CN107556866A - A kind of graphene-based scumbling high efficiency and heat radiation coating and preparation method thereof - Google Patents
A kind of graphene-based scumbling high efficiency and heat radiation coating and preparation method thereof Download PDFInfo
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- CN107556866A CN107556866A CN201710729111.XA CN201710729111A CN107556866A CN 107556866 A CN107556866 A CN 107556866A CN 201710729111 A CN201710729111 A CN 201710729111A CN 107556866 A CN107556866 A CN 107556866A
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- graphene
- scumbling
- heat radiation
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Abstract
The invention discloses a kind of graphene-based scumbling high efficiency and heat radiation coating, include the raw material of following parts by weight：Mono-layer graphite dilute 0.3 3, matrix resin 30 70, coalescents 3 20, dispersant 0.1 1, defoamer 0.1 1, coupling agent 0.1 1, inorganic filler 3 30, aqueous diluent 5 20.The present invention uses the nano-graphene of high thermal conductivity coefficient, good covering power can still be kept by the heat radiation coating of scumbling, paint film adhesion can be significantly improved, lift the capacity of heat transmission, aqueous solvent has no irritating odor discharge, VOC emission can be substantially reduced, there is good environment protecting, it is durable in use.
Description
Technical field
The present invention relates to heat radiation coating field, and in particular to a kind of graphene-based scumbling high efficiency and heat radiation coating and its preparation side
Method.
Background technology
In recent years, with the progress of industrial technology, increasingly harsh is required to the service life of electronic equipment, and electronic equipment
High efficiency and heat radiation be influence its service life an important factor for one of, the radiating of especially delicate electronic device causes increasingly
More concerns.Traditional radiating mode includes heat transfer, heat radiation and thermal convection current, and heat transfer is particularly critical in small space,
Traditional coating majority does not possess heat sinking function, or radiating efficiency is relatively low.The raising of heat conductivility will greatly increase electronic equipment
Performance and service life.
Traditional heat-conductive coating includes the addition such as organic siliconresin, epoxy resin, phenolic resin, acrylic acid, polyurethane, all
Such as：The inorganic fillers such as aluminum oxide, magnesia, boron nitride, beryllium oxide, it has good heat-conducting effect, but the thick painting of most needs
About 100 μm.Graphene has good heat-conducting effect and excellent chemical stability as novel heat-conducting material, and its particle is small,
The characteristics of strong covering power, is by extensive concern.Therefore exploitation has the graphene-based scumbling heat radiation coating of efficient radiating efficiency particularly
It is important.
The content of the invention
To make up the deficiencies in the prior art, the present invention provides a kind of graphene-based scumbling high efficiency and heat radiation coating and its preparation side
Method, there is the characteristics of water-soluble, scumbling, high efficiency and heat radiation.
The present invention is achieved through the following technical solutions：
A kind of graphene-based scumbling high efficiency and heat radiation coating, it is characterized in that：Include the raw material of following parts by weight：Individual layer stone
Ink dilute 0.3-3, matrix resin 30-70, coalescents 3-20, dispersant 0.1-1, defoamer 0.1-1, coupling agent 0.1-1 are inorganic
Filler 3-30, aqueous diluent 5-20；The matrix resin is the mixture of acrylic emulsion and organic-silicon-modified resin, propylene
The mass ratio of yogurt liquid and organic-silicon-modified resin is（20-40）：（10-30）；The viscosity of matrix resin is more steady when making coating
Fixed, firm, the mixture of acrylic emulsion and organic-silicon-modified resin is good heat-conductive coating.
Preferably, the coalescents include ethylene glycol, glycerine, propandiol butyl ether, one kind in lauryl alcohol ester or several
Kind；Ethylene glycol, glycerine, propandiol butyl ether, lauryl alcohol ester can change the surface tension of coating, with good attachment
Power.
A kind of graphene-based scumbling high efficiency and heat radiation coating of the present invention, in addition to organosiloxane levelling agent.
Further, the organosiloxane levelling agent is BYK370-375.
Preferably, the dispersant is BYK180-185；The coupling agent is KH560, and graphene is scattered in KH560
Property it is preferable, it is uniform to be advantageous to material radiating.
Preferably, the defoamer includes organic silicon defoamer and polyether antifoam agent, wherein, organic silicon defoamer is
BYK021-027, polyether antifoam agent BYK011.
Preferably, the thickness of the single-layer graphene is less than 10nm, and radius-thickness ratio is more than 1000:1, the thickness of graphene and footpath
Thickness rate can have a strong impact on its dispersion effect in coating, under the selection, graphene can preferably be dispersed in resin and other
In auxiliary agent.
Preferably, the inorganic filler is one or more of in beryllium oxide, boron nitride, aluminium powder, barium sulfate, diatomite
Mixture, it is respectively provided with the heat-conducting effect of good inorganic material.
Preferably, the aqueous diluent is in water, ethanol, isopropanol, 1-METHYLPYRROLIDONE, epoxy active diluent
One or more of mixed solvents；The epoxy active diluent is carbon 12 to myristyl glycidol ether；By graphite
Alkene, which is dispersed in aqueous solvent, to be avoided using benzene class organic solvent, reduces the use of noxious material.
A kind of preparation method of graphene-based scumbling high efficiency and heat radiation coating of the present invention, comprises the following steps：
（1）Matrix resin is mixed with dispersant, defoamer, mechanical dispersion 10-20min, obtains component A；
（2）Inorganic filler is added into component A, mechanical dispersion 10-20min, obtains component B；
（3）Graphene slurry is made with aqueous diluent, coupling agent and coalescents mixing ultrasonic disperse 1-3h in graphene, is obtained
Component C；
（4）Component C is added in component B, is uniformly dispersed, filtering and discharging.
The beneficial effects of the invention are as follows：The present invention uses the nano-graphene of high thermal conductivity coefficient, passes through the heat-radiation coating of scumbling
Material can still keep good covering power, can significantly improve paint film adhesion, lift the capacity of heat transmission, and aqueous solvent is non-stimulated
Property smell discharge, VOC emission can be substantially reduced, there is good environment protecting, it is durable in use.
Brief description of the drawings
Accompanying drawing 1 is the radiation efficiency comparison diagram of the heat radiation coating of the spraying different-thickness in embodiment 1；
Accompanying drawing 2 is the radiation efficiency comparison diagram of the heat radiation coating of the spraying different-thickness in embodiment 2；
Accompanying drawing 3 is the heat radiation coating paint film comparison diagram of the spraying different-thickness in embodiment 1.
Embodiment
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description, to help the skill of this area
Art personnel have more complete, accurate and deep understanding, protection scope of the present invention bag to inventive concept of the invention, technical scheme
Include but be not limited to following examples, it is any to technical scheme on the premise of without departing from spirit and scope
Details and the modification made of form each fall within protection scope of the present invention.
Embodiment 1
The graphene-based scumbling high efficiency and heat radiation coating of the present embodiment, include the raw material of following percentage by weight：Acrylic emulsion
20%th, modifying epoxy resin by organosilicon 30%, dispersant（BYK180-185）0.7%th, defoamer（BYK021-027、BYK011）
0.8%th, beryllium oxide 15%, aluminium powder 3%, single-layer graphene 1%, KH560 0.1%, 1-METHYLPYRROLIDONE 2.5%, ethylene glycol 18%, water
8.9%。
The preparation method of the graphene-based scumbling high efficiency and heat radiation coating, comprises the following steps：
（1）Acrylic emulsion, modifying epoxy resin by organosilicon are mixed with dispersant, defoamer, according to 400-1000 revs/min of machine
Tool disperses 10-20min, obtains component A；
（2）Beryllium oxide, aluminium powder are added into component A, according to 600-1500 revs/min of continuation mechanical dispersion 10-20min, obtains component
B；
（3）Graphene slurry is made in single-layer graphene and KH560,1-METHYLPYRROLIDONE, ethylene glycol, water ultrasonic disperse 2h,
Obtain component C；
（4）Component C is added in component B, continues scattered 1h at a high speed, more than 1000 revs/min, adds water, regulation viscosity filtering
Discharging.
Testing experiment：Coating is sprayed on tinplate, respectively 20 μm of film, 30 μm, 40 μm, 50 μm, 60 μm, 70 μm,
Calorimetric radiation efficiency, and contrasted with blank assay, as a result as shown in Figure 1, the paint film figure such as institute of accompanying drawing 3 of different coating thicknesses
Show；Wherein 30 μm of film, surface drying 3-5 minutes, 105 DEG C of solidification 2h, normal temperature maintenance 24h, test salt spray resistance ＞ 96h, adhesive force ＞ 1
Level, hardness 4H, heat conduction efficiency lifting 503%.
Embodiment 2
The graphene-based scumbling high efficiency and heat radiation coating of the present embodiment, include the raw material of following percentage by weight：Acrylic emulsion
30%th, modifying epoxy resin by organosilicon 20%, dispersant 0.7%, defoamer 0.8%, beryllium oxide 10%, aluminium powder 5%, single-layer graphene
1.2%th, KH560 0.1%, 1-METHYLPYRROLIDONE 2.5%, ethylene glycol 18%, water 11.7%.
The preparation method of the graphene-based scumbling high efficiency and heat radiation coating, comprises the following steps：
（1）Acrylic emulsion, modifying epoxy resin by organosilicon are mixed with dispersant, defoamer, according to 400-1000 revs/min of machine
Tool disperses 10-20min, obtains component A；
（2）Beryllium oxide, aluminium powder are added into component A, according to 600-1500 revs/min of continuation mechanical dispersion 10-20min, obtains component
B；
（3）Graphene slurry is made in single-layer graphene and KH560,1-METHYLPYRROLIDONE, ethylene glycol, water ultrasonic disperse 2h,
Obtain component C；
（4）Component C is added in component B, continues scattered 1h at a high speed, more than 1000 revs/min, adds water, regulation viscosity filtering
Discharging.
Testing experiment：Coating is sprayed on tinplate, respectively 20 μm of film, 30 μm, 40 μm, 50 μm, 60 μm, 70 μm,
Calorimetric radiation efficiency, and contrasted with blank assay, as a result as shown in Figure 1；Wherein 30 μm of film, surface drying 3-5 minutes, 105 DEG C
Solidify 2h, normal temperature maintenance 24h, 1 grade, hardness 4H of test salt spray resistance ＞ 96h, adhesive force ＞, heat conduction efficiency lifting 423%.
Claims (10)
- A kind of 1. graphene-based scumbling high efficiency and heat radiation coating, it is characterised in that：Include the raw material of following parts by weight：Mono-layer graphite Dilute 0.3-3, matrix resin 30-70, coalescents 3-20, dispersant 0.1-1, defoamer 0.1-1, coupling agent 0.1-1 are inorganic to fill out Expect 3-30, aqueous diluent 5-20；The matrix resin is the mixture of acrylic emulsion and organic-silicon-modified resin, acrylic acid Emulsion and the mass ratio of organic-silicon-modified resin are（20-40）：（10-30）.
- A kind of 2. graphene-based scumbling high efficiency and heat radiation coating according to claim 1, it is characterised in that：The coalescents Including the one or more in ethylene glycol, glycerine, propandiol butyl ether, lauryl alcohol ester.
- A kind of 3. graphene-based scumbling high efficiency and heat radiation coating according to claim 1, it is characterised in that：Also include organosilicon Oxygen alkane levelling agent.
- A kind of 4. graphene-based scumbling high efficiency and heat radiation coating according to claim 3, it is characterised in that：Organic silica Alkane levelling agent is BYK370-375.
- A kind of 5. graphene-based scumbling high efficiency and heat radiation coating according to claim 1, it is characterised in that：The dispersant is BYK180-185；The coupling agent is KH560.
- A kind of 6. graphene-based scumbling high efficiency and heat radiation coating according to claim 1, it is characterised in that：The defoamer bag Organic silicon defoamer and polyether antifoam agent are included, wherein, organic silicon defoamer BYK021-027, polyether antifoam agent BYK011.
- A kind of 7. graphene-based scumbling high efficiency and heat radiation coating according to claim 1, it is characterised in that：The mono-layer graphite The thickness of alkene is less than 10nm, and radius-thickness ratio is more than 1000:1.
- A kind of 8. graphene-based scumbling high efficiency and heat radiation coating according to claim 1, it is characterised in that：The inorganic filler For one or more of mixtures in beryllium oxide, boron nitride, aluminium powder, barium sulfate, diatomite.
- A kind of 9. graphene-based scumbling high efficiency and heat radiation coating according to claim 1, it is characterised in that：The water-based dilution Agent is one or more of mixed solvents in water, ethanol, isopropanol, 1-METHYLPYRROLIDONE, epoxy active diluent；It is described Epoxy active diluent is carbon 12 to myristyl glycidol ether.
- 10. a kind of preparation method of graphene-based scumbling high efficiency and heat radiation coating according to any one of claim 1-8, its It is characterised by：Comprise the following steps：Matrix resin is mixed with dispersant, defoamer, mechanical dispersion 10-20min, obtains component A；Inorganic filler is added into component A, mechanical dispersion 10-20min, obtains component B；Graphene slurry is made with aqueous diluent, coupling agent and coalescents mixing ultrasonic disperse 1-3h in graphene, obtains group Divide C；Component C is added in component B, is uniformly dispersed, filtering and discharging.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109370366A (en) * | 2018-08-17 | 2019-02-22 | 菏泽学院 | A kind of anti-corrosion heat radiation coating and preparation method thereof based on the doping of functionalized graphite's alkene |
| CN109486319A (en) * | 2018-10-22 | 2019-03-19 | 深圳市嘉达高科产业发展有限公司 | A kind of heat radiation coating and preparation method thereof |
| CN109486321A (en) * | 2018-10-30 | 2019-03-19 | 山东安恒华盛石墨烯材料科技有限公司 | A kind of watersoluble plumbago alkene heat-dissipation paint and its preparation method and application |
| CN109880457A (en) * | 2019-01-21 | 2019-06-14 | 东莞市鹏威能源科技有限公司 | Aqueous environment-friendly size of a kind of use for electronic products graphene heat dissipation and preparation method thereof |
| CN112375480A (en) * | 2020-11-17 | 2021-02-19 | 厦门海洋南方特种光电材料有限公司 | Water-based graphene coating for heating plate and preparation method thereof |
| CN112778908A (en) * | 2019-11-05 | 2021-05-11 | 广东万爱建筑科技有限公司 | Graphene heat dissipation coating applied to electronic industry to replace heat conduction silica gel |
| CN113789098A (en) * | 2021-11-04 | 2021-12-14 | 四川恒力盛泰石墨烯科技有限公司 | Preparation method of efficient heat dissipation graphene heat dissipation coating |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109370366A (en) * | 2018-08-17 | 2019-02-22 | 菏泽学院 | A kind of anti-corrosion heat radiation coating and preparation method thereof based on the doping of functionalized graphite's alkene |
| CN109486319A (en) * | 2018-10-22 | 2019-03-19 | 深圳市嘉达高科产业发展有限公司 | A kind of heat radiation coating and preparation method thereof |
| CN109486321A (en) * | 2018-10-30 | 2019-03-19 | 山东安恒华盛石墨烯材料科技有限公司 | A kind of watersoluble plumbago alkene heat-dissipation paint and its preparation method and application |
| CN109880457A (en) * | 2019-01-21 | 2019-06-14 | 东莞市鹏威能源科技有限公司 | Aqueous environment-friendly size of a kind of use for electronic products graphene heat dissipation and preparation method thereof |
| CN112778908A (en) * | 2019-11-05 | 2021-05-11 | 广东万爱建筑科技有限公司 | Graphene heat dissipation coating applied to electronic industry to replace heat conduction silica gel |
| CN112375480A (en) * | 2020-11-17 | 2021-02-19 | 厦门海洋南方特种光电材料有限公司 | Water-based graphene coating for heating plate and preparation method thereof |
| CN113789098A (en) * | 2021-11-04 | 2021-12-14 | 四川恒力盛泰石墨烯科技有限公司 | Preparation method of efficient heat dissipation graphene heat dissipation coating |
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