A kind of ultraviolet curing cathodic electrophoretic coating for multi-material metal collinear coating and preparation method thereof

A cathodic electrophoretic coating and electrophoretic coating technology, applied in electrophoretic coatings, anti-corrosion coatings, coatings, etc., can solve the stickiness and uneven thickness of the paint film, the inability to meet the performance index requirements of the paint film at the same time, and the unbalanced appearance and quality of the film thickness And other issues

Active Publication Date: 2021-09-14
WUHAN RES INST OF MATERIALS PROTECTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a kind of multi-material metal collinear coating and its preparation method of UV-curable cathodic electrophoretic coating, to solve the problem of common cathodic electrophoretic coating on multi-metal materials such as cold-rolled sheet, galvanized sheet and aluminum alloy sheet. During line coating, there are problems of unbalanced paint film adhesion, film thickness and appearance quality on the surface of various materials, which cannot meet the requirements of paint film performance indicators at the same time, and the problems of sticky and uneven thickness of conventional UV-curable paint films, which meet the requirements of light Quantifying the need for high-quality paint protection for multi-material car bodies

Method used

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  • A kind of ultraviolet curing cathodic electrophoretic coating for multi-material metal collinear coating and preparation method thereof
  • A kind of ultraviolet curing cathodic electrophoretic coating for multi-material metal collinear coating and preparation method thereof
  • A kind of ultraviolet curing cathodic electrophoretic coating for multi-material metal collinear coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Raw material composition:

[0035]

[0036] Preparation:

[0037] (1) Take each raw material according to the above formula ratio, and set aside;

[0038] (2) Mix photocurable polyacrylic resin, photoinitiator, pigment and filler, film-forming aid, water-based wetting and dispersing agent, defoamer, antioxidant, deionized water and stir evenly, and disperse to Particle fineness≤35um;

[0039] (3) Add the remaining deionized water to the mixture obtained in step (2), stir evenly, and mature for 24 hours to obtain an ultraviolet-curable cathodic electrophoretic coating.

[0040] (4) The throwing power of the prepared cathodic electrophoretic paint was measured by the Ford method, and the throwing power was about 24.

[0041] (5) Under the collinear coating conditions of electrophoresis voltage of 180V, electrophoresis temperature of 29°C, and electrophoresis time of 4 minutes, the paint film of the prepared cold-rolled steel plate is flat, the film thickness is 18-2...

Embodiment 2

[0061] One, a kind of ultraviolet curing cathodic electrophoretic paint, is made up of the raw material of following mass meter:

[0062]

[0063]

[0064] Two, a preparation method of UV curing cathodic electrophoretic coating:

[0065] (1) Take each raw material according to the above formula ratio, and set aside;

[0066] (2) Mix and mix photocurable polyacrylic resin, photoinitiator, pigment and filler, film-forming aid, water-based wetting and dispersing agent, defoamer, deionized water, and disperse with a sand mill until the particle size is ≤ 35um;

[0067] (3) Add the remaining deionized water to the mixture obtained in step (2), stir evenly, and mature for 24 hours to obtain an ultraviolet-curable cathodic electrophoretic coating.

[0068] (4) The throwing power of the prepared cathodic electrophoretic paint was measured by the Ford method, and the throwing power was about 25.

[0069] (5) Under the conditions of electrophoretic voltage of 180V and electroph...

Embodiment 3

[0071] One, a kind of ultraviolet curing cathodic electrophoretic paint, is made up of the raw material of following mass meter:

[0072]

[0073] Two, a preparation method of UV curing cathodic electrophoretic coating:

[0074] (1) Take each raw material according to the above formula ratio, and set aside;

[0075] (2) Mix and mix photocurable polyacrylic resin, photoinitiator, pigment and filler, film-forming aid, water-based wetting and dispersing agent, defoamer, deionized water, and disperse with a sand mill until the particle size is ≤ 35um;

[0076] (3) Add the remaining deionized water to the mixture obtained in step (2), stir evenly, and mature for 24 hours to obtain an ultraviolet-curable cathodic electrophoretic coating.

[0077] (4) The throwing power of the prepared cathodic electrophoretic paint was measured by the Ford method, and the throwing power was about 25.

[0078] (5) Under the conditions of electrophoretic voltage of 180V and electrophoretic tempe...

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Abstract

The invention relates to an ultraviolet-curable cathodic electrophoretic coating for multi-material metal collinear coating and a preparation method thereof. Film resin, to solve the problem of unbalanced paint film adhesion, film thickness and appearance quality on the surface of common cathodic electrophoretic coatings when cold-rolled sheets, galvanized sheets, aluminum alloy sheets and other multi-metal body bodies are collinearly coated, which cannot meet the requirements of the paint at the same time. The problem of film performance index requirements, as well as the problem of stickiness and uneven thickness of conventional UV-curable paint film, meet the needs of lightweight multi-material car body high-quality coating protection.

Description

technical field [0001] The invention relates to an ultraviolet-cured cathodic electrophoretic coating for multi-material metal collinear coating and a preparation method thereof, belonging to the field of industrial anticorrosion coatings, and specifically relates to a preparation method of a UV-curable cathodic electrophoretic coating with good basic mechanical properties and excellent medium resistance . Background technique [0002] Electrophoretic coating is an environmentally friendly water-based coating. Since the 1960s, there have been anodic electrophoretic coatings and cathodic electrophoretic coatings. Anodic electrophoretic coatings are easy to corrode anode materials and the electrolyte is unstable. Cathodic electrophoretic coatings not only solve the problem of anode corrosion, but also have the characteristics of high penetration rate, high safety, and high efficiency. Therefore, cathodic electrophoretic coatings have developed rapidly in recent years. It has ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/16C09D5/44C09D5/08C09D7/63
CPCC09D5/08C09D5/4411C09D5/448C09D133/16C08K5/524
Inventor 汪洋张哲刘兰轩高立新周甘华朱浩
Owner WUHAN RES INST OF MATERIALS PROTECTION
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