Graphene modified waste tire thermal cracking carbon black composite material and preparation method thereof

Abstract

The invention discloses a preparation method of a graphene-modified waste tire thermal cracking carbon black nano composite material, which mainly comprises the following steps: preparing graphene oxide, preparing a thermal cracking carbon black aqueous suspension, carrying out wet blending, acidification, purification and chemical modification on the graphene oxide and the thermal cracking carbonblack aqueous suspension, and finally, carrying out aftertreatment and high-temperature heat treatment to obtain the product. The ash content in pyrolytic carbon black of waste tires in the finally obtained product is greatly reduced; after chemical modification, graphene oxide forms chemical bonding on the surface of carbon black, the agglomeration problem caused by independent addition of graphene can be avoided in the use process, the graphene makes up for performance loss caused by independent use of pyrolytic carbon black, and the service life of the product is prolonged. According to the production process, the organic combination of a graphene production process and a cracked carbon black modification process is comprehensively utilized, so that the product performance is excellent, the production process is energy-saving, and the production process is suitable for large-scale production.

Description

technical field [0001] The invention relates to a preparation method of an auxiliary agent for rubber, in particular to a preparation method of a graphene graft modified waste tire pyrolysis carbon black nanocomposite material. Background technique [0002] my country is a big country in the production and use of tires. There is a huge amount of waste tires produced every year. The treatment methods generally adopt solid waste treatment methods, such as accumulation and burial, which seriously pollute people's living environment and even affect human health. It is more beneficial The way to deal with it is a problem that needs to be solved urgently. The thermal cracking treatment of waste tires is considered to be an effective recycling method, which can not only dispose of tires, but also recycle certain materials. Carbon black from pyrolysis of waste tires is one of the main products of pyrolysis, and how to make it efficiently and comprehensively utilized is a crucial ste...

AI Technical Summary

Problems solved by technology

Since the appearance of carbon black for tires is not completely restored during the pyrolysis process, and there is still a large amount of ash, it cannot be reused in tires or other rubber products. At present, it is mainly used as pigment carbon black. In the color masterbatch, how to make it reasonably processed to improve its application level is a major problem in the industry

[0003] Graphene itself has excellent functionality. At present, its related products have been applied in the market. It has exerted its excellent performance in the fields of strength, thermal conductivity, electrical conductivity, and anti-corrosion. However, it has not yet been widely used in the rubber field. application

Although graphene masterbatch and other products have been promoted to tires and some rubber products in a small amount, it is still difficult to form a large-scale market share based on its high price and the cost control of the rubber industry.

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