High-strength and high-modulus glass fiber composition, glass fiber and reinforced composite material

The invention provides a high-strength and high-modulus glass fiber composition, a glass fiber and a reinforced composite material, and relates to the technical field of glass, the high-strength and high-modulus glass fiber composition comprises the following components by mole percentage: 60-69% of SiO2, 11-15% of Al2O3, 3-9% of CaO, 12-19% of MgO, 0.02-0.6% of Li2O, 20-1.5% of ZrO, 0.05-0.5% of CeO2, 0.02-0.3% of SnO2, 0-0.3% of La2O3, and 0-0.3% of Y2O3; wherein the molar percentage of the components meets the condition that Li2O + CaO + MgO is greater than or equal to 17.5% and less than or equal to 25%. The high-strength and high-modulus glass fiber composition provided by the invention has the advantages of low density, high strength, high modulus and low devitrification tendency, improves the molding process performance of the glass fiber, reduces the production difficulty, and can realize industrial continuous production. 本发明提供了高强高模量玻璃纤维组合物、玻璃纤维和增强复合材料，涉及玻璃技术领域，高强高模量玻璃纤维组合物包括以摩尔百分比计的如下组分：SiO260～69％，Al