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Flame-retardant silicone rubber and preparation method thereof

A technology of silicone rubber and anilinomethyltriethoxysilane, which is applied in the field of building materials, can solve the problems of unsuitable fire protection requirements and poor flame retardant performance, and achieve good elasticity, excellent flame retardant performance and convenient use Effect

Active Publication Date: 2013-01-09
HAILONG EMERSON ZHENJIANG ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing silicone rubber has poor flame retardancy and is not suitable for fields with high fire protection requirements.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] First, pretreat 10 parts by weight of polyether diol at -0.005MPa and 65°C for 30 minutes, then add 10 parts by weight of toluene diisocyanate for chemical reaction for 100 minutes after degassing; then add 20 parts by weight of aniline methyl base triethoxysilane, and continue to react for 60 minutes; then add 50 parts by weight of magnesium hydroxide, fully disperse and extract through dehydration to obtain the fire-resistant silicone rubber.

Embodiment 2

[0024] First, pretreat 20 parts by weight of polyether diol at -0.1Mpa, 45°C for 40 minutes, and then add 5 parts by weight of diphenylmethane diisocyanate for chemical reaction for 120 minutes after degassing; then add 30 parts by weight of Diaminoethylaminopropyltrimethoxysilane, continue to react for 120 minutes; then add 60 parts by weight of ammonium polyphosphate, fully disperse, dehydrate and extract to obtain the fire-resistant silicone rubber.

Embodiment 3

[0026] First, 30 parts by weight of polyether diol was pretreated at 0.05Mpa and 105°C for 50 minutes, and after degassing, 15 parts by weight of hexamethylene-1,6-diisocyanate was added for chemical reaction for 180 minutes; 40 parts by weight of γ-aminopropyltrimethoxysilane was continued to react for 110 minutes; then 30 parts by weight of aluminum hydroxide was added, fully dispersed and extracted by dehydration to obtain the fire-resistant silicone rubber.

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Abstract

The invention discloses flame-retardant silicone rubber, which consists of polyether diols, isocyanate, an aminosilane crosslinking agent and a flame retardant in a certain ratio. A preparation method for the flame-retardant silicone rubber comprises the following steps of: performing heat treatment on the polyether diols in vacuum for 30 to 60 minutes, exhausting, adding the isocyanate, performing chemical reaction for 60 to 180 minutes; adding the aminosilane crosslinking agent, and continuously reacting for 30 to 60 minutes; and adding the flame retardant, fully dispersing, and dehydratingand extracting. The flame-retardant silicone rubber can be cured at room temperature without being heated, has the advantages of convenience for use, no smell or toxicity, oxidation ageing resistance, light ageing resistance, high temperature and severe cold resistance and the like, has good elasticity, strength, electric insulativity and excellent flame retardancy, and can be widely applied to the fields with high flame-retardant requirements, such as construction joint stopping, cable hole sealing, oil and gas pipeline plugging, telecommunication base stations, steel industry and the like.

Description

technical field [0001] The invention relates to a silicone rubber and a preparation method thereof, in particular to a fireproof silicone rubber and a preparation method thereof, belonging to the technical field of building materials. Background technique [0002] Among the many synthetic rubbers, silicone rubber is one of the best. It is odorless, non-toxic, not afraid of high temperature and resistant to severe cold. It still retains its original strength and elasticity. Silicone rubber also has good electrical insulation, oxygen resistance and aging resistance, light resistance and aging resistance, mildew resistance, chemical stability, etc., and can be widely used in building gap sealing, cable hole sealing, oil and gas pipeline sealing, Telecommunications base stations, steel industry and other fields. However, the existing silicone rubber has poor flame retardancy and is not suitable for fields with high fire protection requirements. Contents of the invention [...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/08C08G18/66C08G18/48C08G18/38C08K3/32C08K3/22C08K3/38
Inventor 戴金华徐斌刘祥涛
Owner HAILONG EMERSON ZHENJIANG ENERGY TECH
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