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Acetoacetoxy기 함유 아크릴수지와 HDI-Trimer에 의한 하이솔리드 도료의 도막물성 KCI 등재

Physical Properties of High-Solid Coatings with Acrylic Resins Containing Acetoacetoxy Group and HDI-Trimer

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한국응용과학기술학회지 (The Korean Society of Applied Science and Technology)
한국응용과학기술학회(구 한국유화학회) (The Korean Society of Applied Science and Technology (KSAST))
초록

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℃ 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 Tg value. With the increase in Tg, log damp value was lowered and dynamic viscoelasic Tg of a cured film was increased.

저자
  • 유혁재 | You, Hyuk-Jae
  • 정동진 | Chung, Dong-Jin
  • 함현식 | Hahm, Hyun-Sik
  • 박홍수 | Park, Hong-Soo
  • 김성길 | Kim, Seong-Kil