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A kind of graphene/silicon dioxide/natural rubber composite material and its preparation method and application

A technology of natural rubber and silica, applied in the field of rubber materials, can solve the problems of easy precipitation, poor dispersion of white carbon black, and poor dispersibility

Active Publication Date: 2022-03-01
SHANDONG OBO NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the prior art discloses various methods such as solution synthesis or in-situ polymerization, the dispersibility of white carbon black in water is very poor, and graphene has good dispersibility in water, so the solution polymerization method is adopted to synthesize graphene and white carbon black When making composite materials such as silica, the dispersibility of silica in water is poor, and it is easy to precipitate

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  • A kind of graphene/silicon dioxide/natural rubber composite material and its preparation method and application
  • A kind of graphene/silicon dioxide/natural rubber composite material and its preparation method and application
  • A kind of graphene/silicon dioxide/natural rubber composite material and its preparation method and application

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preparation example Construction

[0063] The present invention also provides a kind of preparation method of graphene / silicon dioxide / natural rubber composite material, comprises the following steps:

[0064] 1) After the graphene oxide aqueous solution and the silica sol are ultrasonically dispersed, a dispersion is obtained;

[0065] 2) After ultrasonically dispersing the dispersion obtained in the above steps and the natural rubber again, a mixed slurry is obtained;

[0066] 3) after reacting the mixed slurry obtained in the above steps and reducing agent, obtain graphene / silica sol / natural rubber composite liquid;

[0067] 4) After the graphene / silica sol / natural rubber composite liquid obtained in the above steps is demulsified, a graphene / silica / natural rubber composite material is obtained.

[0068] The present invention is to the selection, composition and structure of the material in the above-mentioned preparation method, and corresponding optimal principle, and the selection, composition and struct...

Embodiment 1

[0102] Take 10g of graphene oxide, add water to dilute to 3‰, and ultrasonically stir for 1h;

[0103] Add 50 ml of silica sol (40% solid content) dropwise to the graphene oxide slurry at a rate of 10 ml / min, and ultrasonically stir for 1 hour after the addition, to obtain a mixed solution of graphene oxide and silica sol;

[0104] Then the mixed solution of graphene oxide and alkaline silica sol was added dropwise in 150g natural rubber latex with the dropping speed of 15ml / min. Continue ultrasonic stirring for 1 h after the dropwise addition;

[0105] Move the prepared sample to an oil bath, add 10 g of hydrazine hydrate, and react for 24 hours. Add demulsifier dilute sulfuric acid or acetic acid after 24h to demulsify. After breaking the emulsion, it is washed 4 to 6 times by means of suction filtration, and after the washing is completed, it is dried in a vacuum oven to obtain a graphene / silicon dioxide / natural rubber composite material.

[0106] The graphene / silica / nat...

Embodiment 2

[0116] Take 10g of graphene oxide, add water to dilute to 3‰, and ultrasonically stir for 1h;

[0117] Add 100 ml of silica sol (40% solid content) dropwise to the graphene oxide slurry at a dropping rate of 10 ml / min, and ultrasonically stir for 1 h after the addition is complete. Obtain the mixed solution of graphene oxide and silica sol;

[0118] Then the mixed solution of graphene oxide and alkaline silica sol was added dropwise in 150g natural rubber latex with the dropping speed of 15ml / min. Continue ultrasonic stirring for 1 h after the dropwise addition;

[0119]Move the prepared sample to an oil bath, add 10 g of hydrazine hydrate, and react for 24 hours. Add demulsifier dilute sulfuric acid or acetic acid after 24h to demulsify. After breaking the emulsion, it is washed 4 to 6 times by means of suction filtration, and after the washing is completed, it is dried in a vacuum oven to obtain a graphene / silicon dioxide / natural rubber composite material.

[0120] The g...

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Abstract

The invention provides a graphene / silica / natural rubber composite material, comprising graphene, silicon dioxide and natural rubber; the silica particles are attached to the graphene sheet, and the graphene sheet The layers are embedded in the network of the natural rubber. In the present invention, graphene raw materials, silicon dioxide raw materials and natural rubber are first compounded to obtain a graphene / silicon dioxide / natural rubber composite material, in which silicon dioxide particles are attached to graphene sheets, and graphene sheets The layer is embedded in the network of natural rubber, so as to achieve the uniform dispersion of graphene and silica in natural rubber, and then use it in rubber composite materials, which can improve the static conductivity of tires, reduce rolling resistance, and improve tire performance. tear performance. Moreover, the preparation method provided by the invention is simple and practical, more practical, and suitable for industrialized large-scale production applications.

Description

technical field [0001] The invention belongs to the technical field of rubber materials, and relates to a graphene / silica / natural rubber composite material and its preparation method and application, especially to a graphene / silica / natural rubber composite material and its preparation method. Applications in rubber composite matrices. Background technique [0002] Graphene is a new material with a single-layer sheet structure composed of carbon atoms. It is a planar film composed of carbon atoms with sp2 hybrid orbitals forming a hexagonal honeycomb lattice, a two-dimensional material with a thickness of only one carbon atom. Because graphene has many excellent physical and chemical properties, it is widely used in energy storage materials, environmental engineering, and sensitive sensing. It is called "black gold" or "king of new materials", and has broad potential application prospects. At present, it has become the focus of attention and research hotspot all over the wo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L7/00C08K3/36C08K3/04C08K9/12
CPCC08K3/36C08K3/042C08K9/12C08K2201/011C08K2201/003C08L2201/04C08L7/00
Inventor 盖东杰赵永彬赵新新马立军
Owner SHANDONG OBO NEW MATERIAL CO LTD
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