Abstract: A composition for producing a glass fiber, including the following components with corresponding percentage amounts by weight: 54.2-64% SiO2, 11-18% Al2O3, 20-25.5% CaO, 0.3-3.9% MgO, 0.1-2% of Na2O+K2O, 0.1-1.5% TiO2, and 0.1-1% total iron oxides including ferrous oxide (calculated as FeO). The weight percentage ratio C1=FeO/(iron oxides?FeO) is greater than or equal to 0.53. The total content of the above components in the composition is greater than 97%. The invention also provides a glass fiber produced using the composition and a composite material including the glass fiber.

Abstract: A composition for producing a glass fiber, including the following components with corresponding percentage amounts by weight: 54.2-64% SiO2, 11-18% Al2O3, 20-25.5% CaO, 0.3-3.9% MgO, 0.1-2% of Na2O+K2O, 0.1-1.5% TiO2, and 0.1-1% total iron oxides including ferrous oxide (calculated as FeO). The weight percentage ratio C1=FeO/(iron oxides—FeO) is greater than or equal to 0.53. The total content of the above components in the composition is greater than 97%. The invention also provides a glass fiber produced using the composition and a composite material including the glass fiber.

Abstract: Provided are a high performance glass fiber composition, and a glass fiber and a composite material thereof. The content, given in weight percentage, of each component of the glass fiber composition is as follows: 52-67% of SiO2, 12-24% of Al2O3, 0.05-4.5% of Sm2O3+Gd2O3, less than 2% of Li2O+Na2O+K2O, 10-24% of CaO+MgO+SrO, less than 16% of CaO, less than 13% of MgO, less than 3% of TiO2, and less than 1.5% of Fe2O3. The composition significantly improves the mechanical properties and the thermal stability of glass, significantly reduces the liquidus temperature and forming temperature of glass, and under equal conditions, significantly reduces the crystallisation rate of glass. The composition is particularly suitable for the tank furnace production of a high performance glass fiber having excellent thermal stability.

Abstract: The present invention provides a glass fiber composition, glass fiber and composite material therefrom. The glass fiber composition comprises the following components expressed as percentage by weight: 58.5-62.5% SiO2, 14.5-17% Al2O3, 10.5-14.5% CaO, 8-10% MgO, 0.5%<Li2O?1%, 0.05-1% Na2O, 0.05-1% K2O, 0.05-1% Fe2O3, 0.15-1.5% TiO2, wherein the range of the molar percentage ratio C1=Li2O/Al2O3 is 0.105-0.22, and the range of the molar percentage ratio C2=MgO/(CaO+MgO) is 0.435-0.55. Said composition can increase the mechanical properties of the glass while reducing the glass viscosity, crystallization risk and amount of bubbles, thereby making it more suitable for large-scale production with refractory-lined furnaces.

Abstract: The present invention provides a glass fiber composition, a glass fiber and a composite material therefrom. The glass fiber composition comprises the following components expressed as percentage by weight: 53-64% SiO2, greater than 19% and lower than 25% Al2O3, 0.05-7% Y2O3+La2O3+Gd2O3, not greater than 1% Li2O+Na2O+K2O, 10-24% CaO+MgO+SrO, 1.5-12% CaO, lower than 2% TiO2, lower than 1.5% Fe2O3.

Abstract: The present invention provides a glass fiber composition, glass fiber and composite material therefrom. The glass fiber composition comprises the following components expressed as percentage by weight: 58-63% SiO2, 13-17% Al2O3, 6-11.8% CaO, 7-11% MgO, 3.05-8% SrO, 0.1-2% Na2O+K2O+Li2O, 0.1-1% Fe2O3, 0-1% CeO2 and 0-2% TiO2, wherein a weight percentage ratio C1=(MgO+SrO)/CaO is greater than 1. Said composition greatly improves the refractive index of glass, significantly shields against harmful rays for humans and further reduces glass crystallization risk and production costs, thereby making it more suitable for large-scale production with refractory-lined furnaces.

Abstract: A high-modulus glass fiber composition, and a glass fiber and a composite material therefrom. The glass fiber composition comprises the following components in weight percentage: SiO2 55.7 to 58.9%, Al2O3 15 to 19.9%, Y2O3 0.1 to 4.3%, La2O3 less than or equal to 1.5%, CeO2 less than or equal to 1.2%, CaO 6 to 10%, MgO 9.05 to 9.95%, SrO less than or equal to 2%, Li2O+Na2O+K2O less than or equal to 0.99%, Li2O less than or equal to 0.65%, Fe2O3 less than 1%, TiO2 0.1 to 1.5%; wherein, the range of the weight percentage ratio C1=Y2O3/(Y2O3+La2O3+CeO2) is greater than 0.6. The composition can greatly improve the elastic modulus of glass, significantly reduce liquidus temperature and forming temperature of the glass, greatly reduce the crystallization rate of molten glass and bubble amount under the same conditions, and therefore is more suitable for large-scale tank furnace production of high-modulus fiberglass with low bubble amount.

Abstract: A high modulus glass fiber composition, and a glass fiber and a composite material thereof. The glass fiber composition comprises the following components expressed as percentage by weight: 53-68% of SiO2, 13-24.5% of Al2O3, 0.1-8% of Y2O3+La2O3, less than 1.8% of La2O3, 10-23% of CaO+MgO+SrO, less than 2% of Li2O+Na2O+K2O, and less than 1.5% of Fe2O3, and the range of a weight percentage ratio C1 is more than 0.5, wherein C1=Y2O3/(Y2O3+La2O3). The composition significantly increases the elastic modulus of glass, significantly reduces the liquidus temperature and the forming temperature of glass, and under equal conditions, significantly reduces the crystallization rate and the bubble rate of glass. The composition effectively improves the material properties of glass, and is particularly suitable for the tank furnace production of a high modulus glass fiber having a low bubble rate.

Abstract: A composition of matter, including the following components expressed as percentage by weight: SiO2, 58-60.4%; Al2O3, 14-16.5%; CaO, 14.1-16.5%; MgO, 6-8.2%; Li2O, 0.01-0.4%; Na2O+K2O, less than 1.15%; K2O, greater than 0.5%; TiO2, less than 1.5%; and Fe2O3, less than 1%. The range of the weight percentage ratio CaO/MgO is greater than 2 and less than or equal to 2.4. A glass fiber prepared from the composition is also provided.

Abstract: Provided are a high performance glass fiber composition, and a glass fiber and a composite material thereof. The content, given in weight percentage, of each component of the glass fiber composition is as follows: 52-67% of SiO2, 12-24% of Al2O3, 0.05-4.5% of Sm2O3+Gd2O3, less than 2% of Li2O+Na2O+K2O, 10-24% of CaO+MgO+SrO, less than 16% of CaO, less than 13% of MgO, less than 3% of TiO2, and less than 1.5% of Fe2O3. The composition significantly improves the mechanical properties and the thermal stability of glass, significantly reduces the liquidus temperature and forming temperature of glass, and under equal conditions, significantly reduces the crystallisation rate of glass. The composition is particularly suitable for the tank furnace production of a high performance glass fiber having excellent thermal stability.

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.

Abstract: A composition for producing a glass fiber, including the following components with the corresponding percentage amounts by weight: SiO2: 58-62%; Al2O3: 14-18%; CaO+MgO: 20-24.5%; CaO: greater than 14%; Li2O: 0.01-0.5%; Na2O+K2O: less than 2%; TiO2: less than 3.5%; Fe2O3: less than 1%; and F2: less than 1%. The weight percentage ratio of CaO/MgO is greater than 2 and less than or equal to 2.6; and the weight percentage ratio SiO2/CaO is between 3.3 and 4.3. The invention also provides a glass fiber produced using the composition and a composite material including the glass fiber.

Abstract: A high modulus glass fiber composition, and a glass fiber and a composite material thereof. The glass fiber composition comprises the following components expressed as percentage by weight: 53-68% of SiO2, 13-24.5% of Al2O3, 0.1-8% of Y2O3+La2O3, less than 1.8% of La2O3, 10-23% of CaO+MgO+SrO, less than 2% of Li2O+Na2O+K2O, and less than 1.5% of Fe2O3, and the range of a weight percentage ratio C1 is more than 0.5, wherein C1=Y2O3/(Y2O3+La2O3). The composition significantly increases the elastic modulus of glass, significantly reduces the liquidus temperature and the forming temperature of glass, and under equal conditions, significantly reduces the crystallization rate and the bubble rate of glass. The composition effectively improves the material properties of glass, and is particularly suitable for the tank furnace production of a high modulus glass fiber having a low bubble rate.

Abstract: The present invention provides a glass fiber composition, glass fiber and composite material therefrom. The glass fiber composition comprises the following components expressed as percentage by weight: 56-64% SiO2, 12-18% Al2O3, 0.1-1% Na2O, 0.1-1% K2O, 0.1-1% Fe2O3, 0.05-1% Li2O+Bi2O3, 19-25% CaO+MgO+SrO, 0.1-1.5% TiO2 and 0-1% CeO2, wherein a weight percentage ratio C1=Li2O/Bi2O3 is greater than 1, and a weight percentage ratio C2=(MgO+SrO)/CaO is 0.4-1, and a weight percentage ratio C3=MgO/(MgO+SrO) is greater than 0.7. Said composition reduces the amount of bubbles, viscosity and crystallization risk of the glass, thereby making it more suitable for large-scale production with refractory-lined furnaces.

Abstract: The present invention provides a glass fiber composition, glass fiber and composite material therefrom. The glass fiber composition comprises the following components expressed as percentage by weight: 58-63% SiO2, 13-17% Al2O3, 6-11.8% CaO, 7-11% MgO, 3.05-8% SrO, 0.1-2% Na2O+K2O+Li2O, 0.1-1% Fe2O3, 0-1% CeO2 and 0-2% TiO2, wherein a weight percentage ratio C1=(MgO+SrO)/CaO is greater than 1. Said composition greatly improves the refractive index of glass, significantly shields against harmful rays for humans and further reduces glass crystallization risk and production costs, thereby making it more suitable for large-scale production with refractory-lined furnaces.

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.

Abstract: A high-modulus glass fiber composition, and a glass fiber and a composite material therefrom. The glass fiber composition comprises the following components in weight percentage: SiO2 55.7 to 58.9%, Al2O3 15 to 19.9%, Y2O3 0.1 to 4.3%, La2O3 less than or equal to 1.5%, CeO2 less than or equal to 1.2%, CaO 6 to 10%, MgO 9.05 to 9.95%, SrO less than or equal to 2%, Li2O+Na2O+K2O less than or equal to 0.99%, Li2O less than or equal to 0.65%, Fe2O3 less than 1%, TiO2 0.1 to 1.5%; wherein, the range of the weight percentage ratio C1=Y2O3/(Y2O3+La2O3+CeO2) is greater than 0.6. The composition can greatly improve the elastic modulus of glass, significantly reduce liquidus temperature and forming temperature of the glass, greatly reduce the crystallization rate of molten glass and bubble amount under the same conditions, and therefore is more suitable for large-scale tank furnace production of high-modulus fiberglass with low bubble amount.

Abstract: The present invention provides a glass fibre composition, a glass fibre and a composite material therefrom. The glass fibre composition comprises the following components expressed as percentage by weight: 53-64% SiO2, greater than 19% and lower than 25% Al2O3, 0.05-7% Y2O3+La2O3+Gd2O3, not greater than 1% Li2O+Na2O+K2O, 10-24% CaO+MgO+SrO, 1.5-12% CaO, lower than 2% TiO2, lower than 1.5% Fe2O3.

Abstract: The present invention provides a glass fiber composition, glass fiber and composite material therefrom. The glass fiber composition comprises the following components expressed as percentage by weight: 58.5-62.5% SiO2, 14.5-17% Al2O3, 10.5-14.5% CaO, 8-10% MgO, 0.5%<Li2O?1%, 0.05-1% Na2O, 0.05-1% K2O, 0.05-1% Fe2O3, 0.15-1.5% TiO2, wherein the range of the molar percentage ratio C1=Li2O/Al2O3 is 0.105-0.22, and the range of the molar percentage ratio C2=MgO/(CaO+MgO) is 0.435-0.55. Said composition can increase the mechanical properties of the glass while reducing the glass viscosity, crystallization risk and amount of bubbles, thereby making it more suitable for large-scale production with refractory-lined furnaces.

Abstract: A composition of matter, including the following components expressed as percentage by weight: SiO2, 58-60.4%; Al2O3, 14-16.5%; CaO, 14.1-16.5%; MgO, 6-8.2%; Li2O, 0.01-0.4%; Na2O+K2O, less than 1.15%; K2O, greater than 0.5%; TiO2, less than 1.5%; and Fe2O3, less than 1%. The range of the weight percentage ratio CaO/MgO is greater than 2 and less than or equal to 2.4. A glass fiber prepared from the composition is also provided.