Glass strands and composites having an organic and/or inorganic matrix containing said strands
AssigneeSaint-Gobain Adfors
InventorEmmanuel Lecomte
Life of this patent
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Abstract
The invention relates to glass strands especially for the production of composites having an organic and/or inorganic matrix, the composition of which strands comprises the following constituents in the limits defined below, expressed as percentages by weight: SiO2 50-65% Al2O3 12-23% SiO2 + Al2O3 >79% 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%. 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.
Claims18
A glass strand comprising a composition with limits defined below expressed as percent by weight:
- SiO2
- 58-63%
- Al2O3
- 18-23%
- SiO2 + Al2O3
- >79%
- CaO
- 5-9%
- MgO
- 9-12%
- Li2O
- 1-2%
- BaO + SrO
- 0-1%
- B2O3
- 0-2%
- TiO2
- 0-1%
- Na2O + K2O
- <0.8%
- F2
- 0-1%
- Fe2O3
- <0.5%.
Dependencies are inferred from the claim text.