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Method for preparing graphene oxide/white carbon black/rubber nanocomposite by mechanical blending

A rubber nano-composite material technology is applied in the field of preparation of graphene oxide/silica/rubber nano-composite materials, which can solve the problems of being unable to meet the requirements of green environmental protection, reducing tear resistance, increasing rolling resistance, etc., and achieving cost Low, achieve large-scale industrial production, easy to achieve the effect of large-scale industrial production

Active Publication Date: 2014-11-05
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The usual practice is to use a certain amount of carbon black to improve the wear resistance of rubber materials on the basis of white carbon black filling, but this often requires a higher amount of carbon black, and it will increase the rolling resistance of the rubber material and reduce the wear resistance. The tear performance is reduced at the cost, and at the same time it cannot meet the requirements of green environmental protection

Method used

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  • Method for preparing graphene oxide/white carbon black/rubber nanocomposite by mechanical blending
  • Method for preparing graphene oxide/white carbon black/rubber nanocomposite by mechanical blending
  • Method for preparing graphene oxide/white carbon black/rubber nanocomposite by mechanical blending

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Weigh 1 g of graphite oxide, add it to 10 kg of deionized water, and ultrasonically disperse it at a power of 0.1 kw for 10 min to prepare a graphene oxide hydrosol with a solid content of 0.01%. Weigh 1g of precipitated white carbon black and 0.01g of bis-(γ-triethoxysilylpropyl)-tetrasulfide, add them to the above water sol, and stir for 30min at a stirring speed of 50r / min to obtain Graphene oxide / silica hydrosol. The above-mentioned graphene oxide / white carbon black hydrosol and 20kg of styrene-butadiene latex with a solid content of 10% were stirred and dispersed for 12 hours at a stirring speed of 50r / min to obtain stable graphene oxide / white carbon black / styrene-butadiene rubber Complex emulsion. Add the above composite emulsion to the calcium chloride solution with a mass concentration of 1% under stirring for flocculation, and the stirring speed is 50r / min, until no new flocs are produced in the mixed solution, and the graphite oxide obtained by flocculation ...

Embodiment 2

[0036] Weigh 20g of graphite oxide, add it into 100g of deionized water, and disperse it ultrasonically for 6h at a power of 1000kw, while monitoring the system temperature. If the system temperature exceeds 80°C, first suspend the ultrasonic operation, and move the mixture system to 500 r / Min stirring, stirring for 30min, after the temperature of the system was lowered, the ultrasonic operation was continued, and then a graphene oxide hydrosol with a solid content of 20% was obtained. Weigh 380g of precipitated white carbon black and 190g of bis-(γ-triethoxysilylpropyl)-disulfide, add them to the above water sol, and ultrasonically disperse for 6h under the power of 1000kw, while monitoring the system temperature, If the system temperature exceeds 80°C, first suspend the ultrasonic operation, move the mixture system to 500 r / min stirring, stir for 30 minutes, and then continue the ultrasonic operation after the system temperature is lowered, and then obtain graphene oxide / whi...

Embodiment 3

[0039]Weigh 5g of graphite oxide, add it to 500g of deionized water, and disperse it ultrasonically for 2 hours at a power of 300kw, while monitoring the temperature of the system. If the temperature of the system exceeds 80°C, first suspend the ultrasonic operation, and move the mixture system to 300 r / Under stirring for 1 min, stir for 15 min to lower the temperature of the system, then continue the ultrasonic operation, and then obtain a graphene oxide hydrosol with a solid content of 1%. Weigh 70g of precipitated white carbon black and 5.6g of bis-(γ-triethoxysilylpropyl)-tetrasulfide, add them to the above water sol, ultrasonically disperse for 2 hours at a power of 300kw, and monitor the system temperature at the same time , if the system temperature exceeds 80°C, first suspend the ultrasonic operation, move the mixture system to 500 r / min stirring, stir for 30 minutes, and then continue the ultrasonic operation after the system temperature is lowered, and then obtain gr...

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Abstract

A method for preparing a graphene oxide / white carbon black / rubber nanocomposite by mechanical blending belongs to the composite material field. In the graphene oxide / white carbon black / rubber composite prepared by the method provided by the invention, because graphene and white carbon black are inserted with each other, the self-aggregation of the two fillers is effectively suppressed, and thus a composite having high dispersion, high stripping and nanoscale dispersion is obtained. Not only while the composite has higher modulus and lower rolling resistance, but also the wear resistance of a rubber material is substantially improved, and the modulus and tear resistance of the composite are further improved; at the same time, because of the lamellar structure and good self-recovery capability of the graphene oxide, the rubber material is also imparted with good gas barrier performance and self-healing capability, and the nanocomposite has the incomparable advantages to any traditional fillers. The method provided by the invention is simple and easy to implement, low in cost and easy to industrialize, has wide suitability and better economic benefits and social benefits.

Description

technical field [0001] The present invention relates to a preparation method of graphene oxide / white carbon black / rubber nano-composite material with high exfoliation, high dispersion and strong interfacial bonding, in particular to the combination of emulsion compounding and flocculation process, or the combination of emulsion compounding and spray drying process, and Mechanical blending method to prepare graphene oxide / silica / rubber nanocomposites. Background technique [0002] In the rubber industry, the largest and most versatile fillers are nano-scale carbon black and white carbon black. Carbon black is the most important reinforcing filler in the rubber industry, but with the dwindling of petroleum resources, the production and application of carbon black completely dependent on petroleum encounter challenges. The research on alternative materials for rubber reinforcement and non-petroleum resources that can replace carbon black has gradually become one of the importa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L9/06C08L7/00C08L11/00C08L23/22C08L9/02C08L9/00C08L23/16C08L27/12C08L83/04C08K9/06C08K9/04C08K3/04C08K3/36
Inventor 刘力毛迎燕张法忠温世鹏
Owner BEIJING UNIV OF CHEM TECH
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