| abstract |
The resin-impregnated base substrate is provided by impregnating the sheet into the aromatic liquid crystal polyester solution composition such that the polyester is impregnated into the sheet and removing the solvent. The composition contains 20 to 50 parts by weight of aromatic liquid crystalline polyester and 100 parts by weight of aprotic solvent free of halogen atoms, wherein the sheet is made of polyolefin resin fibers, fluorocarbon resin fibers, aramid resin fibers, glass fibers, ceramics And fibers selected from the group consisting of fibers and carbon fibers. |