| 摘要 |
PURPOSE:A composite material which has high vibration-damping property and can be used at higher temperature, comprising a reinforcing fiber and an epoxy resin containing modified polyethylene glycol. CONSTITUTION:A composite material comprising a reinforcing fiber (e.g., carbon fiber or glass fiber) and an epoxy resin (e.g., bisphenol A-derived epoxy resin) containing 10-40wt% amino group- or carboxyl group-terminated polyethylene glycol (hereinafter, abbreviated as modified PEG). This composite material can retain high vibration-damping property at high temperatures without exudation of the modified PEG because an epoxy resin containing polyethylene glycol having the modified PEG is used as the matrix resin. Besides, its strength and modulus are not less than those of a conventional composite material. Therefore, this composite material can be used effectively in the production of car stereo loud- speaker boxes, handles of electric drills, handles of chain saws, etc., for parts of an artificial satellite or as a structural material for automobiles, ships, etc. |
