화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Polymer(Korea), Vol.41, No.4, 656-661, July, 2017
DOI10.7317/pk.2017.41.4.656  Export Citation
개질된 폐타이어 분말을 이용한 열가소성 폴리우레탄의 물성 개선
Improvement of the Physical Properties of the Thermoplastic Polyurethane Using a Modified Waste Tire Powder
강신혜1, 오지환1, 리시앙수1, 조을룡1, 2, †
  • 1한국기술교육대학교 에너지 신소재, 화학공학부
  • 2한국기술교육대학교 친환경고성능화학소재 연구소
Shin Hye Kang1, Ji-Hwan Oh1, Xiangxu Li1, and Ur Ryong Cho1, 2, †
  • 1School of Energy, Materials, Chemical Engineering, Korea University of Technology and Education, Korea
  • 2Research Center of Eco-friendly & High-performance Chemical Materials, Korea University of Technology and Education, 1600, Chungjeol-ro, Byungcheon-Myeon, Cheonan, Chungnam 31253, Korea
E-mail:
초록
열가소성 폴리우레탄(thermoplastic polyurethane, TPU)이 가지는 경제적, 환경적 문제를 해결함과 동시에 TPU 물성 개선을 위한 방안으로 TPU에 폐타이어 분말을 적용하였다. 사용된 폐타이어(waste tire rubber, WTR)는 폐타이어를 변안활성기계(metactivator)에 통과시킨 것으로, 열역학적으로 불안정하며 미세 균열 입자의 형태를 보이고, 가교결합은 끊어진 상태로 존재한다. 단순히 TPU와 WTR을 혼합한 복합체와 2-hydroxyethyl methacrylate와 dicumyl peroxide를 사용하여 가교를 형성시킨 복합체를 제조하였다. WTR의 구조를 FTIR로 관찰하고, TPU와 두 종류의 TPU/WTR 복합체를 DSC를 통해 유리전이온도(Tg)를 측정하였다. 가교로 개질된 TPU/WTR 복합체는 내수성, 내화학성이 크게 향상되었고, 극성 비양성자성 용매에서의 팽윤 특성 또한 우수하였다. 또한 저장탄성률의 증가와 함께 영구압축 줄음률 또한 크게 향상되었다.
To solve the economic and environmental problems of thermoplastic polyurethane (TPU), waste tire powder (WTR) was applied to improve the physical properties of TPU. The waste tire rubber is a waste tire that has passed through a metactivator and is thermodynamically unstable, showing the shape of microcracked particles, and the crosslinking is broken. The composites were prepared by simply mixing of TPU and WTR and a crosslinking agent using 2- hydroxyethyl methacrylate and dicumyl peroxide. The structure of WTR was observed by FTIR, and the glass transition temperature (Tg) of TPU and two kinds of TPU/WTR composites were measured by DSC. The modified TPU/WTR composites showed significant improvements in water resistance, chemical resistance, and swelling properties in polar aprotic solvents. As the storage modulus increased, the compression set was also remarkably improved.
Keywords:thermoplastic polyurethane;waste tire rubber;strain sweep;composites
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