Carbon composite materials refer to the general term for composite materials with carbon as the matrix. They are made of carbon and resin, metal, ceramics and other matrices to make structural materials. Carbon composite materials have high strength, excellent heat resistance (can withstand high temperatures above 2000°C), excellent thermal shock resistance, low thermal expansion coefficient (small deformation), small heat capacity (energy saving), and small specific gravity (steel 1/5), excellent corrosion resistance and radiation resistance. It is often used in fields with strict requirements on density, stiffness, weight, fatigue properties, etc., such as carbon-carbon composite parts for 3D printing, vacuum furnace protection carbon felt, aerospace carbon fiber, etc.