Organosilicon coating rubber for rail transit, and preparation method thereof

A technology of rail transit and organic silicon, which is applied in the field of silicone rubber coating, anti-mildew silicone coating and its preparation, can solve the problems of silicone coating mildew and other problems, and achieve improved mechanical strength, simple operation, and wide The effect of applying the foreground

Inactive Publication Date: 2019-06-25
CHINA BLUESTAR CHENGRAND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The silicone coating rubber in the present invention is a one-component room-temperature-vulcanized silicone elastomer of deketoxime type, which is used in rail transit and can effectively play the roles of waterproof, dustproof, mildewproof and insulation protection of the outer layer; This not only solves the mildew problem of the existing silicone coating adhesive, but also makes the mildew resistance level up to 0, and does not contain volatile solvents, such as: petroleum ether, solvent gasoline, and toluene, etc., which is safe and environmentally friendly. layer with better strength and toughness

Method used

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  • Organosilicon coating rubber for rail transit, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] 70 parts of 107 silicone rubber with a viscosity of 10000mPa·S, treated with silazane, has a specific surface area of ​​200m 2 Add 15 parts / g of hydrophobic fumed silica and 15 parts of MQ silicone resin into the high-speed mixer, heat up to 160°C and dry for 30 minutes; 3 parts of silane, 3 parts of vinyl tributylketoxime silane and 2 parts of dimethyl dibutylketoxime silane, mixed for 30 minutes under vacuum condition; then add 0.05 part of dibutyltin dilaurate, 1 part of triethoxysilane and 1.5 parts of 2-methyl-4-isothiazolin-3-one (MIT), mixed in vacuum for 40 minutes; finally, packaged and sealed under the protection of inert gas, which can be used in rail transit Anti-mildew silicone coating glue.

[0052] The obtained silicone coating glue is prepared according to GB / T 528-2009, GB / T 529-2008, GB / T 531-2008, GB / T 7124-2008, GB / T 1695-2005, HG / T4301-2012 Test the tensile strength, elongation at break, tear strength, and Shore A hardness of the mechanical, hardn...

Embodiment 2

[0054] 60 parts of 107 silicone rubber with a viscosity of 5000mPa·S and a specific surface area of ​​150m after silazane treatment 2 Add 20 parts / g of hydrophobic fumed silica and 20 parts of MQ silicone resin into the high-speed mixer, heat up to 160°C and dry for 20 minutes; 5 parts of silane, 1 part of vinyl tributylketoxime silane and 5 parts of dimethyl dibutylketoxime silane were mixed under vacuum for 30 minutes; then 0.1 part of dibutyltin dioctoate, N-(β- 1.5 parts of aminoethyl)-γ-aminopropyltrimethoxysilane and 2 parts of 2-n-octyl-4-isothiazolin-3-one (OIT), mixed in vacuum for 30min; finally, under the protection of inert gas The lower package is sealed, and the anti-mildew silicone coating glue for rail transit is obtained.

[0055] The obtained silicone coating glue is prepared according to GB / T 528-2009, GB / T 529-2008, GB / T 531-2008, GB / T 7124-2008, GB / T 1695-2005, HG / T4301-2012 Test the tensile strength, elongation at break, tear strength, and Shore A hardn...

Embodiment 3

[0057] Add 80 parts of 107 silicone rubber with a viscosity of 20000mPa·S, 10 parts of hydrophilic fumed silica and 10 parts of MQ silicone resin into a high-speed mixer, heat up to 160°C and dry for 25 minutes; then move it into a planetary mixer to vacuum and defoam for 60 minutes , then add 6 parts of methyl triacetone oximino silane and 1 part of dimethyl diacetone oximino silane, mix under vacuum condition for 60 min; then add 0.1 part of dibutyltin dilaurate, γ-aminopropyl triethyl 2 parts of oxysilane, 2 parts of γ-(2,3-epoxypropoxy)propyltrimethoxysilane and 0.8 part of 1,2-benzisothiazolin-3-one (BIT), mixed in vacuum for 60 minutes; Finally, it is packaged and sealed under the protection of an inert gas, and the anti-mold silicone coating glue for rail transportation is obtained.

[0058] The obtained silicone coating glue is prepared according to GB / T 528-2009, GB / T 529-2008, GB / T 531-2008, GB / T 7124-2008, GB / T 1695-2005, HG / T4301-2012 Test the tensile strength, el...

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Abstract

The invention discloses an organosilicon coating rubber for rail transit, and a preparation method thereof, and belongs to the technical field of silicone rubber application, wherein the organosiliconcoating rubber comprises: 60-80 parts of hydroxyl-terminated polydimethylsiloxane, 10-20 parts of a reinforcing filler, 10-20 parts of an adhesive film reinforcing agent, 4-8 parts of a cross-linkingagent, 1-5 parts of a chain extender, 0.02-0.5 part of a catalyst, 1-4 parts of a tackifier, and 0.8-3 parts of an antifungal agent, and is prepared through heating drying, vacuum defoaming, vacuum mixing and other steps. According to the present invention, the organosilicon coating rubber is a ketoxime removing type one-component room temperature vulcanized organosilicon elastomer, is used for rail transit, can effectively achieve the effects of water resistance, dust resistance, mildew resistance, insulating protection and the like on the outer layer, can solve the mildew problem of the existing organosilicon coating rubber, can achieve the mildew-resistant grade of 0 grade, does not contain volatile solvents such as petroleum ether, solvent gasoline, toluene and the like, and is safe and environmentally friendly, and the cured rubber layer has good strength and good toughness.

Description

technical field [0001] The invention relates to a silicone rubber coating glue, in particular to a mildew-resistant silicone coating glue for rail transit and a preparation method thereof, belonging to the technical field of silicone rubber application. Background technique [0002] Traditional coating glue is mainly used on the outer surface of electronic products such as electronic components, electrical modules, circuit boards, etc., to play the role of moisture-proof, dust-proof, anti-corona, insulation and so on. Among them, organic silica gel has developed into one of the main types of coating adhesives due to its good resistance to high and low temperature, ultraviolet rays and oxygen aging, as well as its stable chemical properties and electrical insulation properties. In recent years, with the development of silicone coating technology, its application fields have gradually expanded, and the outer layer protection of rail transit is one of them. In rail transit, du...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/04C08K13/06C08K9/06C08K3/36C08K5/5465C08K5/544C08K5/47B29B7/00
Inventor 王强谢志坚暴玉强毛云忠陈世容刘彬
Owner CHINA BLUESTAR CHENGRAND CO LTD
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