Abstract
A new type of fiber reinforced thermoplastic intermediate material has been developed. It consists of reinforcing fiber roving and thermoplastic resin sheath. It has high flexibility and is easy to be woven and braided.The advantages of the material are high productivity of end products, possibility to reform, easy handling and easy stroring which are from the nature of thermoplastic, and also the flexibitity and protection of reinforcing fibers of the material leads to easy arranging and laying-up in the mold.Two applications of the new intermediate material have been developed, which are made use of the characteristics.New FRP bolts were made by reforming of GF-polyamid 6 pultruded rod, and proved higher strength compared to injection-molded bolt.CF-polyamid 6 belleville spring consisting of circumferential fibers and radial fibers could realize high spring constant and fatigue character at the same time.
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