Rubber chemical reduced and modified graphene oxide as well as preparation method and application thereof

A technology of rubber additives and oxide stone, applied in graphene, chemical instruments and methods, inorganic chemistry, etc., can solve problems such as difficulty in exerting unique advantages, difficulty in dispersing graphene evenly, and weak bonding at the rubber interface, avoiding migration and Volatile, improve wet skid resistance, improve aging resistance

Active Publication Date: 2017-04-26
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, because graphene is difficult to disperse uniformly in rubber and is weakly bonded to the rubber interface, its unique advantages are difficult to exert
In order to solve the above problems, so far, graph

Method used

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  • Rubber chemical reduced and modified graphene oxide as well as preparation method and application thereof
  • Rubber chemical reduced and modified graphene oxide as well as preparation method and application thereof
  • Rubber chemical reduced and modified graphene oxide as well as preparation method and application thereof

Examples

Experimental program
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Example Embodiment

[0032] Example 1

[0033] Disperse 300mg of graphite oxide into 300ml of deionized water and peel off ultrasonically to form an aqueous dispersion of graphene oxide (GO); dissolve 600mg of rubber vulcanization accelerator N-cyclohexyl-2-benzothiazole sulfenamide (accelerator CZ) In 120ml of absolute ethanol, and added to the GO aqueous dispersion, stirred at 90 ℃ for 3 hours, the reaction product was washed with ethanol, placed in a vacuum oven, dried to constant weight at 50 ℃, promoted CZ modified graphene (CZ-G). In order to better illustrate the characteristics of the present invention, graphene reduced by hydrazine hydrate was prepared according to existing conventional methods, and named HH-G for comparison.

[0034] The infrared spectra (FTIR) of CZ-G, HH-G and GO prepared in this example are as follows figure 1 Shown. As can be seen from the figure, comparing the FTIR spectra of GO, the spectra of CZ-G and HH-G are at 1729 cm -1 , 1418 cm -1 , 1226 cm -1 , 1056 cm -1 The ...

Example Embodiment

[0037] Example 2

[0038] Disperse 200mg of graphite oxide into 400ml of deionized water and peel off ultrasonically to form an aqueous dispersion of graphene oxide (GO); dissolve 600mg of rubber antioxidant N,N'-diphenylpropylenediamine (antioxidant DPD) in 60ml Toluene, and added to the GO aqueous dispersion, stirred at 60℃ for 2, 5, 8 hours, the reaction product was washed with ethanol, placed in a vacuum oven, dried to constant weight at 50℃, to obtain Anti-aging agent DPD modified graphene (DPD-G).

[0039] FTIR and 13 C NMR results show that the oxygen-containing functional groups in DPD-G are significantly reduced compared to GO, indicating that DPD can effectively reduce GO.

[0040] The DPD-G and HH-G prepared in this example are compounded with SBR to prepare a rubber composite material. The formula is the same as that in Example 1, except that the antioxidant 4020 is replaced with DPD, and the DPD content in all the formulas is guaranteed The numbers are the same. The r...

Example Embodiment

[0041] Example 3

[0042] Disperse 300mg of graphite oxide into 200ml of deionized water and peel off ultrasonically to form an aqueous dispersion of graphene oxide (GO); dissolve 300mg of rubber antioxidant N-tert-butyl-2-benzothiazole sulfenamide (accelerator NS) In 60ml of acetone and added to the above GO aqueous dispersion, the reaction was stirred at 60°C for 1 hour. After the reaction product was washed with ethanol, it was placed in a vacuum oven and dried to constant weight at 60°C to obtain an antioxidant. NS modified graphene (NS-G).

[0043] FTIR and XPS showed that the oxygen-containing functional groups in NS-G were significantly reduced compared to GO, indicating that NS can effectively reduce GO.

[0044] The NS-G and HH-G prepared in this example are compounded with SBR to prepare a rubber composite. The formula is the same as in Example 1, except that the accelerator CZ is replaced with NS, while ensuring that all formulas contain NS The numbers are the same. The...

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Abstract

The invention discloses rubber chemical reduced and modified graphene oxide as well as a preparation method and an application thereof. The graphene oxide can be simultaneously reduced and modified just by conducting a reaction in one step; and specifically, the rubber chemical modified graphene is prepared by the following steps: mixing graphite oxide and water, and conducting ultrasonic exfoliation so as to obtain graphene oxide water dispersion liquid; mixing a rubber chemical solution with the graphene oxide water dispersion liquid, and conducting heating and stirring so as to obtain the rubber chemical modified graphene. According to the invention, a reducing agent is non-toxic and environment-friendly, the method is simple and easy to implement and reaction conditions are mild; and the prepared graphene is low in content of an oxygen-containing functional group in surface and high in conjugation degree; some rubber chemicals are chemically grafted on the surface of the graphene, so that the uniform dispersion of the graphene in rubber is promoted and an interface bonding action between the graphene and the rubber matrix is enhanced, and in addition, the migration and volatilization of the rubber chemicals are prevented and the action efficiency of the rubber chemicals is improved, so that the performance of a rubber/graphene composite material is improved. The invention provides a new opportunity and a new way for the green mass preparation of the graphene and for the preparation of the high-performance rubber/graphene nano composite material.

Description

technical field [0001] The invention belongs to the field of material preparation, and in particular relates to a rubber auxiliary agent reducing and modifying graphene oxide and its preparation method and application. Background technique [0002] Graphene is the latest development and a revolutionary nanomaterial, first discovered in 2004, is a two-dimensional conjugated structure composed of a single layer of carbon atoms, with ultra-high mechanical properties and excellent thermal conductivity, electrical conductivity, etc. characteristic. Based on its unique chemical structure and excellent comprehensive properties, graphene has attracted widespread attention in the fields of new energy, biotechnology, and new materials. Graphene is generally obtained by reduction of graphene oxide, and its main preparation methods include chemical reduction method, solvothermal reduction method, chemical vapor deposition method, photocatalytic reduction method, etc. Among them, the c...

Claims

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Application Information

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IPC IPC(8): C08K9/04C08K3/04C08L9/06C08L7/00C01B32/19C01B32/194
CPCC08K3/04C08K9/04C08K2201/001C08L9/06C08L7/00
Inventor 贾志欣钟邦超董焕焕林静罗远芳贾德民
Owner SOUTH CHINA UNIV OF TECH
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