Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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The Influence of Soft/Hard Segment Composition and Content on the Abrasion Resistance of Polyurethane Coating Agents

폴리우레탄 코팅제에 있어서 Hard Segment와 Soft Segment의 조성 및 함량변화가 내마모성에 미치는 영향

  • 손형석 (유일고무 개발관리팀) ;
  • 전동근 (유일고무 개발관리팀) ;
  • 박성진 (인코켐 기술연구소) ;
  • 김용성 (인코켐 기술연구소) ;
  • 권귀택 (인코켐 기술연구소) ;
  • 김기수 (울산테크노파크 정밀화학소재기술연구소)
  • Received : 2013.06.21
  • Accepted : 2014.02.11
  • Published : 2014.07.01
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Abstract

Weatherstrip coatings of urethane and silicon type which are fit to EPDM and thermoplastic materials are used in sealing systems for automotive applications for noise reduction and high slip characteristics for external applications, respectively. Polyurethane binder was successfully synthesized from poly(butyladiphate)diol (PBAD), poly(tetramethylene)glycol (PTMG) and isocyanate as starting materials. Then, polyurethane coating agents were prepared by using various additives. To investigate effects of segment types on the abrasion resistance of polyurethane coating agents, thin films based on polyurethane coating materials were fabricated. With increasing the amount of hard segment in the coating agent, abrasion resistance, modulus and tensile strength of the coating films were improved, but the elongation of the coating films was decreased.

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References

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