Compound carbon nanotube and rubber material and preparation method thereof

Abstract

The invention discloses a compound carbon nanotube and rubber material and a preparation method thereof. The compound material comprises the following components by mass: 100 parts of a mixed carbon nanotube and rubber material, 1-3 parts of stearic acid, 53-65 parts of carbon black, 5-8 parts of nano-zinc oxide, 1.5-2.5 parts of an anti-ageing agent D, 2-3.5 parts of an anti-ageing agent 4020, 0.4-0.8 part of a vulcanization accelerator CZ, 0.3-2 parts of a scorch retarder CTP and 2-3 parts of sulfur, wherein the mixed carbon nanotube and rubber material is a mixed material of 26 parts of an HTPB (hydroxyl-terminated polybutadiene)-coated carbon nanotube mixture and 74 parts of rubber, and the HTPB-coated carbon nanotube mixture is an HTPB-coated carboxylic multi-walled carbon nanotube. The preparation method comprises the following steps: rolling the mixed rubber material and the rubber, vulcanizing, plastifying, adding the materials, mixing, and vulcanizing to obtain the compound carbon nanotube and rubber material. Therefore, the compound carbon nanotube and rubber material has the advantages of good dispersity and stronger bonding force of a carbon nanotube and rubber interface.

Description

technical field [0001] The invention relates to the field of composite rubber, in particular to a composite material of carbon nanotubes and rubber and a preparation method thereof. Background technique [0002] Due to their unique structure and excellent physical and chemical properties, carbon nanotubes are widely used in polymers in order to improve the thermal conductivity, electrical conductivity and physical properties of polymers, but carbon nanotubes themselves have high surface free energy, which is easy to Agglomeration occurs, and it is not easy to disperse in the polymer matrix, which limits the scope of its application. [0003] General composite materials of carbon nanotubes and rubber are synthesized by carbon nanotubes, natural rubber and additives, and the rubber vulcanizate of carbon nanotubes is obtained through final vulcanization, such as the patent document "High-performance natural rubber vulcanization containing carbon nanotubes" The modified carbon ...

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Problems solved by technology

[0002] Due to their unique structure and excellent physical and chemical properties, carbon nanotubes are widely used in polymers in order to improve the thermal conductivity, electrical conductivity and physical properties of polymers, but carbon nanotubes themselves have high surface free energy, which is easy to Agglomeration occurs, and it is not easy to disperse in the polymer matrix, which limits the scope of its application

[0003] General composite materials of carbon nanotubes and rubber are synthesized by carbon nanotubes, natural rubber and additives, and the rubber vulcanizate of carbon nanotubes is obtained through final vulcanization, such as the patent document "High-performance natural rubber vulcanization containing carbon nanotubes" The modified carbon nanotube and rubber treatment method introduced in the application number of 201010139543.3, although certain carbon nanotube rubber products can be obtained, but there will be a great lack of performance, such as The agglomeration and entanglement of acid-treated carbon nanotubes in toluene still exist and are relatively serious, which has obvious limitations on the electrical and thermal conductivity and even the elongation of the product.