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A kind of wear-resistant thermally conductive silicone rubber material and preparation method thereof

A heat-conducting silicone rubber and silicone rubber technology, applied in the field of rubber materials, can solve the problems of poor strength, poor thermal conductivity, and friction resistance of silicone rubber, and achieve the best mechanical strength effect

Active Publication Date: 2018-08-14
SHEN ZHEN JAME TECH CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, silicone rubber has poor strength, is not resistant to friction, and has poor thermal conductivity, which limits its application to a certain extent.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A method for preparing a wear-resistant and heat-conducting silicone rubber material, comprising the following process steps:

[0022] 1) According to the above-mentioned ingredients by weight: 70 parts of p-phenylene silicone rubber, 20 parts of methyl vinyl silicone rubber, 20 parts of micropowdered silica gel, 8 parts of polyvinyl alcohol, 5 parts of sodium hexatitanate, lanthanum oxysulfide 7 parts, 6 parts of propyl orthosilicate, 4 parts of kaolin, 4 parts of vinyl hydroxy silicone oil, 7 parts of polyarylether nitrile, 3 parts of nano cerium oxide, 16 parts of super wear-resistant carbon black, 8 parts of liquid paraffin, coupling 5 parts of agent and 1 part of crosslinking agent;

[0023] 2) Add vinyl hydroxy silicone oil, polyarylether nitrile and propyl orthosilicate into a high-speed kneader, and knead for 15 minutes at 170°C;

[0024] 3) Add p-phenylene silicone rubber, methyl vinyl silicone rubber, kaolin, super wear-resistant carbon black, micropowder sil...

Embodiment 2

[0028] A method for preparing a wear-resistant and heat-conducting silicone rubber material, comprising the following process steps:

[0029] 1) According to the above-mentioned ingredients by weight: 90 parts of p-phenylene silicone rubber, 40 parts of methyl vinyl silicone rubber, 36 parts of micropowdered silica gel, 16 parts of polyvinyl alcohol, 15 parts of sodium hexatitanate, lanthanum oxysulfide 18 parts, 13 parts of propyl orthosilicate, 9 parts of kaolin, 10 parts of vinyl hydroxy silicone oil, 16 parts of polyarylether nitrile, 8 parts of nano cerium oxide, 30 parts of super wear-resistant carbon black, 14 parts of liquid paraffin, coupling 10 parts of agent and 4 parts of crosslinking agent;

[0030] 2) Add vinyl hydroxy silicone oil, polyarylether nitrile and propyl orthosilicate to a high-speed kneader, and knead for 30 minutes at 230°C;

[0031] 3) Add p-phenylene silicone rubber, methyl vinyl silicone rubber, kaolin, super wear-resistant carbon black, micropow...

Embodiment 3

[0035] A method for preparing a wear-resistant and heat-conducting silicone rubber material, comprising the following process steps:

[0036] 1) According to the above-mentioned ingredients by weight: 80 parts of p-phenylene silicone rubber, 30 parts of methyl vinyl silicone rubber, 28 parts of micropowdered silica gel, 12 parts of polyvinyl alcohol, 10 parts of sodium hexatitanate, lanthanum oxysulfide 12 parts, 10 parts of propyl orthosilicate, 6 parts of kaolin, 7 parts of vinyl hydroxy silicone oil, 11 parts of polyarylether nitrile, 5 parts of nano cerium oxide, 24 parts of super wear-resistant carbon black, 11 parts of liquid paraffin, coupling 7 parts of agent and 2 parts of crosslinking agent;

[0037] 2) Add vinyl hydroxy silicone oil, polyarylether nitrile and propyl orthosilicate into a high-speed kneader, and knead for 22 minutes at 200°C;

[0038] 3) Add p-phenylene silicone rubber, methyl vinyl silicone rubber, kaolin, super wear-resistant carbon black, micropow...

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PUM

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Abstract

The invention provides an anti-abrasion heat-conducting silicon rubber material. The material is prepared from, by weight, 70-90 parts of poly-p-phenylene silicone rubber, 20-40 parts of methyl vinyl silicone rubber, 20-36 parts of superfine silica powder, 8-16 parts of polyvinyl alcohol, 5-15 parts of sodium hexatitanate, 7-18 parts of lanthanum oxysulfide, 6-13 parts of tetrapropyl orthosilicate, 4-9 parts of kaoline, 4-10 parts of vinyl hydroxyl silicone oil, 7-16 parts of poly (arylene ether nitrile), 3-8 parts of nano cerium oxide, 16-30 parts of intermediate super abrasion carbon black, 8-14 parts of liquid paraffin, 5-10 parts of a coupling agent and 1-4 parts of a cross-linking agent. The invention further discloses a preparation method of the silicon rubber material. The tensile strength of the silicon rubber material prepared through the method is 2.7-3.8 MPa, the tear strength is 22-29 KN / m, the heat conducting coefficient is larger than 0.97W / m.k, abrasion amount is smaller than 28 microns, and the silicon rubber material has good mechanical strength, heat conductivity and abrasion resistance.

Description

technical field [0001] The invention belongs to the field of rubber materials, in particular to a wear-resistant and heat-conducting silicone rubber material and a preparation method thereof. Background technique [0002] Silicone rubber is a chain structure connected by Si-O bonds, and its main component is linear polysiloxane with high molar mass. Since the Si-O-Si bond is the basic bond type, the silicon atom is mainly connected to the methyl group, a very small amount of unsaturated groups are introduced into the side chain, the intermolecular force is small, the molecule is in a helical structure, and the methyl group faces outward. Arranged and freely rotatable, the silicone rubber has better weather resistance, electrical insulation, chemical stability and good mold release, and can be widely used in electronic appliances, medical equipment, aerospace and other fields. However, silicone rubber has poor strength, is not resistant to friction, and has poor thermal cond...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/04C08L83/07C08L29/04C08L83/06C08L71/10C08L91/06C08K13/02C08K3/36C08K3/24C08K3/30C08K3/34C08K3/04C08K5/14
Inventor 郑春秋
Owner SHEN ZHEN JAME TECH CORP LTD