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Graphene-based antioxidant and preparation method and application thereof

A graphene-based, antioxidant technology, applied in the field of graphene-based antioxidants and their preparation, can solve the problems of low thermal stability, easy migration and poor extraction resistance, and achieve improved thermal stability and production The effect of high efficiency and good thermal stability

Inactive Publication Date: 2017-06-20
DONGGUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Based on this, it is necessary to provide a graphene-based antioxidant and its preparation method and application for the problems of low thermal stability, easy migration and poor extraction resistance of traditional antioxidants.

Method used

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  • Graphene-based antioxidant and preparation method and application thereof
  • Graphene-based antioxidant and preparation method and application thereof
  • Graphene-based antioxidant and preparation method and application thereof

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preparation example Construction

[0041] see figure 1 , the preparation method of the graphene-based antioxidant of one embodiment, comprises the following steps:

[0042] S110. Using a mercapto coupling agent to modify the surface of graphene oxide to obtain modified graphene oxide.

[0043] In one embodiment, the mercapto coupling agent is at least one selected from 3-mercaptopropyltrimethoxysilane (KH-590) and 3-mercaptopropyltriethoxysilane (KH-580).

[0044] see further figure 2 , in one of the embodiments, the surface modification of graphene oxide using a mercapto coupling agent comprises the following steps:

[0045] S111. Disperse the graphene oxide in water to obtain a graphene oxide dispersion.

[0046] In one embodiment, the mass ratio of graphene oxide to water is 1:1000˜1:2000.

[0047] In one embodiment, the graphene oxide is dispersed in water by means of ultrasonic dispersion. The power of ultrasonic dispersion is 60W~120W. The time of ultrasonic dispersion is 1h~3h. Of course, in othe...

Embodiment 1

[0079] Take 0.1 g of graphene oxide and add it to 200 g of water, and ultrasonically disperse it for 1 h at a power of 60 W to obtain a graphene oxide dispersion. The pH value of the graphene oxide dispersion was adjusted to 3 with hydrochloric acid with a mass concentration of 5%. Then add 2 g of mercapto coupling agent KH590 therein, and obtain modified graphene oxide (GO-KH590) by magnetic stirring at 80° C. for 12 h. The structural formula of GO-KH590 is:

[0080]

[0081] The modified graphene oxide was filtered under reduced pressure to remove organic solvents and impurities, and then washed with 200 g of water and then washed with 50 mL of ethanol. The above washing operation was repeated three times. After washing, the product was put into a vacuum oven, and dried at 50° C. for 10 h to obtain a modified graphene oxide solid.

[0082] Get 0.1g of modified graphene oxide solid and 2g of 2-tert-butyl-6-(2-hydroxyl-3-tert-butyl-5-methylphenyl)-4-methylphenylacrylate, ...

Embodiment 2

[0086] Take 0.1 g of graphene oxide and add it to 100 g of water, and ultrasonically disperse it for 3 hours at a power of 120 W to obtain a graphene oxide dispersion. The pH of the graphene oxide dispersion was adjusted to 5 with hydrochloric acid with a mass concentration of 5%. 0.5 g of mercapto coupling agent KH580 was added thereto, and the modified graphene oxide (GO-KH580) was obtained by magnetic stirring at 60° C. for 6 h. The structural formula of GO-KH580 is:

[0087]

[0088] The modified graphene oxide was filtered under reduced pressure to remove organic solvents and impurities, and then washed with 200 g of water and then washed with 50 mL of ethanol. The above washing operation was repeated three times. After washing, the product was put into a vacuum oven, and dried at 70° C. for 6 hours to obtain a modified graphene oxide solid.

[0089] Take 0.1g of modified graphene oxide solid and 0.1g of 2-[1-(2-hydroxy-3,5-di-tert-pentylphenyl)ethyl]-4,6-di-tert-pen...

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Abstract

The invention relates to a graphene-based antioxidant and a preparation method thereof. A general structural formula of a graphene-based antioxidant is: in the formula, it is graphene oxide; R is wherein, R1, R2, R3 and R4 are alkyl groups. The preparation method of the above-mentioned graphene-based antioxidant comprises the following steps: using a mercapto coupling agent to modify the surface of graphene oxide to obtain modified graphene oxide; modifying graphene oxide, bisphenol monoacrylate compound and The catalyst is added in an organic solvent to react to obtain a graphene-based antioxidant. The above-mentioned graphene-based antioxidant has hindered phenol antioxidant groups and thioether groups that have synergistic antioxidant effects with hindered phenols, and graphene has unique antioxidant functions and gas barrier properties, so it has good anti-oxidation properties. Oxidation performance; and graphene oxide has good thermal stability, structural stability and migration resistance, thereby improving the thermal stability, migration resistance and extraction resistance of graphene-based antioxidants.

Description

technical field [0001] The invention relates to the technical field of material preparation, in particular to a graphene-based antioxidant and its preparation method and application. Background technique [0002] Adding antioxidants is the most effective and simple way to inhibit the aging of polymers, especially rubber materials. However, due to the small molecular weight of traditional antioxidants, there are disadvantages such as low thermal stability, easy migration and poor extraction resistance. This will cause the following two undesirable phenomena: one, during the processing of polymer materials, the antioxidant will be heated and volatilized; During the process, small molecule antioxidants will gradually migrate from the inside of the material to the surface, resulting in a large amount of physical loss. Both of these phenomena will directly lead to a significant decline in the mechanical properties of the material and a significant shortening of the service life...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/12C08K9/06C08K9/04C08K3/04C08L7/00
CPCC08K9/12C08K3/04C08K9/04C08K9/06C08L2201/08
Inventor 吴文剑兰善红范洪波柳鹏杨树颜蔡海宁朱志勇王梅凤
Owner DONGGUAN UNIV OF TECH
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