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Graphene oxide modified anti-ageing agent, anti-thermo-oxidative-aging rubber containing graphene oxide modified anti-ageing agent and preparation method

A graphene-modified and aged rubber technology, applied in the field of thermal-oxidative aging-resistant rubber and its preparation, and graphene oxide-modified antioxidants, can solve the problems of poor water-resistance extraction, reduced rubber properties, large filling amount, etc. Effects of migration, reduced dosage, enhanced interaction ability

Active Publication Date: 2019-08-13
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the thermo-oxidative aging phenomenon of the existing rubber and the problems that the traditional anti-aging agent has a large filling amount in the rubber, poor water extraction resistance, and a large amount of filling will reduce other properties of the rubber, the invention provides a graphene oxide modified anti-aging agent, Thermal and oxidative aging resistant rubber comprising same and preparation method thereof

Method used

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  • Graphene oxide modified anti-ageing agent, anti-thermo-oxidative-aging rubber containing graphene oxide modified anti-ageing agent and preparation method
  • Graphene oxide modified anti-ageing agent, anti-thermo-oxidative-aging rubber containing graphene oxide modified anti-ageing agent and preparation method
  • Graphene oxide modified anti-ageing agent, anti-thermo-oxidative-aging rubber containing graphene oxide modified anti-ageing agent and preparation method

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Embodiment 1

[0031] A modified graphene oxide anti-aging agent, prepared by reacting gamma-methacryloxypropyltrimethoxysilane, graphene oxide and 2-mercaptobenzimidazole, the graphene oxide has a purity of 98%, The thickness is 0.335nm, the carbon content is 48%, the oxygen content is 42%, and the sheet diameter is 10-20 μ m monolithic nano-graphene oxide, the preparation process is as follows:

[0032] (1) Use a mixture of water and ethanol with a volume ratio of 1:1 as a solvent, adjust the pH to 3 with hydrochloric acid, and add γ-methacryloxypropyltrimethoxysilane and graphite oxide with a mass ratio of 5:1 ene, heated to 85°C, the hydrolyzed γ-methacryloxypropyl trimethoxysilane and graphene oxide undergo dehydration condensation reaction, after reacting for 12 hours, wash with ethanol to obtain the intermediate product;

[0033] (2) Under nitrogen protection, with ethanol as a solvent, add the above-mentioned intermediate product and 2-mercaptobenzimidazole with a mass ratio of 1:2, ...

Embodiment 2

[0037] A graphene oxide modified anti-aging agent, prepared by reacting gamma-methacryloxypropyltriethoxysilane, graphene oxide and 2-mercaptomethylbenzimidazole, the graphene oxide is pure 97%, a thickness of 0.5nm, a carbon content of 49%, an oxygen content of 45%, and a single-sheet nano-graphene oxide with a sheet diameter of 30-50 μm. The preparation process is as follows:

[0038] (1) Use a mixture of water and ethanol with a volume ratio of 2:1 as a solvent, adjust the pH to 3 with hydrochloric acid, add γ-methacryloxypropyltriethoxysilane with a mass ratio of 8:1 and Graphene is heated to 90°C, and the hydrolyzed γ-methacryloxypropyltriethoxysilane and graphene oxide undergo a dehydration condensation reaction. After reacting for 16 hours, they are washed with ethanol to obtain the intermediate product;

[0039] (2) Under nitrogen protection, with ethanol as a solvent, add the above-mentioned intermediate product and 2-mercaptomethylbenzimidazole with a mass ratio of 1...

Embodiment 3

[0043] A modified graphene oxide anti-aging agent, prepared by the reaction of vinyl triethoxysilane, graphene oxide and 4-mercapto-acetamidodiphenylamine, the graphene oxide has a purity of 98% and a thickness of 1.0nm , a carbon content of 50%, an oxygen content of 50%, and a sheet diameter of 20-30 μm single-layer nano-graphene oxide, the preparation process is as follows:

[0044] (1) Use a mixture of water and ethanol with a volume ratio of 3:1 as a solvent, adjust the pH to 4 with hydrochloric acid, add vinyltriethoxysilane and graphene oxide with a mass ratio of 6:1, and heat to 60°C, The hydrolyzed vinyltriethoxysilane and graphene oxide undergo a dehydration condensation reaction, and after reacting for 24 hours, wash with ethanol to obtain the intermediate product;

[0045] (2) Under nitrogen protection, with ethanol as a solvent, add the above-mentioned intermediate product and 4-mercapto-acetamidodiphenylamine with a mass ratio of 1:1, and then add triethylamine (T...

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Abstract

The invention relates to the technical field of graphene rubber composite materials, in particular to a graphene oxide modified anti-ageing agent, anti-thermo-oxidative-aging rubber containing the graphene oxide modified anti-ageing agent and a preparation method. Organosilane containing carbon-carbon double bonds and graphene oxide are subjected to a dehydration condensation reaction to obtain anintermediate product, and the intermediate product and an anti-ageing agent containing mercapto groups are subjected to a click reaction to prepare the graphene oxide modified anti-ageing agent. Thegraphene oxide modified anti-ageing agent, can effectively reduce the using amount of the anti-ageing agent and is difficult to draw out, and the anti-thermo-oxidative-aging rubber prepared from the graphene oxide modified anti-ageing agent is high in mechanical strength and high in thermo-oxidative aging resistance.

Description

technical field [0001] The invention relates to the technical field of graphene rubber composite materials, in particular to a graphene oxide modified anti-aging agent, a heat-oxidative aging-resistant rubber containing the same and a preparation method. Background technique [0002] With the rapid improvement of the rubber industry, more and more rubber products are used in various fields such as automobiles, valves, conveyor belts, rubber shoes and sealing products. However, rubber products gradually age under the environment of use, so that they completely lose their original excellent performance. For example, nitrile rubber is synthesized from acrylonitrile and butadiene, and its chemical properties generally change due to thermo-oxidative aging. The vulcanized rubber reacts with oxygen to break and reorganize the internal molecular chain of the vulcanized rubber, and its internal structure changes. changes, thereby changing its performance and degrading its performanc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/04C08L71/02C08K13/06C08K9/02C08K9/06C08K5/378C08K5/37
CPCC08L9/04C08L2201/08C08L71/02C08K13/06C08K9/02C08K9/06C08K5/378C08K5/3725
Inventor 赵雄燕闫思梦
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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