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High-toughness epoxy powder coating

An epoxy powder, high toughness technology, applied in the direction of powder coatings, epoxy resin coatings, polyamide coatings, etc., can solve the problems of reduced coating adhesion, affecting the use effect, and inability to protect the medium, achieving excellent thick coating toughness, Improvement of glass transition temperature and enhancement of structural rigidity

Inactive Publication Date: 2019-04-19
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

[0003] The surface coating of pipelines and electronic components needs to be thickly coated, otherwise the adhesion of the coating on the surface of the medium will be reduced, resulting in easy peeling of the coating film when soaked in water for a long time, and the medium cannot be protected. Poor toughness, affecting its use effect

Method used

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  • High-toughness epoxy powder coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A high-toughness epoxy powder coating made of the following components by mass percentage:

[0018]

[0019] Bisphenol A solid epoxy resin: Anhui Meijia New Material Co., Ltd. E-12;

[0020] Hyperbranched polyamide resin: Wuhan Hyperbranched Resin Technology Co., Ltd. HPN202;

[0021] Smooth degasser: SA500 from Lu'an Jietongda New Material Co., Ltd.;

[0022] Leveling agent: PV88 from German Dexinli Chemical;

[0023] Precipitated barium sulfate: W-44HB product of Guizhou Huajia Fine Mining Co., Ltd.;

[0024] Titanium dioxide: ZR940+ from Jiangsu Zhentai Chemical Co., Ltd.

[0025] Put the raw materials into the mixing tank according to the above ratio, pre-mix for 5 minutes*3 times, and then extrude and tablet on the extruder. The extrusion temperature is 100°C in the first zone and 110°C in the second zone. The material is broken and finely crushed, and the coarse powder is passed through a rotary sieve to obtain a fine powder of 20-50 microns, which is the h...

Embodiment 2

[0029] A high-toughness epoxy powder coating made of the following components by mass percentage:

[0030]

[0031] Bisphenol A solid epoxy resin: Anhui Meijia New Material Co., Ltd. E-12;

[0032] Hyperbranched polyamide resin: Wuhan Hyperbranched Resin Technology Co., Ltd. HPN202;

[0033] Smooth degasser: SA500 from Lu'an Jietongda New Material Co., Ltd.;

[0034] Leveling agent: PV88 from German Dexinli Chemical;

[0035] Precipitated barium sulfate: W-44HB product of Guizhou Huajia Fine Mining Co., Ltd.;

[0036] Titanium dioxide: ZR940+ from Jiangsu Zhentai Chemical Co., Ltd.

[0037] Put the raw materials into the mixing tank according to the above ratio, pre-mix for 5 minutes*3 times, and then extrude and tablet on the extruder. The extrusion temperature is 100°C in the first zone and 110°C in the second zone. The material is broken and finely crushed, and the coarse powder is passed through a rotary sieve to obtain a fine powder of 20-50 microns, which is the h...

Embodiment 3

[0041] A high-toughness epoxy powder coating made of the following components by mass percentage:

[0042]

[0043] Bisphenol A solid epoxy resin: Anhui Meijia New Material Co., Ltd. E-12;

[0044] Hyperbranched polyamide resin: Wuhan Hyperbranched Resin Technology Co., Ltd. HPN202;

[0045] Smooth degasser: SA500 from Lu'an Jietongda New Material Co., Ltd.;

[0046] Leveling agent: PV88 from German Dexinli Chemical;

[0047] Precipitated barium sulfate: W-44HB product of Guizhou Huajia Fine Mining Co., Ltd.;

[0048] Titanium dioxide: ZR940+ from Jiangsu Zhentai Chemical Co., Ltd.

[0049] Put the raw materials into the mixing tank according to the above ratio, pre-mix for 5 minutes*3 times, and then extrude and tablet on the extruder. The extrusion temperature is 100°C in the first zone and 110°C in the second zone. The material is broken and finely crushed, and the coarse powder is passed through a rotary sieve to obtain a fine powder of 20-50 microns, which is the h...

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Abstract

The invention discloses a high-toughness epoxy powder coating, which is prepared from the following components (by weight): 50-80% of bisphenol A type solid epoxy resin; 2-3.5% of dicyandiamide; 2-5%of hyperbranched polyamide resin; 1-1.5% of a smoothing degasifier; 1-1.5% of a leveling agent; and 8.5-44% of pigments and fillers. By adding the hyperbranched polyamide resin in the coating, resin can be greatly dissolved by hyperbranched ability of the polyester resin, and ring-opening and solidification with the bisphenol A type epoxy resin can be rapidly achieved, and the prepared coating hasa hyperbranched chain. Then, the coating can be mixed with organic matter and greatly attached to the surface of a medium, and the prepared coating has high toughness and thermal stability, and the coating further has excellent thick coating toughness and impact resistance. The film is smooth and flat, and can be used for workpieces which require thick coating such as pipes and electronic components.

Description

technical field [0001] The invention belongs to the field of paint preparation and relates to a high-toughness epoxy powder paint. Background technique [0002] Epoxy resin powder coatings are widely used in home appliances, vehicles, hardware, pipelines and other fields due to their good anti-corrosion properties, strong adhesion, high temperature resistance and excellent electrical insulation properties. They are one of the most important types of coatings in powder coatings. , Epoxy powder coatings generally consist of epoxy resins, curing agents, pigments, fillers and additives. [0003] The surface coating of pipelines and electronic components needs to be thickly coated, otherwise the adhesion of the coating on the surface of the medium will be reduced, resulting in easy peeling of the coating film when soaked in water for a long time, and the medium cannot be protected. Poor toughness affects its use effect. Contents of the invention [0004] The object of the pre...

Claims

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Application Information

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IPC IPC(8): C09D163/02C09D177/00C09D5/03C09D7/65C08G59/46
CPCC08G59/4021C08G59/46C08L2201/08C08L2205/035C09D5/03C09D7/65C09D163/00C08L77/00C08L91/06C08L33/04
Inventor 郜兵鲍远志翁世兵
Owner 六安科瑞达新型材料有限公司
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