~100:1 in mass ratio are mixed in four-hole boiling flask,
And 0.3~0.5 times of prepolymer dispersion quality of 1,6- methylene bromide solution is added into four-hole boiling flask, in temperature be 60~80
DEG C, under conditions of revolving speed is 280~400r/min, after being stirred to react 4~6h, mixture is obtained, by mixture petroleum ether extraction 2
After~3 times, filtering, obtain filtrate, by filtrate in temperature be 30~50 DEG C, revolving speed be 120~150r/min, pressure be 500~
To get additive after 5~6h of concentrated by rotary evaporation under conditions of 600kPa, by additive and organic solvent 1:10~1:20 in mass ratio
Mixing, and 0.3~0.4 times of additive quality of isocyanates is added into the mixture of additive and organic solvent and adds
The nano silica for adding 0.2~0.5 times of agent quality is 70~80 DEG C in temperature, and revolving speed is the condition of 280~320r/min
Under, after being stirred to react 50~70min, filtering obtains filter cake, under conditions of being 80~85 DEG C in temperature by filter cake after dry 1~2h,
Obtain modified additive；According to parts by weight, it successively weighs: 40~60 parts of styrene-acrylic emulsions, 10~12 parts of titanium dioxides, 3~4 parts of dispersions
Agent, 1~2 part of defoaming agent, 5~8 parts of potassium tetratitanates, 10~15 parts of glass beads, 1~2 part of coupling agent, 10~20 parts of ethanol solutions
With 20~25 parts of modified additives；Styrene-acrylic emulsion and ethanol solution are mixed in blender, and sequentially added into blender
Titanium dioxide, potassium tetratitanate, glass bead, modified additive, coupling agent, dispersing agent and defoaming agent are 30~50 DEG C in temperature, turn
Under conditions of speed is 300~400r/min, after being stirred 10~30min, and after standing 1~3h under room temperature, length is obtained
Imitate water-based metal heat-insulating anti-corrosive coating.The solid content of the styrene-acrylic emulsion is 50~65%.The dispersing agent is Dispersant MF, point
Any one in powder NNO or dispersing agent 5040.The defoaming agent is any one in silicone oil or dimethyl silicone polymer.It is described
Coupling agent is silane resin acceptor kh-550, any one in silane coupling agent KH-560 or Silane coupling reagent KH-570.The second
Alcoholic solution is to mix ethyl alcohol with water 3:1 in mass ratio, obtains ethanol solution.The organic solvent is benzene, in dimethylbenzene or toluene
Any one.The isocyanates is any one in toluene di-isocyanate(TDI) or isophorone diisocyanate.The 1,6-
Methylene bromide solution is to mix 1,6- methylene bromide with dehydrated alcohol 1:4~1:6 in mass ratio, and it is molten to obtain 1,6- methylene bromide
Liquid.0.2~0.4 times of additive quality of pretreatment zinc powder can be added in the modified additive, the pretreatment zinc powder is will
Zinc flake is mixed with dopamine solution 1:8~1:10 in mass ratio, after being stirred to react, is filtered, dry, obtains pretreatment zinc powder.
Example 1
Sodium lignin sulfonate and water 1:25 in mass ratio are mixed in beaker, are 60 DEG C in temperature, revolving speed is 400r/min's
Under the conditions of, after being stirred 40min, and the sodium hydroxide solution for being 30% with mass fraction adjusts the pH to 11 of material in beaker,
Sodium lignin sulfonate dispersion liquid is obtained, sodium lignin sulfonate dispersion liquid and formaldehyde 30:3 in mass ratio are mixed in three-necked flask,
And 0.05 times of sodium lignin sulfonate quality of sodium sulfite is added into three-necked flask, in temperature be 80 DEG C, revolving speed 320r/
Under conditions of min, after being stirred to react 4h, prepolymer dispersion is obtained, prepolymer dispersion and potassium iodide 100:1 in mass ratio are mixed
Together in four-hole boiling flask, and 0.5 times of prepolymer dispersion quality of 1,6- methylene bromide solution, Yu Wen is added into four-hole boiling flask
Degree is 80 DEG C, under conditions of revolving speed is 400r/min, after being stirred to react 6h, mixture is obtained, by mixture with petroleum ether extraction 3 times
Afterwards, filter, obtain filtrate, by filtrate in temperature be 50 DEG C, revolving speed 150r/min, pressure be 600kPa under conditions of concentrated by rotary evaporation
To get additive after 6h, additive is mixed with organic solvent 1:20 in mass ratio, and the mixing to additive and organic solvent
0.4 times of additive quality of isocyanates and 0.5 times of additive quality of nano silica are added in object, is in temperature
80 DEG C, under conditions of revolving speed is 320r/min, after being stirred to react 70min, filtering obtains filter cake, by filter cake in temperature be 85 DEG C
Under the conditions of after dry 2h, obtain modified additive；According to parts by weight, it successively weighs: 60 parts of styrene-acrylic emulsions, 12 parts of titanium dioxides, 4 parts
Dispersing agent, 2 parts of defoaming agents, 8 parts of potassium tetratitanates, 15 parts of glass beads, 2 parts of coupling agents, 20 parts of ethanol solutions and 25 parts of modifications add
Add agent；Styrene-acrylic emulsion and ethanol solution are mixed in blender, and sequentially add titanium dioxide into blender, potassium tetratitanate,
Glass bead, modified additive, coupling agent, dispersing agent and defoaming agent are 50 DEG C in temperature, and revolving speed is the condition of 400r/min
Under, after being stirred 30min, and after standing 3h under room temperature, obtain long-acting water-based metal heat-insulating anti-corrosive coating.The phenylpropyl alcohol
The solid content of lotion is 65%.The dispersing agent is Dispersant MF.The defoaming agent is silicone oil.The coupling agent is silane coupled
Agent KH-550.The ethanol solution is to mix ethyl alcohol with water 3:1 in mass ratio, obtains ethanol solution.The organic solvent is benzene.
The isocyanates is toluene di-isocyanate(TDI).The 1,6- methylene bromide solution is to press 1,6- methylene bromide with dehydrated alcohol
Mass ratio 1:6 mixing, obtains 1,6- methylene bromide solution.0.4 times of additive quality of pre- place can be added in the modified additive
Zinc powder is managed, the pretreatment zinc powder is to mix zinc flake with dopamine solution 1:10 in mass ratio, after being stirred to react, mistake
Filter, it is dry, obtain pretreatment zinc powder.
Example 2
Sodium lignin sulfonate and water 1:25 in mass ratio are mixed in beaker, are 60 DEG C in temperature, revolving speed is 400r/min's
Under the conditions of, after being stirred 40min, and the sodium hydroxide solution for being 30% with mass fraction adjusts the pH to 11 of material in beaker,
Sodium lignin sulfonate dispersion liquid is obtained, sodium lignin sulfonate dispersion liquid and formaldehyde 30:3 in mass ratio are mixed in three-necked flask,
And 0.05 times of sodium lignin sulfonate quality of sodium sulfite is added into three-necked flask, in temperature be 80 DEG C, revolving speed 320r/
Under conditions of min, after being stirred to react 4h, prepolymer dispersion is obtained, prepolymer dispersion and potassium iodide 100:1 in mass ratio are mixed
Together in four-hole boiling flask, and 0.5 times of prepolymer dispersion quality of 1,6- methylene bromide solution, Yu Wen is added into four-hole boiling flask
Degree is 80 DEG C, under conditions of revolving speed is 400r/min, after being stirred to react 6h, mixture is obtained, by mixture with petroleum ether extraction 3 times
Afterwards, filter, obtain filtrate, by filtrate in temperature be 50 DEG C, revolving speed 150r/min, pressure be 600kPa under conditions of concentrated by rotary evaporation
To get additive after 6h, additive is mixed with organic solvent 1:20 in mass ratio, and the mixing to additive and organic solvent
0.4 times of additive quality of isocyanates and 0.5 times of additive quality of nano silica are added in object, is in temperature
80 DEG C, under conditions of revolving speed is 320r/min, after being stirred to react 70min, filtering obtains filter cake, by filter cake in temperature be 85 DEG C
Under the conditions of after dry 2h, obtain modified additive；According to parts by weight, it successively weighs: 60 parts of styrene-acrylic emulsions, 12 parts of titanium dioxides, 4 parts
Dispersing agent, 2 parts of defoaming agents, 15 parts of glass beads, 2 parts of coupling agents, 20 parts of ethanol solutions and 25 parts of modified additives；By phenylpropyl alcohol cream
Liquid and ethanol solution are mixed in blender, and titanium dioxide is sequentially added into blender, glass bead, modified additive, even
Join agent, dispersing agent and defoaming agent, in temperature be 50 DEG C, under conditions of revolving speed is 400r/min, after being stirred 30min, and in
After standing 3h under room temperature, long-acting water-based metal heat-insulating anti-corrosive coating is obtained.The solid content of the styrene-acrylic emulsion is 65%.It is described
Dispersing agent is Dispersant MF.The defoaming agent is silicone oil.The coupling agent is silane resin acceptor kh-550.The ethanol solution is
Ethyl alcohol is mixed with water 3:1 in mass ratio, obtains ethanol solution.The organic solvent is benzene.The isocyanates is that toluene two is different
Cyanate.1, the 6- methylene bromide solution is to mix 1,6- methylene bromide with dehydrated alcohol 1:6 in mass ratio, obtains 1,6- bis-
Bromomethane solution.0.4 times of additive quality of pretreatment zinc powder can be added in the modified additive, the pretreatment zinc powder is
Zinc flake is mixed with dopamine solution 1:10 in mass ratio, after being stirred to react, is filtered, it is dry, obtain pretreatment zinc powder.
Example 3
Sodium lignin sulfonate and water 1:25 in mass ratio are mixed in beaker, are 60 DEG C in temperature, revolving speed is 400r/min's
Under the conditions of, after being stirred 40min, and the sodium hydroxide solution for being 30% with mass fraction adjusts the pH to 11 of material in beaker,
Sodium lignin sulfonate dispersion liquid is obtained, sodium lignin sulfonate dispersion liquid and formaldehyde 30:3 in mass ratio are mixed in three-necked flask,
And 0.05 times of sodium lignin sulfonate quality of sodium sulfite is added into three-necked flask, in temperature be 80 DEG C, revolving speed 320r/
Under conditions of min, after being stirred to react 4h, prepolymer dispersion is obtained, prepolymer dispersion and potassium iodide 100:1 in mass ratio are mixed
Together in four-hole boiling flask, and 0.5 times of prepolymer dispersion quality of 1,6- methylene bromide solution, Yu Wen is added into four-hole boiling flask
Degree is 80 DEG C, under conditions of revolving speed is 400r/min, after being stirred to react 6h, mixture is obtained, by mixture with petroleum ether extraction 3 times
Afterwards, filter, obtain filtrate, by filtrate in temperature be 50 DEG C, revolving speed 150r/min, pressure be 600kPa under conditions of concentrated by rotary evaporation
To get additive after 6h；According to parts by weight, successively weigh: 60 parts of styrene-acrylic emulsions, 12 parts of titanium dioxides, 4 parts of dispersing agents, 2 parts disappear
Infusion, 8 parts of potassium tetratitanates, 15 parts of glass beads, 2 parts of coupling agents, 20 parts of ethanol solutions and 25 parts of additives；By styrene-acrylic emulsion with
Ethanol solution is mixed in blender, and titanium dioxide is sequentially added into blender, potassium tetratitanate, glass bead, additive, even
Join agent, dispersing agent and defoaming agent, in temperature be 50 DEG C, under conditions of revolving speed is 400r/min, after being stirred 30min, and in
After standing 3h under room temperature, long-acting water-based metal heat-insulating anti-corrosive coating is obtained.The solid content of the styrene-acrylic emulsion is 65%.It is described
Dispersing agent is Dispersant MF.The defoaming agent is silicone oil.The coupling agent is silane resin acceptor kh-550.The ethanol solution is
Ethyl alcohol is mixed with water 3:1 in mass ratio, obtains ethanol solution.The 1,6- methylene bromide solution is by 1,6- methylene bromide and nothing
Water-ethanol 1:6 in mass ratio mixing, obtains 1,6- methylene bromide solution.0.4 times of additive quality can be added in the additive
Zinc powder is pre-processed, the pretreatment zinc powder is to mix zinc flake with dopamine solution 1:10 in mass ratio, after being stirred to react,
Filtering, it is dry, obtain pretreatment zinc powder.
Comparative example:
Sodium lignin sulfonate and water 1:25 in mass ratio are mixed in beaker, are 60 DEG C in temperature, revolving speed is 400r/min's
Under the conditions of, after being stirred 40min, and the sodium hydroxide solution for being 30% with mass fraction adjusts the pH to 11 of material in beaker,
Sodium lignin sulfonate dispersion liquid is obtained, sodium lignin sulfonate dispersion liquid and formaldehyde 30:3 in mass ratio are mixed in three-necked flask,
And 0.05 times of sodium lignin sulfonate quality of sodium sulfite is added into three-necked flask, in temperature be 80 DEG C, revolving speed 320r/
Under conditions of min, after being stirred to react 4h, prepolymer dispersion is obtained, prepolymer dispersion and potassium iodide 100:1 in mass ratio are mixed
Together in four-hole boiling flask, and 0.5 times of prepolymer dispersion quality of 1,6- methylene bromide solution, Yu Wen is added into four-hole boiling flask
Degree is 80 DEG C, under conditions of revolving speed is 400r/min, after being stirred to react 6h, mixture is obtained, by mixture with petroleum ether extraction 3 times
Afterwards, filter, obtain filtrate, by filtrate in temperature be 50 DEG C, revolving speed 150r/min, pressure be 600kPa under conditions of concentrated by rotary evaporation
To get additive after 6h；According to parts by weight, successively weigh: 60 parts of styrene-acrylic emulsions, 12 parts of titanium dioxides, 4 parts of dispersing agents, 2 parts disappear
Infusion, 15 parts of glass beads, 2 parts of coupling agents, 20 parts of ethanol solutions and 25 parts of modified additives；By styrene-acrylic emulsion and ethanol solution
Be mixed in blender, and sequentially add titanium dioxide into blender, glass bead, modified additive, coupling agent, dispersing agent and
Defoaming agent, in temperature be 50 DEG C, under conditions of revolving speed is 400r/min, after being stirred 30min, and in standing under room temperature
After 3h, long-acting water-based metal heat-insulating anti-corrosive coating is obtained.The solid content of the styrene-acrylic emulsion is 65%.The dispersing agent is dispersing agent
MF.The defoaming agent is silicone oil.The coupling agent is silane resin acceptor kh-550.The ethanol solution is that ethyl alcohol and water are pressed matter
Amount is mixed than 3:1, obtains ethanol solution.The 1,6- methylene bromide solution be by 1,6- methylene bromide and dehydrated alcohol in mass ratio
1:6 mixing, obtains 1,6- methylene bromide solution.
Example 1 to the resulting long-acting water-based metal heat-insulating anti-corrosive coating of example 3 and comparative example product are subjected to performance detection,
The specific detection method is as follows:
1. polish tinplate sheet surface and use acetone oil removing, washes of absolute alcohol, then by above-mentioned coating brush thereon, naturally consolidate
Change for 24 hours, is then placed in 60 DEG C of drying boxes dry 12h.By coating be separately immersed in 3.5%NaOH solution, 3.5%HCl solution and
In 3.5%NaCl solution, its corrosion resistance is characterized according to coating variation, it is primary per checking for 24 hours, detect its antiseptic property.
2. test sample plate is prepared by GB/T1727, test specimen adhesive force is detected according to GB/T5210, template is fixed on
Carry out drawing a circle on the electronic Coating adhesion test instrument of QFD method test, with 4 times of lens examination scratches and defines the level after being completed,
At least guarantee that test result could unanimously define the level twice when deciding grade and level, 1 grade is highest level, 7 grades to be worst, deciding grade and level more rearward, table
Show that the adhesive force of material is poorer.
Specific testing result is as shown in table 1:
The long-acting water-based metal heat-insulating anti-corrosive coating performance test results of table 1
By 1 testing result of table it is found that the long-acting water-based metal heat-insulating anti-corrosive coating of technical solution of the present invention preparation is with excellent
It the characteristics of antiseptic property and metal surface absorption property, has broad prospects in the development of high polymer material technology industry.
Claims (10)
1. a kind of long-acting water-based metal heat-insulating anti-corrosive coating, which is characterized in that be made of the raw material of following parts by weight: 40~
60 parts of styrene-acrylic emulsions, 10~12 parts of titanium dioxides, 3~4 parts of dispersing agents, 1~2 part of defoaming agent, 5~8 parts of potassium tetratitanates, 10~15 parts
Glass bead, 1~2 part of coupling agent, 10~20 parts of ethanol solutions and 20~25 parts of modified additives；
The modified additive the preparation method comprises the following steps:
Sodium lignin sulfonate is mixed with water 1:15~1:25 in mass ratio, and adjusts pH to 10~11, obtains sodium lignin sulfonate
Sodium lignin sulfonate dispersion liquid is mixed with formaldehyde 30:1~30:3 in mass ratio, and sodium lignin sulfonate matter is added by dispersion liquid
The sodium sulfite of 0.02~0.05 times of amount, after being stirred to react, obtains prepolymer dispersion, and prepolymer dispersion and potassium iodide are pressed matter
Amount is mixed than 50:1~100:1, and 0.3~0.5 times of prepolymer dispersion quality of 1,6- methylene bromide solution is added, and stirring is anti-
Ying Hou obtains mixture, and after mixture petroleum ether extraction, filtering obtains filtrate, will by filtrate concentrated by rotary evaporation to get additive
Additive is mixed with organic solvent 1:10~1:20 in mass ratio, and be added 0.3~0.4 times of additive quality isocyanates and
The nano silica that 0.2~0.5 times of additive quality after being stirred to react, filters, dry, obtains modified additive.
2. a kind of long-acting water-based metal heat-insulating anti-corrosive coating according to claim 1, it is characterised in that: the styrene-acrylic emulsion
Solid content be 50~65%.
3. a kind of long-acting water-based metal heat-insulating anti-corrosive coating according to claim 1, it is characterised in that: the dispersing agent is
Any one in Dispersant MF, dispersing agent NNO or dispersing agent 5040.
4. a kind of long-acting water-based metal heat-insulating anti-corrosive coating according to claim 1, it is characterised in that: the defoaming agent is
Any one in silicone oil or dimethyl silicone polymer.
5. a kind of long-acting water-based metal heat-insulating anti-corrosive coating according to claim 1, it is characterised in that: the coupling agent is
Any one in silane resin acceptor kh-550, silane coupling agent KH-560 or Silane coupling reagent KH-570.
6. a kind of long-acting water-based metal heat-insulating anti-corrosive coating according to claim 1, it is characterised in that: the ethanol solution
To mix ethyl alcohol with water 3:1 in mass ratio, ethanol solution is obtained.
7. a kind of long-acting water-based metal heat-insulating anti-corrosive coating according to claim 1, it is characterised in that: the organic solvent
For benzene, any one in dimethylbenzene or toluene.
8. a kind of long-acting water-based metal heat-insulating anti-corrosive coating according to claim 1, it is characterised in that: the isocyanates
For any one in toluene di-isocyanate(TDI) or isophorone diisocyanate.
9. a kind of long-acting water-based metal heat-insulating anti-corrosive coating according to claim 1, it is characterised in that: 1, the 6- dibromo
Dichloromethane is to mix 1,6- methylene bromide with dehydrated alcohol 1:4~1:6 in mass ratio, obtains 1,6- methylene bromide solution.
10. a kind of long-acting water-based metal heat-insulating anti-corrosive coating according to claim 1, it is characterised in that: the modification adds
0.2~0.4 times of additive quality of pretreatment zinc powder can be added by adding in agent, the pretreatment zinc powder is by zinc flake and DOPA
Amine aqueous solution 1:8~1:10 in mass ratio mixing after being stirred to react, is filtered, dry, obtains pretreatment zinc powder.
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| CN113045959A (en) * | 2021-02-25 | 2021-06-29 | 王海燕 | Heat-insulating corrosion-resistant powder coating and preparation method thereof |
| CN113206297A (en) * | 2021-05-07 | 2021-08-03 | 徐文忠 | Multifunctional composite electrolyte additive |
| CN114456711A (en) * | 2021-12-15 | 2022-05-10 | 浙江亚厦装饰股份有限公司 | Chromium-free Dacromet coating liquid and preparation method and application thereof |
| CN115216165A (en) * | 2022-07-21 | 2022-10-21 | 杭萧钢构股份有限公司 | Steel structure water-based anticorrosive paint and preparation method thereof |
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