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http://dx.doi.org/10.12925/jkocs.2004.21.4.5

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

Jo, Hye-Jin (Department of Chemical Engineering, Myongji University)
Shim, Il-Woo (Department of Chemical Engineering, Myongji University)
You, Hyuk-Jae (Department of Chemical Engineering, Myongji University)
Wu, Jong-Pyo (Department of Chemical Engineering, Myongji University)
Kim, Myung-Soo (Department of Chemical Engineering, Myongji University)
Hahm, Hyun-Sik (Department of Chemical Engineering, Myongji University)
Park, Hong-Soo (Department of Chemical Engineering, Myongji University)
Baik, Woon-Phil (Department of Chemistry, Myongji University)
Publication Information
Journal of the Korean Applied Science and Technology / v.21, no.4, 2004 , pp. 300-305 More about this Journal
Abstract
High-solid coatings were prepared by blending of previosly synthesized acrylic resins and hexamethylene diisocyanate-trimer and curing it at room temperature. The characterization of the films of the prepared coatings was performed. The impact resistance, cross-hatch adhesion, $60^{\circ}$specular gloss, 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. As a result of Rigid-body pendulum visco-elasticity measurement, dynamic $T_g$ values of cured films increased with dynamic $T_g$ values.
Keywords
acrylic resin; hexamethylene diisocyanate-trimer; high-solid coatings; visco-elasticity;
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