Quartz glass fiber-containing prepreg quartz glass fiber-containing film and quartz glass fiber-containing substrate

摘要

The present invention relates to a quartz glass fiber-containing prepreg, comprising (A) a quartz glass fiber and (B) a curable resin composition, wherein at least one of the following conditions is met: (1) the quartz glass fiber contains an α-ray level of 0.005c/cm^2·hr or less, and contains 1 ppm or less of each of metal ions, Na^+, Li^+, and K^+; (2) the number of pores in the quartz glass fiber is 10 or less per unit surface area, m^2; and (3) the quartz glass fiber-containing prepreg has a tolerant flexural strength of 500 N·m^2 or higher when the thickness as measured by a method described in JIS R 3420:2013 is 100-200 μm. Accordingly, the present invention may provide a quartz glass fiber-containing prepreg having excellent dielectric properties, excellent thermal resistance, and/or excellent handling properties due to high flexural strength.