GLASS YARN FOR REINFORCING ORGANIC AND/ OR INORGANIC MATERIALS

摘要

The invention relates to reinforcing glass yarns whose composition comprises the following components within the limits defined thereafter in percentages by weight: SiO2 59 - 63 %, AL2O3 10 - 16 %, CaO 16 - 23 %, MgO 1 3.2 %, Na2O + K2O + Li2O 0 - 2 %, TiO2 0 - 1 %, B2O3 0.1 - 1,8 %, Li2O 0 0.5 %, ZnO 0 0.4 %, MnO 0 - 1 %, F 0 0.5 %. The inventive yarns exhibit improved mechanical, acid and high-temperature resistance for the low cost composition thereof. A method and a composition for producing said yarns are also disclosed.