АРМИРУЮЩИЕ НИТИ И КОМПОЗИТЫ, СТОЙКИЕ К АГРЕССИВНОЙ СРЕДЕ

摘要

The present invention relates to reinforcement yarns coated with a sizing composition comprising at least one silane satisfying the formula: Si(R¹)(R²)(R³)(R⁴) in which: R¹, R² and R³ are chosen from the following atoms or groups: -H (except in the case of R³), -Cl, -O-R⁵, -O-R⁶-O-R⁵, -O-(C-O)-R⁵, -O-R⁶-(C-O)-R⁵, R⁵ and R⁶ being chosen from hydrocarbon radicals whose main chain has from 1 to 4 carbon atoms; R⁴--R⁷-NHR⁸ R⁷ being chosen from branched hydrocarbon radicals whose main chain has from 2 to 6 carbon atoms, R⁸ being chosen from the following groups: -H, -R⁹-NH₂, -R¹⁰-NH-R⁹-NH₂, R⁹ being chosen from hydrocarbon radicals containing 1 to 12 carbon atoms or from carbonyls, and R¹⁰ being chosen from hydrocarbon radicals whose main chain has from 1 to 6 carbon atoms. The glass yarns according to the invention are particularly suitable for reinforcing organic materials, the yarns and composites obtained resisting in a corrosive medium.