UV-curable coating composition for coated color steel plate

A technology for curing coatings and color steel plates, which is applied in the direction of polyester coatings, epoxy resin coatings, polyurea/polyurethane coatings, etc., which can solve the problems of film surface dullness, performance that cannot fully meet the needs, fine cracks, etc., and achieve good flexibility , Excellent adhesion fastness, outstanding effect of adhesion fastness

Inactive Publication Date: 2016-02-03
SHANGHAI WEIKAI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the performance of domestic coatings for the production of coated color steel plates cannot fully meet the needs, mainly due to the poor adhesion fastness between the coating and the organic film, which is easy to peel off, and dense fine particles will appear after the coating film is bonded to the steel plate and subjected to thermal shock. Cracks, after the coated steel plate is boiled by high-temperature water steam, the coating temperature is lower than 200 ℃, which leads to various problems such as the surface of the film, thus relying heavily on imported paint with high prices, which makes the cost of coated color steel plate high and reduces its cost. Market competitiveness has also greatly hindered the development of coated color steel plates in China

Method used

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  • UV-curable coating composition for coated color steel plate
  • UV-curable coating composition for coated color steel plate
  • UV-curable coating composition for coated color steel plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The ultraviolet curable coating composition for the film-coated color steel plate of this embodiment includes the components shown in Table 1 by weight percentage.

[0035] Roll coating the coating composition on the PET film, the coating dry weight is 3~5g / m 2 In between, 65℃ infrared leveling for 1 to 2 minutes, the leveling effect is better, after 500mj / cm 2 After curing with high energy, the adhesion fastness between the coating and the PET film is good (100 / 100), the temperature resistance is about 240 ℃, there is no crack after cold and heat shock, the resistance to organic solvents is rubbed 100 times without change, and the surface is resistant to steam for 1 hour. Change, excellent overall performance.

Embodiment 2

[0037] The ultraviolet curable coating composition for the film-coated color steel plate of this embodiment includes the components shown in Table 1 by weight percentage.

[0038] Roll the paint onto the PET film with a dry weight of 3~5g / m 2 In between, 65℃ infrared leveling for 1 to 2 minutes, the leveling effect is better, after 500mj / cm 2 After curing with high energy, the adhesion fastness between the coating and the PET film is good (100 / 100), the temperature resistance is about 235℃, there is no crack in the cold and heat shock, the resistance to organic solvents is rubbed 100 times without change, and the surface is resistant to water and steam for 1 hour. , Excellent overall performance.

Embodiment 3

[0040] The ultraviolet curable coating composition for the film-coated color steel plate of this embodiment includes the components shown in Table 1 by weight percentage.

[0041] Roll the paint onto the PET film with a dry weight of 3~5g / m 2 In between, 65℃ infrared leveling for 1 to 2 minutes, the leveling effect is better, after 500mj / cm 2 After curing with high energy, the adhesion fastness between the coating and the PET film is good (100 / 100), the temperature resistance is about 250 ℃, there is no crack in the cold and heat shock, the resistance to organic solvents is rubbed 100 times without change, and the surface is not changed after boiling for 1 hour. , Excellent overall performance.

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Abstract

The invention discloses an ultraviolet curing coating composition for a tectorial color steel plate. The ultraviolet curing coating composition for the tectorial color steel plate comprises the following components in percentage by weight: 5 to 20 percent of high-functional-group polyester acrylate, 15 to 32 percent of urethane acrylate, 5 to 16 percent of epoxy acrylate, 1 to 5 percent of single-functional-group acrylate monomer, 10 to 25 percent of high-functional-group acrylate monomer, 2 to 5 percent of acrylic acid esterified acrylate, 2 to 6 percent of photoinitiator, 0.1 to 1.5 percent of flatting agent, 0.01 to 0.05 percent of polymerization inhibitor, and 40 to 58 percent of solvent. Compared with the prior art, the product provided by the invention has prominent adhesion fastness with a polyester film, is quick in coating curing and compact in film formation, and has flexibility and high surface hardness; after the coating film is adhered to the steel plate and subjected to cold and hot impact, crack is avoided; and after the film coated steel plate is steamed by high-temperature water vapor, color change and dim of the surface are avoided.

Description

Technical field [0001] The invention relates to the field of ultraviolet curing coatings, in particular to an ultraviolet curing coating composition for film-coated color steel plates. Background technique [0002] Color-coated steel sheet is referred to as color-coated steel sheet and color steel sheet. It uses high-quality cold-rolled steel, hot-dip galvanized steel or galvanized steel as the substrate, and after surface degreasing, phosphating, and chromate treatment, the coating (roller coating) ) Or an organic film (such as a PET film) with a UV-curable coating, which is baked and cured. It not only has the properties of high mechanical strength and easy forming of steel materials, but also has good decoration and corrosion resistance of coating materials. It has the characteristics of light weight, high strength, bright colors and good durability. It is widely used in construction and household Electrical appliances, interior decoration, electromechanical and transportatio...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): C09D175/14C09D167/06C09D163/00C09D7/12
Inventor虞明东袁慧雅王锐涛韩莲缪慧牛辉楠
OwnerSHANGHAI WEIKAI CHEM