| 摘要 |
The invention relates to glass reinforcement strands whose composition comprises the following constituents in the limits defined below, expressed as percentages by weight:;SiO250-65%Al2O312-20%CaO12-17%MgO 6-12%CaO/MgO≦2, preferably ≧1.3Li2O0.1-0.8%, preferably ≦0.6%BaO + SrO0-3%B2O30-3%TiO20-3%Na2O + K2O<2%F20-1%Fe2O3 <1%.
These strands are made of a glass offering an excellent compromise between its mechanical properties, represented by the specific Young's modulus, and its melting and fiberizing conditions. |
