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Water-soluble baking finish special for compressor and preparation method thereof

A water-soluble, compressor technology, applied in the chemical field, can solve the problems affecting the salt spray resistance of the paint film, the limitation of popularization and application, and the high content of carboxyl groups, so as to improve the salt spray resistance, improve the cross-linking degree of the paint film, and improve the salt spray resistance. The effect of fog performance improvement

Inactive Publication Date: 2009-03-11
GUANGZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high content of carboxyl groups in dipping and baking coatings with water-soluble acrylic acid as the main film-forming substance, the salt spray resistance of the paint film will be affected after curing, and the popularization and application are limited.

Method used

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  • Water-soluble baking finish special for compressor and preparation method thereof
  • Water-soluble baking finish special for compressor and preparation method thereof
  • Water-soluble baking finish special for compressor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0029] 1. Formula: 30.0kg water-soluble epoxy phosphate modified acrylic resin, 6.0kg methyl etherified melamine resin, 11.0kg zinc phosphomolybdate environmental protection anti-rust filler, 2.0kg carbon black, 0.3kg BYK-301 leveling agent, 0.5kg BYK-191 dispersing wetting agent, 0.1kg BYK-028 defoamer, 13.0kg propylene glycol methyl ether and 37.1kg water;

[0030] Among them, the preparation method of epoxy phosphate modified acrylic resin is: add 8.0kg of n-butanol and 4.0kg of epoxy resin to the reaction kettle, stir, heat to 110-120°C, add 1.6kg of phosphoric acid dropwise, and react 2- After 3 hours, cool down to 80-90°C, add 1.6kg of acrylic acid, 12.70kg of acrylic acid ester and 0.1kg of benzoyl peroxide mixture dropwise, react for 3-4 hours, and adjust the pH value to 7.5- 8.0 is fine.

[0031] 2. Preparation method: Take 23kg water-soluble epoxy phosphate modified acrylic resin, add 11.0kg zinc phosphomolybdate antirust filler, 2.0kg carbon black, 0.5kg BYK-191 di...

example 2

[0034] 1. Formula: 40.0kg water-soluble epoxy phosphate modified acrylic resin, 6.0kg butylated melamine resin, 13.0kg zinc phosphomolybdate anti-rust filler, 2.2kg carbon black, 0.6kg EFKA-323 siloxane leveling agent, 0.8kg BYK-192 dispersing wetting agent, 0.3kg HESNIC H221 defoamer, 10.0kg propylene glycol methyl ether and 27.1g water;

[0035] Among them, the preparation method of epoxy phosphate modified acrylic resin is: add 11.3kg of n-butanol and 4.5kg of epoxy resin to the reaction kettle, stir, heat to 110-120°C, add 1.6kg of phosphoric acid dropwise, and react 2- After 3 hours, cool down to 80-90°C, add 2.0kg of acrylic acid, 18.0kg of acrylic acid ester and 0.1kg of benzoyl peroxide mixture dropwise, react for 3-4 hours, and adjust the pH value to 7.5- 8.0 is fine.

[0036] 2. Preparation method: Take 27kg water-soluble epoxy phosphate modified acrylic resin, add 13.0kg zinc phosphomolybdate antirust filler, 2.2kg carbon black, 0.8kg BYK-192 dispersing wetting age...

example 3

[0039] 1. Formula: 33.0kg water-soluble epoxy phosphate modified acrylic resin, 10.0kg methyl etherified melamine resin, 15.5kg zinc phosphomolybdate antirust filler, 3.0kg carbon black, 1.0kg SF-1 dispersing wetting agent, 0.5kg PD-550 non-silicon defoamer, 12.0kg n-butanol and 25.0kg water;

[0040] Among them, the preparation method of epoxy phosphate modified acrylic resin is: add 8.2kg of n-butanol and 3.3kg of epoxy resin to the reaction kettle, stir, heat to 110-120°C, add 1.3kg of phosphoric acid dropwise, and react 2-3 After one hour, cool down to 80-90°C, add 1.7kg of acrylic acid, 16.5kg of acrylic acid ester and 0.1kg of benzoyl peroxide mixture dropwise, react for 3-4 hours, and adjust the pH value to 7.5-8.0 with 1.9 dimethylethanolamine That's it.

[0041]2. Preparation method: Take 26kg water-soluble epoxy phosphate modified acrylic resin, add 15.5kg zinc phosphomolybdate antirust filler, 3.0kg carbon black, 1.0kgSF-1 dispersing wetting agent, 0.3kg PD-550 def...

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Abstract

The invention provides water-soluble baking paint special for a compressor. The paint comprises the following compositions in weight percentage: 30 to 40 percent of epoxy phosphate modified acrylic resin, 5 to 10 percent of methyl-etherified melamine resin, 10 to 20 percent of an antirust filler, 2 to 3 percent of black carbon, 0.1 to 0.5 percent of a defoaming agent, 0.1 to 1.5 percent of a dispersion wetting agent, 10 to 15 percent of a cosolvent and 30 to 40 percent of water; and the water-soluble epoxy phosphate modified acrylic resin is obtained by utilizing epoxy phosphate to modify acrylic resin. The paint has the advantages of nonflammability, nonexplosiveness, low toxicity, low pollution, low cost and the like, is suitable for the application condition and the baking condition of surface coating of the prior refrigerator and the prior air compressor; and the water resistance and the salt spray resistance of a formed paint film can reach or even excess the requirements of the prior solvent-type paint.

Description

technical field [0001] The invention relates to the field of chemistry, in particular to a coating, especially a special baking coating for compressors. Background technique [0002] At present, the baking coatings for refrigerators and air-conditioning compressors are mainly electrophoretic coatings, but the use of electrophoretic coatings requires special coating equipment, and electricity consumption is required during the coating process, and deionized water is required to dilute the coatings. Relatively high. [0003] Water-soluble paint is a new type of paint developed in recent years. Because of the advantages of low energy consumption, low emission, safety and non-toxicity, this kind of paint has become the main development direction of the world's paint. However, due to the high content of carboxyl groups in the dipping and baking coatings with water-soluble acrylic acid as the main film-forming substance, the salt spray resistance of the paint film will be affecte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D151/08C09D161/28C09D5/08
Inventor 刘晓国韦星船柯刚
Owner GUANGZHOU UNIVERSITY
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