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Activation energy radial curing paint for silicon rubber

A technology of active energy rays and curing coatings, which is applied in the direction of coatings, etc., can solve the problems of long curing time, general chemical resistance, poor chemical resistance and wear resistance, etc.

Active Publication Date: 2009-05-13
东莞市贝特利新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Silicone coatings have good adhesion to silicone rubber, but their chemical resistance and wear resistance are poor; polyurethane coatings can obtain good adhesion through flame or corona treatment of silicone rubber, good wear resistance, and chemical resistance. The performance of the product is average, the biggest shortcoming is that its curing time is long, generally more than 45 minutes
[0005] Usually active energy ray curing coatings are mainly cured by ultraviolet rays, but at present this kind of coatings are mainly used for some rigid materials such as plastics, metals, glass, etc., and the application on silicone rubber materials has not been reported, the main reason is that silicone rubber is an inert material. Very strong material, it is difficult to obtain good adhesion on the surface of conventional paint

Method used

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  • Activation energy radial curing paint for silicon rubber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] Add isophorone diisocyanate dropwise to the mixture of dibutyltin dilaurate, polyester diol with a molecular weight of 400 and 3-aminopropyltrihydroxymethylsilane, under the protection of nitrogen, at 50℃~80℃ Stir and react for 4 hours to prepare a transparent polyurethane prepolymer containing siloxane segments, then add hydroxyethyl methacrylate dropwise and keep it warm at 50°C to 80°C for 2 hours to obtain a viscosity of 3000mPa. s / 30℃ modified resin.

[0070] Synthesize 5 parts of gained modified resins, 10 parts of pentaerythritol triacrylate monostearate, 40 parts of difunctional urethane acrylate oligomers, 0.5 parts of 1-hydroxycyclohexyl benzophenone (photoinitiator), 3 parts of 2,4,6-trimethylbenzoyl diphenylphosphorus oxide (photoinitiator), 0.5 parts of leveling agent (BYK-333) are mixed and dispersed in an equal weight mixed solvent of toluene and cyclohexanone, The viscosity was adjusted so that it could be coated with a 4# cup (25° C.) for 13 seconds to...

Embodiment 2

[0072] Except using an equivalent amount of 3-isocyanatotriethoxysilane instead of 3-aminopropyltrimethylsilane in Example 1, the same operation as in Example 1 was carried out to obtain an ultraviolet curable coating composition (I -2).

Embodiment 3

[0074] Add toluene diisocyanate dropwise to the mixture of dibutyltin dilaurate, polyether diol with a molecular weight of 1000 and 3-aminopropyltrihydroxymethylsilane, and stir the reaction at 50℃~80℃ under the protection of nitrogen After 6 hours, a transparent polyurethane prepolymer containing a silane segment was obtained, and then by adding hydroxyethyl acrylate dropwise, and keeping it warm at 50°C to 80°C for 3 hours, a modified polymer with a viscosity of 35000mPa.s / 30°C was obtained. resin.

[0075] Synthesize 5 parts of gained modified resins, 10 parts of pentaerythritol triacrylate monostearate, 40 parts of difunctional urethane acrylate oligomers, 0.5 parts of 1-hydroxycyclohexyl benzophenone (photoinitiator), 3 parts of 2,4,6-trimethylbenzoyl diphenylphosphorus oxide (photoinitiator), 0.5 parts of leveling agent (BYK-333) are mixed and dispersed in an equal weight mixed solvent of toluene and cyclohexanone, The viscosity was adjusted so that it could be coated w...

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Abstract

The invention belongs to the technical field of coating and in particular relates to an activation energy radial curing coating. The coating is formed through mixing main body resin, modified resin, a light evocating agent and an additive; the coating comprises the following compositions in weight percentage: 20 to 90 percent of polymerized unsaturated compound, 5 to 20 percent of the modified resin, 0.1 to 5 percent of the light evocating agent and 0 to 5 percent of the additive, wherein the modified resin in the coating formula is used in an activation energy radial curing coating compound to form a coating film which has excellent adhesive force on a silastic substrate subjected to corona treatment, flame treatment and other surface treatment; and the activation energy radial curing coating compound has activation energy radial curing, can shorten the procedure of film coating and curing, reduces heat energy, and has high efficiency and low energy consumption.

Description

Technical field: [0001] The invention belongs to the technical field of coatings, in particular to an active energy ray curing coating for silicone rubber. Background technique: [0002] Active energy ray curing coatings appeared in the 1950s and 1960s. They have the advantages of fast curing speed, high production efficiency, good mechanical properties, low pollution, and energy saving. They are known as environmentally friendly and green coatings. In the past 30 years, active energy ray-cured coatings have maintained rapid development, and their application fields have expanded from early wood coatings to all aspects of our life and production: paper, plastic, metal and so on. [0003] As we all know, silicone rubber has the advantages of good elasticity, good weather resistance, and is not easy to age. It is a good material for making mobile phones and remote control buttons. Fonts, patterns, etc. can be obtained through printing and coating to make them functional produc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D4/02C08J7/04C08L83/04
Inventor 王全官灏
Owner 东莞市贝特利新材料有限公司
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