VIBRATION-DAMPING MATERIAL

摘要

PURPOSE:A vibration-damping material excellent in vibration-damping performance in a wide range of temperature and moldability, prepared by impregnating a (non)woven fabric with a liquid composition containing a specified unsaturated resin, a radical-polymerizable monomer and a radical polymerization initiator and molding and curing it. CONSTITUTION:A liquid composition is obtained by adding 0.005-0.1pt.wt. polymerization initiator and 0.3-3.0wt% radical-polymerization initiator (e.g., methyl ethyl ketone peroxide) to 100pts.wt. total of 30-100wt% unsaturated resin having at least two radical-polymerizable unsaturated groups and containing at least 20wt% 4C or higher alkylene (ether) groups and 5-70wt% radical-polymerizable monomer (e.g., styrene). A (non)woven fabric of an organic fiber or an inorganic fiber is impregnated with the above composition and heated to 80-160 deg.C under a pressure of 10-200kg/cm<2> to mold and cure it.