CN103773124A - Cooling coating - Google Patents

Abstract

The invention discloses a cooling coating, which is prepared from the following raw materials in parts by weight: 81-90 parts of high-density polyethylene, 1-2 parts of tungsten boride, 2-4 parts of epoxy chloropropane, 1-2 parts of poly-tetrahydrofuran ether glycol, 1-2 parts of polybenzimidazole, 4-6 parts of carbon fibers, 8-10 parts of marble powder, 4-5 parts of polyethylene glycol 1000, 5-7 parts of triacetin, 0.1-0.4 parts of dimethyl 2-thiol acetic acid diisooctyl tin and 5-8 parts of composite fillers. The coating disclosed by the invention is strong in impact resistance and weather fastness, simple in preparation method, safe in raw materials, free of a side effect, good in cooling effect, high in surface hardness and strong in mechanical property.

Description

A kind of heat radiation coating

Technical field

The present invention relates generally to a kind of powder coating, relates in particular to a kind of heat radiation coating.

Background technology

Heat conduction and heat radiation coating is widely used in computer, notebook computer, LED illumination, communication, rectifier, and medical treatment and industrial equipments etc. has the field of heat radiation requirement, is mainly coated in the surface of scatterer.

The heat radiation coating of producing at present is generally applied to heat radiation and the heat radiation of LED light fixture of the components and parts of the electronic products such as CPU more, medium for brushing is had relatively high expectations, not strong for more coarse, loose body surface sticking power, result of use is undesirable, and the scope of application is less.

Summary of the invention

The object of the invention is just to provide a kind of heat radiation coating.

The present invention is achieved by the following technical solutions:

A kind of heat radiation coating, is characterized in that what it was made up of the raw material of following weight parts:

High density polyethylene(HDPE) 81-90, tungsten boride 1-2, epoxy chloropropane 2-4, PTMG 1-2, polybenzimidazole 1-2, carbon fibre 4-6, marble flour 8-10, cetomacrogol 1000 4-5, Vanay 5-7, dimethyl dimercapto 2-ethyl hexyl ethanoate tin 0.1-0.4, compounded mix 5-8;

Described compounded mix is made up of the raw material of following weight parts:

Agalmatolite 20-30, Zirconium tetrafluoride 2-3, kaolin 30-40, wood charcoal powder 2-3, Sodium tetrafluoroborate 2-3, beta-diketon 0.2-0.4, the different monooctyl ester 3-4 of polyacrylic acid, 2-ethyl-4 Methylimidazole 0.7-1;

Above-mentioned kaolin is calcined to 2-3 hour at 600-700 ℃, after discharging is cooling, become powder with agalmatolite, Zirconium tetrafluoride mixed grinding; Different to above-mentioned wood charcoal powder and polyacrylic acid monooctyl ester is mixed, and dispersed with stirring 3-5 minute at 100-130 ℃, adds powder obtained above, and being stirred to temperature is 60-80 ℃, adds the each raw material of residue, fully ball milling, and granulation, particle diameter is 2-4 μ m, obtains described compounded mix.

A preparation method for heat radiation coating, comprises the following steps:

Above-mentioned carbon fibre, marble flour, cetomacrogol 1000, Vanay are mixed, 600-800 rev/min of dispersed with stirring 4-6 minute, add the each raw material of residue, mix, send into twin screw extruder, carry out melting, extrude and granulation, wear into fine powder and cross 80-120 mesh sieve, obtain described heat radiation coating.

Advantage of the present invention is:

Coating shock resistance of the present invention and weathering resistance are strong, and preparation method is simple, and materials safety has no side effect, good heat dissipation effect, and surface hardness is high, and mechanical property is strong.

Embodiment

Embodiment 1

A kind of heat radiation coating, it is characterized in that it by following weight parts (kilogram) raw material form:

High density polyethylene(HDPE) 81-90, tungsten boride 1-2, epoxy chloropropane 2-4, PTMG 1-2, polybenzimidazole 1-2, carbon fibre 4-6, marble flour 8-10, cetomacrogol 1000 4-5, Vanay 5-7, dimethyl dimercapto 2-ethyl hexyl ethanoate tin 0.1-0.4, compounded mix 5-8;

Described compounded mix is made up of the raw material of following weight parts:

Agalmatolite 30, Zirconium tetrafluoride 2, kaolin 40, wood charcoal powder 3, Sodium tetrafluoroborate 2, beta-diketon 0.4, the different monooctyl ester 4 of polyacrylic acid, 2-ethyl-4 Methylimidazole 0.7;

Above-mentioned kaolin is calcined 2 hours at 700 ℃, after discharging is cooling, become powder with agalmatolite, Zirconium tetrafluoride mixed grinding; Different to above-mentioned wood charcoal powder and polyacrylic acid monooctyl ester is mixed, and dispersed with stirring 3-5 minute at 100-130 ℃, adds powder obtained above, and being stirred to temperature is 80 ℃, adds the each raw material of residue, fully ball milling, and granulation, particle diameter is 2 μ m, obtains described compounded mix.

A preparation method for heat radiation coating, comprises the following steps:

Above-mentioned carbon fibre, marble flour, cetomacrogol 1000, Vanay are mixed, and 800 revs/min of dispersed with stirring 4 minutes, add the each raw material of residue, mix, send into twin screw extruder, carry out melting, extrude and granulation, wear into fine powder and cross 120 mesh sieves, obtaining described heat radiation coating.

Performance test:

Resistance to solvent: 240 hours, unchanged;

Salt-fog test (1000h): unchanged.

Claims (2)

1. a heat radiation coating, is characterized in that what it was made up of the raw material of following weight parts:

High density polyethylene(HDPE) 81-90, tungsten boride 1-2, epoxy chloropropane 2-4, PTMG 1-2, polybenzimidazole 1-2, carbon fibre 4-6, marble flour 8-10, cetomacrogol 1000 4-5, Vanay 5-7, dimethyl dimercapto 2-ethyl hexyl ethanoate tin 0.1-0.4, compounded mix 5-8;

Described compounded mix is made up of the raw material of following weight parts:

Agalmatolite 20-30, Zirconium tetrafluoride 2-3, kaolin 30-40, wood charcoal powder 2-3, Sodium tetrafluoroborate 2-3, beta-diketon 0.2-0.4, the different monooctyl ester 3-4 of polyacrylic acid, 2-ethyl-4 Methylimidazole 0.7-1;

Above-mentioned kaolin is calcined to 2-3 hour at 600-700 ℃, after discharging is cooling, become powder with agalmatolite, Zirconium tetrafluoride mixed grinding; Different to above-mentioned wood charcoal powder and polyacrylic acid monooctyl ester is mixed, and dispersed with stirring 3-5 minute at 100-130 ℃, adds powder obtained above, and being stirred to temperature is 60-80 ℃, adds the each raw material of residue, fully ball milling, and granulation, particle diameter is 2-4 μ m, obtains described compounded mix.

2. a preparation method for heat radiation coating as claimed in claim 1, is characterized in that comprising the following steps:

Above-mentioned carbon fibre, marble flour, cetomacrogol 1000, Vanay are mixed, 600-800 rev/min of dispersed with stirring 4-6 minute, add the each raw material of residue, mix, send into twin screw extruder, carry out melting, extrude and granulation, wear into fine powder and cross 80-120 mesh sieve, obtain described heat radiation coating.