The day before, Japan’s new energy and Industrial Technology Development Organization (NEDO) and the Nagoya University national composite material research center (National Composite Center, NCC) the success of the world’s first carbon fiber reinforced thermoplastic composites for automobile chassis development.
The LFT-D process uses “the parts” (thermoplastic composite molding directly online automatic long fiber), continuous carbon fiber and thermoplastic resin particles are mixed, keep the carbon fiber length is longer, after molding, the manufacture of fiber in a short time enhancement method of composite material. Because the process eliminates the intermediate steps required by autoclave, it is possible to build continuous automatic production system from thermoplastic resin and carbon fiber to the final product, so as to achieve short time molding. In addition, by making full use of the weldability of thermoplastic CFRP and heating the melting connection, all the automotive chassis made of thermoplastic CFRP has been successfully produced. The ultrasonic welding system is constructed by the robot, and the high-speed connection of complex structure is realized.
In the automotive industry, due to the long fiber reinforced thermoplastic composite material has a low density (1.1 ~ 1.4g/cm3), and has good mechanical properties, the tensile strength, elastic modulus, impact toughness, heat resistance and creep resistance were significantly better than that of short fiber reinforced thermoplastic plastic, especially the structure the impact of high performance and are usually designed for automobiles and semi structural parts, such as: front and rear energy absorbing bumper, front module frame, dashboard frame, front and rear seat frame, door module frame, the spare tire warehouse, battery box and body bottom plate and insulation cover etc.. In recent years, some of the back door structural boards and treadle boards in some cars have been made of LFT-D materials, and their applications have been constantly innovating and expanding.