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Low-temperature curing epoxy polyester powdery paint used on surface of bakelite and preparation method thereof

An epoxy polyester and powder coating technology, applied in powder coatings, polyester coatings, epoxy resin coatings, etc., can solve the problems of difficult curing and powder coating powder, and achieve the effect of excellent performance

Inactive Publication Date: 2014-01-15
FOSHAN SHUNDE DISTRICT BAILICHI PAINT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of epoxy polyester type powder coating that is used for low temperature curing on bakelite surface and its preparation method, to solve the defects of traditional powder coating such as hard powder coating on bakelite surface and difficult to cure at low temperature.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Weigh each component according to the following weight percentages:

[0032] Polyester resin 20.0% ~ 40.0% epoxy resin 20.0% ~ 40.0%;

[0033] Curing accelerator 1.0% ~ 3.0%; Benzoin 0.1% ~ 0.5%;

[0034] Leveling agent 0.5% ~ 2.0%; Booster 0.1% ~ 0.5%;

[0035] Brightening agent 0.1%~1.0%; Wax powder 0.2%~1.0%;

[0036] Pigment 10.0%~30.0%; Filler 10.0%~30.0%.

[0037] Wherein, the polyester resin is a polymer of dibasic carboxylic acid and dibasic alcohol and the end group is a carboxyl group, and the acid value of the polyester resin is 55-75; the epoxy resin is bisphenol A ring Oxygen resin; The curing accelerator is selected from the combination of aniloformimidazole, trimethylbiguanide or both; The leveling agent is an acrylate polymer, preferably a siloxane-modified acrylate polymer; The charging agent is a quaternary ammonium salt charging agent, preferably a polyester-modified fatty acid quaternary ammonium salt; the brightening agent is a polycarboxylate b...

Embodiment 2

[0041] Weigh each component according to the following weight percentages:

[0042] Polyester resin 30.0% Epoxy resin 30.0%;

[0043] Curing accelerator 1.5%; Benzoin 0.3%;

[0044] Leveling agent 1.0%; Booster 0.2%;

[0045] Brightener 0.2%; Wax powder 0.3%;

[0046] Pigment 2 0.0%; Filler 16.5%.

[0047] Wherein, the polyester resin is a polymer of dibasic carboxylic acid and dibasic alcohol and the end group is a carboxyl group, and the acid value of the polyester resin is 55-75; the epoxy resin is bisphenol A ring Oxygen resin; The curing accelerator is selected from the combination of aniloformimidazole, trimethylbiguanide or both; The leveling agent is an acrylate polymer, preferably a siloxane-modified acrylate polymer; The charging agent is a quaternary ammonium salt charging agent, preferably a polyester-modified fatty acid quaternary ammonium salt; the brightening agent is a polycarboxylate brightening agent.

[0048] Mix the above-mentioned polyester resin, epo...

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PUM

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Abstract

The invention discloses a low-temperature curing epoxy polyester powdery paint used on the surface of bakelite. The paint comprises, by weight, 20.0 to 40.0% of a polyester resin, 20.0 to 40.0% of an epoxy resin, 1.0 to 3.0% of a curing accelerator, 0.1 to 0.5% of benzoin, 0.5 to 2.0% of a leveling agent, 0.1 to 0.5% of a charge increasing agent, 0.1 to 1.0% of a lustering additive, 0.2 to 1.0% of wax powder, 10.0 to 30.0% of a pigment and 10.0 to 30.0% of a filling material. The powdery paint provided by the invention has good adhesion on the surface of bakelite and undergoes roasting and curing at a temperature of 150 to 160 DEG C for 10 to 20 min, and a coating with excellent performance can be obtained.

Description

technical field [0001] The invention relates to an epoxy polyester powder coating and a preparation method thereof, in particular to a low-temperature curing epoxy polyester powder coating and a preparation method for bakelite surfaces. Background technique [0002] Bakelite, that is, phenolic plastic, is the bakelite powder obtained by fully mixing phenolic resin with sawdust powder, talc powder, curing agent, lubricant and pigment, heating and kneading, and then heating and pressing in a mold. Bakelite products. Bakelite has high mechanical strength, good insulation, heat resistance and corrosion resistance, so it is often used in the manufacture of electrical materials, such as switches, lamp holders, earphones, telephone cases, instrument cases, etc. [0003] Powder coating is a new type of solvent-free solid powder coating, which has the characteristics of no solvent, no pollution, saving energy and resources, and high mechanical strength of the coating film. Powder c...

Claims

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Application Information

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IPC IPC(8): C09D167/00C09D167/02C09D163/00C09D163/02C09D7/12C09D5/03C08J7/04C08L61/06
Inventor 张旭升
Owner FOSHAN SHUNDE DISTRICT BAILICHI PAINT
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