Papers by Keyword: Thermoplastic Composite Materials

Abstract: Through orthogonal analysis test analyzed three main process parameters(Acupuncture frequency, acupuncture number and acupuncture depth) on the influence of the preparation of Natural Bamboo Fiber/ Polypropylene fiber non-woven materials. The results show that when Acupuncture frequency, acupuncture number and acupuncture depth are 7.8mm\550/min\6 Composite material performance is the best; Acupuncture depth for material mechanics performance influence is the largest

Abstract: According to Natural Bamboo Fiber/ Polypropylene fiber(PP) non-woven materials encountered the problem that its flame retardation is insufficient, this paper tried to add flame retardant to improve its performance, then the cone calorimeter was used to evaluate its flammability. The results show that Peak-Heat Release Rate and Smoke Release Rate etc significantly improved. In accordance with the UL94 ,the flame retardation meet the level V-0 , consistent with the requirements of enterprise.

Abstract: The possibility of applying optical fibers as sensors for investigation of real time low energy impact damage in laminar thermoplastic composite materials has been studied. For that purpose intensity based optical fibers were embedded in composite material specimens. Kevlar 129 (DuPont’s registered trade-mark for poly (p-phenylene terephthalamide)) woven fabric was used as reinforcement. Impact toughness testing by the Charpy impact pendulum was conducted in order to investigate low energy impacts. Transient intensity of optical signal during the impact, were compared with material crack initiation energy and crack propagation energy. Following this approach, development of damage in material was monitored. Obtained results show that intensity based optical fibers could be used as detectors for material damage appearance, and also, for level evaluation of its degradation caused by low energy impacts.