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Ultraviolet-cured weather-proof self-cleaning coating composition

A self-cleaning, ultraviolet light technology, used in polyester coatings, epoxy resin coatings, polyurea/polyurethane coatings, etc. Diversified coating process, fast curing rate and excellent weather resistance

Inactive Publication Date: 2017-03-15
SHANGHAI WEIKAI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method has poor timeliness, and it takes a certain amount of time for the water droplets to gather or remove, which affects imaging and visibility, and its durability is not ideal, so it cannot be used as a durable product for a long time, so it cannot guarantee the true self-cleaning effect

Method used

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  • Ultraviolet-cured weather-proof self-cleaning coating composition
  • Ultraviolet-cured weather-proof self-cleaning coating composition
  • Ultraviolet-cured weather-proof self-cleaning coating composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The present embodiment 1 relates to a kind of UV curable coating composition with weather resistance and self-cleaning effect, comprises each component of the parts by weight shown in Table 1; Get each component by weight parts, after each component Mix evenly, dilute the coating prepared above with an organic solvent (a mixed solution of ethyl acetate, butyl acetate, and n-butanol with a mass ratio of 1:2:3) at a mass ratio of 1:2.5, and place it on a PC board Spraying, baking at 45°C for 4 minutes, and then UV curing, the curing energy is 500mJ / cm 2 .

[0046] Table 1

[0047]

[0048] The conventional paint performance, weather resistance performance index and self-cleaning performance of the obtained coating were tested, and the results are shown in Table 4.

Embodiment 2

[0050] This embodiment relates to a UV-curable coating composition with weather resistance and self-cleaning effect, including the components in parts by weight shown in Table 1; Mix, dilute the coating prepared above with an organic solvent (a mixed solution of ethyl acetate, butyl acetate, and n-butanol at a mass ratio of 1:2:3) at a mass ratio of 1:2.5, and carry out the process on a PC board. Spray coating, bake at 45°C for 4 minutes, then UV light curing, the curing energy is 500mJ / cm 2 .

[0051] Table 2

[0052]

[0053] The conventional paint performance, weather resistance performance index and self-cleaning performance of the obtained coating were tested, and the results are shown in Table 4.

Embodiment 3

[0055] This embodiment relates to a UV-curable coating composition with weather resistance and self-cleaning effect, including the components in parts by weight shown in Table 1; Mix, dilute the coating prepared above with an organic solvent (a mixed solution of ethyl acetate, butyl acetate, and n-butanol at a mass ratio of 1:2:3) at a mass ratio of 1:2.5, and carry out the process on a PC board. Spray coating, bake at 45°C for 4 minutes, then UV light curing, the curing energy is 500mJ / cm 2 .

[0056] table 3

[0057]

[0058]

[0059] Performance testing:

[0060] The coatings prepared in Experimental Examples 1 to 3 were tested for performance, and the adhesion, pencil hardness, light transmittance, artificial accelerated aging test, initial water contact angle and sustained water contact angle performance of the coating were measured.

[0061] The specific performance testing items and corresponding methods are as follows:

[0062] 1. Adhesion

[0063] 3M 610 ad...

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Abstract

The invention provides an ultraviolet-cured weather-proof self-cleaning coating composition. The coating composition comprises, by weight, 20-30 parts of high-functionality oligomer, 30-50 parts of hydrophilic oligomer, 10-20 parts of acrylic monomer, 4-6 parts of photoinitiator, 3-5 parts of polymerizable surfactant, 0.02-1 part of auxiliary, 0.5-1 part of ultraviolet absorber and 0.2-1 part of light stabilizer. After ultraviolet curing, the prepared coating is high in curing rate, free of high temperature baking and environmentally friendly and saves energy. The coating obtained after curing is good in adhesive force, high in hardness, good in wear resistance and excellent in weather fastness and has a self-cleaning effect.

Description

technical field [0001] The invention relates to the technical field of radiation-cured coatings, in particular to an ultraviolet-cured weather-resistant self-cleaning coating composition for PMMA, PC, PET and other substrates. Background technique [0002] Ultraviolet curing coating (UV coating) is a new type of coating popular in Europe, America, Japan and other places at the end of the 20th century. Because the cured coating has excellent scratch resistance, high hardness, and good fullness, and because of its It has the advantages of high efficiency, energy saving, environmental protection and economy, and is widely used in construction, sporting goods, electronic communications, packaging materials and auto parts. [0003] Due to the environment in which outdoor products are used, they are often exposed to wind, sun, and rain, so they need to have certain weather resistance. At present, there are three kinds of coatings commonly used for outdoor decorative panels: one i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/14C09D167/06C09D163/10C09D4/02C09D4/06
CPCC09D175/14C09D4/06C09D163/10C09D167/06
Inventor 虞明东周福建蒋天龙
Owner SHANGHAI WEIKAI CHEM
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