作者: Anne Berthereau , Emmanuel Lecomte
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摘要: The invention relates to a glass yarn having chemical composition which is essentially free of boron oxide and includes the following constituents within limits defined below expressed in percentage by weight, namely: 55 65 SiO2, 9 16 Al2O3, 15 26 CaO, 1 5 MgO, 0.5 BaO+SrO, 0 2 Na2O + K2O Li2O, TiO2, ZnO, ZrO2. also composites containing said yarns.