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Flame-retardant silicone rubber and continuous production technology and system thereof

A production process, silicone rubber technology, applied in the field of silicone rubber, can solve the problem of reducing the tensile strength of silicone rubber products, elongation at break, tear strength and other mechanical strength and processing formability, which cannot meet the performance requirements of silicone rubber, It is prone to problems such as dripping, so as to improve the processing formability and stability, improve plasticity, and prevent smoking

Active Publication Date: 2019-04-26
东莞市朗晟材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Due to its good aging resistance and stability, silicone rubber has a wide range of applications, and is widely used in products such as silicone tubes and power coating materials. However, the current silicone rubber materials have low flame retardancy. It is prone to dripping during the burning process, which reduces the mechanical strength and processability of silicone rubber products such as tensile strength, elongation at break, tear strength, etc., and cannot meet the current market requirements for silicone rubber properties. certain restrictions

Method used

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  • Flame-retardant silicone rubber and continuous production technology and system thereof
  • Flame-retardant silicone rubber and continuous production technology and system thereof
  • Flame-retardant silicone rubber and continuous production technology and system thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A flame-retardant silicone rubber, comprising the following raw materials in parts by weight:

[0047]

[0048] The composite silicone rubber is a mixture of methyl vinyl silicone rubber A and methyl vinyl silicone rubber B in a weight ratio of 1:0.8; wherein, the vinyl content of the methyl vinyl silicone rubber A is 0.04 %, the methyl content is 99.96%, and the molecular weight is 550,000; the vinyl content of the methyl vinyl silicone rubber B is 0.14%, the methyl content is 99.86%, and the molecular weight is 550,000.

[0049] The chemical formulas of the above-mentioned methyl vinyl silicone rubber A and methyl vinyl silicone rubber B are as follows:

[0050]

[0051] Wherein, n=8780, m=3 of the methyl vinyl silicone rubber A; n=8150, m=10 of the methyl vinyl silicone rubber B.

[0052] The reinforcing agent has a specific surface area of ​​200m 2 / g of precipitated white carbon black; the silane coupling agent is propyltrimethoxysilane.

[0053] The flame...

Embodiment 2

[0063] A flame-retardant silicone rubber, comprising the following raw materials in parts by weight:

[0064]

[0065]

[0066] The composite silicone rubber is a mixture of methyl vinyl silicone rubber A and methyl vinyl silicone rubber B in a weight ratio of 1:1; wherein, the vinyl content of the methyl vinyl silicone rubber A is 0.08 %, the methyl content is 99.82%, and the molecular weight is 600,000; the vinyl content of the methyl vinyl silicone rubber B is 0.16%, the methyl content is 99.84%, and the molecular weight is 600,000.

[0067] The chemical formulas of the above-mentioned methyl vinyl silicone rubber A and methyl vinyl silicone rubber B are as follows:

[0068]

[0069] Wherein, n=8750, m=7 of the methyl vinyl silicone rubber A; n=8100, m=13 of the methyl vinyl silicone rubber B.

[0070] The reinforcing agent has a specific surface area of ​​250m 2 / g of precipitated white carbon black; the silane coupling agent is vinyltrimethoxysilane.

[0071] ...

Embodiment 3

[0081] A flame-retardant silicone rubber, comprising the following raw materials in parts by weight:

[0082]

[0083] The composite silicone rubber is a mixture of methyl vinyl silicone rubber A and methyl vinyl silicone rubber B in a weight ratio of 1:1.2; wherein, the vinyl content of the methyl vinyl silicone rubber A is 0.12 %, the methyl content is 99.88%, and the molecular weight is 650,000; the vinyl content of the methyl vinyl silicone rubber B is 0.18%, the methyl content is 99.82%, and the molecular weight is 650,000.

[0084] The chemical formulas of the above-mentioned methyl vinyl silicone rubber A and methyl vinyl silicone rubber B are as follows:

[0085]

[0086] Wherein, n=8730, m=10 of the methyl vinyl silicone rubber A; n=8050, m=15 of the methyl vinyl silicone rubber B.

[0087] The reinforcing agent has a specific surface area of ​​300m 2 / g of precipitated white carbon black; the silane coupling agent is vinyltriethoxysilane.

[0088] The flame ...

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Abstract

The invention relates to the technical field of silicone rubber, in particular to flame-retardant silicone rubber and a continuous production technology and system thereof. The flame-retardant silicone rubber is prepared from the following raw materials in parts by weight: 280-320 parts of composite silicone rubber, 140-160 parts of a reinforcing agent, 5-10 parts of hydroxyl-terminated polydimethylsiloxane, 0.3-0.6 part of silane coupling agent, 270-320 parts of a flame retardant, 0.3-0.6 part of zinc stearate and 1.5-2.0 part of a plasticity conditioning agent. According to the flame-retardant silicone rubber, the fire resistance of the silicone rubber is improved by adopting the flame retardant, meanwhile, the reinforcing agent, the hydroxyl-terminated polydimethylsiloxane, the plasticity conditioning agent and other materials are adopted, so that the prepared silicone rubber has better tensile strength, elongation at break, tearing strength and other properties, the mechanical strength is high, the stability is high, and the application range is wide.

Description

technical field [0001] The invention relates to the technical field of silicone rubber, in particular to a flame-retardant silicone rubber and its continuous production process and continuous production system. Background technique [0002] Due to its good aging resistance and stability, silicone rubber has a wide range of applications, and is widely used in products such as silicone tubes and power coating materials. However, the current silicone rubber materials have low flame retardancy. It is prone to dripping during the burning process, which reduces the mechanical strength and processability of silicone rubber products such as tensile strength, elongation at break, tear strength, etc., and cannot meet the current market requirements for silicone rubber properties. Certain restrictions. Contents of the invention [0003] In order to overcome the shortcomings and deficiencies in the prior art, the object of the present invention is to provide a flame-retardant silicon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L83/04C08L83/05C08K13/02C08K3/22C08K5/3492B29C48/40B29C48/92B29C48/25
CPCC08K2003/2227C08L83/04C08L2201/02C08L2205/025C08L2205/035C08K13/02C08K3/22C08K5/34928C08K3/36
Inventor 潘鹤斌
Owner 东莞市朗晟材料科技有限公司
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