High-thermal-conductivity rubber nano composite material and preparation method thereof

A composite material and rubber nanotechnology, applied in the rubber field, can solve problems such as unfavorable thermal conductivity of materials, unfavorable filler network, etc., and achieve the effects of easy mass production, simple operation and low energy consumption

Active Publication Date: 2021-03-05
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, excessive dispersion is not conducive to the formation of the filler network in ...

Method used

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  • High-thermal-conductivity rubber nano composite material and preparation method thereof
  • High-thermal-conductivity rubber nano composite material and preparation method thereof
  • High-thermal-conductivity rubber nano composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] The specific formula is as follows:

[0057] Each component is calculated in parts by weight,

[0058]

[0059] The specific implementation process is as follows:

[0060] Stir and ultrasonically mix 100ml of graphene oxide aqueous dispersion with a concentration of 2mg / ml (adjusted by ammonia water to pH=10.5) and 100ml of nano-alumina aqueous dispersion with a concentration of 50mg / ml, and then add 2 grams of ascorbic acid and 0.05 grams of Triton X-100 emulsifier, 16.67 grams of natural rubber latex (60%wt of rubber content), 0.05 gram of sulfur water dispersion (20%wt of sulfur content), 0.2 gram of zinc oxide water dispersion (20%wt of zinc oxide content), 0.1 gram of accelerator D aqueous dispersion (promoting D content 20%wt), 0.2 gram of antioxidant AW aqueous dispersion (AW content 20%wt), etc. were stirred evenly. The uniformly stirred slurry was sealed and placed in a blast drying oven at 90°C for 2 hours to obtain a hydrogel. The second step: the obtai...

Embodiment 2

[0062] The specific formula is as follows:

[0063] Each component is calculated in parts by weight,

[0064]

[0065]

[0066] The specific implementation process is as follows:

[0067] 100ml concentration of 10mg / ml graphene oxide aqueous dispersion (ammonia water to adjust its pH=8) and 100ml concentration of 100mg / ml nano-zinc oxide aqueous dispersion were stirred and ultrasonically mixed evenly, followed by adding 2 grams of ethylenediamine, 0.5 Gram sorbitan fatty acid ester emulsifier, 16.67 gram styrene-butadiene rubber latex (containing 60%wt of rubber content), 0.05 gram sulfur aqueous dispersion (sulfur content 20%wt), 0.2 gram zinc oxide aqueous dispersion (zinc oxide Content 20%wt), 0.1 gram accelerator D water dispersion (promote D content 20%wt), 0.2 gram anti-aging agent AW water dispersion (AW content 20%wt), etc. Stir evenly. The uniformly stirred slurry was sealed and placed in an air-blast drying oven at 80°C for reduction for 6 hours to obtain a h...

Embodiment 3

[0069] The specific formula is as follows:

[0070] Each component is calculated in parts by weight,

[0071]

[0072]

[0073] The specific implementation process is as follows:

[0074] 100ml concentration is 10mg / ml graphene oxide aqueous dispersion (ammonia water adjusts its PH=11) and 100ml concentration is 150mg / ml carbon nanotube aqueous dispersion liquid stirring, ultrasonic mixing is uniform, add 4 grams of ascorbic acid successively, 1 gram loses Sorbitan fatty acid ester polyoxyethylene ether emulsifier, 16.67 grams of nitrile rubber latex (containing 60%wt of glue), 0.05 gram of sulfur water dispersion (sulfur content 20%wt), 0.2 gram of zinc oxide water dispersion ( Zinc oxide content 20%wt), 0.1 gram accelerator D water dispersion (promote D content 20%wt), 0.2 gram anti-aging agent AW water dispersion (AW content 20%wt) etc. Stir evenly. The uniformly stirred slurry was sealed and placed in a blast drying oven at 70°C for reduction for 6 hours to obtain ...

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Abstract

The invention discloses a high-thermal-conductivity rubber nano composite material and a preparation method thereof. The composite material is prepared from the following raw materials: 100 parts by weight of rubber latex; 0.5-20 parts by weight of a graphene oxide aqueous dispersion; 5-500 parts by weight of a nano heat-conducting filler; 1-40 parts by weight of a reducing agent; 0.01-10 parts byweight of an emulsifier; and 0.1-5 parts by weight of a vulcanizing agent. According to the invention, the nano heat-conducting filler and the rubber latex particles are guided to forma three-dimensional network through graphene oxide gelation, and then the high-thermal-conductivity rubber composite material internally containing the three-dimensional filler network is prepared through hot pressing of the network, so that the heat-conducting property is greatly improved.

Description

technical field [0001] The invention relates to the technical field of rubber, in particular to a hot-pressed high thermal conductivity rubber nanocomposite material filled with nanoparticles guided by graphene oxide hydrogel. Background technique [0002] With the continuous development of electronic appliances to miniaturization / high power consumption, the energy density of electronic equipment is getting higher and higher, which leads to a large amount of heat generated during use. If the heat cannot be exported in time, it will cause the equipment to freeze or even It is circuit damage. In order to achieve effective thermal management, it is necessary to fill the thermal interface material between the electronic chip (heating end) and the heat sink to eliminate the tiny gap between the two surfaces, so as to improve the heat transfer efficiency from the chip to the heat sink. [0003] Rubber material is a kind of material with intrinsic high flexibility and high elastic...

Claims

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Application Information

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IPC IPC(8): C08L7/02C08L9/08C08L9/04C08L9/10C08L15/00C08K13/02C08K3/04C08K3/22C08K3/06C09K5/14C08J3/075
CPCC08K3/042C08K3/22C08K3/06C08K3/041C08K3/04C08K13/02C09K5/14C08J3/075C08K2201/011C08K2003/2227C08K2003/2296C08L7/02C08L9/08C08L9/04C08L9/10C08L15/00Y02P20/10
Inventor 卢咏来李京超张朝旭咸越林驭韬赵秀英张立群
Owner BEIJING UNIV OF CHEM TECH
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