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A kind of high water permeability powder coating and preparation method thereof

A powder coating and wax powder technology, which is applied in powder coatings, polyester coatings, anti-corrosion coatings, etc., can solve the application limitations, water-based inorganic anti-seepage coatings have insufficient water seepage resistance to meet the needs of consumers, and no specific proposals are proposed Solutions and other problems to achieve the effect of improving compactness, improving hydrolytic stability, and improving water vapor resistance

Active Publication Date: 2021-08-03
广东华江粉末科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the water seepage resistance of the water-based inorganic anti-seepage coating prepared by this method is not enough to meet the needs of consumers, and its application in the industry is still limited.
[0006] In summary, in the field of water-resistant powder coating preparation, there are still many practical problems that need to be dealt with in practical applications, and no specific solutions have been proposed.

Method used

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  • A kind of high water permeability powder coating and preparation method thereof
  • A kind of high water permeability powder coating and preparation method thereof
  • A kind of high water permeability powder coating and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A high water-penetration-resistant powder coating, the powder coating is prepared from the raw materials in the following weight percentages:

[0032]

[0033] The sum of the weight percentages of the above raw materials is 100%.

[0034] The high water-penetration-resistant powder coating of this embodiment uses polyester resin and water-penetration-resistant modified materials as the main structure, and various additives cooperate to significantly improve the water-penetration resistance of the coating. By changing the ratio of polyester resin to water-resistant modified material and the amount of zinc phosphomolybdate and carbodiimide, the water-resistant performance of the coating can be changed, so that the coating film can achieve better performance.

[0035] Wherein, the acid value of the polyester resin is 32-38 mgKOH / g. Compared with ordinary polyester resin, the coating film has better water seepage resistance and weather resistance;

[0036] The zinc pho...

Embodiment 2

[0046] Accurately weigh the material according to the formula shown in Table 1, place it in a high-speed mixing tank and mix for 3 minutes; extrude the material with an extruder at a temperature of 100°C after mixing; then press into tablets, cool, and crush with an ACM mill The powder machine is crushed to powder particles with an average particle size of 30-35 μm; sieved through a 180-mesh sieve, and packaged into a finished product.

[0047] Table 1 High water permeability powder coating formula

[0048] polyester resin 55.0％ Triglycidyl isocyanurate 4.2％ Zinc phosphomolybdate 10.0％ water-resistant filler 6.7％ leveling agent 1.0％ brightener 0.5％ wax powder 1.0％ Benzoin 0.3％ Carbodiimide 1.0％ antioxidant 0.3％ pigment 20.0％ total 100％

Embodiment 3

[0050] Accurately weigh the material according to the formula shown in Table 2, place it in a high-speed mixing tank and mix for 3 minutes; extrude the material with an extruder at a temperature of 100°C after mixing; then press into tablets, cool, and crush with an ACM mill The powder machine is crushed to powder particles with an average particle size of 30-35 μm; sieved through a 180-mesh sieve, and packaged into a finished product.

[0051] Table 2 High water permeability powder coating formula

[0052]

[0053]

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Abstract

The invention provides a high water-penetration-resistant powder coating and a preparation method thereof. The powder coating is prepared from the following raw materials in weight percentage: 55.0%-70.0% polyester resin, 4.2%-5.3 triglycidyl isocyanurate %, zinc phosphomolybdate 5%-10%, water-resistant modified material 5%-30%, leveling agent 0.5%-1.0%, brightener 0%-0.5%, wax powder 0.2%-1.0%, benzoin 0.2% %‑0.5%, carbodiimide 0.5%‑1.5%, antioxidant 0.2%‑0.5%, pigment 0.0%‑25.0%. The powder coating prepared by the invention greatly improves the water seepage resistance of the coating on the basis of having various properties of the coating film of the powder coating, and has a very good market prospect.

Description

technical field [0001] The invention belongs to the technical field of powder coating preparation, and in particular relates to a high water-penetration-resistant powder coating and a preparation method thereof. Background technique [0002] Powder coating has the advantages of no VOC, environmental protection, energy saving, high construction efficiency and wide application range. With its advantages of economy, environmental protection, high efficiency and excellent performance, it is gradually replacing organic solvent-based coatings and has become an important development direction in the coatings industry. , has maintained a rapid growth rate. Because most of the powder coatings are used for outdoor coating and decoration, they are often exposed to the sun and rain. In some closed environments with high temperature and high humidity, water vapor will penetrate into the coating film and cause water spots, which will affect its performance and appearance. The German cert...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D167/00C09D5/03C09D5/08C09D7/61C09D7/62C09D7/63
CPCC08L2201/08C09D5/033C09D5/08C09D167/00C08L27/18C08K13/06C08K5/34924C08K7/00C08K9/06C08K3/34C08K3/30C08K3/32C08K5/29
Inventor 魏育福蔡劲树刘飞许统广
Owner 广东华江粉末科技有限公司
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