| 摘要 |
An acoustical and thermally absorbent chopped strand mat formed of thermoplastic bonding materials and bundles of reinforcing fibers is provided. The reinforcing fibers are preferably wet use chopped strand glass fibers (WUCS). The thermoplastic bonding materials may be any thermoplastic or thermosetting material having a melting point less than the reinforcing fiber. The chopped strand mat may be formed by partially opening the WUCS fibers and filamentizing the thermoplastic bonding materials, blending the reinforcement and thermoplastic bonding fibers, forming the reinforcement and thermoplastic bonding fibers into a sheet, and bonding the sheet. During bonding, the sheet is heated to a temperature above the melting point of the thermoplastic bonding fibers but below the temperature of the glass fibers. The melted thermoplastic bonding fibers act as a glue to hold the glass fibers in bundles. The chopped strand mat thus formed may be used as a reinforcement material in automotive applications. |
