GLASS FIBER

摘要

PROBLEM TO BE SOLVED: To obtain AR glass fiber excellent in impregnating property of FRP to a matrix resin. SOLUTION: This glass fiber comprises >=14 wt.% ZrO2 and >=10 wt.% alkali metal oxide and the surface is treated by a sizing agent and the sizing agent contains an epoxy resin or epoxy resin emulsion having <=2 epoxy groups in one molecule, being liquid at 0-40 deg.C and not forming any film even when heat- treated.