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Preparation method of graphene-rubber composite

A technology of rubber compound and graphene, which is applied in the field of preparation of graphene rubber compound, can solve problems such as difficulty in preparing nanocomposite materials, affecting graphene performance, destroying graphene crystal structure, etc., and achieves simple and easy process, weakened Good interaction force and adsorption effect

Inactive Publication Date: 2017-01-04
QINGDAO DT NANO TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method destroys the crystal structure of graphene and greatly affects the performance of graphene itself, making it difficult to prepare high-performance nanocomposites

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 223g of graphene was put into 20000g of deionized water, and homogenized twice by a homogenizer to obtain a graphene dispersion with a mass fraction of 1.1%. The above-mentioned graphene dispersion was mixed ultrasonically, and 50 g of natural latex was slowly added while mixing within 2 hours to obtain a mixture. Natural rubber latex becomes small colloidal particles under the action of small graphene particles. The resulting mixture was passed through a sieve, and the resulting micelles were collected. Put the rubber particles in an oven, adjust to 180°C, and dry at high temperature for 0.5h until the solvent is removed to obtain a graphene composite rubber with high adsorption.

Embodiment 2

[0023] The graphene of 223g is put into the dehydrated alcohol of 10000g, is homogenized twice by homogenizer, obtains the graphene dispersion liquid that mass fraction is 2.2%. Carry out homogenization treatment to above-mentioned graphene dispersion liquid, add 100g liquid styrene-butadiene rubber slowly while homogenizing within 0.5h. The styrene-butadiene rubber is formed into small colloidal particles under the action of small graphene particles, and the obtained mixture is passed through a sieve to collect the obtained colloidal particles. Put the rubber particles in a drying oven, adjust the drying temperature to 60°C and dry for 90 hours at a low temperature until the solvent is removed to obtain a graphene composite rubber with high adsorption.

Embodiment 3

[0025] Put 223g of graphene into 10000g of deionized water, and homogenize twice through a homogenizer to obtain a graphene dispersion with a mass fraction of 2.2%. The above-mentioned graphene dispersion was stirred by a stirrer, and 90g of natural rubber latex was slowly added while stirring within 2h. The latex becomes small colloidal particles under the action of small graphene particles. The resulting solid-liquid mixture is passed through a sieve, and the resulting colloidal particles are collected. The colloidal particles were spray-dried at 150°C for 0.5h until the solvent was removed to obtain a highly absorbent graphene composite rubber.

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Abstract

The invention discloses a preparation method of a graphene-rubber composite. The method comprises the following steps: dispersing graphene in a dispersing agent to prepare a dispersion solution; adding latex into the dispersion solution to obtain a mixture; and drying the mixture. Mechanical mixing and ultrasonic agitation are utilized to prepare the graphene-latex mixture. The prepared high-adsorptivity graphene-rubber composite has communicating three-dimensional channels inside, thereby reducing the graphene interlaminar interaction force, and reducing the phenomenon of interlaminar superposition; and thus, the graphene is uniformly dispersed in the rubber without easily aggregating, and the graphene structure can not be destroyed, thereby maintaining the properties of the graphene material. The graphene-rubber composite has very high oil absorption number, and has the property of adsorbing heavy metal ions and organic pollutants in a water phase.

Description

technical field [0001] The invention belongs to the technical field of composite material preparation, and more specifically relates to a preparation method of a graphene rubber compound. Background technique [0002] The unique physical and chemical properties of graphene make it applicable to increasingly urgent and efficient oil absorption and sewage treatment. Large specific surface area, high thermal conductivity and electrical conductivity, and excellent mechanical properties enable graphene to be added to polymers as functional fillers or additives to improve the performance of polymers, thereby preparing high-performance nano composite material. However, in the application process of graphene, it is found that there are strong Van der Waals force or hydrogen bond light interaction in the graphene sheet structure, which makes it very easy to agglomerate and cannot be uniformly and stably dispersed. Usually, some organic functional groups such as carboxyl, hydroxyl, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/02C08L9/00C08L9/06C08L9/02C08K3/04
CPCC08K3/04C08L7/02C08L9/06
Inventor 萧小月徐燕王忠强刘雪华
Owner QINGDAO DT NANO TECH CO LTD
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