Low viscosity flame-retardant room temperature vulcanized foam silicone rubber and preparation method thereof

A room temperature vulcanization, low-viscosity technology, applied in plastic/resin/wax insulators, organic insulators, electrical components, etc., can solve the problems of flame retardancy and other problems that have not been mentioned, and achieve convenient construction, excellent high temperature and low temperature resistance, and easy flow effect

Active Publication Date: 2017-04-26
CHENGDU GUIBAO NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it is a non-foamed material,...

Method used

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  • Low viscosity flame-retardant room temperature vulcanized foam silicone rubber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] A component:

[0062] α,ω-Dihydroxypolydimethylsiloxane, viscosity 700mPa·s, 100 parts;

[0063] The modified aluminum hydroxide superfine powder that stearic acid carries out surface treatment, particle diameter 1500 orders, 50 parts;

[0064] Quartz sand, particle size 800 mesh, 20 parts;

[0065] Methylphenyl silicone oil (10% molar content of phenyl), viscosity 100mPa·s, 10 parts;

[0066] Vinyl-terminated silicone oil, viscosity 300mPa·s, 25 parts;

[0067] Pt catalyst: Karstedt method platinum-vinyl siloxane 3000ppm, 0.5 parts;

[0068] Expanded graphite, 4 parts;

[0069] B component:

[0070] α,ω-Dihydroxypolydimethylsiloxane, viscosity 1500mPa·s, 100 parts;

[0071] Hydroxyl-terminated silicone oil, viscosity 60mPa·s, 10 parts;

[0072] Stearic acid is carried out the superfine powder of modified aluminum hydroxide after surface treatment, particle diameter 1500 orders, 50 parts;

[0073] Methylphenyl silicone oil (10% molar content of phenyl), viscosit...

Embodiment 2

[0085] A component:

[0086] α,ω-Dihydroxypolydimethylsiloxane, viscosity 700mPa·s, 100 parts;

[0087] Stearic acid is carried out the superfine powder of modified aluminum hydroxide after surface treatment, particle diameter 1500 orders, 50 parts;

[0088] Calcium carbonate, particle size 1500 mesh, 20 parts;

[0089] Methylphenyl silicone oil, the molar content of phenyl is 10%, the viscosity is 150mPa·s, 10 parts;

[0090] Vinyl-terminated silicone oil, viscosity 300mPa·s, 25 parts;

[0091] Pt catalyst: Karstedt method platinum-vinyl siloxane 3000ppm, 0.6 parts;

[0092] Expanded graphite, 6 parts;

[0093] B component:

[0094] α,ω-Dihydroxypolydimethylsiloxane, viscosity 700mPa·s, 100 parts;

[0095] Hydroxyl-terminated silicone oil, viscosity 60mPa·s, 5 parts;

[0096] Methylphenyl silicone oil, the molar content of phenyl is 10%, the viscosity is 150mPa·s, 5 parts;

[0097] Stearic acid is carried out the superfine powder of modified aluminum hydroxide after s...

Embodiment 3

[0109] A component:

[0110] α,ω-Dihydroxypolydimethylsiloxane, viscosity 1500mPa·s, 100 parts;

[0111] Sodium stearate carries out the modified magnesium hydroxide superfine powder after surface treatment, particle diameter 1200 orders, 50 parts;

[0112] Zinc oxide, particle size 2000 mesh, 15 parts;

[0113] Methylphenyl silicone oil, the molar content of phenyl is 15%, the viscosity is 60mPa·s, 15 parts;

[0114] Vinyl-terminated silicone oil, viscosity 500mPa·s, 25 parts;

[0115] Pt catalyst: Karstedt method platinum-vinyl siloxane 2800ppm, 0.5 parts;

[0116] Zinc borate, 10 parts;

[0117] B component:

[0118] α,ω-Dihydroxypolydimethylsiloxane, viscosity 1500mPa·s, 100 parts;

[0119] Hydroxyl-terminated silicone oil, viscosity 60mPa·s, 5 parts;

[0120] Methylphenyl silicone oil, the molar content of phenyl is 15%, the viscosity is 60mPa·s, 10 parts;

[0121] Sodium stearate carries out the modified magnesium hydroxide superfine powder after surface treatmen...

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Abstract

The invention discloses low viscosity flame-retardant room temperature vulcanized foam silicone rubber and a preparation method thereof. The silicone rubber comprises a component A and a component B in a mass ratio of 1: 1. The component A comprises 100 parts of alpha, omega- dihydroxy polydimethylsiloxane, 40-60 parts of a flame retardant A, 10-30 parts of a reinforcing and incrementing filler, 10-30 parts of methyl phenyl silicone oil, 15-30 parts of vinyl end silicone oil, 0.4-0.8 part of a Pt catalyst and 5-10 parts of a flame retardant B; the component B comprises 100 parts of alpha, omega- dihydroxy polydimethylsiloxane, 5-10 parts of end hydroxyl silicone oil, 40-80 parts of a flame retardant A, 15-35 parts of a reinforcing and incrementing filler, 10-20 parts of methyl phenyl silicone oil, 15-30 parts of vinyl silicone oil, 10-20 parts of hydrogen-containing silicone oil and 5-10 parts of a flame retardant B. The foam silicone rubber disclosed by the invention is low in viscosity and easy to flow and is easily cured at constant temperature, and is applied to pouring construction conveniently.

Description

technical field [0001] The invention relates to a room temperature vulcanized foamed silicone rubber, in particular to a low-viscosity flame-retardant room temperature vulcanized foamed silicone rubber and a preparation method thereof. Background technique [0002] Silicone polymer is a linear siloxane polymer composed of Si-O-Si repeating units. Silicone materials are widely used in various industries because of their excellent high and low temperature resistance, excellent electrical insulation, no toxic gas after combustion, and good physiological inertia. Foam silicone rubber combines the properties of silicone polymers and foam materials. While possessing the properties of silicone polymers, it also has low density, high elasticity, good damping and high-frequency shock absorption of foam materials. And other physical properties, expanding the application of silicone materials. [0003] Silicone polymer is a linear siloxane polymer composed of Si-O-Si repeating units....

Claims

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Application Information

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IPC IPC(8): C08L83/06C08L83/04C08L83/07C08L83/05C08K13/06C08K7/24C08K3/34C08K3/26C08K3/22C08J9/30H01B3/46
CPCC08J9/30C08J2383/06C08J2483/04C08J2483/07C08K2201/003C08L83/06C08L2201/02C08L2201/08C08L2203/14C08L2205/02C08L2205/025C08L2205/035C08L2312/08H01B3/46H01B3/465C08L83/04C08K13/06C08K7/24C08K3/34C08K2003/265C08K2003/2296C08K2003/2224C08K2003/2227
Inventor 闫宁王天强周静邹百军王有治
Owner CHENGDU GUIBAO NEW MATERIAL
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