Papers by Author: Teruo Kimura

Abstract: This report proposed the injection molding method of thermoplastic composite materials reinforced by the glass fiber extracted from FRP waste. Glass fiber was pre-treated by card machines and mixed with PP fiber. The sliver-type glass/PP mixture was fed into the injection molding machine directly. As a result, the glass fiber reinforced PP composites were obtained. The mechanical properties of the fiber reinforced composites were measured and discussed. It is concluded that the extracted glass fiber is good for the reinforcement of composite. The result suggests that the injection molding method described herein shows promise for contributing toward the material recycling of glass fiber extracted by the normal pressure dissolution method.

Abstract: In the textile industry, recently, it is urgent to develop the recycling system of the polyester fiber waste which results from the manufacturing process of sythetic fabric. However, most of the fiber wastes are destroyed by fire or buried underground. In this paper, the insulating composites which consist of polyester fiber wastes and PLA films are molded by compression molding method. In the process of preforming, the polyester fiber wastes are arrayed in uni-direction, and PLA films are inserted among layers of the polyester fiber wastes as binder. Namely, the polyester fiber wastes layers and PLA films are laminated alternately. In this paper, pitch (distance among the fiber wastes) and number of layers of polyester fiber wastes are varied, and the effect of pitch and number of layers of polyester fiber wastes on mechanical property and thermal insulating propertiy of the composites are discussed. As the result, it is concluded here that the melted state and the thickness of layers of PLA affect largely on the thermal conductivity and the bending strength of the boards.