접착 및 계면 (Journal of Adhesion and Interface)

  • 제11권3호
  • /
  • Pages.100-105
  • /
  • 2010
  • /
  • 1229-9243(pISSN)
  • /
  • 2233-8217(eISSN)
한국접착및계면학회 (The Society of Adhesion and Interface, Korea)
권호 표지

Monomeric Diol에 따른 수분산 폴리우레탄의 합성 및 특성

Synthesis and Properties of Polyurethane Dispersion Containing Monomeric Diol

  • 신상훈 (부산대학교 고분자공학과) ;
  • 정부영 (한국 신발.피혁 연구소) ;
  • 정일두 (부산대학교 고분자공학과) ;
  • 조남주 (부산대학교 고분자공학과) ;
  • 천정미 (한국 신발.피혁 연구소) ;
  • 천제환 (부산대학교 고분자공학과)
  • Shin, Sang-Hoon (Department of Polymer Science and Engineering, Pusan National University) ;
  • Jeong, Boo-Young (Korea Institute of Footwear and Leather Technology (KIFLT)) ;
  • Chung, Il Doo (Department of Polymer Science and Engineering, Pusan National University) ;
  • Jo, Nam-Ju (Department of Polymer Science and Engineering, Pusan National University) ;
  • Cheon, Jung-Mi (Korea Institute of Footwear and Leather Technology (KIFLT)) ;
  • Chun, Jae-Hwan (Department of Polymer Science and Engineering, Pusan National University)
  • 투고 : 2010.06.08
  • 심사 : 2010.08.24
  • 발행 : 2010.09.30
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초록

본 연구에서는 수분산 폴리우레탄에 영향을 미치는 여러 가지 요인을 알아보기 위해 monomeric diol의 종류, polyol/monomeric diol 몰비 및 dimethylolpropionic acid (DMPA)의 함량에 따라 수분산 폴리우레탄의 물성변화를 알아보았다. Polyester type polyol, 4,4-dicyclohexylmethane diisocyanate ($H_{12}MDI$), DMPA 그리고 monomeric diol을 반응시켜 prepolymer를 제조한 후 이를 연속상에 분산시켜 수분산 폴리우레탄을 합성하였다. 열적 특성에서 monomeric diol의 분자량, monomeric diol 함량 및 DMPA 함량이 증가함에 따라 $T_g$가 미세하게 증가하였다. 기계적 물성을 평가한 결과, monomeric diol의 분자량과 polyol/monomeric diol에서 monomeric diol의 함량 및 DMPA 함량이 증가함에 따라 인장강도는 증가하였다. 접착강도는 polyol/monomeric diol의 몰비가 8 : 2 일 때 가장 높은 값을 나타내었다.

In this study, polyurethane dispersion was prepared by polyester polyol, 4,4-dicyclohexylmethane diisocyanate ($H_{12}MDI$), dimethylolpropionic acid (DMPA), and monomeric diol. The effect of various monomeric diol, polyol/monomeric diol molar ratio and DMPA contents on the properties of polyurethane dispersion were investigated. As the molecular weight of monomeric diol and monomeric diol molar ratio increased, $T_g$ gradually increased. And when DMPA contents increased, also $T_g$ gradually increased. In the results of mechanical properties, when the molecular weight of monomeric diol, monomeric diol molar ratio of polyol/monomeric diol and DMPA contents increased, tensile strength was increased. Finally, optimum peel strength obtained when polyol/monomeric diol ratio was 8 : 2.

키워드

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