Method for preparing fire-resistant conductive silicone rubber

A technology of conductive silicon and silicone rubber raw rubber, which is applied in the field of silicone rubber, can solve the problems of silicone rubber being not fire-resistant, burning in case of fire, and failing to reach, and achieve large conductive current, good flame-retardant effect, and good adhesion Effect

Inactive Publication Date: 2014-03-26
SHANDONG YONGTAI CHEM GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] As silicone rubber is used more and more widely in people's lives, silicone rubber itself has been fully utilized for its excellent heat resistance, low temperature resistance, insulation, shock resistance, compression resistance, and abrasion resistance. However, silicon rubber The rubber itself is not fire-resistant, and it is easy to burn when it is used, which is very harmful. For example, the ignition coil is required not only to have conductivity, but also to have fire resistance similar to metal. At present, the general conductive silicone rubber can not reach To this requirement, the method of the present invention can overcome above application limitation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment １

[0034] A method for preparing fire-resistant conductive silicone rubber of the present invention comprises the following steps:

[0035] (1) Mix acetylene carbon black, hydroxy silicone oil and water accounting for 1% of the weight of acetylene carbon black, then add to the granulator to make acetylene carbon black particles;

[0036] (2) Put the silicone rubber raw rubber into the kneader, add the white carbon black in batches, add methyl silicone oil in the middle, and the temperature in the kneader is 130-140°C;

[0037] (3) Heat up to 170-180°C, add liquid silicone rubber, calcium carbonate, acetylene carbon black particles, bentonite, zirconia, aluminum hydroxide, magnesium stearate, structure inhibitor, vinyl-containing silane coupling agent in sequence ;

[0038] (4) Cool down to 130-140°C, stir for 2-3 minutes, and finally add platinum complex to obtain refractory conductive silicone rubber.

[0039] Each composition is by weight ratio:

[0040] Methyl vinyl silicon...

Embodiment 2

[0059] A method for preparing fire-resistant conductive silicone rubber of the present invention comprises the following steps:

[0060] (1) Mix acetylene carbon black, hydroxy silicone oil and water accounting for 1% of the weight of acetylene carbon black, then add to the granulator to make acetylene carbon black particles;

[0061] (2) Put the silicone rubber raw rubber into the kneader, add the white carbon black in batches, add methyl silicone oil in the middle, and the temperature in the kneader is 130-140°C;

[0062] (3) Heat up to 170-180°C, add liquid silicone rubber, calcium carbonate, acetylene carbon black particles, bentonite, zirconia, aluminum hydroxide, magnesium stearate, structure inhibitor, vinyl-containing silane coupling agent in sequence ;

[0063] (4) Cool down to 130-140°C, stir for 2-3 minutes, and finally add platinum complex to obtain refractory conductive silicone rubber.

[0064] Each composition is by weight ratio:

[0065] Methyl vinyl silicon...

Embodiment 3

[0084] A method for preparing fire-resistant conductive silicone rubber of the present invention comprises the following steps:

[0085] (1) Mix acetylene carbon black, hydroxy silicone oil and water accounting for 1% of the weight of acetylene carbon black, then add to the granulator to make acetylene carbon black particles;

[0086] (2) Put the silicone rubber raw rubber into the kneader, add the white carbon black in batches, add methyl silicone oil in the middle, and the temperature in the kneader is 130-140°C;

[0087] (3) Heat up to 170-180°C, add liquid silicone rubber, calcium carbonate, acetylene carbon black particles, bentonite, zirconia, aluminum hydroxide, magnesium stearate, structure inhibitor, vinyl-containing silane coupling agent in sequence ;

[0088] (4) Cool down to 130-140°C, stir for 2-3 minutes, and finally add platinum complex to obtain refractory conductive silicone rubber.

[0089] Each composition is by weight ratio:

[0090] Methyl vinyl silicon...

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Abstract

The invention discloses a method for preparing fire-resistant conductive silicone rubber. The method comprises the steps as follows: acetylene black is pretreated firstly, then raw silicone rubber is mixed with other additives, and the temperature is adjusted for kneading. According to the method, the silicone rubber can be resistant to the high temperature of 360 DEG C, the tensile strength can be up to 8.5 MPa, the tearing strength is 33 N/mm, the volume resistivity can be up to 50 omega.cm, the silicone rubber is free from deformation and embrittlement in case of fire for a long time, physical properties of the silicone rubber are not changed, and the good flame retardant effect can be realized.

Description

Technical field [0001] The invention involves the field of silicon rubber technology, especially a method to prepare fire -resistant electric silicon rubber. Background technique [0002] As silicone rubber is more and more widely used in people's lives, the excellent heat resistance, low temperature, insulation, seismic, pressure resistance, and abrasion resistance of silicone rubber itself have been fully used, but siliconThe rubber itself is not resistant to fire, and it is easy to cause fire and combustion when using it. It is very harmful. For example, the ignition coil requires not only the conductivity, but also the fire resistance of similar metal.By this request, the method of the present invention can overcome the above application restrictions. Invention content [0003] The purpose of the present invention is to provide a method of preparing fire -resistant electric silicon rubber for the above -mentioned defects.The invention of silicon rubber can resist 360 degrees...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L83/04C08K13/06C08K9/06C08K3/04C08K3/36C08K3/26C08K3/34C08K3/22C08K5/098C08K5/00
Inventor 尤晓明李洋张国栋王显涛延云峰魏文祥
Owner SHANDONG YONGTAI CHEM GROUP
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