C - Chemistry – Metallurgy – 03 – C
Patent
C - Chemistry, Metallurgy
03
C
C03C 13/00 (2006.01) C03C 3/087 (2006.01)
Patent
CA 2721384
The invention relates to glass strands, particularly for producing organic and/or inorganic matrix composites, the composition of which contains the following components within the limits hereafter defined and expressed in weight percent: SiO2 50-65%, Al2O3 12-23%, CaO 1-10%, MgO 6-12%, Li2O 1-3%, preferably 1-2%, BaO + SrO 0-3%, B2O3 0-3%, TiO2 0-3%, Na2O + K2O <2%, F2 0-1%, Fe2O3 <1%. Said strands comprise a glass offering an excellent compromise between the mechanical properties thereof, represented by the specific Youngs modulus, and the fusion and fiber forming conditions thereof.
L'invention se rapporte à des fils de verre destinés notamment à la réalisation de composites à matrice organique et/ ou inorganique dont la composition comprend les constituants suivants dans les limites définies ci-après exprimées en pourcentages pondéraux : SiO2 50 -65 % Al2O3 12 -23% CaO 1-10% MgO 6-12% Li2O1- 3%, de préférence 1-2 % BaO+SrO 0 -3 % B2O3 0 -3 % TiO2 0 -3 % Na2O + K2O < 2 % F2 0-1 % Fe2O3 < 1%. Ces fils sont constitués d'un verre offrant un excellent compromis entre ses propriétés mécaniques représentées par le module d'Young spécifique et ses conditions de fusion et de fibrage.
Goudreau Gage Dubuc
Saint-Gobain Technical Fabrics Europe
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