C/C composites are carbon fiber reinforced carbon matrix composites (C/C). Carbon fibers are first woven or needled into preforms (carbon cloth, short fiber mesh, quasi - three - dimensional needled felt, three - dimensional fine - woven integral fabric, three - dimensional puncture fabric, multi - direction woven fabric, etc.), and then impregnated resin (orbitumen) -carbonization or chemical vapor deposition/ penetration (CVD/CVI) processes fill the pores in the porous preforms to obtain the material with the desired structure and properties.
Functions of Carbon/carbon aircraft (heavy trucks, or F1 racing cars)
Brake discs are mainly used in various types of aircraft, with high strength, light weight, durability and wear resistance.
| Name | C/Caircraft brake disc |
| Density | 1.76-1.82g/cm³ |
| Tensile strength | 30-50MPa |
| Static friction coefficient | 0.12-0.15 |
| line wear rate | 0.7 |
| Gravifation | >30 |
| Specific heat capacity | 0.7-0.9kj.(kg.k)-1 |
| Thermal conductivity | 15-30(水平)W/(m.k) 3-10(垂直)w/(m.k) |
| Bending strength | 800-100MPa |
| Shear strength | 8-12MPa |
| Dynamicfridion coefficient | 0.3-0.4 |
| Extension rate | 0.2-0.3 |
| Thermal stability | 1000 |
| Linear therma lexpansion coeficient | (0.5-2)×10-6(水平)1/k |
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