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UV-curable coating and preparation method thereof, super-hydrophilic transparent anti-fog coating and preparation method thereof

A technology of curing coatings and ultraviolet light, applied in coatings, polyester coatings, polyether coatings, etc., can solve problems such as poor anti-fog performance, and achieve good weather resistance, good scratch resistance, and good water resistance.

Active Publication Date: 2017-09-08
福建富兰光学股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current coatings generally have the problem of poor anti-fog performance after being used for a period of time.

Method used

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  • UV-curable coating and preparation method thereof, super-hydrophilic transparent anti-fog coating and preparation method thereof
  • UV-curable coating and preparation method thereof, super-hydrophilic transparent anti-fog coating and preparation method thereof
  • UV-curable coating and preparation method thereof, super-hydrophilic transparent anti-fog coating and preparation method thereof

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preparation example Construction

[0065] In the preparation method of the ultraviolet curing coating of the present invention, the components such as modified silica sol, UV resin oligomer, reactive diluent, surfactant, photoinitiator and solvent are mixed uniformly according to the above weight and number ratio, and filtered That is, the UV-curable coating is obtained.

[0066] Wherein, the preparation method of the silica sol grafted with ethylenic bond and sulfonic acid group comprises the steps:

[0067] S100: preparing silica sol grafted with ethylenic bonds.

[0068] Preferably, as a possible embodiment, the preparation of the silica sol grafted with ethylenic bonds comprises the following steps:

[0069] S110, taking a certain amount of silica sol for activation treatment.

[0070] Since the silica sol is prone to agglomeration when standing still, preferably, before use, the silica sol needs to be activated to disperse the particles in the silica sol uniformly, so as to increase the uniformity of the...

Embodiment 1

[0129] (11) Preparation of modified silica sol

[0130] 1. Activate the silica sol by ultrasonic waves for 30 minutes, wherein the solid content of the silica sol is 5wt%, and the particle size of the silica particles in the silica sol is 5nm;

[0131] 2. Take the partially activated silica sol in step 1, adjust its pH value to 2.5 with acetic acid and stir under a nitrogen atmosphere, and add γ-(methacryloyloxy)propyltrimethoxysilane dropwise while stirring, The dropping time is 30min, wherein, the mass fraction ratio of the added γ-(methacryloyloxy)propyltrimethoxysilane to the solid content of the silica sol taken is 0.5:1; Stirring for 1 h under a nitrogen atmosphere, and then aging for 12 h at room temperature to obtain a silica sol grafted with ethylenic bonds;

[0132] 3. Take the partially activated silica sol in step 1, adjust its pH value to 3 with acetic acid and stir it under a nitrogen atmosphere, add γ-mercaptopropyltriethoxysilane dropwise while stirring, and t...

Embodiment 2

[0143] (21) Preparation of modified silica sol

[0144] 1. Activate the silica sol by ultrasonic waves for 20 minutes, wherein the solid content of the silica sol is 10wt%, and the particle size of the silica particles in the silica sol is 10nm;

[0145] 2. Take the partially activated silica sol in step 1, adjust its pH value to 3 with hydrochloric acid and stir under an argon atmosphere, and add γ-methacryloxypropyltriethoxysilane dropwise while stirring , the dropping time is 40min, wherein, the mass fraction ratio of the added γ-methacryloxypropyltriethoxysilane to the solid content of the silica sol is 0.8:1; Stirring for 3 hours under an argon atmosphere, and then aging for 16 hours at room temperature to obtain a silica sol grafted with ethylenic bonds;

[0146] 3. Take the partially activated silica sol in step 1, adjust its pH value to 4 with hydrochloric acid and stir it under an argon atmosphere, add γ-mercaptopropyltrimethoxysilane dropwise while stirring, and the...

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Abstract

The invention provides a UV-curable coating and its preparation method, and a super-hydrophilic transparent anti-fog coating and its preparation method; the raw materials of the UV-curable coating include 10-50 parts by weight of modified silica sol, 5-30 parts by weight of UV resin oligomer in parts, active diluent in 5-30 parts by weight, surfactant in 0.2-5 parts by weight, photoinitiator in 2-6 parts by weight and solvent in 0-50 parts by weight. The coating prepared by the ultraviolet curing coating of the present invention has long-lasting super-hydrophilic performance and excellent anti-fog performance, and has good water resistance and good weather resistance, and at the same time, its wear resistance, scratch resistance and stain resistance are also very good.

Description

technical field [0001] The invention relates to the field of coatings, in particular to an ultraviolet curing coating, a preparation method thereof, and a superhydrophilic transparent anti-fog coating made of the ultraviolet curing coating. Background technique [0002] The water contact angle on the surface of transparent materials such as glass, plastic, and film is generally above 40°. When there is a temperature difference between the inner and outer surfaces, the saturated vapor pressure of the water on the side with the lower temperature is lower than the vapor pressure of the surrounding environment, and it will accumulate and condense on the surface to form Fog, moisture or steam condenses on the surface of transparent material products to form tiny water droplets. The precipitation of tiny water droplets causes diffuse reflection when light passes through, which obviously reduces the light transmittance of transparent materials, and fogging occurs, thus making transp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/14C09D167/06C09D171/00C09D4/02C09D7/12C09D5/16B05D3/02
Inventor 丁富传潘敏忠青志保许德赵兴兰魏孝典张惠明
Owner 福建富兰光学股份有限公司
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