Method for functional coating of basalt fiber and of basalt fiber core twisted yarn, basalt fiber and basalt fiber core twisted yarn by using the method and fabric woven therefrom

• Main Author: LEE, CHUN KYU
• Format: Patent
• Language: English; French; German
• Published: 29.10.2008
• Subjects: CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMISTRY; GLASS; JOINING GLASS TO GLASS OR OTHER MATERIALS; METALLURGY; MINERAL OR SLAG WOOL; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS

Disclosed herein is a method of functionally coating a basalt fiber, including: coating a basalt fiber by passing the basalt fiber through an aqueous fluorine-based solution including 50 ~ 60 wt% of polytetrafluoroethylene (PTFE), 2 ~ 5 wt% of a nonionic surfactant and water at a passing speed of 1 ~ 2 m/minute, the solution being maintained at a temperature of 20 ~ 25°C; drying the coated basalt fiber at a temperature of 80 ~ 110°C; heating the dried basalt fiber to a temperature of 180 ~ 270°C; and sintering the heated basalt fiber at a temperature of 360 ~ 420°C. Further, disclosed herein is a method of functionally coating a basalt core yarn, including: preparing a basalt core yarn by winding a sub fiber around a basalt fiber, which is a main fiber, and then twisting the sub fiber and basalt fiber; coating the basalt core yarn by passing the prepared basalt core yarn through a coating solution including 35 ~ 45 wt% of a phosphorus-based fire retardant, 50 ~ 59.9 wt% of toluene, which is a solvent, and 0.1 ~ 10 wt% of a thermostabilizer at a passing speed of 280 ~ 320 m/hour, the coating solution being maintained at a temperature of 95 ~ 105°C; and drying the coated basalt core yarn.