Compound carbon nanotube and rubber material and preparation method thereof

A technology of carbon nanotubes and composite materials, applied in the field of composite rubber, can solve problems such as lack of performance, difficulty in dispersion, and limited application range, etc., to achieve good dispersion performance and affinity, enhanced adhesion, and good reinforcement effect Effect

Inactive Publication Date: 2014-04-02
SUZHOU HUADONG RUBBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 nanotub

Method used

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Examples

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preparation example Construction

[0034] The present invention also includes a preparation method of a composite material of carbon nanotubes and rubber, comprising the following steps:

[0035] Step 1: Carboxylation of multi-walled carbon nanotubes (MWNTs)

[0036] Weigh multi-walled carbon nanotubes (MWNTs) raw materials, add hydrogen peroxide aqueous solution, ultrasonically disperse for 30-60 minutes, transfer to a reaction container, reflux at 80°C for two hours, transfer to another container and filter under reduced pressure, add Wash with deionized water repeatedly until the filtrate is neutral, then filter with a microporous membrane, put it in a vacuum drying oven and dry it for later use;

[0037] Add sulfuric acid / nitric acid mixed acid with a volume ratio of 3:1, ultrasonically disperse at 60°C for two hours, transfer to a reaction container, condense and reflux, transfer to another container and filter under reduced pressure, and wash repeatedly with deionized water until the filtrate is Neutral,...

Embodiment 1

[0054] Embodiment 1: prepare the toluene solution of HTPB / MWNTs-COOH

[0055] 0.5g of multi-walled carbon nanotubes (MWNTs) was made into a carboxylated multi-walled carbon nanotube mixture (HTPB / MWNTs-COOH) coated with hydroxyl-terminated polybutadiene through steps 1 and 2, and the mixture was dissolved in In 10ml of toluene, ultrasonically oscillated by an ultrasonic cleaner for 20 minutes and then left to stand to obtain a toluene solution of HTPB / MWNTs-COOH.

Embodiment 2

[0072] Example 2: Rubber composite of HTPB / MWNTs-COOH

[0073] 0.5g of multi-walled carbon nanotubes (MWNTs) was made into a rubber composite material of HTPB / MWNTs-COOH through the preparation process from step 1 to step 4. The rubber composite material was cut into standard samples for performance testing, and the electronic tensile machine was used to test its tensile properties;

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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 ...

Claims

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Application Information

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IPC IPC(8): C08L7/00C08L9/00C08L9/06C08K13/06C08K9/10C08K9/02C08K7/00C08K3/04C08K3/06C08K5/09C08K3/22C08K5/18C08K5/47B29B7/28B29C35/02
Inventor 孙明东
Owner SUZHOU HUADONG RUBBER
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