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High-heat-conductivity rubber composite material and preparation method thereof

A composite material, high thermal conductivity technology, applied in the field of rubber materials, to achieve the effect of less process, simple manufacturing process and low cost

Inactive Publication Date: 2012-06-20
GUANGDONG UNIV OF PETROCHEMICAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, products for butadiene rubber, EPDM rubber and other varieties have not yet appeared.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Put 100 parts of EPDM rubber into the open rubber mixing machine for mixing, the roll temperature is 40-50°C, the roll distance is adjusted to 1mm, thin pass 5 times, and then the roll distance is increased to make the raw rubber cover the roll; After the surface of the material is smooth, add 5 parts of zinc oxide, 2 parts of stearic acid, 1 part of RD antioxidant, 1.2 parts of CZ accelerator, 50 parts of carbon black, 90 parts of micron silicon carbide, and finally add 2 parts of sulfur; After mixing evenly, thinly pass and make a triangle bag and roll 5 times each, and adjust the roller distance to 1.5 mm to produce a sheet. Put the tablet into the mold (cavity length × width 150mm × 75mm, thickness 2 or 6.5mm), vulcanize on a flat vulcanizer, the vulcanization time is 15 minutes, the vulcanization temperature is 160°C, and the vulcanization pressure is 10MPa.

Embodiment 2

[0032] Put 100 parts of EPDM rubber into the open rubber mixing machine for mixing, the roll temperature is 40-50°C, the roll distance is adjusted to 1mm, thin pass 5 times, and then the roll distance is increased to make the raw rubber cover the roll; After the surface of the material is smooth, add 5 parts of zinc oxide, 2 parts of stearic acid, 1 part of RD antioxidant, 1.2 parts of CZ accelerator, 50 parts of carbon black, 150 parts of micron silicon carbide, and finally add 2 parts of sulfur; After mixing evenly, thinly pass and make a triangle bag and roll 5 times each, and adjust the roller distance to 1.5 mm to produce a sheet. Put the tablet into the mold (cavity length × width 150mm × 75mm, thickness 2 or 6.5mm), vulcanize on a flat vulcanizer, the vulcanization time is 15 minutes, the vulcanization temperature is 160°C, and the vulcanization pressure is 10MPa.

Embodiment 3

[0034] Put 100 parts of EPDM rubber into the open rubber mixing machine for mixing, the roll temperature is 40-50°C, the roll distance is adjusted to 1mm, thin pass 5 times, and then the roll distance is increased to make the raw rubber cover the roll; After the surface of the material is smooth, add 5 parts of zinc oxide, 2 parts of stearic acid, 1 part of RD antioxidant, 1.2 parts of CZ accelerator, 50 parts of carbon black, 150 parts of nano-scale silicon carbide, and finally add 2 parts of sulfur; After mixing evenly, thinly pass and make a triangle bag and roll 5 times each, and adjust the roller distance to 1.5 mm to produce a sheet. Put the tablet into the mold (cavity length × width 150mm × 75mm, thickness 2 or 6.5mm), vulcanize on a flat vulcanizer, the vulcanization time is 15 minutes, the vulcanization temperature is 160°C, and the vulcanization pressure is 10MPa.

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PUM

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Abstract

The invention discloses a high-heat-conductivity rubber composite material and a preparation method of the high-heat-conductivity rubber composite material. The high-heat-conductivity rubber composite material consists of the following ingredients in parts by mass: 100 of rubber, 4 to 6 of zinc oxide, 1 to 3 of stearic acid, 1 to 2 of anti-aging agents, 40 to 60 of carbon black, 1 to 1.5 of promoters, 1 to 3 of sulphur and 50 to 170 of heat conducting agents. The manufacture method comprises the following process steps that: the rubber is added into an open mill, the zinc oxide, the stearic acid, the anti-aging agents, the promoters, the carbon black and the heat conducting agents are sequentially added after the roll recovering, and finally, the sulphur is added. After rubber materials are uniformly mixed, the thin conduction is carried out, triangle bag packing and rolling are respectively carried out for five times, and the roll distance is regulated to 1.5mm for sheet output. The material sheets are placed into a mold, the vulcanization is carried out on a flat plate vulcanization machine, the vulcanization time is 15 to 20 minutes, the vulcanization temperature is 160 to 165 DEG C, and the vulcanization pressure is 10 to 12MPa. The material disclosed by the invention has an excellent physical and mechanical property and a high heat conduction factor.

Description

technical field [0001] The invention relates to the technical field of rubber materials, in particular to a high thermal conductivity rubber composite material and a preparation method thereof. Background technique [0002] [0003] With the development of microelectronic assembly in the direction of densification, the temperature of the working environment of electronic components continues to rise, resulting in a significant decline in their reliability. Therefore, timely heat dissipation becomes an important factor affecting the service life of electronic components. Thermally conductive rubber, as a type of rubber-based composite material with extremely strong thermal conductivity, has been widely used in electronics, electrical, military and other fields that require heat dissipation, heat transfer, insulation, and shock absorption. Conductive rubber is of great significance to the densification, reliability improvement, miniaturization and extension of service life o...

Claims

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Application Information

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IPC IPC(8): C08L7/00C08L9/02C08L9/06C08L23/16C08L9/00C08K13/02C08K3/22C08K5/09C08K3/04C08K3/06C08K3/36C08K3/28C08K3/38C08K3/34C08K3/14C08K13/04C08K7/06C08K7/04B29C35/02
Inventor 张世杰程丽华
Owner GUANGDONG UNIV OF PETROCHEMICAL TECH
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