Glass composition for glass fiber, glass fiber, glass fiber fabric and glass fiber reinforced resin composition

摘要

Provided is a glass composition for glass fibers having a low dielectric loss tangent and suppressing the occurrence of streaks. The glass composition for glass fibers contains SiO 2 in the range of 52.0 mass% or more and 56.0 mass% or less, B 2 O 3 in the range of 21.0 mass% or more and 24.5 mass% or less, and Al in the range of 9.5 mass% or more and 13.0 mass% or less, based on the total amount. 2 O 3 , MgO in the range of 0 mass% or more and less than 1.0 mass%, CaO in the range of 0.5 mass% or more and 5.5 mass% or less, SrO in the range of 0.5 mass% or more and 6.0 mass% or less, and 0.1 mass% or more and 3.0 mass% % TiO 2 is included in the range, and F 2 and Cl 2 are included in a total of 0.1 mass% or more and 2.0 mass% or less.