Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)

The Korean Society of Applied Science and Technology (한국응용과학기술학회)
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Application of Acrylic Resins Containing Acetoacetoxy Group and 90% Solid Contents to High-Solid Coatings

아세토아세톡시기 함유 90% 고형분인 아크릴수지의 하이솔리드 도료에의 적용

  • Park, Hong-Soo (Department of Chemical Engineering, Myongji University) ;
  • Kim, Bo-Bae (Department of Chemical Engineering, Myongji University) ;
  • Kim, Ji-Hyun (Department of Chemical Engineering, Myongji University) ;
  • Park, Eun-Su (Department of Chemical Engineering, Myongji University) ;
  • Yoon, Hyun-Don (Department of Chemical Engineering, Myongji University) ;
  • Lee, Young-Jun (Department of Chemical Engineering, Myongji University) ;
  • Yeon, Je-Won (Department of Chemical Engineering, Myongji University) ;
  • Ka, Eun-Ji (Department of Chemical Engineering, Myongji University) ;
  • Lee, Ji-Soo (Department of Chemical Engineering, Myongji University)
  • 박홍수 (명지대학교 공과대학 화학공학과) ;
  • 김보배 (명지대학교 공과대학 화학공학과) ;
  • 김지현 (명지대학교 공과대학 화학공학과) ;
  • 박은수 (명지대학교 공과대학 화학공학과) ;
  • 윤현돈 (명지대학교 공과대학 화학공학과) ;
  • 이영준 (명지대학교 공과대학 화학공학과) ;
  • 연제원 (명지대학교 공과대학 화학공학과) ;
  • 가은지 (명지대학교 공과대학 화학공학과) ;
  • 이지수 (명지대학교 공과대학 화학공학과)
  • Published : 2008.09.30
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Abstract

In order to synthesize high-solid coatings, acrylic resins (HSAs) containing 90% solid content were first synthesized, then the synthesized HSAs were cured with a curing agent, isocyanate, at room temperature to obtain high-solid coatings. In the HSAs synthesis, conversion was in a range of $82{\sim}87%$, and viscosities and number-averaged molecular weight ($M_n$) of the HSAs were in a range of $4380{\sim}8010$ cP and $1540{\sim}1660$, respectively. From the correlation between $T_g$ value, viscosity and $M_n$, it was found that, with increasing $T_g$ value, viscosity increases rapidly and molecular weight increases slowly. From the visco-elasity measured by the pendulum method, it was found that the curing time decreased with increasing $T_g$ values. From the tests of physical properties of the coatings' film, $60^{\circ}$ specular gloss, impact resistance and heat resistance were proved to be good and pencil hardness, drying time and pot-life were proved to be poor.

Keywords

References

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