Textile Coloration and Finishing (한국염색가공학회지)

The Korean Society of Dyers and Finishers (한국염색가공학회)
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Properties of Randomly Oriented Chopped E-glass Reinforced Unsaturated Polyester Based Resin Composite -Effect of Length/Content of E-Glass Fiber and Number of Stacking-

랜덤상태의 E-유리 단섬유 강화 불포화 폴리에스터 기반 수지 복합재료의 물성 - E-유리 단섬유의 길이와 함량 및 적층수의 영향 -

  • Park, Jin-Myung (Department of Organic Material Science and Engineering, Pusan National University) ;
  • Park, Young-Gwang (Department of Organic Material Science and Engineering, Pusan National University) ;
  • Lee, Young-Hee (Department of Organic Material Science and Engineering, Pusan National University) ;
  • Seo, Dae-Kyung (Korea Dyeing and Finishing Technology Institute) ;
  • Lee, Jang-Hun (Korea Dyeing and Finishing Technology Institute) ;
  • Kim, Han-Do (Department of Organic Material Science and Engineering, Pusan National University)
  • 박진명 (부산대학교 유기소재시스템공학과) ;
  • 박영광 (부산대학교 유기소재시스템공학과) ;
  • 이영희 (부산대학교 유기소재시스템공학과) ;
  • 서대경 (DYETEC연구원) ;
  • 이장훈 (DYETEC연구원) ;
  • 김한도 (부산대학교 유기소재시스템공학과)
  • Received : 2015.07.27
  • Accepted : 2015.09.22
  • Published : 2015.09.27
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Abstract

To develop automobile parts, the unsaturated polyester based matrix resin(PR)/reinforcement(randomly oriented chopped E-glass fiber, GF) composites were prepared using sheet molding compound(SMC) compression molding. The effects of GF length(0.5, 1.0 1.5 and 2.0inch)/content (15, 20, 25, 30wt%) and number of ply(3, 4 and 5) on the specific gravity and mechanical properties of PR/GF composites were investigated in this study. The optimum length of GF was found to be about 1.0inch for achieving improved mechanical properties(tensile strength and initial modulus). The tensile strength and initial modulus of composites increased with increasing GF content up to 30wt%, which is favorable content range for SMC. The specific gravity, tensile strength/initial modulus, compressive strength/modulus, flexural strength/modulus and shear strength increased with increasing the number of ply up to 5, which is the maximum number of ply range for SMC. The effectiveness of ply number increased in the flexural strength > shear strength > compressive strength > tensile strength.

Keywords

References

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