Solid silicon rubber and preparation method thereof

A technology of solid silicon and silicone rubber raw rubber, applied in the rubber field, can solve the problems of weak interaction force, difficult to meet the needs of use, and low tear strength.

Inactive Publication Date: 2018-11-02
ENN GRAPHENE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the fields of electronics, electricity, aviation, and hygiene, a large number of silicone rubber products are part seals with complex structures, which not only require the material to have high tear resistance, but also require silicone rubber to have good conductivity. The weak interaction between rubber molecular chains leads to poor mechanical properties of silicone rubber, especially low tear strength, and poor electrical conductivity, which is difficult to meet the needs of use
[0003] Therefore, the research on solid silicone rubber needs to be deepened

Method used

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  • Solid silicon rubber and preparation method thereof
  • Solid silicon rubber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Add 100g of raw silicone rubber with a vinyl content of 0.22% (mol %), 55g of fumed white carbon black, and 5g of hydroxy silicone oil into the kneader in batches, heat to 80°C, knead until the material becomes agglomerate, and then add 5.0g Kneading was continued with 2g of iron oxide, 2g of vinyl silicone oil (average molecular weight of 50,000), and finally 10g of acetylene carbon black and 2g of carbon nanotubes were added. After the kneading is completed, discharge the rubber to the open mill, add 1.2 g of peroxide vulcanizing agent double 2,5, mix well and discharge the rubber to obtain a film. Place the film in a 2mm thick mold and vulcanize it on a plate vulcanizer at 165°C and 10.0MPa for 5 minutes to obtain a solid silicone rubber.

Embodiment 2

[0034] Add 100g of raw silicone rubber with a vinyl content of 0.15% (mole percentage), 30g of fumed white carbon black, and 3g of hydroxy silicone oil into the kneader in batches, increase the temperature to 80°C, knead until the material becomes agglomerate, and then add 5.0g Kneading of iron oxide, 10g vinyl silicone oil (average molecular weight 2000) was continued, and finally 40g acetylene carbon black and 1g carbon nanotubes were added. After the kneading is completed, discharge the rubber to the open mill, add 1.2g of peroxide vulcanizing agent double 2,5, mix evenly and discharge the rubber to obtain the film. Place the film in a 2mm thick mold at 165°C, 10.0MPa Vulcanize on a flat vulcanizer for 5 minutes to obtain solid silicone rubber.

Embodiment 3

[0036] Add 100g of raw silicone rubber with a vinyl content of 0.15% (mole percentage), 30g of fumed white carbon black, and 3g of hydroxy silicone oil into the kneader in batches, increase the temperature to 80°C, knead until the material becomes agglomerate, and then add 5.0g Kneading of iron oxide, 5g vinyl silicone oil (average molecular weight 50,000) was continued, and finally 30g acetylene carbon black and 2g carbon nanotubes were added. After the kneading is completed, discharge the rubber to the open mill, add 1.2g of peroxide vulcanizing agent double 2,5, mix evenly and discharge the rubber to obtain the film. Place the film in a 2mm thick mold at 165°C, 10.0MPa Vulcanize on a flat vulcanizer for 5 minutes to obtain solid silicone rubber.

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Abstract

The invention provides solid silicon rubber and a preparation method thereof. The solid silicon rubber is prepared from the following components in parts by weight: 100 parts of raw silicon rubber, 30-60 parts of white carbon black, 2-10 parts of anti-tearing additive, 0.4-1.2 parts of vulcanizing agent, 1-2 parts of carbon nanotube, 10-40 parts of acetylene carbon black, 2-5 parts of white carbonblack dispersing additive and 2-7 parts of anti-thermooxidative-aging additive, wherein the anti-tearing additive is vinyl silicon oil. The solid silicon rubber and the preparation method provided bythe invention have the beneficial effects that due to addition of the vinyl silicon oil, the anti-tearing property of the solid silicon rubber can be well improved; meanwhile, by reuse of the carbonnanotubes and the acetylene carbon black, the volume resistivity of the solid silicon rubber can be greatly reduced, i.e., the conductivity of the solid silicon rubber can be improved; in addition, the solid silicon rubber prepared according to the proportion can meet the requirements of the solid silicon rubber for cable accessories in multiple respects of mechanical strength, anti-tearing strength and conductivity and the like in the power industry simultaneously.

Description

Technical field [0001] The invention relates to the technical field of rubber, in particular to solid silicone rubber and a preparation method thereof. Background technique [0002] Silicone rubber has good heat resistance, low temperature resistance, aging resistance, excellent processing performance and biocompatibility, and is widely used in modern industries. In the fields of electronics, electric power, aviation, and health, a large number of silicone rubber products are parts and seals with complex structures. Not only are materials required to have high tear resistance, but also silicone rubber is required to have good electrical conductivity. The weak interaction force between rubber molecular chains results in poor mechanical properties of silicone rubber, especially low tear strength, and poor electrical conductivity, which is difficult to meet the needs of use. [0003] Therefore, the research on solid silicone rubber needs to be in-depth. Summary of the invention [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/04C08L83/07C08K3/36C08K3/04C08K5/14C08K3/22C08K5/13C08K5/134B29C35/02
CPCB29C35/02C08K2003/2272C08K2201/011C08L83/04C08L2205/025C08K3/36C08K3/04C08K3/041C08K5/14C08K3/22C08K5/13C08K5/1345
Inventor 杜航赵鸿宇贺世家
Owner ENN GRAPHENE TECH CO LTD
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