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Preparation method for oxidized graphene and bentonite modified rubber

A technology of graphene and bentonite, which is applied in the field of rubber materials, can solve the problems of low rubber strength, poor wear resistance, and poor compatibility, and achieve the effects of strengthening rubber, increasing strength, and improving compatibility

Inactive Publication Date: 2016-02-24
梅庆波
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem mainly solved by the present invention: aiming at the low strength, low modulus, poor wear resistance and fatigue resistance of the current unreinforced rubber, there is no practicability, and the reinforcing filler of rubber generally has poor compatibility with rubber. It is difficult to uniformly disperse in the rubber matrix during the process, which leads to the problem that the reinforcing effect of fillers on natural rubber is limited. A reinforcing filler using graphene oxide and bentonite as rubber is provided. There is a strong bond between bentonite and rubber. The interfacial bonding effect can improve its dispersion in the rubber matrix and its compatibility with the rubber matrix, and then achieve a good effect of strengthening the rubber. Adding graphene oxide to the rubber matrix can greatly increase the strength and wear resistance of rubber products , and gas barrier properties

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0023] First, add 100g of sodium bentonite to a 500mL beaker, then add 200mL of distilled water, stir and mix evenly to obtain a suspension, weigh 3g of trimethylhexadecylammonium bromide and add it to the suspension, at 65°C Stir for 1 h, let it cool down to room temperature naturally after the stirring is finished, and let the solution stand for stratification, remove the liquid in the upper layer to obtain a white flocculent, wash the precipitate with deionized water, and suction filter twice, and put the obtained precipitate into Dry in an oven at 75°C, take out after drying, grind, and sieve to obtain 400-mesh organic bentonite powder; take 5g of graphene oxide and disperse it in 250mL of deionized water, and perform ultrasonic dispersion at 500kW power for 40min to obtain a graphene oxide aqueous solution , add 20g of the above-mentioned organic bentonite powder and 1g of vinyltriethoxysilane to the aqueous solution, and carry out ultrasonic dispersion for 2h at a power o...

example 2

[0026]First, add 125g of sodium bentonite to a 500mL beaker, then add 250mL of distilled water, stir and mix evenly to obtain a suspension, weigh 4g of trimethylhexadecylammonium bromide and add it to the suspension, at 67°C Stir for 1.5h, let it cool down to room temperature naturally after stirring, and let the solution stand for stratification, remove the liquid in the upper layer to obtain a white flocculent, wash the precipitate with deionized water, and suction filter twice, and the obtained precipitate Put it in an oven at 80°C for drying, take it out after drying, grind it, and sieve it to get 450 mesh organic bentonite powder; take 5.5g of graphene oxide and disperse it in 250mL of deionized water, and ultrasonically disperse it at 650kW power for 45min to get graphite oxide Graphene oxide aqueous solution, add 25g of the organic bentonite powder and 2g of vinyltriethoxysilane prepared above to the aqueous solution, and carry out ultrasonic dispersion for 2.5h under th...

example 3

[0029] First, add 150g of sodium bentonite to a 500mL beaker, then add 300mL of distilled water, stir and mix evenly to obtain a suspension, weigh 5g of trimethylhexadecylammonium bromide and add it to the suspension, at 70°C Stir for 2h, let it cool down to room temperature naturally after stirring, and let the solution stand for stratification, remove the liquid in the upper layer to obtain a white flocculent, wash the precipitate with deionized water, and suction filter 3 times, put the obtained precipitate into Dry in an oven at 85°C, take out after drying, grind, and sieve to obtain 500-mesh organic bentonite powder; take 6g of graphene oxide and disperse it in 250mL of deionized water, and perform ultrasonic dispersion at 800kW power for 50min to obtain a graphene oxide aqueous solution , add 30g of the above-mentioned organic bentonite powder and 3g of vinyltriethoxysilane to the aqueous solution, and carry out ultrasonic dispersion for 3h at a power of 900kW to obtain a...

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Abstract

The invention discloses a preparation method for oxidized graphene and bentonite modified rubber, and belongs to the field of rubber materials. According to the method, oxidized graphene and bentonite are used as a reinforcing filler of the rubber; as a stronger interface binding effect exists between bentonite and the rubber, so that the dispersity of bentonite in a rubber matrix and the compatibility of the rubber matrix are improved, and accordingly, an excellent rubber reinforcement effect is realized; through the addition of oxidized graphene to the rubber matrix, the strength, the wearing resistance and the gas barrier property can be greatly improved.

Description

technical field [0001] The invention discloses a preparation method of rubber modified by graphene oxide and bentonite, belonging to the field of rubber materials. Background technique [0002] Carbon black is a traditional rubber reinforcing agent, which can greatly improve the performance of rubber products. In recent years, the oil crisis has caused the price of carbon black to rise continuously. In order to reduce production costs, obtain colorful rubber products and functional rubber products, and expand the use of rubber, different types of reinforcing agents such as calcium carbonate, silicate and metal oxides has become a hot research topic at present. [0003] Bentonite is a non-metallic mineral with montmorillonite as the main mineral component. Montmorillonite is a typical natural clay mineral with the advantages of high reserves, various types, low price, and rich structure. However, bentonite contains an indeterminate amount of neutral water molecules and exch...

Claims

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Application Information

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IPC IPC(8): C08L7/00C08K9/04C08K9/06C08K3/34C08K3/04
Inventor 梅庆波王志慧
Owner 梅庆波
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