Fibers and Polymers

, 12:927 | Cite as

Warpage and mechanical properties of film insert molded parts with composite substrate

  • Soo Jin Baek
  • Seong Yun Kim
  • Jae Ryoun Youn
  • Kyeong Wung Kim


Mechanical properties of chopped carbon fiber (CF) reinforced PC/ABS composites were investigated. Tensile strength and elastic modulus of the composites were enhanced with increasing CF contents. On the contrary, impact strength of the composite was decreased with increasing CF fraction. Film insert molding was introduced in order to improve impact strength. Film insert molded composite specimens have higher impact strength than conventional injection molded composite specimens because inserted film acted as a cushion to absorb the impact energy. Large warpage which was observed after molding and known as a disadvantage of the film insert molded part can be prevented by controlling the amount of filled CFs. Therefore, fiber reinforcement and film insert molding can be applied simultaneously to reduce warpage of the film insert molded part and enhance impact strength of the CF reinforced composite.


Carbon fiber Composites Film insert molding Impact strength Tensile strength Warpage 


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Copyright information

© The Korean Fiber Society and Springer Netherlands 2011

Authors and Affiliations

  • Soo Jin Baek
    • 1
  • Seong Yun Kim
    • 1
  • Jae Ryoun Youn
    • 1
  • Kyeong Wung Kim
    • 2
  1. 1.Research Institute of Advanced Materials (RIAM), Department of Materials Science and EngineeringSeoul National UniversitySeoulKorea
  2. 2.Cresin Co. Ltd.Gyungsangbuk-DoKorea

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