Low dielectric constant glass fiber

摘要: (57) [Summary] [Object] An object of the present invention is to provide a low dielectric constant glass fiber having 6.0 or less and good acid resistance equal higher than that E glass. [Structure] The has weight percentage SiO 2 50.0 65.0% Al O 3 1. 0.0~18.0%, B 11.0~25.0 %, MgO 0-10.0%, CaO 0-10.0 + 1.0-15.0%, ZnO 0- 10.0%, SrO 0 BaO 1.0 It composition ˜10.0%.