Application fields of carbon / Carbon Composites

Carbon / carbon composites are carbon based composites reinforced with carbon fiber or graphite fiber. Their total carbon structure not only retains the excellent mechanical properties and flexible structural designability of fiber reinforced materials, but also has many advantages of carbon materials, such as low density, low thermal expansion coefficient, high thermal conductivity, excellent heat shock resistance, ablation resistance and friction resistance, It is particularly important that the mechanical properties of the material increase with the increase of temperature, which makes it an ideal structural material in aerospace, automotive, medical and other fields.

Carbon / carbon composites are widely used in aerospace thermal protection materials and aeroengine thermal structural components. The most successful representative of carbon / carbon composites industrialization is the aircraft brake disc made of carbon / carbon composites.

In the civil field, carbon / carbon composites are more mature, which are used as thermal field materials for monocrystalline silicon furnace, polycrystalline silicon ingot furnace and hydrogenation furnace in the field of solar energy.

In biomedical field, carbon / carbon composites have broad application prospects due to their similar elastic modulus and biocompatibility with artificial bone.

In the industrial field, carbon / carbon composites can be used as piston and connecting rod materials of diesel engine. The service temperature of carbon / carbon composite diesel engine parts can be increased from 300 ℃ to 1100 ℃. At the same time, its density is low, reducing the loss of energy, and the heat engine efficiency can reach 48%; Due to the low coefficient of thermal expansion of C / C composites, sealing rings and other materials can not be used in the effective temperature, which simplifies the structure of the component.