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Water-resistance polyester powder coating

A powder coating and polyester-based technology, applied in the coating field, can solve problems such as cracks and embrittlement, shorten the service life of the coating film, and reduce the mechanical properties of the coating film, so as to improve toughness, prevent adhesion reduction, and low surface tension. Effect

Inactive Publication Date: 2015-11-18
安徽圣德建材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when it is used in an outdoor environment, it is often affected by climatic factors such as rainwater and humidity, resulting in a decrease in the mechanical properties of the coating film, cracks and embrittlement. At the same time, water easily diffuses into the coating film of the polyester powder coating to make the polyester resin Hydrolysis of the ester group, which shortens the service life of the coating film

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022]A kind of water resistance polyester type powder coating that the present invention proposes, its raw material comprises the following components by weight: 65 parts of pure polyester resins, 5 parts of fluorine-containing polyester resins, 10 parts of epoxy resins, 5 parts of silicone resins , 10 parts of carboxy-terminated nitrile rubber, 1 part of N, N, N', N'-tetrakis (2-hydroxyethyl) adipamide, 12 parts of tetramethoxymethyl glycoluril, 1 part of 2-phenylimidazoline 5 parts, 5 parts of 2-methylimidazole, 2 parts of polyethylene, 10 parts of polyvinyl butyral, 10 parts of pigments and fillers, and 10 parts of additives.

Embodiment 2

[0024] A water-resistant polyester powder coating proposed by the present invention, its raw materials include the following components by weight: 50 parts of pure polyester resin, 10 parts of fluorine-containing polyester resin, 3 parts of hydrogenated bisphenol A epoxy resin, organic 15 parts of silicone resin, 3 parts of carboxy-terminated nitrile rubber, 5 parts of N, N, N', N'-tetrakis (2-hydroxyethyl) adipamide, 3 parts of tetramethoxymethyl glycoluril, 2-benzene 5 parts of imidazoline, 1 part of 2-methylimidazole, 5 parts of polyethylene, 3 parts of polyvinyl butyral, 5 parts of micaceous iron oxide, 7 parts of talcum powder, 3 parts of kaolin, 10 parts of nano silver, additives 2 copies;

[0025] Wherein, the pure polyester resin is a combination of carboxyl-terminated polyester resin and hydroxyl-terminated polyester resin in a weight ratio of 2:1; the acid value of the carboxyl-terminated polyester resin is 580 mgKOH / g, the molecular weight is 2800, and the glass Th...

Embodiment 3

[0028] A kind of water-resistant polyester type powder coating that the present invention proposes, its raw material comprises the following components by weight: 60 parts of pure polyester resins, 8.3 parts of fluorine-containing polyester resins, 4 parts of tetraphenol ethane epoxy resins, 4.7 parts of bisphenol S-type epoxy resin, 8.5 parts of silicone resin, 8 parts of carboxyl-terminated nitrile rubber, 3.6 parts of N, N, N', N'-tetrakis (2-hydroxyethyl) adipamide, tetramethyl 10 parts of oxymethyl glycoluril, 4.2 parts of 2-phenylimidazoline, 3.6 parts of 2-methylimidazole, 3.2 parts of polyethylene, 5.6 parts of polyvinyl butyral, 20 parts of pigments and fillers, 7 parts of additives;

[0029] Wherein, the pure polyester resin is a combination of carboxyl-terminated polyester resin and hydroxyl-terminated polyester resin in a weight ratio of 5:1; the acid value of the carboxyl-terminated polyester resin is 550 mgKOH / g, the molecular weight is 3200, and the glass The me...

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Abstract

The invention discloses water-resistance polyester powder coating. The powder coating is prepared from the following raw materials in parts by weight: 50-65 parts of pure polyester resin, 5-10 parts of fluorine-containing polyester resin, 3-10 parts of epoxy resin, 5-15 parts of organic silicon resin, 3-10 parts of carboxyl-terminated nitrile rubber, 1-5 parts of N,N,N',N'-tetrakis(2-hydroxyethyl)adipamide, 3-12 parts of tetrahydro-1,3,4,6-tetrakis(methoxymethyl)imidazo[4,5-d]imidazole-2,5(1H,3H)-dione, 1-5 parts of 2-phenyl-2-imidazoline, 1-5 parts of 2-methylimidazole, 2-5 parts of polyethylene, 3-10 parts of polyvinyl butyral, 10-25 parts of pigment and 2-10 parts of auxiliaries. The water-resistance polyester powder coating has good water resistance and good oil resistance, excellent acid and alkali corrosion resistance, can be used for outdoor coating, and has the advantages of good comprehensive performance and long service life.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a water-resistant polyester powder coating. Background technique [0002] Powder coating is a new type of coating that does not contain solvents and is applied in powder form to form a coating film. Compared with traditional solvent-based coatings, powder coatings emit almost zero organic solvent volatiles (VOC) during curing, avoiding environmental pollution; at the same time, powder coatings have high utilization rate, good coating performance and easy implementation Advantages such as automated coating have achieved rapid development in recent years. [0003] According to the properties of powder coating film-forming substances, powder coatings can be divided into thermoplastic powder coatings and thermosetting powder coatings. Among them, polyester powder coatings are a thermosetting powder coating with excellent performance developed in recent years. It has weather resista...

Claims

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Application Information

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IPC IPC(8): C09D167/00C09D163/00C09D183/04C09D113/00C09D123/06C09D129/14C09D5/03C09D5/16C09D7/12
Inventor 邱华岭
Owner 安徽圣德建材科技有限公司
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