CN104803369B - Nanometer carbon-coated boron nitride composite powder and its preparation method and use - Google Patents
Nanometer carbon-coated boron nitride composite powder and its preparation method and use Download PDFInfo
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Abstract
The invention discloses nanometer carbon-coated boron nitride composite powder and its preparation method and use. The nanometer carbon-coated boron nitride composite powder comprises a nanometer carbon material and boron nitride. The nanometer carbon material is uniformly adsorbed and coats boron nitride surface so that a composite coated structure is formed. The preparation method comprises carrying out surface functionalization on the boron nitride powder by an amino coupling agent, carrying out oxidative carboxylation treatment on the nanometer carbon material, and carrying out electrostatic adsorption on the nanometer carbon material on the surface of boron nitride so that a desired product is obtained. The nanometer carbon-coated boron nitride composite powder utilizes boron nitride as a nanometer carbon material carrier, is conducive to nanometer carbon material addition and dispersion, has a high efficiency heat-conduction electric-conduction network, has excellent heat conduction performances of the nanometer carbon material and boron nitride and electric conduction and infrared radiation characteristics of the nanometer carbon material, and has an important application value in the field of composite materials and functional paint. The preparation method has a simple process route, is suitable for large-scale production and has an important industrialization prospect.
Description
Technical field
The present invention relates to a kind of micro-nano coated powder and preparation method thereof, be related specifically to a kind of nano-sized carbon parcel boron nitride composite granule, its preparation method and application.
Background technology
Along with the fast development of national economy, the demand of high efficiency and heat radiation technology is drastically expanded so that traditional material subjects huge performance boost pressure.Existing radiating mode mainly has conduction of heat, convection current and heat loss through radiation mode, but the most still based on heat conducting and radiating, but when being limited by key elements such as size, space and costs and forced convertion cannot be used to dispel the heat, only demand increasingly can not be met by heat exchange pattern.The especially trend trend of electronic device large-scale and microminaturization, explores heat sinking technology and seems especially urgent, the mode that conduction of heat is combined with heat loss through radiation is undoubtedly important solution route.
Boron nitride and nano-carbon material (such as CNT, Graphene) all have the highest thermal conductivity, and its powder body material is the important filler of thermal management materials.Especially CNT, wherein theoretical thermal conductivity is up to 5000
W/mK, and specific surface area is huge, is described as the most black material, and the refractive index of light is only had 0.045%, absorbance is up to more than 99.5%, and radiation coefficient is close to the 1.0 of absolute black body.Therefore nano-carbon material can play its heat conducting and radiating and the function of infra-red radiation heat radiation as heat radiation filler simultaneously, is the outstanding filler in high-performance heat sink material.But the surface area huge due to nano-carbon material and one-dimensional or two-dimensional structure cause nano-carbon material difficulties in dispersion in matrix material, and are difficult to obtain high volume content.And due to the difference of thermal conduction mechanism, research finds adding the raising to thermal conductivity and being not so good as the raising to electrical conductivity so significantly, well below desired by people of nano-carbon material.
Meanwhile, the boron nitride of micron order yardstick is a kind of conventional heat filling, and its dispersing technology requires far below the requirement to nano-carbon material, and its large-size particle is more conducive to form effective passage of heat.But its infrared emittance takes on the low side, it is impossible to give full play to the effect of multiple radiating mode.
In composite, nano-carbon material and boron nitride are only used as independent filler and mix interpolation separately or together at present, such as CN100590069A discloses a kind of method preparing boron nitride enveloped carbon nanometer tube or nano wire and boron nitride nano-tube, it uses metallic boron hydrides, borofluoride to make boron source, nitrogen source made by ammonium salt, and obtain boron nitride-carbon nano tube compound material by original position packing technology, but nano-carbon material is wrapped in material internal by this composite system, the infrared signature of nano-carbon material is made well to play.Therefore, design and develop heat sinking filler and still there is important urgency.
Summary of the invention
An object of the present invention is to provide a kind of nano-carbon material parcel boron nitride composite granule, and it can effectively overcome deficiency of the prior art.
The two of the purpose of the present invention are to provide a kind of method preparing aforementioned nano-carbon material parcel boron nitride composite granule.
The three of the purpose of the present invention are to provide aforementioned nano-carbon material to wrap up the application in preparing heat sink material or heat abstractor of the boron nitride composite granule.
For realizing aforementioned invention purpose, present invention employs following technical scheme:
A kind of nano-sized carbon parcel boron nitride composite granule, comprises nano-carbon material and boron nitride, and wherein nano-carbon material uniform adsorption is wrapped in boron nitride surface, forms compound package structure.
Preferably, described nano-sized carbon parcel boron nitride composite granule comprises 0.1-30wt% nano-carbon material and 70-99.9wt% boron nitride.
Further, described nano-carbon material includes CNT and/or grapheme material, described CNT includes any one or the combination of two kinds of Yi Sang in multi-walled carbon nano-tubes, few-wall carbon nanotube and SWCN, and described grapheme material includes Graphene and/or graphene microchip.
Further, described carbon nanotube diameter is preferably 0.4 nm-100 nm, and length is preferably 50 nm-25 μm, and the thickness of described grapheme material is preferably 0.34 nm-10 nm, and average diameter is preferably 500
nm-100μm。
Further, described boron nitride preferably employs the mean diameter hexagonal crystal system boron nitride particle in 500 nm-150 μm.
A kind of preparation method of nano-sized carbon parcel boron nitride composite granule, including: carboxylated nano-carbon material is dispersed in water, and under conditions of accompanying by stirring, it is dividedly in some parts amino functional boron nitride powder, filter after being thoroughly mixed, much filtrate is vacuum dried, it is thus achieved that described nano-sized carbon parcel boron nitride composite granule.
In a typical embodiments, this preparation method may include that and added by nano-carbon material raw material in the salpeter solution that concentration is 2-8M, at the 100-140 DEG C of 1-24 h that refluxes, then filters, by much filtrate washing to neutral, it is thus achieved that described carboxylated nano-carbon material.
In a typical embodiments, this preparation method can also include: including: uses graphene oxide to prepare carboxylated nano-carbon material as nano-carbon material raw material, and prepare described composite granule with obtained carboxylated nano-carbon material, then obtained composite granule is carried out graphene oxide reduction treatment, the graphene oxide reducing process wherein used includes high-temperature hot reduction, microwave reduction, reducing agent gas phase or liquid-phase reduction technique, and the reducing agent wherein used includes hydrogen, sodium borohydride, hydrazine hydrate, ascorbic acid, citric acid, hydroiodic acid or hydrobromic acid.
In a typical embodiments, this preparation method may include that and is dispersed in anhydrous solvent by boron nitride powder, add the amino coupling agent accounting for boron nitride powder body weight 1-30%, mix and blend 1-24 h, 30min-1h is stirred subsequently at 70-100 DEG C, filter and collect much filtrate, it is thus achieved that described amino functional boron nitride powder.
Further, described anhydrous solvent is selected from but any one or the two or more combination that are not limited in dehydrated alcohol, n-butyl alcohol, isopropanol, toluene, dimethylbenzene, benzene, chloroform, dichloromethane and acetone.
Further, described amino coupling agent is selected from but any one or the two or more combination that are not limited in γ-aminopropyl triethoxysilane (KH550), γ-aminopropyl trimethoxysilane (KH540), N-β-(aminoethyl)-γ-aminopropyltriethoxy dimethoxysilane (KH602), N-β-(aminoethyl)-γ-aminopropyltrimethoxysilane (KH900), γ aminopropyltriethoxy diethoxy silane (KH902).
In a typical embodiments, this preparation method may include that and is dispersed in water by carboxylated nano-carbon material, and under conditions of accompanying by high-speed stirred, it is gradually added into amino functional boron nitride powder, filter after mix and blend 10min-2h, by much filtrate 60-100 DEG C of vacuum drying, it is thus achieved that described nano-sized carbon parcel boron nitride composite granule.
Aforesaid high-speed stirred, refers to that mixing speed is at 500-2000 rev/min.
In a typical embodiments, this preparation method may include steps of:
(1) nano-carbon material raw material is added in the salpeter solution that concentration is 2-8 M, filter after 100-140 DEG C of backflow 1-24 h, by much filtrate washing to neutrality, collect standby；
(2) boron nitride powder is dispersed in anhydrous solvent, adds the amino coupling agent accounting for boron nitride powder body weight 1-30%, mix and blend 1-24h, stir 30min-1h at 70-100 DEG C subsequently, then filter, collect much filtrate standby；
(3) step (1) obtained product is dispersed in water, in high-speed stirred, gradually add step (2) obtained product, filter after mix and blend 10min-2h, collect much filtrate, and it is vacuum dried 1-6h at 60-100 DEG C, it is thus achieved that nano-carbon material parcel boron nitride composite granule；
Further, abovementioned steps (2)-(3) are repeated 1 times above by circulation.
Compared with prior art, the invention have the advantages that
(1) pattern individually added at composite of nano-carbon material is changed, using the micron order boron nitride that is easily dispersed as carrier, it is possible to greatly overcome nano-carbon material to add volume content low, difficult scattered deficiency；
(2) nano-carbon material can play the advantage that its infrared emittance is high on boron nitride surface, and then forms conduction of heat and the high efficiency and heat radiation form of heat loss through radiation both of which coupling in heat dissipation composite material；
(3) nano-carbon material does not the most reduce its thermal conductivity on boron nitride surface, and can effectively facilitate the structure of heat conduction network；
(4) use inorganic coupling agent surface-functionalized, it is possible to be prevented effectively from an organic polymer residue difficult problem at obstruction interface, interface Heat transmission, thus keep good heat conductive performance.
Accompanying drawing explanation
Fig. 1 is the electron scanning micrograph of the embodiment of the present invention 1 obtained nano-sized carbon parcel boron nitride composite granule；
Fig. 2 is the electron scanning micrograph of the embodiment of the present invention 3 obtained nano-sized carbon parcel boron nitride composite granule.
Detailed description of the invention
One aspect of the present invention provides a kind of nano-carbon material parcel boron nitride composite granule, it is with boron nitride powder as carrier, play heat filling effect, and wrap up boron nitride powder surface with nano-carbon material, playing infra-red radiation effect, thus have multiple heat dissipation characteristic, it can effectively overcome the problem that simple nano-carbon material adds difficulties in dispersion, thermal conductivity contribution is not enough, and wherein nano-carbon material can also effectively supplement heat conduction network, form rapid thermal diffusion passage.
In one more preferred embodiment, this nano-sized carbon parcel boron nitride composite granule can comprise the compound package structure being mainly wrapped in boron nitride surface by nano-carbon material uniform adsorption and formed.Wherein, nano-carbon material can use previously described CNT, grapheme material etc., and boron nitride can use previously described hexagonal crystal system boron nitride particle etc..
Preferably, this nano-sized carbon parcel boron nitride composite granule can comprise 0.1-30wt% nano-carbon material and 70-99.9wt% boron nitride.
It should be noted that the graphene microchip wherein addressed (Graphene Nanoplatelets or Graphene Nanosheets) refers to that carbon-coating number is more than 10 layers, the thickness ultra-thin Graphene stratiform accumulation body in 5-100 nanometer range.
Another aspect of the present invention provides the preparation method of a kind of nano-carbon material parcel boron nitride composite granule, it is mainly boron nitride powder is surface-functionalized through amino coupling agent, processed through peroxidating carboxyl by nano-carbon material makes its rich surface containing carboxyl, hydroxyl and oxy radical simultaneously, through electrostatic adsorption, nano-carbon material is adsorbed on boron nitride surface after with, prepare described nano-carbon material parcel boron nitride composite granule.
In an exemplary embodiments, this preparation method may include steps of:
(1) nano-carbon material functionalization: by nano-carbon material in 2-8 M concentrated nitric acid solution, 100-140 DEG C of backflow 1-24 h, through filtering, washing to neutral, prepare carboxylated nano-carbon material, collect standby；Wherein, nano-carbon material can use various types of CNT and various forms of grapheme material, such as, Graphene, graphene microchip etc., and grapheme material also can directly select graphene oxide；
(2) boron nitride powder is dispersed in anhydrous solvent, adds the amino coupling agent accounting for boron nitride powder body weight 1-30%, mix and blend 1-24h, stir 30min-1h at 70-100 DEG C subsequently, be collected by filtration and prepare amino functional boron nitride powder；
(3) carboxylated nano-carbon material is dispersed in water, in high-speed stirred, gradually add amino functional boron nitride powder, mix and blend 10min-2h, be collected by filtration, it is vacuum dried 1-6h, it is thus achieved that nano-carbon material parcel boron nitride composite granule through 60-100 DEG C；
(4) when using graphene oxide to do raw material, need to be reduced into Graphene further across reduction technique, corresponding reducing process is as mentioned before.
Further, for improving the nano-carbon material parcel amount on described composite granule surface, repetition abovementioned steps 2 capable of circulation and step 3, that is, nano-carbon material parcel boron nitride composite granule step 3 obtained is dispersed in anhydrous solvent again, and again carry out amino functional process, carry out with carboxylated nano-carbon material the most again mixing, adsorbing, until the nano-carbon material parcel amount on described composite granule surface reaches required standard.
The nano-carbon material parcel boron nitride composite granule of the present invention uses using boron nitride as nano-carbon material carrier, be conducive to interpolation and the dispersion of nano-carbon material, and construct efficient heat-conductivity conducting network, the superior heat conductivility of nano-carbon material and boron nitride can be given full play to, can also effectively utilize the conduction of nano-carbon material, infrared signature simultaneously, it is a kind of outstanding heat filling, in the field such as composite, functional paint, there is significant application value.And, preparation technology route of the present invention is easy, it is easy to amplifies, has important industrialization prospect.
Below in conjunction with some preferred embodiments and accompanying drawing, technical scheme is described in more detail.
Embodiment 1:
By 1 g multi-walled carbon nano-tubes (caliber 20 nm, length 15 μm) in the salpeter solution that concentration is 6 M, 120 DEG C of backflow 6h, filtration washing obtains functionalized multi-wall carbonnanotubes to neutrality, and ultrasonic disperse is standby in water subsequently.Meanwhile, by 10 g boron nitride powder (hexagonal crystal system boron nitride, mean diameter 15 μm) use high-speed stirred to be scattered in dehydrated alcohol, whipping process drips the KH550 coupling agent of 2g, stirring 6h, then raise temperature to 70 DEG C of backflow 30min, the coupling agent that filtration washing is unnecessary, obtain amino functional boron nitride.Then amino functional boron nitride is dispersed in water, whipping process adds functionalized multi-wall carbonnanotubes dispersion liquid, after mix and blend 1h, filtration washing, 60 DEG C of vacuum drying 4h, obtains multi-walled carbon nano-tubes parcel boron nitride composite granule.
Embodiment
2
:
By 1 g SWCN (caliber 20 nm, length 15 μm) in the salpeter solution that concentration is 6 M, 120 DEG C of backflow 6h, filtration washing to neutrality obtains carboxylated SWCN, and ultrasonic disperse is standby in water subsequently.Meanwhile, 10 g boron nitride powders (mean diameter 15 μm) employing high-speed stirred is scattered in dehydrated alcohol, whipping process drips the KH550 coupling agent of 2g, stirring 6h, then raise temperature to 70 DEG C of backflow 30min, the coupling agent that filtration washing is unnecessary, obtain amino functional boron nitride.Then amino functional boron nitride is dispersed in water, whipping process adds carboxylated single-walled carbon nanotube dispersion liquid, after mix and blend 1h, filtration washing, 60 DEG C of vacuum drying 4h, obtain SWCN parcel boron nitride composite granule.
Embodiment
3
:
By 0.1 g graphene oxide (average thickness 0.6
Nm, diameter 10 μm) ultrasonic disperse is standby in water.Meanwhile, 10 g boron nitride powders (mean diameter 15 μm) employing high-speed stirred is scattered in dehydrated alcohol, whipping process drips the KH550 coupling agent of 2g, stirring 6h, then raise temperature to 70 DEG C of backflow 30min, the coupling agent that filtration washing is unnecessary, obtain amino functional boron nitride.Then being dispersed in water by amino functional boron nitride, add graphene oxide dispersion, after mix and blend 1h, filtration washing, 60 DEG C of vacuum drying 4h in whipping process, 900 DEG C of hydrogen reducings obtain Graphene parcel boron nitride composite granule.
Embodiment
4
:
By 1 g graphene microchip (average thickness 2 nm, diameter 10 μm) in concentration is 6 M salpeter solutions, 120 DEG C are refluxed 6 hours, and filtration washing to neutrality obtains carboxylated graphene microchip, and ultrasonic disperse is standby in water subsequently.Meanwhile, 10 g boron nitride powders (mean diameter 15 μm) employing high-speed stirred is scattered in dehydrated alcohol, whipping process drips the KH550 coupling agent of 2g, stirring 6h, then raise temperature to 70 DEG C of backflow 30min, the coupling agent that filtration washing is unnecessary, obtain amino functional boron nitride.Then amino functional boron nitride is dispersed in water, whipping process adds carboxylated graphene microchip dispersion liquid, after mix and blend 1h, filtration washing, 60 DEG C of vacuum drying 4h, obtains graphene microchip parcel boron nitride composite granule.
Described above, and in the embodiment shown on drawing, can not resolve is limited determines the design philosophy of the present invention.Holding identical skill in the technical field of the present invention can be by the technical thought of the present invention with various form improvement change, and such improvement and change are interpreted as belonging in protection scope of the present invention.
Claims (8)
1. a nano-sized carbon parcel boron nitride composite granule, it is characterised in that comprise boron nitride particle and nano-carbon material, Qi Zhongna
Rice material with carbon element uniform adsorption is wrapped in boron nitride surface and forms compound package structure, and described boron nitride particle is that mean diameter is 500
The hexagonal crystal system boron nitride particle of nm-150 μm, described nano-carbon material is selected from CNT and/or grapheme material, described carbon
Nanotube is selected from multi-walled carbon nano-tubes, few-wall carbon nanotube, any one or two or more combination, institute of SWCN
State grapheme material selected from Graphene and/or graphene microchip.
2. nano-sized carbon parcel boron nitride composite granule as claimed in claim 1, it is characterised in that it comprises 0.1-30wt% and receives
Rice material with carbon element and 70-99.9wt% boron nitride particle；
Wherein, described carbon nanotube diameter is 0.4nm-100nm, a length of 50nm-25 μm, the thickness of described grapheme material
Degree is 0.34nm-10nm, and average diameter is 500nm-100 μm.
3. the preparation method of nano-sized carbon parcel boron nitride composite granule according to any one of claim 1-2, it is characterised in that including:
Carboxylated nano-carbon material is dispersed in water, and under conditions of accompanying by stirring, is dividedly in some parts amino functional boron nitride powder,
Filter after being thoroughly mixed, much filtrate is vacuum dried, it is thus achieved that described nano-sized carbon parcel boron nitride composite granule.
The preparation method of nano-sized carbon parcel boron nitride composite granule the most according to claim 3, it is characterised in that including: will receive
Rice material with carbon element raw material adds in the salpeter solution that concentration is 2-8M, at the 100-140 DEG C of 1-24h that refluxes, then filters, will leach
Thing washing is to neutral, it is thus achieved that described carboxylated nano-carbon material.
The preparation method of nano-sized carbon parcel boron nitride composite granule the most according to claim 4, it is characterised in that including: use
Graphene oxide prepares carboxylated nano-carbon material as nano-carbon material raw material, and prepares institute with obtained carboxylated nano-carbon material
State composite granule, then obtained composite granule is carried out graphene oxide reduction treatment, the graphene oxide reduction work wherein used
Skill includes high-temperature hot reduction, microwave reduction, reducing agent gas phase or liquid-phase reduction technique, the reducing agent wherein used include hydrogen,
Sodium borohydride, hydrazine hydrate, ascorbic acid, citric acid, hydroiodic acid or hydrobromic acid.
The preparation method of nano-sized carbon parcel boron nitride composite granule the most according to claim 3, it is characterised in that including: by nitrogen
Change boron powder body to be dispersed in anhydrous solvent, add and account for the amino coupling agent of boron nitride powder body weight 1-30%, mix and blend 1-24h,
Stir 30min-1h at 70-100 DEG C subsequently, filter and collect much filtrate, it is thus achieved that described amino functional boron nitride powder；
Described anhydrous solvent include dehydrated alcohol, n-butyl alcohol, isopropanol, toluene, dimethylbenzene, benzene, chloroform, dichloromethane and
Any one or two or more combination in acetone；
Described amino coupling agent include γ-aminopropyl triethoxysilane, γ-aminopropyl trimethoxysilane, N-β-(aminoethyl)-γ-
Aminopropyltriethoxy dimethoxysilane, N-β-(aminoethyl)-γ-aminopropyltrimethoxysilane, γ aminopropyltriethoxy diethoxy
Any one or two or more combination in silane.
The preparation method of nano-sized carbon parcel boron nitride composite granule the most according to claim 3, it is characterised in that including: by carboxylic
Base nano-carbon material is dispersed in water, and under conditions of accompanying by high-speed stirred, is gradually added into amino functional boron nitride powder,
Filter after mix and blend 10min-2h, by much filtrate 60-100 DEG C of vacuum drying, it is thus achieved that described nano-sized carbon parcel boron nitride is combined
Powder body.
8. according to the preparation method of nano-sized carbon parcel boron nitride composite granule according to any one of claim 1-2, it is characterised in that
Comprise the steps:
(1) nano-carbon material raw material is added in the salpeter solution that concentration is 2-8M, mistake after 100-140 DEG C of backflow 1-24h
Filter, by much filtrate washing to neutral, collects standby；
(2) boron nitride powder is dispersed in anhydrous solvent, adds the amino coupling agent accounting for boron nitride powder body weight 1-30%, mixed
Close stirring 1-24h, stir 30min-1h at 70-100 DEG C subsequently, then filter, collect much filtrate standby；
(3) step (1) obtained product is dispersed in water, high-speed stirred gradually adds step (2) obtained product, mixed
Filter after closing stirring 10min-2h, collect much filtrate, and be vacuum dried 1-6h at 60-100 DEG C, it is thus achieved that nano-carbon material parcel nitrogen
Change boron composite powder；
Further, abovementioned steps (2)-(3) are repeated 1 times above by circulation.
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| CN109593261A (en) * | 2018-11-30 | 2019-04-09 | 李敏 | A kind of wind-power electricity generation specialized power cable material and preparation method thereof |
| CN109897341B (en) * | 2019-02-26 | 2022-06-17 | 嘉兴烯成新材料有限公司 | Composite material of modified graphene reinforced epoxy resin and preparation method |
| CN110105651B (en) * | 2019-06-03 | 2021-07-30 | 合肥工业大学 | Heat-conducting insulating polyethylene composite material for wire and cable insulating layer |
| CN111101681A (en) * | 2020-01-03 | 2020-05-05 | 江苏肯帝亚木业有限公司 | High-wear-resistance scratch-resistant carbon nano heat-conducting composite floor |
| CN111892468B (en) * | 2020-07-24 | 2021-10-08 | 西安近代化学研究所 | alpha-AlH3/Al2O3/C60Double-shell structure compound, synthesis method and application |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006062947A2 (en) * | 2004-12-09 | 2006-06-15 | Nanosys, Inc. | Nanowire-based membrane electrode assemblies for fuel cells |
| CN101857221A (en) * | 2010-05-21 | 2010-10-13 | 哈尔滨工业大学 | Method for preparing graphene compounds and graphene oxide compounds with high efficiency |
| CN102502535A (en) * | 2011-11-28 | 2012-06-20 | 镇江中孚复合材料有限公司 | Method for preparing carbon coated hexagonal boron nitride |
-
2014
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006062947A2 (en) * | 2004-12-09 | 2006-06-15 | Nanosys, Inc. | Nanowire-based membrane electrode assemblies for fuel cells |
| CN101857221A (en) * | 2010-05-21 | 2010-10-13 | 哈尔滨工业大学 | Method for preparing graphene compounds and graphene oxide compounds with high efficiency |
| CN102502535A (en) * | 2011-11-28 | 2012-06-20 | 镇江中孚复合材料有限公司 | Method for preparing carbon coated hexagonal boron nitride |
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