CN103756428A - Flat heat dissipation coating - Google Patents

Abstract

The invention discloses a flat heat dissipation coating which consists of the following raw materials in parts by weight: 90-94 parts of ultrahigh-molecular weight polyethylene, 2-4 parts of rosin, 1-2 parts of 2,4,4'-trichloro-2'-hydroxyl diphenyl ether, 1-2 parts of potassium hydrogen sulfate, 7-10 parts of vermiculite powder, 1-2 parts of polyimide, 4-6 parts of polyvinylidene fluoride, 2-3 parts of bis-tetradeca-carbon alcohol ester, 2-3 parts of charcoal powder, 0.6-1 part of sebacic dihydrazide, 2-3 parts of zinc borate, 6-8 parts of epoxy triglyceride, 1-2 parts of hydroxypropyl methyl cellulose and 7-10 parts of composite filler. The coating layer of the powder coating disclosed by the invention is continuous and tough and has good flatness, strong adhesion, good stripping resistance, perfect impact resistance and good heat dissipation effect.

Description

A kind of unglazed heat radiation coating

Technical field

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

The present invention is achieved by the following technical solutions:

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

Ultrahigh molecular weight polyethylene(UHMWPE) 90-94, rosin 2-4,2, the chloro-2'-dihydroxy diphenyl ether of 4,4'-tri-1-2, sal enixum 1-2, vermiculite power 7-10, polyimide 1-2, polyvinylidene difluoride (PVDF) 4-6, two ten four carbon alcohols ester 2-3, wood charcoal powder 2-3, sebacic dihydrazide 0.6-1, zinc borate 2-3, epoxidation tri-glyceride 6-8, Vltra tears 1-2, compounded mix 7-10;

Described compounded mix is comprised 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; The different monooctyl ester of above-mentioned wood charcoal powder and polyacrylic acid 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 each raw material of residue, abundant ball milling, and granulation, particle diameter is 2-4 μ m, obtains described compounded mix.

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

Above-mentioned two ten four carbon alcohols esters are mixed with wood charcoal powder, preheating 2-3 minute at 80-100 ℃, be cooled to ball milling after normal temperature, add each raw material of residue, mix, send into twin screw extruder, carry out melting, extrude and granulation, wear into fine powder and cross 120-160 mesh sieve, obtaining described unglazed heat radiation coating.

Advantage of the present invention is:

Powder coating coated coating coating of the present invention is continuous, tough and tensile, and planeness is good, strong adhesion, and stripper-resistance is good, also has good shock resistance, good heat dissipation effect.

Embodiment

Embodiment 1

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

Ultrahigh molecular weight polyethylene(UHMWPE) 90-94, rosin 2,2, the chloro-2'-dihydroxy diphenyl ether 2 of 4,4'-tri-, sal enixum 2, vermiculite power 10, polyimide 1, the two ten four carbon alcohols esters 2 of polyvinylidene difluoride (PVDF) 4-, wood charcoal powder 2, sebacic dihydrazide 0.6, zinc borate 2, epoxidation tri-glyceride 6, Vltra tears 1, compounded mix 7;

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

Agalmatolite 30, Zirconium tetrafluoride 3, kaolin 40, wood charcoal powder 2, 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; The different monooctyl ester of above-mentioned wood charcoal powder and polyacrylic acid is mixed, and dispersed with stirring is 5 minutes at 130 ℃, adds powder obtained above, and being stirred to temperature is 80 ℃, adds each raw material of residue, abundant ball milling, and granulation, particle diameter is 4 μ m, obtains described compounded mix.

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

Above-mentioned two ten four carbon alcohols esters are mixed with wood charcoal powder, and at 100 ℃, preheating is 3 minutes, is cooled to ball milling after normal temperature, add each raw material of residue, mix, send into twin screw extruder, carry out melting, extrude and granulation, wear into fine powder and cross 160 mesh sieves, obtain described unglazed heat radiation coating.

Performance test:

Appearance of film: smooth smooth, without shrinkage cavity, free of pinholes;

Test is just recoiling: by;

Pencil hardness test: 2H is without scuffing;

Bending hardness test: 0T is curved to be passed through.

Claims (2)

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

Ultrahigh molecular weight polyethylene(UHMWPE) 90-94, rosin 2-4,2, the chloro-2'-dihydroxy diphenyl ether of 4,4'-tri-1-2, sal enixum 1-2, vermiculite power 7-10, polyimide 1-2, polyvinylidene difluoride (PVDF) 4-6, two ten four carbon alcohols ester 2-3, wood charcoal powder 2-3, sebacic dihydrazide 0.6-1, zinc borate 2-3, epoxidation tri-glyceride 6-8, Vltra tears 1-2, compounded mix 7-10;

Described compounded mix is comprised 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; The different monooctyl ester of above-mentioned wood charcoal powder and polyacrylic acid 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 each raw material of residue, abundant ball milling, and granulation, particle diameter is 2-4 μ m, obtains described compounded mix.

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

Above-mentioned two ten four carbon alcohols esters are mixed with wood charcoal powder, preheating 2-3 minute at 80-100 ℃, be cooled to ball milling after normal temperature, add each raw material of residue, mix, send into twin screw extruder, carry out melting, extrude and granulation, wear into fine powder and cross 120-160 mesh sieve, obtaining described unglazed heat radiation coating.