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Preparation method for super-hydrophilic organic silicon coating

A silicone coating and super-hydrophilic technology, applied in coatings and other directions, can solve problems such as single function, inability to combine high hardness and super-hydrophilicity

Active Publication Date: 2014-06-25
宁波科乐新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide the field with a super-hydrophilic silicone coating with high hardness that should be applied to the surface of glass or transparent plastics, so that it can solve the problem that the existing similar coatings have single functions and cannot have both functions. Technical issues of high hardness and superhydrophilicity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1: 28.5g polyethylene glycol methacrylate, 1.5g allyloxynonylphenoxypropanol polyoxyethylene ether ammonium sulfate, 0.3g silane coupling agent KH570 and 0.3g initiator peroxidation Benzoyl was dissolved in 60 g of ethylene glycol butyl ether, stirred and reacted at 80° C. for 8 hours to obtain a superhydrophilic polymer solution. After cooling, 10 g of silicone resin was added, and stirring was continued for 5 hours at room temperature to prepare a superhydrophilic silicone coating.

[0017] The super-hydrophilic silicone coating was dip-coated on the surface of plexiglass, and baked at 120° C. for 30 minutes to obtain a sample. The surface hardness of the sample is 2H, no mist is seen when placed 5cm above the hot water at 90 degrees Celsius for 30 seconds, and no dust remains after the dusty sample is rinsed with distilled water for 20 seconds and dried naturally for 1 hour.

Embodiment 2

[0018] Example 2: 30g of silicone resin, 3g of N,N-dimethylacrylamide, 2g of N-vinylpyrrolidone, 1g of allyloxy nonylphenoxypropanol polyoxyethylene ether, 4g of allyloxy Nonylphenoxypropanol polyoxyethylene ether ammonium sulfate, 1g silane coupling agent KH570 and 0.2g initiator azobisisobutyronitrile were dissolved in a mixed solvent composed of 40g propylene glycol methyl ether and 20g n-butanol, and stirred at 70°C After reacting for 12 hours, a superhydrophilic silicone coating was prepared.

[0019] The superhydrophilic silicone coating was dip-coated on the surface of polycarbonate, and baked at 120° C. for 40 minutes to obtain a sample. The surface hardness of the sample is 2H, no mist is found when placed 5cm above the hot water at 90 degrees Celsius for 30 seconds, and no dust remains after the dusty sample is rinsed with distilled water for 20 seconds and dried naturally for 1 hour.

Embodiment 3

[0020] Example 3: The water-soluble vinyl monomer in Example 1 was adjusted to 4g polyethylene glycol methacrylate, 2g hydroxyethyl methacrylate, and 2g hydroxypropyl methacrylate. Vinyl-containing surfactants were adjusted to 0.5 g of allyloxy nonylphenoxy propanol polyoxyethylene ether and 1.5 g of allyloxy nonylphenoxy propanol polyoxyethylene ether ammonium sulfate. The silane coupling agent KH570 is adjusted to 0.1g, and the silicone resin is adjusted to 10g. Other raw materials and processes are the same as in Example 1, and a super-hydrophilic silicone coating is prepared.

[0021] The super-hydrophilic silicone coating was sprayed on the glass surface, and baked at 120° C. for 50 minutes to obtain a sample. The surface hardness of the sample is 4H, no mist is seen when placed 5cm above the hot water at 90 degrees Celsius for 30 seconds, and no dust remains after the dusty sample is rinsed with distilled water for 20 seconds and dried naturally for 1 hour.

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Abstract

The invention relates to a preparation method for a super-hydrophilic organic silicon coating, which is designed aiming at solving the technical problems that the similar coating has a single function and is incapable of having both high hardness and super-hydrophilicity. The key design point of the preparation method comprises the step of chemically grafting super-hydrophilic polymer molecules on organic silicon resin molecules, thus obtaining the super-hydrophilic organic silicon coating. By chemically grafting super-hydrophilic polymer molecules on organic silicon resin molecules through a silane coupling agent KH570, the organic silicon coating with both high hardness and super-hydrophilicity can be prepared. The coating is applied to the surface of glass or transparent plastic, so that the surface of the glass or transparent plastic has the functions of being wear-resistant, anti-fog, self-cleaning and the like.

Description

technical field [0001] The invention relates to coating preparation, in particular to a preparation method of a high-hardness super-hydrophilic silicone coating. Background technique [0002] It is very important for glass and transparent plastics to maintain a high degree of transparency under the influence of the external environment, but this is usually difficult to achieve, especially in the case of high ambient humidity, due to surface fogging leading to material transparency Seriously down. At the same time, glass and transparent plastics are often used in outdoor environments in many fields, such as the construction field, so the surface is easily contaminated and reduces its transparency. Moreover, the pollutants adsorbed on these surfaces are difficult to be washed away by rainwater. And during normal use, the surface of the transparent plastic is prone to scratches due to being scratched. These scratches not only affect the appearance but also reduce the transpar...

Claims

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Application Information

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IPC IPC(8): C09D151/08C09D183/04C08F283/06C08F230/08C08F283/12
Inventor 王占雷王岳明王冠杰
Owner 宁波科乐新材料有限公司
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