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Ultrahard organosilicone hydrophobic glass resin and preparation method thereof

A technology of hydrophobic glass and silicone, which is applied in antifouling/underwater coatings, coatings, paints containing biocide, etc., can solve the problems of expensive polysilazane and achieve high density, high hydrophobicity, Uniform coating effect

Inactive Publication Date: 2018-02-23
UNION FOSHAN CHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Due to the high price of polysilazane, the above method has not been widely applied

Method used

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  • Ultrahard organosilicone hydrophobic glass resin and preparation method thereof
  • Ultrahard organosilicone hydrophobic glass resin and preparation method thereof
  • Ultrahard organosilicone hydrophobic glass resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] First, 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 of polyhydroxy polysiloxane (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, then added 0.5 parts of chloroplatinic acid solution with a platinum concentration of 1500 ppm, 0.6 parts of KH560, heated to 80 ° C for 5 hours, cooled to room temperature and added 10 parts of complete Hydrogen polysilazane was stirred and reacted for 5 hours to obtain the superhard silicone hydrophobic glass resin.

Embodiment 2

[0024] First, 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 of polyhydroxypolysiloxane (viscosity 100mm 2 / s), 5 parts of amino silicone oil (viscosity 100mm 2 / s), 200 parts of petroleum ether (distillation range 90-120°C) were added to the reactor, stirred evenly, then 1.5 parts of platinum complex solution with a platinum concentration of 1500ppm, 0.9 parts of KH550 were added, heated to 60°C for 3 hours, After cooling to room temperature, 6 parts of perhydropolysilazane were added, and the reaction was continued to stir for 4 hours to obtain the superhard silicone hydrophobic glass resin.

Embodiment 3

[0026] First, 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 of polyhydroxypolysiloxane (viscosity 100mm2 / s), 4 parts of amino silicone oil (viscosity 200mm2 / s), 250 parts of solvent (xylene / cyclohexane=6 / 4) are added to the reactor, stirred evenly, and then 1.5 parts of platinum complexes with a platinum concentration of 1500ppm are added Solution, 1 part of methyltriethoxysilane coupling agent, heated to 90 ° C for 3 hours, cooled to room temperature, added 10 parts of perhydropolysilazane, and continued to stir for 3 hours to obtain the superhard silicone hydrophobic glass resin.

[0027] The organosilicon hydrophobic glass resin in the present embodiment is spray-coated on the glass surface (coating amount is 10g / m 2 ), test the coating performance after standing at room temperature for 24h.

[0028] Coating film performance technical index in the embodim...

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Abstract

The invention relates to ultrahard organosilicone hydrophobic glass resin which is prepared by mixing hydrogen-containing polymethylhydrosiloxane, vinyl MQ silicon resin, polyhydroxy polysiloxane, amino silicon oil and a diluent for reaction with a silane coupling agent and polyvinylsilazane under the action of a Karsted catalyst. The invention further provides a preparation method of the ultrahard organosilicone jydrophobic glass resin. The ultrahard organosilicone jydrophobic glass resin prepared according to the preparation method disclosed by the invention can realize autocatalysis for crosslinking solidification at room temperature, and a coating film is uniform, transparent and not cracked; furthermore, the ultrahard organosilicone hydrophobic glass resin is high in compactness, hydrophobicity and stain resistance; a contact angle between the coating film and water is greater than 120 degrees, and the visible light transmittance is higher than 85 percent, and the ultrahard organosilicone hydrophobic glass resin can resist a temperature being 500 DEG C or higher.

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 resins. 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 materials ...

Claims

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Application Information

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IPC IPC(8): C08G77/452C09D183/10C09D5/16
Inventor 谢义鹏许钧强康伦国姚东生
Owner UNION FOSHAN CHEM
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