C - Chemistry – Metallurgy – 03 – C
Patent
C - Chemistry, Metallurgy
03
C
C03C 3/087 (2006.01) C03C 3/097 (2006.01) C03C 13/00 (2006.01)
Patent
CA 2687626
The invention relates to reinforcing glass yarns having a composition that includes the following components within the limits defined below and expressed in percentage by weight, namely 62 - 72 % SiO2 , 4 - 11 % AI2O3 , 8 - 22 % CaO,1 - 7 % MgO, 0 - 9 % Na2O + K2O + Li2O, 0 - 4 % BaO + SrO, 0 - 4 % B2O3, 0 - 2 % F2 and0 - 4 % other components: TiO2 + ZrO2 + Fe2O3 (total iron) + P2O5 + MnO + Cr2O3 + MoO3 + ZnO + SO3. Said yarns are made from a low-cost glass providing excellent trade-off between the mechanical properties thereof, represented by specific Young's modulus, and the fibre production conditions of same. The invention also relates to the glass composition designed for the production of said glass yarns, structures based on such yarns, particularly screens, fabrics and mats, and composites including such yarns.
L'invention se rapporte à des fils de verre de renforcement dont la composition comprend les constituants suivants dans les limites définies ci-après exprimées en pourcentages pondéraux : SiO2 62 - 72 % AI2O3 4 - 1 1 % CaO 8 - 22 % MgO 1 - 7 % Na2O + K2O + Li2O O - 9 % BaO + SrO 0 - 4 % B2O3 O - 4 % F2 0 - 2 % Autres constituants : TiO2 + ZrO2 + Fe2O3 (fer total) + P2O5 + MnO + Cr2O3 + MoO3 + ZnO + SO3 O - 4 % Ces fils sont constitués d'un verre économique offrant un excellent compromis entre ses propriétés mécaniques représentées par le module d'Young spécifique et ses conditions de fibrage. L'invention concerne également la composition de verre adaptée à la réalisation desdits fils de verre, les structures à base de tels fils, notamment des grilles, des tissus et des mats, et les composites incorporant de tels fils.
Berthereau Anne
Lalande Jerome
Goudreau Gage Dubuc
Saint-Gobain Technical Fabrics Europe
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