Graphene composite material made a breakthrough in China

Recently, Jiangsu Zhongtian Science and Technology Co., Ltd. led the joint development of the Institute of Process Engineering, Chinese Academy of Sciences of metal (aluminum) -based graphene composite materials (hereinafter referred to as composite materials) made a breakthrough. The composite material has been successfully piloted on an industrial continuous casting and rolling line under the premise of ensuring laboratory performance data. It has taken a crucial step toward the development of graphene in the metal field.

Graphene and its related applications are currently the focus of global attention, with its unique two-dimensional structure, high strength, high electrical conductivity and high thermal conductivity and other super mechanical and functional properties, is considered to be the best composite reinforcement Phase, the related research has also become a hot spot in the field of composite materials. The project of metal-based graphene composite, jointly developed by Zhongtian Science and Technology and the Chinese Academy of Sciences, aims at the key bottleneck of Zhongtian's existing main industries ---- overhead conductors of aluminum and aluminum alloy, namely, tensile strength and electrical conductivity Contradictory relationship between the study, the goal is to relative to the traditional material conductivity does not drop or slightly under the premise of substantially improve the tensile strength of the material. The project achievements will provide new and revolutionary wire product options for the construction of China's power system. The new wire types derived from this project will make breakthroughs in various fields such as energy conservation, anti-heavy ice and large spanning.

The project for the first time in the world for the successful use of industrial continuous casting and rolling method batch preparation of aluminum-based graphene composite rod, compared with the previous batch production, will have higher capacity, lower costs, The future industrialization of composite materials is of great importance to the promotion process. During the implementation of the project, the tensile strength of the composite material developed by the targeted process is increased by 25% -50%. The value is in good agreement with the data obtained in the laboratory research phase and the batch pilot phase, The advanced level in research results.

The unique graphene additive process developed in this project not only effectively solves the problem of difficult infiltration between graphene and aluminum, but also realizes the online addition of graphene in the continuous casting and rolling process. The mastery of this technology will not only provide support for the application of graphene in the field of aluminum for overhead wires, but also be applied in most aluminum and aluminum alloy materials in combination with other process technologies to achieve more targeted new composite materials performance. For example, during the lightweight development of transport vehicles, "substituting steel with aluminum" has become a major trend. With the help of graphene, the amount of aluminum can be further reduced and a greater degree of weight reduction can be achieved, and its economic and social benefits Very significant.

At present, Zhongtian Science and Technology has carried out industrial layout for the technical achievements of the project. With a total investment of 300 million yuan, it relies on the implementation of Shanghai Zhongtian Aluminum Wire Co., Ltd., a subsidiary of its main overhead wire. By then, the advanced technology will be the first to be applied to aluminum and aluminum overhead conductor products. After that, it will expand into a wide range of metal products to form a new growth point for the industry and lead the development of high-end graphene composite technology in China, resulting in a good economy And social benefits.

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