Elastomers and Composites

The Rubber Society of Korea (한국고무학회)
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Effects of Filler Types and Content on Shrinkage Behavior of Polypropylene Composites

  • Jung, Chun-Sik (Materials Chemistry and Engineering Laboratory, Department of Polymer Science and Engineering, Dankook University) ;
  • Hwang, Seok-Ho (Materials Chemistry and Engineering Laboratory, Department of Polymer Science and Engineering, Dankook University)
  • Received : 2022.09.12
  • Accepted : 2022.09.21
  • Published : 2022.09.30
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Abstract

The effects of fillers [talc, calcium carbonate, glass fiber, and EBR (ethylene-butene rubber)] on the shrinkage and mechanical properties of injection-molded polypropylene composites were investigated. The shrinkage correlated with the shape of the filler particles: at the same amount added, glass fibers with a large aspect ratio had the greatest effect on the shrinkage of polypropylene composites, followed by flake-shaped talc and granular calcium carbonate. It was confirmed that the addition of EBR rubber as an impact strength modifier reduced shrinkage proportionally to the added content. In addition, the addition of glass fiber resulted in the greatest increases in tensile and flexural strengths.

Keywords

Acknowledgement

본 연구는 산업통상자원부의 "소재부품기술개발사업"(태양광 모듈용 고투과 열가소성 탄성소재, 과제번호: 20012770)의 지원을 받아 수행되었으며 이에 감사드립니다.

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