"High-silica" glass fiber is a high-temperature inorganic fiber, softening point close to 1700 ℃, 900 ℃ environment in the long term use, can be used for spacecraft thermal protection, ablative materials, high temperature insulation fireproofing materials, high temperature insulation materials etc., can be made into a variety of products. Continuous high-silica glass fibers can be used for weaving, sewing, winding, short and cutting technology, the high-insulation, thermal insulation and modern protective equipment, such as three-dimensional fabric, casing, chopped yarn, yarn length, suture, and by pad special surface treatment of the sewing thread, rope high-silica glass fiber products. 
 Product standard (enterprise standard Q/WBO118-2001) 
 (A) continuous high silica glass fiber yarn Specifications Performance: 
 Product Code 
 Linear density (tex) 
 Twist (twist / m) 
 Breaking Strength (N) 
 SiO2,% 
 High-temperature shrinkage (1000oC) 
 BCT8-120S120D 
 120 ± 12 
 120 ± 18 
 20 
 ≥ 96 
 ≤ 4% 
 BCT8-160S120D 
 160 ± 16 
 120 ± 18 
 25 
 ≥ 96 
 ≤ 4% 
 BCT8-220S180D 
 220 ± 22 
 180 ± 18 
 30 
 ≥ 96 
 ≤ 4% 
 (B) the high silica yarn length: 
 High silica yarn length is a length of yarn beam, used to enhance the body such as phenolic ablative suppression. 
 High silica glass fiber length yarn specifications, performance: 
 Product Code 
 Project 
 Indicators 
 BST8-220S180D 
 Burning heat loss 
 ≤ 3% 
 SiO2 
 ≥ 96% 
 Linear density 
 220 +22 tex 
 Breaking Strength (N) 
 ≥ 4N 
 Length 
 950 ± 150m 
 Implementation of standards 
 GJB1679-93 high-silica glass fiber length yarn specifications.