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High-density fire-proof silicone rubber and preparation method thereof

A silicone rubber and high-density technology, which is applied in the field of high-density fire-resistant silicone rubber and its preparation, can solve the inconvenience of maintenance and replacement of pipes and cables and other wall-penetrating objects, and cannot adapt to workplaces with high fire-proof requirements. To meet the radiation resistance requirements of nuclear power plants and other issues, achieve the effects of easy disassembly and replacement, good electrical insulation, and high mechanical strength

Active Publication Date: 2012-06-20
HAILONG EMERSON ZHENJIANG ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Organic fireproof blockage will volatilize toxic gas in case of fire; while fireproof plaster is non-toxic, but it forms a hard block after curing, has no stretching and compression elasticity, and cannot compensate for mechanical displacement caused by mechanical pipeline vibration and building settlement , and pipes and cables and other wall-penetrating objects are extremely inconvenient in maintenance and replacement
[0003] However, the traditional silicone rubber has poor flame retardancy and poor radiation resistance, and cannot adapt to workplaces with high fire protection requirements such as power plants, nuclear power plants, and petrochemical oil and gas pipelines, especially the high radiation resistance requirements of nuclear power plants.

Method used

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  • High-density fire-proof silicone rubber and preparation method thereof
  • High-density fire-proof silicone rubber and preparation method thereof
  • High-density fire-proof silicone rubber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] a) Take by weighing each raw material according to the following formula:

[0036] The composition formula of A component is as follows:

[0037]

[0038]

[0039] The composition formula of B component is as follows:

[0040]

[0041] b) Add polymethylvinylsiloxane and hydroxy silicone oil in component A into the reaction kettle, mix for 10 to 60 minutes at 20 to 60°C and a vacuum of -0.1 to 0.05 MPa, and then add to the above mixed solution Metal catalyst and reinforcing filler are stirred and mixed with a high-speed emulsifier for 30-60 minutes, then a flame retardant is added and stirred and mixed, metal powder is added, and vacuum degassed for 30-60 minutes; press filter with a 100-mesh filter, and fill to obtain A components;

[0042] c) Add polymethylvinylsiloxane, hydrogen-containing silicone oil, and hydroxyl silicone oil in component B into the reaction kettle, stir at 20-60°C for 10-60 minutes, and then add reinforcing filler, barrier Combustion a...

Embodiment 2

[0045] The composition formula of A component is as follows:

[0046]

[0047]

[0048] The composition formula of B component is as follows:

[0049]

[0050] All the other contents are the same as those described in Example 1.

Embodiment 3

[0052] The composition formula of A component is as follows:

[0053]

[0054] The composition formula of B component is as follows:

[0055]

[0056] All the other contents are the same as those described in Example 1.

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PUM

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Abstract

The invention discloses a high-density fire-proof silicone rubber and a preparation method thereof. The high-density fire-proof silicone rubber is formed by mixing a component A and a component B according to a volume ratio of 1:1 and curing the mixture at a temperature of between 15 and 40 DEG C, wherein the component A consists of hydroxy silicone oil, polymethylvinylsiloxane, a metal catalyst,a reinforcing filler, a flame retardant and a metal powder according to a certain proportion; and the component B consists of polymethylvinylsiloxane, hydrogen containing silicone oil, hydroxy silicone oil, a flame retardant, a reinforcing filler and a metal powder according to a certain proportion. The high-density fire-proof silicone rubber has the advantages of good flame retardance performance, excellent mechanical performance, toxic gas prevention in fire and the like, and can be applied to mechanical pipelines, cables and other plugging structures which have higher requirements on fire proofing and mechanical performances.

Description

technical field [0001] The invention relates to a high-density fireproof silicone rubber and a preparation method thereof, belonging to the technical field of polymer fireproof materials. Background technique [0002] Most of the existing fireproofing blockages use organic fireproofing materials and fireproofing plaster. Organic fireproof blockage will volatilize toxic gas in case of fire; while fireproof plaster is non-toxic, but it forms a hard block after curing, has no stretching and compression elasticity, and cannot compensate for mechanical displacement caused by mechanical pipeline vibration and building settlement , and pipes and cables and other wall-penetrating objects are extremely inconvenient in maintenance and replacement. [0003] However, traditional silicone rubber has poor flame retardancy and poor radiation resistance, and cannot adapt to workplaces with high fire protection requirements such as power plants, nuclear power plants, and petrochemical oil a...

Claims

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Application Information

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IPC IPC(8): C08L83/06C08L83/07C08L83/05C08K13/02C08K3/08
Inventor 戴金华施吉慧刘祥涛
Owner HAILONG EMERSON ZHENJIANG ENERGY TECH
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