Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)

The Korean Society of Applied Science and Technology (한국응용과학기술학회)
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Curing Reaction and Physical Properties of High-Solid Acrylic/Isocyanate Coatings

하이솔리드 아크릴/이소시아네이트 도료의 경화반응과 도막물성

  • Park, Hong-Soo (Department of Chemical Engineering, Myongji University) ;
  • Shim, Il-Woo (Department of Chemical Engineering, Myongji University) ;
  • Jo, Hye-Jin (Department of Chemical Engineering, Myongji University) ;
  • Kim, Seong-Kil (R&D Center, Samhwa Paints Ind. Co. Ltd.) ;
  • Kim, Myung-Soo (Department of Chemical Engineering, Myongji University)
  • 박홍수 (명지대학교 공과대학 화학공학과) ;
  • 심일우 (명지대학교 공과대학 화학공학과) ;
  • 조혜진 (명지대학교 공과대학 화학공학과) ;
  • 김성길 (삼화페인트공업(주)) ;
  • 김명수 (명지대학교 공과대학 화학공학과)
  • Published : 2005.12.31
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Abstract

In the previous study, three kinds of monomers and the functional monomer, acetoacetoxyethyl methacrylate (AAEM), which could improve the film property and cross-linkage, were polymerzied into acrylic resin copolymers (HSA-98-20, HSA-98-0, HSA-98+20) containing 80% solid content. In this study, the high-solid coatings(HSA-98-20C, HSA-98-0C, HSA-98+20C) were prepared by the curing reaction between acrylic resins containing 80% solid content and isocyanate at room temperature. Various properties were examined for the film coated with the prepared high-solid coatings. The introduction of AAEM in the coatings enhanced the abrasion resistance and solvent resistance of coatings, which indicated the possible use of high-solid coatings for top-coating materials of automobile. The curing times measured by viscoelastic measurement were 350, 264, and 212 min for HSA-98-20C, HSA-98-0C, and HSA-98+20C, respectively. This shows that the curing times become shorter with increasing $T_g$ values.

Keywords

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