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Modified silicone rubber and preparation method thereof

A technology for modifying silicon and rubber, applied in the field of polymer materials, can solve the problems of poor elasticity of silicone rubber, unsuitable for cable plugging materials, etc., and achieve the effects of small compression deformation, few types of raw materials, and high tensile elongation.

Inactive Publication Date: 2017-09-08
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the patented silicone rubber has poor elasticity and is not suitable for cable sealing materials

Method used

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  • Modified silicone rubber and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A modified silicone rubber made of the following raw materials in weight percent: 27% of 110-2 type methyl vinyl silicone rubber, 5% of boron fiber, 12% of ceramic micropowder, 12% of white carbon black, modified wood 3% ash, 0.5% hydroxy silicone oil, 0.5% vulcanizing agent bis-pentasulfurizing agent and 40% flame retardant aluminum hydroxide.

[0024] The preparation method of described modified tree ashes comprises the following steps: tree ashes are soaked with mass fraction 15% hydrogen peroxide for 2.5h, then washed with deionized water to neutrality, and dried; then adding 3% of tree ashes weight nano-carbon, 1% polyisobutylene, 2% tributyl citrate, 1.5% aluminum hydroxide and 1% silane coupling agent KH550, stirred at high speed 3000r / min for 20min, dried and pulverized to obtain.

[0025] The preparation method of above-mentioned modified rubber comprises the following steps:

[0026] (1) Add methyl vinyl silicone rubber, boron fiber, ceramic micropowder, whit...

Embodiment 2

[0029] A modified silicone rubber made of the following raw materials in weight percent: 28% of 110-2 type methyl vinyl silicone rubber, 8% of boron fiber, 15% of ceramic micropowder, 11.5% of white carbon black, modified wood Ash 3%, hydroxy silicone oil 0.7%, vulcanizing agent bis-pentasulfurizing agent 0.8% and flame retardant magnesium hydroxide 33%.

[0030] The preparation method of the modified tree ashes comprises the following steps: after the tree ashes are soaked in 12% hydrogen peroxide by mass fraction for 2 hours, then washed with deionized water until neutral, and dried; % polyisobutylene, 3% tributyl citrate, 1% aluminum hydroxide and 1.2% silane coupling agent KH560, stirred at a high speed of 2000r / min for 30min, dried and pulverized to obtain the product.

[0031] The preparation method of above-mentioned modified rubber comprises the following steps:

[0032] (1) Add methyl vinyl silicone rubber, boron fiber, ceramic micropowder, white carbon black, modifi...

Embodiment 3

[0035] A modified silicone rubber, made of the following raw materials in weight percentage: 30% of 110-2 type methyl vinyl silicone rubber, 10% of boron fiber, 13% of ceramic micropowder, 10% of white carbon black, modified wood 1% ash, 0.6% hydroxy silicone oil, 0.4% vulcanizing agent bis-pentasulfurizing agent and 35% flame retardant aluminum hydroxide.

[0036] The preparation method of described modified tree ashes comprises the following steps: after tree ashes are soaked in 10% hydrogen peroxide by mass fraction for 3 hours, then washed with deionized water to neutrality, and dried; then adding 2% of the weight of tree ashes of nano-carbon, 1 % polyisobutylene, 3% tributyl citrate, 2% aluminum hydroxide and 1.5% silane coupling agent KH560, stirred at a high speed of 2000r / min for 25min, dried and pulverized to obtain the product.

[0037] The preparation method of above-mentioned modified rubber comprises the following steps:

[0038] (1) Add methyl vinyl silicone rub...

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Abstract

The invention belongs to the technical field of high polymer materials, and particularly relates to modified silicone rubber and a preparation method thereof. The modified silicone rubber is prepared from, by weight, 27-38% of methyl vinyl silicone rubber, 5-10% of boron fiber, 10-15% of fine ceramic powder, 8-13% of white carbon black, 1-3% of modified tree ashes, 0.5-1.0% of hydroxyl silicone oil, 0.4-0.8% of a vulcanizing agent and 30-40% of flame retardant. Accordingly, all raw materials act in synergy, the preparation method is simple, and the obtained modified silicone rubber is low in density, low in mass, proper in hardness, high in tensile strength, excellent in ageing property, high in tensile elongation, high in tear strength, good in toughness, elasticity and flame retardancy and capable of being widely applied to cable blocking materials.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a modified silicone rubber and a preparation method thereof. Background technique [0002] At present, the international electric power industry still uses the early inorganic and organic soft flame-retardant materials for cable sealing materials and devices. The sealing effect is very dependent on the physical and chemical properties of the material itself, and is easily affected by external ultraviolet temperature, temperature, and pollution factors. As the use time increases, the performance will further decline, and the protection against rodents is also limited, and it cannot form a long-term tough and effective seal between the cable and the wall or cabinet. [0003] Chinese patent CN10044165C discloses a halogen-free low-density fireproof sealing blockage used for sealing holes in modern buildings. Its characteristic is that the halogen-free fireproo...

Claims

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Application Information

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IPC IPC(8): C08L83/07C08L83/06C08K13/06C08K9/06C08K9/04C08K9/02C08K3/26C08K7/06C08K3/00C08K3/36C08K5/14C08K3/22B29C35/02
CPCB29C35/02C08K2003/2224C08K2003/2227C08K2003/262C08L83/04C08L2201/02C08L2205/02C08L83/06C08K13/06C08K9/06C08K9/04C08K9/08C08K9/02C08K3/26C08K7/06C08K3/00C08K3/36C08K5/14C08K3/22
Inventor 余立平车晓涛白云樊越甫佘彦杰孙友芳李瑞玉李钢尚德胡雅洁王月敏牛宇干肖学新
Owner STATE GRID CORP OF CHINA
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