Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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A Study on Silane Crosslinking Process of Polypropylene for Enhanced Impact Strength

실란 가교 반응을 이용한 폴리프로필렌의 충격강도 향상에 관한 연구

  • Kang, Min-Soo (Material Research Part, Research Team, R&D Center, Hanil E-HWA CO. LTD.) ;
  • Park, Sung-Ho (Material Research Part, Research Team, R&D Center, Hanil E-HWA CO. LTD.) ;
  • Kim, Ki-Sung (Material Research Part, Research Team, R&D Center, Hanil E-HWA CO. LTD.) ;
  • Bae, Jong-Rak (Material Research Part, Research Team, R&D Center, Hanil E-HWA CO. LTD.) ;
  • Jeon, Oh-Hwan (Material Research Part, Research Team, R&D Center, Hanil E-HWA CO. LTD.)
  • 강민수 (한일이화(주) 연구팀 소재연구파트) ;
  • 박성호 (한일이화(주) 연구팀 소재연구파트) ;
  • 김기성 (한일이화(주) 연구팀 소재연구파트) ;
  • 배종락 (한일이화(주) 연구팀 소재연구파트) ;
  • 전오환 (한일이화(주) 연구팀 소재연구파트)
  • Received : 2009.06.15
  • Accepted : 2009.11.16
  • Published : 2010.05.01
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Abstract

The melt grafting of unsaturated silanes onto polypropylene (PP) in a twin-screw extruder and crosslinking in hot water were studied to enhance impact strength of polypropylene. The influence of grafting formulations on the melt flow rates of grafted PP and the gel percentages of crosslinked PP was investigated. 3-methacryloylpropyltrimethoxysilane (VMMS) unsaturated silane monomer was used. Benzoyl peroxide, (BPO) and Dicumyl peroxide (DCP) were used as an initiator. When benzoyl peroxide (BPO) was used as an initiator, higher gel percentage and impact strength than those of DCP has been observed. The maximum impact strength was obtained with 0.7 phr of BPO and 2phr of VMMS. The value is 8.7 kgf-cm/cm and it is on a parity with the value of with 20 phr of EOR mixed to PP.

Keywords

References

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