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Ultraviolet light curing coating and production thereof

A technology of curing coatings and ultraviolet light, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems of easy wear, insufficient adhesion, and the wear resistance and hardness of coatings cannot meet the requirements, so as to improve adhesion, Good wear resistance, wear resistance and hardness improvement effect

Inactive Publication Date: 2006-05-31
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although the above-mentioned coatings can be used as topcoats for wood, leather and metal, etc., when they are applied to plastic accessories, especially portable plastic accessories, since portable plastic accessories are often moved, they are prone to wear and tear, and the paint is wear-resistant. Performance and hardness can not meet the requirements
Furthermore, the above coatings do not adhere well to plastic parts due to the vastly different properties of plastic parts from wood, leather and metal surfaces

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0027] According to the preparation method of the coating provided by the present invention, the mixing of the film-forming substance, diluent and photoinitiator can be carried out simultaneously or step by step. Preferably, the photoinitiator is first mixed with the diluent to fully dissolve the diluent, and then Then mix with the film-forming substance.

[0028] In order to make the film-forming substance evenly dispersed, the temperature of mixing can be increased, but because the diluent used in the present invention is a volatile organic solvent, its dissolving power is also better, therefore, the temperature of mixing should be lower than 50°C. Preferably it is from 30 to below 50°C.

[0029] If the coating also contains coupling agent, dispersant and / or auxiliary agent, the method provided by the invention also includes adding The step of uniformly mixing the coupling agent, dispersant and / or auxiliary agent. The coupling agent, dispersant and auxiliary agent can be a...

Embodiment 1-3

[0036] The following examples illustrate the coatings provided by the invention and methods for their preparation.

[0037] (1) mix the photoinitiator with the organic solvent, and stir until fully dissolved; (2) add hexafunctional urethane acrylate to the mixture obtained in step (1), heat up to 40°C, and stir evenly; (3) in step ( 2) Add coupling agent, anti-wear agent, lubricant, leveling agent, defoamer and dispersant to the obtained mixture, and stir until uniform; (4) cool down to room temperature, filter the obtained slurry to remove the residue therein, The coatings T1-T3 provided by the present invention are obtained.

[0038] Table 1 shows the amount of each substance used. Table 2 gives the composition of T1-T3.

Embodiment 4-6

[0048] The following examples illustrate the properties of the coatings provided by the present invention.

[0049] The coatings T1-T3 obtained in Examples 1-3 were sprayed on the plastic casing, dried at 50° C. for 15 minutes, and irradiated with ultraviolet light for 25 seconds to obtain a cured film layer with a thickness of 12 microns. The performance of the cured film layer was tested, and the results are shown in Table 3.

[0050] Wherein, the wear resistance measurement uses the 7-IBB type RCA abrasion meter produced by U.S. Norman Instrument and Equipment Company, under the effect of 175 grams of force, grinds the sprayed paint film, and when the paint film is exposed to the substrate, the number of times the rubber wheel rotates.

[0051] For the determination of adhesion, draw 100 square grids of 1 mm × 1 mm on the sprayed surface with a scratcher, and glue them on the square grids with a model 600 transparent tape produced by 3M Company of the United States, leaving...

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Abstract

A ultraviolet curing coating and its production are disclosed. The coating consists of filming substance, diluent and light initiating agent or assistants. The diluent is a organic solvent which comprises one of several from toluene, acetic ether, acetate butyrin, isobutyl acetate, propyl acetate, alcohol, n-butyl alcohol, ethylene ketone, dimethyl benzene, methyl isobutyl ketone, acetone, methyl ethyl ketone, ethanediol butyl ester and propylene butyl ester. It costs low, has better abrasive-resistance, hardness and adhesion.

Description

technical field [0001] The present invention relates to a photocurable coating and a preparation method thereof, more specifically to an ultraviolet photocurable coating and a preparation method thereof. Background technique [0002] UV-curable coating is a kind of photo-curable coating developed in recent years. Compared with traditional photo-curable coating, UV-curable coating has a higher solid content, so the production efficiency is high. At the same time, its drying time is also shorter. [0003] Existing UV-curable coatings contain film-forming substances, diluents and photoinitiators, and sometimes also contain additives such as leveling agents, defoamers, lubricants, and wear-resistant agents. Wherein, the diluent is an acrylate monomer with a functionality of 1-5 or more or a mixture of an acrylate monomer with a functionality of 1-5 or more and an organic solvent. The film-forming substance is selected from at least one of polyester acrylate, polyurethane acryl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/14
Inventor 谭伟华董俊卿刘赵生
Owner BYD CO LTD
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