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The manufacture method of anti-cracking unsaturated polyester paint

A manufacturing method and unsaturated technology, used in polyester coatings, fire-retardant coatings, coatings, etc., can solve the problems of easy occurrence of substrate adhesion, affecting production efficiency, and large shrinkage of paint films, and reduce drying shrinkage. , Prevent cracking, good adhesion

Active Publication Date: 2021-03-30
广东百川化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The disadvantage of unsaturated polyester paint is that the shrinkage rate of the paint film is relatively large during curing, and the adhesion to the substrate is prone to problems. Because the one-time construction is thick, it is easy to crack after drying. Accumulate thick layers of paint, and it is easy to crack after drying, causing rework and affecting production efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A kind of manufacture method of anti-cracking unsaturated polyester paint, comprises the following steps:

[0021] S1: Preparation of modified filler

[0022] Dissolve 100ml of toluene in the medium, add 2.0g of nano-sized magnesium hydroxide powder with a particle size of <100nm, ultrasonically disperse for 15min, slowly add 1.8g of 3-bromopropyltrimethoxysilane, stir well, keep warm in a water bath at 70°C for 20h, and filter to obtain The white precipitate was washed with toluene and absolute ethanol respectively, and freeze-dried to obtain white powder A. Weighed 1g of white powder A and 0.5g of sodium azide, dispersed in 200ml of diformamide, and kept under nitrogen protection at 70°C. Stir for 20 hours, wash the precipitate with dimethylamide and absolute ethanol, freeze-dry to obtain white powder B, weigh 10g of lignin acetate, add 120ml of 1mol / L sodium hydroxide solution and stir to dissolve, add bromopropane 10g, Insulate and react at 70°C for 3 hours. After ...

Embodiment 2

[0032] A kind of manufacture method of anti-cracking unsaturated polyester paint, comprises the following steps:

[0033] S1: Preparation of modified filler

[0034] Dissolve 100ml of toluene in the medium, add 2.0g of nano-sized magnesium hydroxide powder with a particle size of <100nm, ultrasonically disperse for 15min, slowly add 1.8g of 3-bromopropyltrimethoxysilane, stir well, keep warm in a water bath at 70°C for 20h, and filter to obtain The white precipitate was washed with toluene and absolute ethanol respectively, and freeze-dried to obtain white powder A. Weighed 1g of white powder A and 0.5g of sodium azide, dispersed in 200ml of diformamide, and kept under nitrogen protection at 70°C. Stir for 20 hours, wash the precipitate with dimethylamide and absolute ethanol, freeze-dry to obtain white powder B, weigh 10g of lignin acetate, add 120ml of 1mol / L sodium hydroxide solution and stir to dissolve, add bromopropane 10g, Insulate and react at 70°C for 3 hours. After ...

Embodiment 3

[0043] A kind of manufacture method of anti-cracking unsaturated polyester paint, comprises the following steps:

[0044] S1: Preparation of modified filler

[0045]Dissolve 100ml of toluene in the medium, add 2.0g of nano-sized magnesium hydroxide powder with a particle size of <100nm, ultrasonically disperse for 15min, slowly add 1.8g of 3-bromopropyltrimethoxysilane, stir well, keep warm in a water bath at 70°C for 20h, and filter to obtain The white precipitate was washed with toluene and absolute ethanol respectively, and freeze-dried to obtain white powder A. Weighed 1g of white powder A and 0.5g of sodium azide, dispersed in 200ml of diformamide, and kept under nitrogen protection at 70°C. Stir for 20 hours, wash the precipitate with dimethylamide and absolute ethanol, freeze-dry to obtain white powder B, weigh 10g of lignin acetate, add 120ml of 1mol / L sodium hydroxide solution and stir to dissolve, add bromopropane 10g, Insulate and react at 70°C for 3 hours. After c...

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Abstract

The invention relates to a preparation method of anti-cracking unsaturated polyester varnish. The preparation method comprises the following steps: modified filler preparation, main varnish raw material preparation and proportioning, and weighing and subpackaging. The anti-cracking unsaturated polyester varnish comprises 100 parts of main varnish, 1.5-2.5 parts of an initiator, 1-2 parts of an accelerant and 30-40 parts of a diluent. The main varnish comprises an anti-cracking agent and modified filler. By adding the anti-cracking gent and the modified inorganic filler, the film has a good adhesive force, dryness and cracks induced by construction of thick film are avoided, and the construction efficiency is improved.

Description

technical field [0001] The invention relates to the field of unsaturated polyester paint, in particular to a method for manufacturing an anti-cracking unsaturated polyester paint. Background technique [0002] Unsaturated polyester coating, that is, UPE coating, refers to the coating with air-drying unsaturated polyester resin as the main film-forming substance, which can be made into solvent-free paint, with low VOC, high solid content, good fullness and filling effect The characteristics of the paint film are high hardness, aging resistance, corrosion resistance, easy to adjust and easy to spray, a thick coating can be obtained in one coating, and the construction efficiency is high. It is suitable for furniture made of solid wood, plywood stickers, particleboard, and MDF. Furniture can not only increase the hardness of the topcoat, but also reduce the amount of topcoat. It has high quality, low consumption, time-saving, low pollution and excellent comprehensive performanc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D167/06C09D5/18C09D7/62C09D7/61C09D7/63
CPCC08K2003/2224C08K2003/2241C08K2003/265C08K2201/011C09D5/18C09D167/06C09D7/61C09D7/62C09D7/63C08K13/06C08K9/08C08K3/22C08K3/26C08K5/5425
Inventor 黄显明谢永华
Owner 广东百川化工有限公司
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