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Foamed silicon rubber and preparation method thereof

A technology of foaming silicone rubber and foaming agent, applied in the field of silicone rubber, can solve the problems of uncontrollable size and uniformity of foaming, gelation, etc., and achieve the effects of uniform foaming, simple process and long storage period

Active Publication Date: 2010-09-22
东莞新东方科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the foamed silicone rubber is prone to gel after being placed for a long time, and the size and uniformity of the foam can not be controlled

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A kind of foamed silicon rubber, is made up of the following raw materials of weight part:

[0032] Raw rubber 200 parts

[0033] Foaming agent 0.5 parts

[0034] 30 parts of methyl silicone oil

[0035] Hydroxy silicone oil 1.8 parts

[0036] Hydrogen silicone oil 0.2 parts

[0037] Pt complex 0.05 part

[0038] White carbon black 54 parts

[0039] Blocking agent 0.05 parts.

[0040] Wherein, the raw rubber is a siloxane polymer containing methyl vinyl, with a vinyl content of 0.05% and a molecular weight of 100,000.

[0041] Wherein, the foaming agent is an azo compound, which may be azobisisobutyronitrile, or other azo compounds.

[0042] Wherein, the viscosity of the methyl silicone oil is 500mpas.

[0043] Wherein, the viscosity of the hydroxy silicone oil is 10mpas, and the hydroxyl content is 8%.

[0044] Wherein, the viscosity of the hydrogen-containing silicone oil is 20mpas, and the hydrogen content is 1.2%.

[0045] Wherein, the white carbon black i...

Embodiment 2

[0055] A kind of foamed silicon rubber, is made up of the following raw materials of weight part:

[0056] Raw rubber 200 parts

[0057] Foaming agent 0.8 part

[0058] 36 parts of methyl silicone oil

[0059] Hydroxy silicone oil 2 parts

[0060] Hydrogen silicone oil 0.4 parts

[0061] Pt complex 0.1 parts

[0062] White carbon black 60 parts

[0063] Blocking agent 0.08 parts.

[0064] Wherein, the raw rubber is a siloxane polymer containing methyl vinyl, with a vinyl content of 0.2% and a molecular weight of 400,000.

[0065] Wherein, the foaming agent is an azo compound, which may be azobisisobutyronitrile, or other azo compounds.

[0066] Wherein, the viscosity of the methyl silicone oil is 800mpas.

[0067] Wherein, the viscosity of the hydroxy silicone oil is 30mpas, and the hydroxyl content is 9%.

[0068]Wherein, the viscosity of the hydrogen-containing silicone oil is 70mpas, and the hydrogen content is 1.4%.

[0069] Wherein, the white carbon black is pr...

Embodiment 3

[0079] A kind of foamed silicon rubber, is made up of the following raw materials of weight part:

[0080] Raw rubber 200 parts

[0081] Foaming agent 0.9 part

[0082] 40 parts of methyl silicone oil

[0083] Hydroxy silicone oil 2.2 parts

[0084] Hydrogen silicone oil 0.5 parts

[0085] Pt complex 0.15 parts

[0086] White carbon black 66 parts

[0087] Blocking agent 0.1 part.

[0088] Wherein, the raw rubber is a siloxane polymer containing methyl vinyl, with a vinyl content of 0.5% and a molecular weight of 700,000.

[0089] Wherein, the foaming agent is an azo compound, which may be azobisisobutyronitrile, or other azo compounds.

[0090] Wherein, the viscosity of the methyl silicone oil is 1000mpas.

[0091] Wherein, the viscosity of the hydroxy silicone oil is 50mpas, and the hydroxyl content is 10%.

[0092] Wherein, the viscosity of the hydrogen-containing silicone oil is 100mpas, and the hydrogen content is 1.6%.

[0093] Wherein, the white carbon black ...

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PUM

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Abstract

The invention belongs to the technical field of the silicon rubber and particularly relates to a foamed silicon rubber and a preparation method thereof. The foamed silicon rubber consists of the following raw materials in part by weight: 200 parts of crude rubber, 0.5 to 2 parts of foaming agent, 30 to 40 parts of methyl silicone oil, 1.8 to 2.2 parts of hydroxyl silicone oil, 0.2 to 0.5 part of hydrogen-containing silicone oil, 0.05 to 0.15 part of Pt coordination compound, 54 to 66 parts of white carbon black and 0.05 to 0.1 part of retardant, and is prepared under a certain process conditions. The prepared foamed silicon rubber has the advantages of uniform foaming, long storage period and simple process.

Description

technical field [0001] The invention belongs to the technical field of silicone rubber, and in particular relates to a foamed silicone rubber and a preparation method thereof. Background technique [0002] Foamed silicone rubber has the functions of shock absorption, sound insulation, heat insulation, sealing, breathability, non-toxicity, and good physiological inertia. application. [0003] Foaming silicone rubber is a foaming agent added to the rubber material. During the vulcanization process, the foaming agent decomposes at high temperature to generate air bubbles, which are wrapped in silicone rubber to form foamed silicone rubber. In the prior art, the foamed silicone rubber tends to produce gel after being left for a long time, and the size and uniformity of foaming cannot be controlled. Contents of the invention [0004] One of the objectives of the present invention is to provide a foamed silicone rubber with good stability and uniform foaming. [0005] The pur...

Claims

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Application Information

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IPC IPC(8): C08L83/07C08K13/02C08K3/36C08J9/10
Inventor 田玉文邵涛何百祥
Owner 东莞新东方科技有限公司
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