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Conductive rubber and preparation method thereof

A conductive rubber and rubber technology, applied in the rubber field, can solve the problems of unstable resistance, great influence of resistance, and increased resistance, and achieve the effects of small filling amount, improved compatibility and dispersibility, and improved electrical conductivity.

Inactive Publication Date: 2018-06-01
ENN GRAPHENE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] The existing conductive rubber uses carbon black or conductive carbon black as the conductive filler, and the filling amount is large, resulting in a rapid increase in hardness. It needs to be filled with a large amount of plasticizer to reduce the hardness, resulting in an increase in resistance; at the same time, the resistance of the system filled with a large amount of carbon black It cannot be reduced to "0", and the resistance is greatly affected by the mixing process, equipment and personnel, and the resistance is unstable

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  • Conductive rubber and preparation method thereof
  • Conductive rubber and preparation method thereof

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preparation example Construction

[0043] According to the method for preparing conductive rubber in the embodiment of the present invention, the compatibility and dispersibility between carbon nanotubes and rubber-containing polymers can be improved by surface modification of carbon nanotubes, and then the surface-modified carbon nanotubes Mixing and kneading with rubber-containing polymers can significantly improve the electrical conductivity, mechanical properties and service life of the resulting conductive rubber. Compared with the use of carbon black or conductive carbon black in the prior art as a large amount of conductive filler and the need for a large amount of plasticizer to reduce the hardness, the carbon nanotube filling amount in the present application is small and does not cause the hardness of the conductive rubber to be significantly reduced. Growth, so as to reduce the cost of conductive rubber while ensuring its high electrical conductivity.

[0044] In yet another aspect of the present inv...

Embodiment 1

[0047] Mix carbon nanotubes and silane coupling agent according to the mass ratio of 100:1 for surface modification; then mechanically mix the obtained modified carbon nanotubes with rubber-containing polymer according to the mass ratio of 1:10, and carry out banburying, wherein, containing The polymer of rubber contains: 100 parts by weight of rubber; 3 parts by weight of zinc oxide; 6 parts by weight of polyethylene glycol; 1 part by weight of stearic acid; 2 parts by weight of antioxidant; 2 parts by weight of coumarone The carbon black of 70 parts by weight; The filler of 95 parts by weight; The petroleum wax of 35 parts by weight; The functional carbon nanotube of 15 parts by weight; The calcium hydrogen phosphate of 1.5 parts by weight; ester, and the Mooney viscosity of the above rubber at room temperature is 12ML100°C 1+4, the anti-aging agent is anti-aging agent 4020, the filler is carbon black, the functional carbon nanotubes are aminated carbon nanotubes, and the spe...

Embodiment 2

[0049] Mix carbon nanotubes and silane coupling agents according to the mass ratio of 100:5 for surface modification; then mechanically mix the obtained modified carbon nanotubes with rubber-containing polymers according to the mass ratio of 1:50, and perform banburying, wherein, containing The polymer of rubber contains: 100 parts by weight of rubber; 10 parts by weight of zinc oxide; 2 parts by weight of polyethylene glycol; 4 parts by weight of stearic acid; 0.5 parts by weight of antioxidant; 7 parts by weight of coumarone The carbon black of 100 parts by weight; The filler of 65 parts by weight; The petroleum wax of 65 parts by weight; The functional carbon nanotube of 2 parts by weight; The calcium hydrogen phosphate of 4.5 parts by weight; ester, and the Mooney viscosity of the above rubber at room temperature is 15ML100°C 1+4, the anti-aging agent is anti-aging agent RD, the filler is white carbon black, the functional carbon nanotubes are hydroxylated graphene, and the...

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Abstract

The invention discloses conductive rubber and a preparation method thereof. The preparation method comprises the following steps: (1) performing surface modification on a carbon nano tube; (2) mechanically mixing the modified carbon nano tube obtained in the step (1) with a rubber-containing polymer, and performing internal mixing to obtain a rubber compound; (3) performing open mixing on the rubber compound to obtain the conductive rubber. According to the method, through internal mixing and open mixing of the surface modified carbon nano tube and the rubber-containing polymer, the conductivity and mechanical property of the obtained conductive rubber can be remarkably improved, and service life of the obtained conductive rubber can be remarkably prolonged.

Description

technical field [0001] The invention belongs to the field of rubber, in particular, the invention relates to conductive rubber and a preparation method thereof. Background technique [0002] The existing conductive rubber uses carbon black or conductive carbon black as the conductive filler, and the filling amount is large, resulting in a rapid increase in hardness. It needs to be filled with a large amount of plasticizer to reduce the hardness, resulting in an increase in resistance; at the same time, the resistance of the system filled with a large amount of carbon black It cannot be reduced to "0", and the resistance is greatly affected by the mixing process, equipment and personnel, and the resistance is unstable. [0003] Therefore existing conductive rubber needs to be further improved. Contents of the invention [0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. Therefore, an object of the pre...

Claims

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Application Information

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IPC IPC(8): C08L21/00C08L71/02C08L45/02C08L91/06C08K13/06C08K9/06C08K7/24C08K3/22C08K5/09C08K3/04
CPCC08K2003/2296C08K2201/011C08K2201/014C08L21/00C08L2205/035C08L71/02C08L45/02C08L91/06C08K13/06C08K9/06C08K7/24C08K3/22C08K5/09C08K3/04
Inventor 贺世家杜航赵鸿宇
Owner ENN GRAPHENE TECH CO LTD