Patent ID: 10207949

Abstract:
A composition for producing a glass fiber, including the following components with corresponding percentage amounts by weight: SiO2: 57.1-61.4%; Al2O3: 17.1-21%; MgO: 10.1-14.5%; Y2O3: 1.1-4.3%; CaO: <6.5%; Li2O+Na2O+K2O: ≤1%; Li2O: ≤0.75%; TiO2: <1.8%; and Fe2O3: 0.05-1.2%. The total weight percentage of the above components in the composition is greater than or equal to 98%. The weight percentage ratio of Al2O3 to SiO2 is greater than or equal to 0.285. The invention also provides a glass fiber produced using the composition and a composite material including the glass fiber.