High Quartz Silica Glass Fiber Yarn (SR25)
Fiber fineness: 3 ~ 25 μ M
Purity: More than 99.9 percent content of SiO2
Performance: Melting point: 1710 degree
Crystallization temperature: 70dgree above
Thermotolerant performance: 1200 degree half hour starts not to change form crisply.
Thermal coefficient: (mat-like) in the following 200 degree <0.03 kcal/m at the degree
In 1000 degree at 0.2 kcal/m at the degree
Tensile capacity: 15.4 N
Tensile strength: Normal temperature > 150Kg/mm2 500 degree at the strength reduced by 20%
Elastic modulus: 96 *104Kg/mm2
Dielectric constant: E= 4.5 Volume Resistance: (for cable) At room temperature> 1 * 1017 Ω Cm 500 degree at > 1 *1010 Ω Cm 1000degree at > 1 * 108 Ω Cm
Water tolerance: In the water boiled for three hours without loss
Acid resistance: 1 NH2SO4 boiled in three hours without loss
Alkaline resistance: 0.5 NNaOH boiled three hours loss of 0.62 percent

Applying:
1. For high-temperature insulation: Such as rockets, missiles for insulation, earthquake or other high-temperature insulating materials engineering.
2. Used for reinforced plastic: High-temperature production of synthetic resin and high-strength glass fiber reinforced plastic materials. Widely used in aviation, missiles and rockets, and so on.
3. Special cable: Use for the foreskin of the cable, used in high temperature on the special-purpose cable.
4. Acid-base for high-temperature filters
For vacuum tube filled with material: Water Rafah as a quartz tube filled with silk material, in order to improve the performance of the tube, and extend the life of vacuum tube.