Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
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Thermal/Humid Aging Properties of Urethane-coated Polyketone Fabrics with MDI Treatment

우레탄 코팅 폴리케톤 직물의 MDI 처리에 따른 열/수분 노화 특성

  • Jo, Hani (Department of Organic Materials Engineering, Chungnam National University) ;
  • Yang, Jee-Woo (Department of Organic Materials Engineering, Chungnam National University) ;
  • Eom, Seo Bin (Department of Organic Materials Engineering, Chungnam National University) ;
  • Lee, Seung Goo (Department of Organic Materials Engineering, Chungnam National University)
  • 조하니 (충남대학교 공과대학 유기소재.섬유시스템공학과) ;
  • 양지우 (충남대학교 공과대학 유기소재.섬유시스템공학과) ;
  • 엄서빈 (충남대학교 공과대학 유기소재.섬유시스템공학과) ;
  • 이승구 (충남대학교 공과대학 유기소재.섬유시스템공학과)
  • Received : 20180431
  • Accepted : 2018.05.22
  • Published : 2018.06.30
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Abstract

Polyketone is an environmentally friendly material because carbon monoxide produced as a byproduct of other processes can be used as a raw material for its production. Polyketone has excellent heat and impact resistance, and thus it is highly applicable to industrial fabrics, such as waterproof fabrics. On the other hand, polyurethane has been used as a coating material owing to its excellent abrasion, weather, and oil resistance, in addition to being waterproof. The waterproof properties of the fabric depend on the occurrence of defects on the resin-coated surface and the adhesion strength between the coating resin and fabric. In this study, the effects of environmental conditions, including temperature and humidity, on polyurethane-coated polyketone fabric systems were evaluated. The thermal and humid aging behaviors of the polyurethane-coated polyketone fabrics were investigated with methylene diphenyl diisocyanate (MDI) pretreatment. The surface of the polyketone fabric was pretreated with MDI following treatment conditions that were optimized in a previous study. The polyketone fabric was coated with polyurethane and aged under different thermal and humid conditions. In addition to tensile and tear strength measurements, the hydrostatic pressure of the polyketone/polyurethane coating system was measured to evaluate resistance to water penetration. Additionally, the adhesion strength between the polyurethane resin and polyketone fabric after thermal aging was analyzed by the T-peel test, and the fracture surface was observed using SEM. Further, XPS was used to confirm the surface chemical change after thermal aging, and the degree of discoloration of the polyurethane-coated polyketone fabrics after aging was measured with a colorimeter.

Keywords

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