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Hydrophobic easy-to-clean powder coating

A powder coating, easy-to-clean technology, applied in the field of coatings, can solve the problems of high raw material cost, unfavorable industrial application, and decreased product surface cleanliness

Inactive Publication Date: 2019-04-26
六安科瑞达新型材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after the powder coating in the prior art is used, it generally needs to invest a lot of manpower for maintenance and cleaning, the maintenance cost is high, the social benefit is low, and the cleanliness of the product surface will also decline, causing damage to the appearance as time goes by , or the raw material cost of some self-cleaning powder coating products is too high, which is not conducive to the realization of industrial application
For example, the current commercialized easy-to-clean powder coating products mainly use the easy-to-clean effect caused by the decomposition of titanium dioxide by ultraviolet radiation. Most of these products are imported products, the price is relatively expensive, and their dependence on sunlight Relatively strong, it can only play a good role under the action of a certain intensity of sunlight, and due to the strong oxidation ability of titanium dioxide, it cannot be used in many organic coatings, which also limits its application

Method used

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  • Hydrophobic easy-to-clean powder coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) The preparation process of organosilane-modified saturated hydroxyl-terminated polyester resin is as follows:

[0029] ① Mixing of raw materials: Add 353g of isophthalic acid, 147g of ethylene glycol, 100g of hydroxy silicone oil and 400g of xylene into the reaction vessel, raise the temperature to 100°C, and wait until the materials are completely dissolved;

[0030] ②Polymerization reaction: After stirring the reaction system and raising the temperature to 180°C, add 0.5g of tetrabutyl titanate dropwise to the reaction vessel under the protection of nitrogen, and keep it warm for 2h of polymerization reaction;

[0031] ③Post-processing: Use atmospheric pressure and vacuum distillation to remove the solvent, pour the material into an aluminum pan while it is hot, cool, and pulverize to obtain the organosilicon-modified saturated hydroxyl-terminated polyester resin of the present invention, and measure the hydroxyl value It is 37mgKOH / g.

[0032] (2) A high-toughne...

Embodiment 2

[0046] (1) The preparation process of organosilane-modified saturated hydroxyl-terminated polyester resin is as follows:

[0047] ① Mixing of raw materials: Add 347g of succinic acid, 243g of 1,2-propanediol, 150g of hydroxy silicone oil and 250g of xylene into the reaction vessel, raise the temperature to 110°C, and wait until the materials are completely dissolved;

[0048] ②Polymerization reaction: Stir the reaction system and raise the temperature to 190°C, then add the catalyst dropwise to the reaction vessel under the protection of nitrogen, and keep warm for 2.5 hours to carry out the polymerization reaction;

[0049] ③Post-processing: use normal pressure and reduced pressure distillation to remove solvent, pour the material into an aluminum pan while it is hot, cool and pulverize to obtain the organosilicon-modified saturated hydroxyl-terminated polyester resin of the present invention, and measure the hydroxyl value It is 52mgKOH / g.

[0050] (2) A self-cleaning powde...

Embodiment 3

[0064] (1) The preparation process of organosilane-modified saturated hydroxyl-terminated polyester resin is as follows:

[0065] ①Raw material mixing: Add 372g of glutaric acid, 328g of neopentyl glycol, 200g of hydroxy silicone oil and 100g of xylene into the reaction vessel, raise the temperature to 120°C, and wait until the materials are completely dissolved;

[0066] ②Polymerization reaction: After stirring the reaction system and raising the temperature to 210°C, add the catalyst dropwise to the reaction vessel under the protection of nitrogen, and keep warm for 3h of polymerization reaction;

[0067]③Post-processing: use normal pressure and reduced pressure distillation to remove solvent, pour the material into an aluminum pan while it is hot, cool and pulverize to obtain the organosilicon-modified saturated hydroxyl-terminated polyester resin of the present invention, and measure the hydroxyl value It is 42mgKOH / g.

[0068] (2) A self-cleaning powder coating comprisin...

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Abstract

The invention discloses a hydrophobic easy-to-clean powder coating which is prepared from the following components in percentage by mass: 48-58% of organic silicon modified saturated end hydroxyl polyester resin, 14-17% of an isocyanate curing agent, 1-1.5% of a smooth degasifier, 1-1.5% of a leveling agent and 22-36% of a pigment filler. The organic silicon modified saturated end hydroxyl polyester resin is adopted as basic resin of the self-cleaned powder coating, and meanwhile a coating formula is optimized, so that the powder coating disclosed by the invention has properties of hydrophobicity, easy cleaning, scrubbing resistance, detergent resistance and the like after being sprayed and cured, and can be widely applied to coating of fields such as outdoor furniture, building materialsand the like.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a hydrophobic and easy-to-clean powder coating. Background technique [0002] With the increasing variety of coating products and the continuous expansion of the application range, the coating industry has become an important independent industrial production part of the chemical industry. And in the coatings industry, powder coatings belong to the fastest growing category. However, along with the increasingly serious air pollution in the world, environmental protection regulations are increasingly strict to pollution control, requiring the development of pollution-free and resource-saving coating varieties. Therefore, solvent-free, protective and decorative powder coatings have developed rapidly because of their economic and social benefits. However, after the powder coating in the prior art is used, it generally needs to invest a lot of manpower for maintenance and cleaning,...

Claims

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Application Information

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IPC IPC(8): C09D175/06C09D5/03
CPCC09D5/03C09D175/06
Inventor 鲍远志翁世兵
Owner 六安科瑞达新型材料有限公司
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