Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
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Effect of Draw Ratio on the Properties of Metallocene-Catalyzed High Density Polyethylene Monofilaments for Mooring Rope

무어링 로프용 메탈로센 촉매 고밀도 폴리에틸렌 모노 필라멘트의 물성에 미치는 연신비의 영향

  • Ryu, Young-Su (Department of Organic Material Science and Engineering, Pusan National University) ;
  • Seo, Moo-Kyung (Haesung Enterprise Co., Ltd.) ;
  • Park, Eun-Jeong (Haesung Enterprise Co., Ltd.) ;
  • Bae, Jong-Young (LG Chem) ;
  • Lee, Young-Hee (Department of Organic Material Science and Engineering, Pusan National University) ;
  • Kim, Han-Do (Department of Organic Material Science and Engineering, Pusan National University)
  • 류영수 (부산대학교 유기소재시스템공학과) ;
  • 서무경 (해성엔터프라이즈(주)) ;
  • 박은정 (해성엔터프라이즈(주)) ;
  • 배종영 (엘지화학(주)) ;
  • 이영희 (부산대학교 유기소재시스템공학과) ;
  • 김한도 (부산대학교 유기소재시스템공학과)
  • Received : 2016.12.23
  • Accepted : 2017.02.15
  • Published : 2017.02.28
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Abstract

This study examined the effect of draw ratio on the properties of high density polyethylene (m-HDPE) prepared using a metallocene catalyst as mooring rope material for 20,000-30,000 ton ships (small and medium class ships). The density, crystallinity, crystallite size, crystalline orientation, melting enthalpy, and tensile modulus increased with increasing draw ratio from 8 to 14; however, the elongation at break decreased. The tensile strength of the m-HDPE filament increased significantly with increasing draw ratio up to 12 and then decreased a little. The reduction in tensile strength for the filament with draw ratio of 14 might be due to stress whitening. The various properties of the m-HDPE mono-filament with draw ratio of 14 prepared in this study (tensile strength: 8.0 g/d, elongation at break: 10.0%, tensile modulus: 104.5 g/d, water absorption: 0.19%, color fastness to sea water (grade): 4-5, chemical resistance: 82-94%) were found to pass the mooring rope material criteria for 20,000-30,000 ton ships (tensile strength: > 8 g/d, elongation at break: 10% <, tensile modulus: > 100 g/d, water absorption: 0.7% <, color fastness to sea water (grade): > 4, chemical resistance: > 80%).

Keywords

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