Rubber antioxidant-reduced and modified graphene oxide, as well as preparation method and application thereof

A technology of rubber anti-aging agent and stone oxide, which is applied in the field of reduction of rubber additives and modified graphene oxide and its preparation, can solve the problems of difficulty in uniform dispersion of graphene, difficulty in exerting unique advantages, and weak bonding of rubber interface, etc., to achieve improved Anti-wet skid, avoid migration and volatilization, improve anti-aging effect

Inactive Publication Date: 2017-06-16
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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, graphene has been mainly modified by adding organic substances to improve its dispersion and interfacial bonding in rubber, but the modification process is complex, costly, and polluting, and the effect is not obvious

Method used

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  • Rubber antioxidant-reduced and modified graphene oxide, as well as preparation method and application thereof
  • Rubber antioxidant-reduced and modified graphene oxide, as well as preparation method and application thereof
  • Rubber antioxidant-reduced and modified graphene oxide, as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 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); add 600mg of rubber antioxidant N-(1,3-dimethyl)butyl-N'-phenyl to Phenylenediamine (anti-aging agent 4020) was dissolved in 120ml of acetone and added to the above GO aqueous dispersion. The reaction was stirred at 80°C for 4.5 hours. The reaction product was washed with ethanol and placed in a vacuum oven at 60°C. Dry to constant weight to obtain antioxidant 4020 modified graphene (4020-G). In order to better illustrate the characteristics of the present invention, the graphene reduced by hydrazine hydrate was prepared according to the existing conventional method and named HH-G for comparison.

[0034] The infrared spectra (FTIR) of 4020-G and GO prepared in this example are as follows figure 1 Shown. It can be seen from the figure that compared with the FTIR spectrum of GO, the spectrum of 4020-G is at 1729 cm -1 , 1396 cm -1...

Embodiment 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-phenyl-N'-cyclohexyl p-phenylenediamine (antioxidant 4010) In 60ml of toluene and added to the above GO aqueous dispersion, the reaction was stirred at 60°C for 8 hours. After the reaction product was washed with ethanol, it was placed in a vacuum oven and dried to constant weight at 50°C to obtain the antioxidant 4010 modified graphene (4010-G).

[0039] FTIR and 13 C NMR results show that compared with GO, the oxygen-containing functional group peak intensity in 4010-G is significantly reduced, and organic peaks appear on the spectrum, indicating that antioxidant 4010 can effectively reduce GO, and some antioxidants are loaded on it. The reduced graphene oxide surface.

[0040] The 4010-G and HH-G prepared in this example were compounded with SBR to prepare a rubber composite material. The f...

Embodiment 3

[0042] Disperse 150mg of graphite oxide into 100ml of deionized water and peel off ultrasonically to form an aqueous dispersion of graphene oxide (GO); 300mg of rubber antioxidant N-isopropyl-N'-phenyl-p-phenylenediamine (antioxidant 4010NA) Dissolve it in 20ml of absolute ethanol and add it to the GO aqueous dispersion. Stir and react at 100°C for 1 hour. After washing with ethanol, the reaction product is placed in a vacuum oven and dried at 55°C to a constant weight. Obtain the antioxidant 4010NA modified graphene (4010NA-G).

[0043] FTIR and XPS showed that the oxygen-containing functional groups in 4010NA-G were significantly reduced compared to GO, indicating that the antioxidant 4010NA can effectively reduce GO.

[0044] The 4010NA-G and HH-G prepared in this example are compounded with SBR to prepare a rubber composite material. The formula is the same as in Example 1, except that the antioxidant 4020 is replaced with 4010NA, while ensuring that all formulas contain 4010NA...

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Abstract

The invention discloses rubber antioxidant-reduced and modified graphene oxide, as well as a preparation method and application thereof. According to the method, graphene oxide can be reduced and modified only at the same time through one-step reaction, and the method specifically comprises the following steps: mixing the graphene oxide with water, and carrying out ultrasonic stripping, thereby obtaining graphene oxide aqueous dispersion; mixing a rubber adjuvant solution with the graphene oxide aqueous dispersion, and carrying out heating stirring, thereby obtaining the rubber antioxidant-modified graphene oxide. According to the preparation method, a reducing agent is nontoxic and environmentally-friendly; the method is simple and feasible; the reaction conditions are mild; the obtained graphene oxide is low in oxygen-containing functional group content and high in conjugation degree; part of an antioxidant is grafted to the surface of graphene, so that uniform dispersion of the graphene in rubber can be promoted, and the interface bonding effect on a rubber matrix can be enhanced; furthermore, migration and volatilization of the antioxidant can be avoided, and the interaction efficiency of the antioxidant is improved; therefore, the performance of a rubber/graphene composite material is improved. A new opportunity and a new way for green and macroscopic quantity preparation of the graphene and obtaining of a high-performance rubber/graphene nano composite material are supplied.

Description

Technical field [0001] The invention belongs to the field of material preparation, and specifically relates to a rubber auxiliary agent reduction and modified graphene oxide, and a preparation method and application thereof. Background technique [0002] Graphene is a two-dimensional conjugated nanomaterial composed of a single layer of carbon atoms. It has ultra-high mechanics and excellent thermal and electrical conductivity. Due to its unique chemical structure and excellent comprehensive properties, graphene has become a hot research topic in the current material field, and has attracted widespread attention in the fields of new energy, biotechnology, new materials and other fields. Graphene is generally obtained by reduction of graphene oxide, and its main preparation methods include chemical reduction, solvothermal reduction, and photocatalytic reduction. Among them, the chemical reduction method is one of the most promising methods for large-scale preparation of graphene ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09C1/46C09C3/08C08K9/04C08K3/04C08L9/06C08L7/00
CPCC09C1/46C01P2006/22C08K3/04C08K9/04C08K2201/014C09C3/08C08L9/06C08L7/00
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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