Composition for glass fiber, glass fiber containing composite containing glass fiber, glass fiber, and method for producing glass fiber

摘要

Problem: high modulus of elasticity, good productivity, and easy production of fine glass fiberProblem to be solved: to provide a composition for glass fiber which can be made.The composition of the glass fiber of the present invention is 100% by weight of the converted oxideWith a rate indication, SiO2 50 to 70%, Al2O3 15 to 25%, MgO 3 to 13%It is characterized by containing CaO. Sub.3 to 15% and b2o5 to 0.5%.No selection