접착 및 계면 (Journal of Adhesion and Interface)

  • 제23권1호
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  • Pages.8-16
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  • 2022
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  • 1229-9243(pISSN)
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  • 2233-8217(eISSN)
한국접착및계면학회 (The Society of Adhesion and Interface, Korea)
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폴리카보네이트계 및 폴리에테르계 폴리올 기반 자가치유 기능 수분산 폴리우레탄 합성과 특성

Synthesis and Self-healing Properties of Waterborne Polyurethane Based on Polycarbonate and Polyether Polyol

  • 권선영 (부산대학교 고분자공학과) ;
  • 박수용 (부산대학교 고분자공학과) ;
  • 백인규 (한국신발피혁연구원) ;
  • 정일두 (부산대학교 고분자공학과)
  • Kwon, Seon-Young (Department of Polymer Science and Engineering, Pusan National University) ;
  • Park, Soo-Yong (Department of Polymer Science and Engineering, Pusan National University) ;
  • Paik, In Kyu (Korea Institute of Footwear & Leather Technology) ;
  • Chung, Ildoo (Department of Polymer Science and Engineering, Pusan National University)
  • 투고 : 2022.02.03
  • 심사 : 2022.03.11
  • 발행 : 2022.03.30
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초록

본 연구에서는 폴리올의 혼합으로 폴리우레탄의 물성 저하를 보완하고자 하였다. 신발 및 소재 코팅용으로서 자가치유 기능을 가지는 수분산 폴리우레탄 수지를 합성하기 위해 내구성 및 내열성이 우수한 polyether 폴리올과 기계적 물성이 뛰어난 polycarbonate 폴리올을 병용하여 합성하였으며, 자가치유 기능의 부여를 위해 disulfide기를 도입하였다. 합성된 자가치유 기능 수분산 폴리우레탄은 fourier transform-infrared spectroscopy (FT-IR)을 통해 확인되었으며, universial testing machine (UTM)과 scanning electron microscope (SEM) 측정을 통해 물리적 특성 및 자가치유 특성을 확인하였다. Polycarbonate 폴리올을 병용함으로써 인장강도 및 경도가 증가하였고, 신장율은 감소하였다. 또한 열적 특성의 비교 결과, polycarbonate 폴리올의 함량이 증가함에 따라 열 안정성이 증가하였다. 치료효율은 poly(tetramethylene ether)glycol : polycarbonate polyol = 0.75 : 0.25일 때 가장 높은 효율을 보여주었으며, 현미경 및 SEM을 이용한 표면 관찰을 통해 손상 부분이 치유된 것을 확인하였다.

In this study, self-healable waterborne polyurethane (SH-WPU) as shoes and coating materials with self-healable disulfide functionalities was synthesized by mixing polyether polyol to impart excellent durability and heat resistance and polycarbonate polyol to impart excellent mechanical properties. The synthesized SH-WPU was characterized by fourier transform-infrared spectroscopy (FT-IR), and physical and self-healing properties were confirmed through universal testing machine (UTM) and scanning electron microscope (SEM) measurements. Tensile strength and hardness were increased and elongation was decreased by using polycarbonate polyol. In addition, as a result of comparison of thermal properties, thermal stability has been increased as the content of polycarbonate polyol increased. The healing efficiency showed the highest efficiency when poly(tetramethylene ether)glycol : polycarbonate polyol = 0.75 : 0.25, and it was confirmed that the damaged part was healed through surface observation using a microscope and SEM.

키워드

과제정보

본 연구는 산업통상자원부 소재부품기술개발-전략핵심소재자립화기술개발사업(과제번호 20011422, 반복피로가 우수한 유연 디스플레이 기판용 탄성소재)와 중소벤처기업부의 창업성장기술개발사업[과제번호 S2881051, 전기자동차 배터리셀 고정을 위한 내충격 양면테이프용 저 VOC 접착소재 및 제조기술 개발]과 부산대학교 4단계 BK21 대학원 혁신사업에 의하여 연구되었음.

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