Powder coating and preparation method thereof

A powder coating and fiber technology, applied in powder coatings, polyester coatings, coatings, etc., can solve problems such as poor compatibility and shortened service life of coatings, and achieve high uniformity, extended service life, and good activation effect Effect

Active Publication Date: 2022-05-10
余姚市亚宇工贸有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Regarding the above-mentioned related technologies, the inventor believes that although the modified polyester fibers obtained after electrospinning are made into powder coatings in the related technologies, since polyester is a hydrophobic material and polydopamine is a hydrophilic material, therefore Poor compatibility between the cured product of polyester melt and the cured product of polydopamine viscose
When the coating formed by powder coating is under the condition of freeze-thaw cycle, the cured product of polyester melt and the cured product of polydopamine viscose are easy to separate, resulting in a shortened service life of the coating

Method used

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  • Powder coating and preparation method thereof
  • Powder coating and preparation method thereof
  • Powder coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0047] In this preparation example, the adsorbent is prepared according to the following method:

[0048] (1) 40kg natural zeolite powder, 40kg glycerol, 160kg lithium hydroxide solution are mixed uniformly to obtain mixed solution 1; in this step, the pH of mixed solution 1 is 10;

[0049] (2) Add 8kg of hydroxymethyltriethoxysilane and 8kg of vinyltriethoxysilane to the mixed solution 1, stir evenly and heat to 60°C to obtain the mixed solution 2;

[0050] (3) Remove the liquid component in the mixed liquid 2, grind the remaining solid component, and then screen the powder with a particle size between 350-550 μm to obtain the adsorbent.

[0051] As shown in Table 1, the difference between Preparation Examples 1-5 is that the ratio of raw materials is different.

[0052] Table 1

[0053]

[0054]

preparation example 6

[0056] The difference between this preparation example and preparation example 3 is that the pH of the mixed solution 1 is 8.

preparation example 7

[0058] The difference between this preparation example and preparation example 3 is that the pH of the mixed solution 1 is 12.

[0059] Preparation example of nanocellulose whiskers

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Abstract

The invention relates to the technical field of powder coatings, and particularly discloses a powder coating and a preparation method thereof. The powder coating is obtained by jointly extruding modified polyester fibers, a curing agent, filler and color master batch, crushing and sieving, the modified polyester fibers are obtained by sequentially shearing and electrospinning a spinning solution, and the spinning solution comprises the following components in parts by weight: 30-50 parts of a polyester melt and 30-50 parts of a polydopamine glue solution. 4-8 parts of a cross-linking agent, 0.2-0.4 part of an initiator, 2-4 parts of a toughening agent and 4-6 parts of an adsorbent. The powder coating prepared from the modified polyester fiber is high in uniformity, the cured product of the viscose and the cured product of the polyester melt are not easy to separate, and the service life of the coating prepared from the powder coating can be prolonged.

Description

technical field [0001] The present application relates to the technical field of powder coatings, more specifically, it relates to a powder coating and a preparation method thereof. Background technique [0002] Powder coating is a new type of coating. Compared with traditional coatings, the biggest difference between powder coatings is that powder coatings exist in the form of solid powder rather than liquid, so powder coatings are not only convenient for storage and transportation, but also not easy to generate sewage. It is beneficial to reduce the pollution caused by the paint industry to the environment. In actual use, when the coating formed by powder coating is outdoors, the coating will be affected by unfavorable factors such as temperature difference between day and night, dry-wet cycle, freeze-thaw cycle, etc. Therefore, higher requirements are proposed for powder coatings used in outdoor environments. demand. [0003] The Chinese patent with the notification num...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/00C09D179/04C09D5/03D01F8/14D01F8/16D01F1/10
CPCC09D167/00C09D179/04C09D5/031D01F8/14D01F8/16D01F1/10C08L79/04C08L67/00
Inventor 周永良
Owner 余姚市亚宇工贸有限公司
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