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Preparation method of low-gloss extinction electrophoretic paint

A low-gloss, photoelectric technology, applied in the field of coatings, can solve the problems of uneven paint film, low gloss, poor stability, etc., and achieve the effect of good paint film flatness, strong anti-pollution ability and good stability

Active Publication Date: 2018-09-07
江阴恒兴涂料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing electrophoretic coating, after adding matting agent, its gloss can reach low gloss (60 degree gloss meter measured less than or equal to 10 degrees), but its stability is poor, 3-5 months of storage will appear delamination phenomenon, and After use, the paint film is uneven and not delicate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Embodiment 1. A low-gloss matting electrophoretic coating, the mass ratio of acrylic resin and amino resin in the main material is 1:0.5; wherein:

[0037] Acrylic resin is prepared from the following raw materials in mass fractions: 3 parts of isooctyl methacrylate, 8 parts of n-butyl acrylate, 7 parts of methyl methacrylate, 2 parts of styrene, 0.5 parts of acrylic acid, 2- 2 parts of hydroxyethyl ester, 3 parts of 2-hydroxyethyl acrylate, 3 parts of 2-hydroxypropyl acrylate, 6 parts of polycarbonate (the number average molecular weight is 70,000), 0.1 part of dinonylnaphthalenesulfonic acid, composite initiator 0.1 part (azobisisobutylcyanide and DCP (dicumyl peroxide) at a ratio of 1:3), 1 part of triethanolamine neutralizer, 0.01 part of defoamer, 10 parts of n-butanol, isopropanol 10 parts and 30 parts deionized water. Its preparation method is as follows:

[0038] Step 1. Configure the mixed solution

[0039] Isooctyl methacrylate, n-butyl acrylate, methyl met...

Embodiment 2

[0051] Embodiment 2, a kind of low-gloss matting electrophoretic coating, described acrylic resin is prepared by the raw material of following mass fraction: 4 parts of isooctyl methacrylate, 8 parts of n-butyl acrylate, 6 parts of methyl methacrylate, 3 parts of styrene, 1 part of acrylic acid, 1.5 parts of 2-hydroxyethyl methacrylate, 3.5 parts of 2-hydroxyethyl acrylate, 3.5 parts of 2-hydroxypropyl acrylate, 5 parts of polycarbonate (the number average molecular weight is 60,000 ), 0.15 parts of dinonyl naphthalene sulfonic acid, 0.08 parts of composite initiator (azobisisobutylcyanide and DCP (dicumyl peroxide) according to 1:3), 1.2 parts of triethanolamine neutralizer, disinfectant 0.01 parts of foaming agent, 10 parts of n-butanol, 10 parts of isopropanol and 30 parts of deionized water.

[0052] All the other are the same with embodiment 1.

Embodiment 3

[0053] Embodiment 3, a kind of low-gloss matting electrophoretic coating, described acrylic resin is prepared by the raw material of following mass fraction: 3.5 parts of isooctyl methacrylate, 9 parts of n-butyl acrylate, 8 parts of methyl methacrylate, 2 parts of styrene, 0.8 parts of acrylic acid, 1 part of 2-hydroxyethyl methacrylate, 4 parts of 2-hydroxyethyl acrylate, 3 parts of 2-hydroxypropyl acrylate, 4 parts of polycarbonate (the number average molecular weight is 80,000 ), 0.05 parts of dinonyl naphthalene sulfonic acid, 0.1 parts of composite initiator (azobisisobutylcyanide and DCP (dicumyl peroxide) according to 1:2), 1.5 parts of methyldiethanolamine neutralizer , 0.02 parts of defoamer, 15 parts of n-butanol, 15 parts of isopropanol and 40 parts of deionized water.

[0054] All the other are the same with embodiment 1.

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Abstract

The invention relates to a preparation method of low-gloss extinction electrophoretic paint. The low-gloss extinction electrophoretic paint is prepared from acrylic resin and amino resin, wherein theacrylic resin is prepared from the following raw materials in parts by mass: 3-4 parts of isooctyl methacrylate, 6-9 parts of n-butyl acrylate, 5-8 parts of methyl methacrylate, 1-3 parts of styrene,0.5-1 part of acrylic acid, 1-2 parts of 2-hydroxyethyl methacrylate, 3-4 parts of 2-hydroxyethyl acrylate, 3-4 parts of 2-hydroxypropyl acrylate, 2-6 parts of polycarbonate, 0.05-0.3 part of dinonylnaphthalenesulfonic acid, 0.08-0.2 part of composite initiator, 1-2 parts of neutralizer, 0.01-0.02 part of defoamer, 8-15 parts of n-butanol, 8-15 parts of isopropyl alcohol and 10-50 parts of deionized water. The finally prepared electrophoretic paint is good in extinction effect (being less than 10 degrees when being detected by using a 60-degree glossmeter), can be stored for one year or longer, and is free from stratification phenomenon and good in stability; furthermore, a paint film is good in flatness and high in anti-pollution capacity.

Description

technical field [0001] The invention relates to a preparation method of a low-gloss matting electrophoretic coating, which belongs to the technical field of coatings. Background technique [0002] Electrophoresis is one of the most effective methods of coating metal workpieces. Electrophoretic coating is a new type of coating with low pollution, energy saving, resource saving and good corrosion resistance. It has the advantages of smooth coating film, good water resistance and chemical resistance, and it is easy to realize the mechanization and automation of the coating industry. It is suitable for the coating of workpieces with complex shapes, edges, corners, and holes. It is widely used in the coating of hardware such as automobiles, automatic vehicles, electromechanical appliances, and home appliances. [0003] In order to obtain a matting effect, one way is to add matting agents, such as silicon oxide, organic microparticles, etc., to the coating. However, the chemical...

Claims

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Application Information

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IPC IPC(8): C09D133/08C09D161/32C09D7/65C09D7/63C09D7/62C09D5/44C08F220/18C08F220/14C08F220/20C08F220/06C08F212/08
CPCC08F220/18C08F220/1804C08K2201/011C08L2205/03C09D5/4411C09D7/62C09D7/63C09D7/65C09D133/14C08L61/32C08L69/00C08K9/08C08K3/22C08K5/42C08F212/08C08F220/20C08F220/06C08F220/1808C08F220/14
Inventor 葛丽珠林乾隆
Owner 江阴恒兴涂料有限公司
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