English name: timely fiber
Ingredients: high-purity silicon dioxide and natural crystal.
Type: fiber
The purity is 99.95% and the density is 2.2g/cm3. The tensile strength is 7GPa and the tensile modulus is 70GPa. It has heat resistance, corrosion resistance and flexibility. High strength retention at high temperature, dimensional stability, thermal shock resistance, chemical stability, light transmittance and electrical insulation. The diameter of the reinforcing yarn is 4~ 10μm, and the fiber diameter of the cotton varies with the application, which is about 0.7 ~10 μ m. ..
The manufacturing method includes: (1) melting and drawing the timely rod or tube with oxyhydrogen flame, and then blowing the tube with oxyhydrogen flame to make the timely cotton with the diameter of 0.7~ 1μm; (2) it is melted by flame in time, and short fibers and mats are formed by high-speed airflow; (3) passing the time line or rod through a hydrogen-oxygen flame or a gas flame at a constant speed, softening, and drawing into filaments at a high speed.
It is mainly used as the reinforcement of electrical insulation materials, thermal insulation materials and composite materials, and is used to manufacture aircraft nose radome, rocket nozzle, ablation materials of spacecraft, etc.