Journal of Adhesion and Interface (접착 및 계면)

The Society of Adhesion and Interface, Korea (한국접착및계면학회)
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Study on the Properties of UV-curable Polyurethane acrylate with reactive diluents content

자외선 경화형 폴리우레탄 아크릴레이트 수지의 반응성 희석제 함량에 따른 물성 연구

  • Sim, Jae Hak (Hybrid materials research division, Korea Institute of Footwear & Leather Technology) ;
  • Seo, Eun Sun (Hybrid materials research division, Korea Institute of Footwear & Leather Technology) ;
  • Lee, Won Young (Hybrid materials research division, Korea Institute of Footwear & Leather Technology) ;
  • Kim, Gu Ni (Hybrid materials research division, Korea Institute of Footwear & Leather Technology)
  • 심재학 (한국신발피혁연구원(KIFLT) 하이브리드소재연구실) ;
  • 서은선 (한국신발피혁연구원(KIFLT) 하이브리드소재연구실) ;
  • 이원영 (한국신발피혁연구원(KIFLT) 하이브리드소재연구실) ;
  • 김구니 (한국신발피혁연구원(KIFLT) 하이브리드소재연구실)
  • Received : 2017.10.25
  • Accepted : 2017.12.04
  • Published : 2017.12.31
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Abstract

In this study, we synthesized UV-curable urethane acrylates with different contents of BA, reactive diluent and characterized their physical properties such as thermal, mechanical properties, adhesive strength and flexibility resistance. From a result of DSC, Tg of polyol and acrylate resin were separated as the BA content increased more than 40%. Also, tensile strength, elongation and adhesive strength decreased with increasing the BA content. The UV-curable urethane acrylate with 40% BA has shown good flexibility resistance compared to other resin due to poor hardness and Tm of acrylate resin.

본 연구에서는 반응성 희석제로 사용되는 BA의 함량에 따른 자외선 경화형 폴리우레탄 아크릴레이트 수지를 제조하여 수지의 열적 기계적 성질, 접착강도, 굴곡성을 확인하였다. BA의 함량이 40% 이상으로 증가할수록 Polyol의 Tg와 아크릴 수지의 Tg가 분리되어 나타난 것을 DSC로 통해 확인하였다. 또한 BA의 함량이 증가할수록 아크릴 수지의 낮은 기계적인 물성이 주도적으로 발현되어 인장강도와 신장률, 접착강도가 감소하는 것으로 나타났다. 굴곡성을 평가한 결과 BA의 함량이 40%인 경우 경도가 낮으면서 다른 수지에 비해 Tm이 낮아 굴곡성이 우수한 것으로 나타났다.

Keywords

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