Super-hard organic silicone hydrophobic glass resin and preparation method thereof

A technology of hydrophobic glass and silicone, which is applied in the direction of coating, etc., can solve the problems of inability to obtain a wide range of popularization and application, and the high price of polysilazane, and achieve no cracking and pulverization, high light transmittance, and film formation uniform effect

Inactive Publication Date: 2018-03-23
HUNAN QIWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And because polysilazane is expensive, these methods can't obtain wide application

Method used

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  • Super-hard organic silicone hydrophobic glass resin and preparation method thereof
  • Super-hard organic silicone hydrophobic glass resin and preparation method thereof
  • Super-hard organic silicone hydrophobic glass resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A kind of superhard organosilicon hydrophobic glass resin of the present invention, preparation method is as follows:

[0021] a) Synthesis of active silicone resin: 50 parts of liquid hydrogen-containing polymethylhydrogen siloxane (active hydrogen content 1.0%), 10 parts of vinyl MQ silicone resin (vinyl content 2.2%), 5-10 parts Parts polyhydroxypolysiloxane (viscosity 30mm 2 / s), 2 parts of amino-terminated silicone oil (viscosity 100mm 2 / s), 300 parts of xylene were added to the reactor, stirred evenly and heated to 50°C, then 0.5 parts of chloroplatinic acid solution with a platinum concentration of 1500ppm, 06 parts of KH560 were added, and the reaction continued at 50°C for 5 hours; b) polysilicon Azane-modified copolymerization: add 1 part of chloroplatinic acid solution with a platinum concentration of 1500 ppm, 10 parts of hydrogen-containing polymethylhydrogen siloxane to the reactor and heat to 80 ° C, slowly drop into the reactor through the feeding port...

Embodiment 2

[0026] A kind of superhard organosilicon hydrophobic glass resin of the present invention, preparation method is as follows:

[0027] a) Synthesis of active silicone resin: 50 parts of liquid hydrogen-containing polymethylhydrogen siloxane (active hydrogen content 1.5%), 10 parts of vinyl MQ silicone resin (vinyl content 1.5%), 8 parts more Hydroxypolysiloxane (viscosity 100mm 2 / s), 5 parts of amino silicone oil (viscosity 100mm 2 / s), 200 parts of petroleum ether (90~120°C) were added to the reactor, stirred evenly and heated to 60°C, then 1.5 parts of platinum complex solution with a platinum concentration of 1500ppm, 0.9 parts of KH550 were added, and the reaction was continued at 60°C for 3 Hours; b) polysilazane modified copolymerization: add 0.5 parts of platinum complex solution with platinum concentration of 1500ppm to the reactor, 10 parts of hydrogen-containing polymethylhydrogen siloxane and heat to 75 ° C, through the feeding port to Slowly add 10 parts of alkyl...

Embodiment 3

[0029] A kind of superhard organosilicon hydrophobic glass resin of the present invention, preparation method is as follows:

[0030] a) Synthesis of active silicone resin: 50 parts of liquid hydrogen-containing polymethylhydrogen siloxane (active hydrogen content 0.8%), 7 parts of vinyl MQ silicone resin (vinyl content 2.5%), 8 parts Hydroxypolysiloxane (viscosity 100mm 2 / s), 4 parts of amino silicone oil (viscosity 200mm 2 / s), 250 parts of diluent were added into the reactor, stirred evenly and heated to 50°C, then 1.5 parts of platinum complex solution with a platinum concentration of 1500ppm, 1 part of methyltriethoxysilane coupling agent were added, at 55°C Continue to react for 3 hours; b) polysilazane modified copolymerization: add 0.8 parts of platinum complex solution with platinum concentration of 1500ppm to the reactor, 10 parts of hydrogen-containing polymethylhydrogen siloxane and heat to 65 ° C, pass Slowly add 15 parts of polysilazane dropwise from the feed ...

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Abstract

The invention relates to a superhard organic silicon hydrophobic glass resin and a preparation method thereof. Under the catalysis of Karsted catalyst, hydrogen-containing polymethyl hydrogen siloxane, vinyl MQ silicone resin, polyhydroxy polysiloxane, amino silicone oil The active silicon-hydrogen bond and carbon-carbon double bond cross-link, and the active silicon-hydrogen bond cross-links with hydroxyl or amino group to form a three-dimensional network silicone resin, and then polysilazane passes through active-Si-H and organic silicon resin in the presence of a catalyst. The hydroxyl group, amino group or carbon-carbon double bond in the silicone resin is grafted on the molecular chain of the silicone resin. The invention can be self-catalyzed and solidified at room temperature, and the film is formed uniformly without cracking and pulverization; the coating film has good water resistance and stain resistance, and the contact angle with water can reach 130° after being painted on the surface of ceramic tiles to form a film ; Good transparency, light transmittance as high as 80%; high hardness of the coating film, the pencil hardness is above 7H, and can withstand high temperature of 300 ℃.

Description

technical field [0001] The invention relates to a silicone resin, in particular to a superhard silicone hydrophobic glass resin and a preparation method thereof, belonging to the technical field of silicone modification. technical background [0002] Hydrophobic coatings are widely used in anti-graffiti of buildings, anti-fouling of marine ships, easy cleaning of high-speed trains, and protection of automobile paint surfaces. The transparent high-hardness hydrophobic coating does not affect the original appearance and optical characteristics of the substrate, and can also provide good physical protection for the substrate, and has a wider application field. The characteristic of hydrophobicity requires that the materials selected in the coating preparation process must have the characteristics of low surface energy, while the transparency requires that the materials have high transmittance in the visible light range. At present, the main hydrophobic transparent coating mate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G81/00C09D187/00
CPCC08G81/00C09D187/00
Inventor 李丽娟
Owner HUNAN QIWEI TECH CO LTD
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