Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)

The Korean Society of Applied Science and Technology (한국응용과학기술학회)
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Physical Properties of High-Solid Coatings with Acrylic Resins Containing Acetoacetoxy Group and HDI-Trimer

Acetoacetoxy기 함유 아크릴수지와 HDI-Trimer에 의한 하이솔리드 도료의 도막물성

  • 유혁재 (명지대학교 공과대학 화학공학과) ;
  • 정동진 (명지대학교 공과대학 화학공학과) ;
  • 함현식 (명지대학교 공과대학 화학공학과) ;
  • 박홍수 (명지대학교 공과대학 화학공학과) ;
  • 김성길 (삼화페인트공업(주))
  • Published : 2003.09.30
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Abstract

The high-solid coatings were prepared by blending the synthesized acrylic resin in the previous paper and hexamethylene diisocyanate-trimer and curing it at room temperature. The characterization of the films of the prepared coatings was performed. The impact resistance, $60^{\circ}C$ specular gloss, cross-hatch adhension, and heat resistance of the films proved to be good, and the pencil hardness and drying time proved to be slightly poor. Especially, there was a remarkable improvement in the heat resistance. This improvement may stem from the regular arrangement of ethyl groups introduced into the acrylic resin. From a viscoelastic measurement using a rigid-body pendulum, curing was accelerated with the $T_g$ value. With the increase in $T_g$, log damp value was lowered and dynamic viscoelasic $T_g$ of a cured film was increased.

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References

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