The protagonist of graphene or cable material

Graphene, which was evaluated by people in the industry as a new material era for the 21st century and will bring material changes to the world, was held in Qingdao at the end of October 2013. The new plastic materials, new technologies, and new achievements exchange conference will be held in Qingdao. At the annual meeting of the expert committee of the China Plastics Association, it became one of the key topics discussed by experts.

According to experts, graphene has a variety of excellent features: 1. Excellent electrical conductivity: Graphene is a semi-conductor with a gap of zero, and electrons can reach 1/300 of the speed of light, far exceeding the movement of other metal conductors or semiconductors. speed. Its carrier mobility is the highest at room temperature, and the resistivity is only about 10-6?•cm, which is lower than copper (the current preferred raw material for wire and cable conductors in China) or silver, and is the world’s lowest resistivity material at present. 2, large specific surface area: due to the monolayer two-dimensional structure of graphene, it has a large specific surface area, the ideal single-layer graphene has a specific surface area of ​​up to 2630m2 / g, much higher than the ordinary activated carbon 1500 m2 / g, which This makes graphene has great potential in the application of energy storage materials. 3. High thermal conductivity: Graphene has excellent thermal conductivity, higher than carbon nanotubes and diamonds. The thermal conductivity of monolayer graphene can reach 5300W/(mK) at room temperature, which is 5 times that of diamond. 4, ultra-high strength: graphene is the highest strength material, but also has a good toughness, you can bend, Young's modulus reaches 1060GPa, is the most solid material of the present, more than the best steel 100 Times, higher hardness than diamond, can be used to make super-strength membranes and have the potential to prepare "space elevators." 5, high light transmittance: almost completely transparent, single-layer graphene has a very high degree of transparency, only absorb about 2.3% of visible light.

Experts pointed out that the special structure of graphene makes it possess the toughest and thinnest features in the world. It also has strong toughness, electrical conductivity and thermal conductivity. Because graphene has many characteristics, it has a huge space for development. In the future, it can be applied to many fields such as electronics, aerospace, optics, energy storage, biomedicine, and daily life.

It is understood that because graphene has excellent electrical conductivity and other characteristics, if applied to the cable conductor can increase the conductivity of the same conductor, so it has been concerned by the wire and cable industry, domestic companies have been for graphene in the cable conductor Application for research.