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http://dx.doi.org/10.12925/jkocs.2006.23.3.12

Effect of Isocyanate Curing Agents on the Physical Properties and Flame Retardancy of Flame-Retardant PU Coatings  

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)
Hahm, Hyun-Sik (Department of Chemical Engineering Myongji University)
Kim, Young-Geun (Korea Institute of Construction Materials)
Publication Information
Journal of the Korean Applied Science and Technology / v.23, no.3, 2006 , pp. 264-271 More about this Journal
Abstract
PU type flame-retardant coatings (TBAO/L-75, TBAOL ; TBAO/N-100, TBAON) were prepared by blending bromine-containing modified polyester (TBAO) which was synthesized in our earlier work. with two kinds of isocyanate curing agents, Desmodur L-75 and Desmodur N-100. Physical properties of the prepared flame-retardant coatings were tested. TBAOL shows better hardness than TBAON, while TBAON shows better viscosity, accelerated weathering resistance, yellowness index and lightness index difference than TBAOL. There were no remarkable differences in fineness of grind, $60^{\circ}$ specular gloss, cross-hatch adhesion, and abrasion resistance of TBAOL and TBAON. There was no discernable difference in flame-retardancy between the two flame-retardant coatings, TBAOL and TBAON. When the content of tribromo acetic acid, which is flame-retarding component, was 30wt% the LOI value was in a range of $29{\sim}30%$, which indicates that the two coatings are good flame-retardant coatings.
Keywords
modified polyester; curing agent; polyurethane coatings; flame retardancy;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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