Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
권호 표지

Effects of Molding Conditions on the Fracture Toughness of Glass Fiber Reinforced Thermoplastic Composites

유리섬유강화 열가소성 복합재료의 성형조건이 파괴인성에 미치는 영향에 관한 연구

  • 양철곤 (성균관대학교 섬유공학과) ;
  • 이덕래 (전북대학교 섬유공학과(공업기술연구소)) ;
  • 이재호 (밀양산업대학교 견섬유학과)
  • Published : 1999.08.01

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Abstract

Although thermoplastic composites have many attractive physical properties including toughness and high strength, they have not been used widely due to poor processability. In this study, the unidirectional composites were fabricated under different molding pressures and holding time using parallel yarn which consists of 30, 40 and 50 volume percent of glass fiber. The mechanical properties of PET/GF composite were investigated by ILSS and DCB (double cantilever beam) methods. The relationship between molding conditions and mechanical properties were discussed. Moreover, observation of fracture surfaces using SEM clarified the influence of molding conditions on fracture behavior. As a result, it was also observed that severe increase in molding pressure caused extrusion of resin and increase in void fraction, which in turn to decrease in fracture toughness.

Keywords

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