Preparation method of graphene/styrene-butadiene rubber composite with functional characteristic

A technology of styrene-butadiene rubber and composite materials, applied in rubber insulators, organic insulators, etc., can solve the problems of electrical conductivity, wear resistance, and low strength, and achieve excellent electrical conductivity, good dispersion, and reduced friction coefficient.

Active Publication Date: 2018-06-22
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its physical properties, processing properties and use properties are very similar to natural rubber, its price is cheap and its toughness is good, but its electrical conductivity, wear resistance and strength are very low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] (1) Graphene nanosheets with a mass of 0.1 g were added to 60 mL polyvinylpyrrolidone (PVP) solution (1 mg / mL) and subjected to ultrasonic treatment for 10 min to prepare a graphene dispersion;

[0014] (2) Add the graphene dispersion to 10 g of styrene-butadiene latex at 25 o Under the condition of C, sonicate for 20 minutes to obtain the mixed solution;

[0015] (3) Pour the obtained mixture into the mold, o C in a drying oven for 30 hours to obtain a composite material.

Embodiment 2

[0017] (1) 0.5 g of graphene nanosheets was added to 60 mL of polyvinylpyrrolidone (PVP) solution (2 mg / mL) and subjected to ultrasonic treatment for 20 min to prepare a graphene dispersion;

[0018] (2) Add the graphene dispersion to 20 g of styrene-butadiene latex at 25 o Under the condition of C, stir mechanically for 20min to obtain the mixed solution;

[0019] (3) Pour the obtained mixed liquid into the mold, at 40 o C in a drying oven for 35 hours to obtain a composite material.

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PUM

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Abstract

The invention relates to a preparation method of a graphene / styrene-butadiene rubber composite with a functional characteristic and aims at compounding directionally-arranged graphene nanosheets intostyrene-butadiene rubber so as to provide excellent conductivity, wear resistance and the like. The material provided by the invention is of a double-layer structure, one layer is a functional layer mainly formed by directional arrangement of the graphene nanosheets, and the other layer is an elastic insulation layer mainly made of the styrene-butadiene rubber. The preparation method comprises thesteps: (1) carrying out ultrasonic treatment on the graphene nanosheets in a polyvinylpyrrolidone (PVP) solution to obtain a graphene dispersion solution; (2) adding the graphene dispersion solutioninto styrene-butadiene latex to carry out ultrasonic treatment or mechanical stirring; and (3) pouring the mixed solution obtained in the step (2) into a die, and carrying out solidification at a certain temperature to obtain a final composite. The composite is low in graphene nanosheet addition amount, excellent in conductivity and wear resistance in a direction parallel to the directional arrangement direction of the graphene nanosheets, good in insulation property in a direction vertical to the arrangement direction of the graphene nanosheets, soft and foldable and can be used in the fieldsuch as electrostatic protection and electromagnetic wave shielding.

Description

technical field [0001] The invention belongs to the field of composite material science and technology, and in particular relates to a preparation method of a multifunctional graphene / styrene-butadiene rubber composite material. Background technique [0002] Graphene is a two-dimensional material, due to its unique properties, for example: graphene has a theoretical Young's modulus as high as 1060 GPa, 20000 cm 2 V -1 the s -1 The carrier mobility and 2630 m 2 / g specific surface area. Therefore, for rubber, graphene is an ideal functional filler, which can be used to improve the electrical conductivity and wear resistance of rubber materials. [0003] SBR is the largest general-purpose synthetic rubber variety in the world. Its physical properties, processing properties and use properties are very similar to natural rubber. It is cheap and has good toughness, but its electrical conductivity, wear resistance and strength are very low. Due to the high conductivity and e...

Claims

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Application Information

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IPC IPC(8): C08L9/08C08K9/08C08K9/00C08K7/00H01B3/28
CPCC08K7/00C08K9/00C08K9/08C08K2201/001C08K2201/011H01B3/28C08L9/08
Inventor 毛健王飞
Owner SICHUAN UNIV
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