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A method for preparing graphene/rubber composites based on the combination of spray drying and hot press vulcanization

A technology of spray drying and composite materials, which is applied in the field of preparing graphene/rubber composite materials, can solve the problems of limiting graphene, etc., and achieve the effects of reducing pollution, simple process and high production efficiency

Active Publication Date: 2019-03-08
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention solves the problem that the existing graphene / rubber composite material is limited by the graphene raw material and the graphene is uniformly dispersed in the rubber matrix, and provides a method for preparing the graphene / rubber composite material based on the combination of spray drying and hot press vulcanization

Method used

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  • A method for preparing graphene/rubber composites based on the combination of spray drying and hot press vulcanization
  • A method for preparing graphene/rubber composites based on the combination of spray drying and hot press vulcanization
  • A method for preparing graphene/rubber composites based on the combination of spray drying and hot press vulcanization

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specific Embodiment approach 1

[0025] A kind of method of preparing graphene / rubber composite material based on the combination of spray drying and hot press vulcanization described in the present embodiment is specifically carried out according to the following steps:

[0026] 1. Preparation of graphene: use natural flake graphite as raw material, take an appropriate amount to sieve, take an appropriate amount of sieve, and then convert it into expanded graphite by microwave treatment for 5 minutes, and then add expanded graphite with a concentration of 10 mg / mL dodecylbenzene In the ethanol solution of sodium sulfonate, the expanded graphite is dissolved in the dispersion liquid by vigorous magnetic stirring at a stirring speed of 400 r / min, and the graphene is obtained by a liquid phase mechanical exfoliation method. The sheets of the original flake graphite are very tightly stacked. After treatment, a large number of holes appear between the sheets of the expanded graphite obtained. At this time, the gra...

specific Embodiment approach 2

[0036] A kind of method of preparing graphene / rubber composite material based on the combination of spray drying and hot press vulcanization described in the present embodiment is specifically carried out according to the following steps:

[0037] 1. Preparation of graphene: use natural flake graphite as raw material, take an appropriate amount to sieve, and after taking an appropriate amount of sieve, convert it into expanded graphite by microwave treatment for 8 minutes, and then add the expanded graphite into dodecylbenzenesulfonate with dispersant In the ethanol solution of sodium bicarbonate, the expanded graphite was dissolved in the dispersion liquid by vigorous magnetic stirring at a stirring speed of 600 r / min, and the graphene was obtained by the liquid phase mechanical exfoliation method. The sheets of the original flake graphite are very tightly stacked. After treatment, a large number of holes appear between the sheets of the expanded graphite obtained. At this tim...

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Abstract

The invention provides a spray-drying and hot-press vulcanization combination-based method for preparing a graphene / rubber composite material, and belongs to the technical field of graphene / rubber composite materials, aiming at solving the problems that an existing graphene / rubber composite material cannot use raw graphene without environment stress as filler and cannot be uniformly dispersed into nonpolar rubber by a simple process flow. The method comprises the following steps: 1, preparing a graphene dispersion liquid; 2, preparing graphene-rubber emulsion; 3, preparing graphene / rubber composite material powder by a spray-drying method; and 4, performing hot-press vulcanization with a flat plate to prepare the graphene / rubber composite material. The method can be widely applied to industrial production since pollution-free raw graphene is utilized as the raw material and can be uniformly dispersed into a non-polar rubber substrate.

Description

technical field [0001] The invention belongs to the technical field of graphene / rubber composite materials; in particular, it relates to a method for preparing graphene / rubber composite materials based on the combination of spray drying and hot press vulcanization. Background technique [0002] As we all know, polymer rubber is a strategically important material. In order to expand the practical range, improving the weak mechanical properties of pure rubber by inserting nano-sized fillers into rubber is the most commonly used method. Carbon black and silicon are the most widely used traditional fillers in the rubber industry. In recent years, graphene, as a new type of filling material, has attracted widespread attention due to its high specific surface area, excellent mechanical properties, high electron mobility, high thermal conductivity, and gas impermeability. Graphene is defined as a two-dimensional honeycomb lattice structure composed of only a single layer of carbo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L21/00C08L9/08C08K13/06C08K9/04C08K7/24C08K3/06C08K5/09C08K3/22C08K5/47C08J3/12C08J3/215B29C35/02
CPCB29C35/02C08J3/122C08J3/215C08J2321/00C08J2409/08C08K2003/2296C08L21/00C08L9/08C08K13/06C08K9/04C08K7/24C08K3/06C08K5/09C08K3/22C08K5/47
Inventor 李莹林在山徐帆赫晓东李宜彬
Owner HARBIN INST OF TECH
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