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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-

  • Textile Coloration and Finishing
  • Abbr : Text. Color. and Finish.
  • 2015, 27(3), pp.165-174
  • Publisher : The Korean Society Of Dyers And Finishers
  • Research Area : Engineering > Fiber Engineering > Dyeing Engineering

박진명 1,  박영광 1,  Young-Hee Lee 1,  서대경 2,  Jang Hun Lee 2,  Han-Do Kim 1

1부산대학교
2DYETEC연구원

Accredited

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.

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