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http://dx.doi.org/10.7473/EC.2019.54.1.30

Chemical Structure Effect of Diisocyanate on the Coating Performance of Polyurethane-based Gel-coats  

Park, Jin Hwan (Department of Polymer Science & Engineering, Dankook University)
Baek, Seung-Suk (Department of Polymer Science & Engineering, Dankook University)
Kim, Oh Young (Department of Polymer Science & Engineering, Dankook University)
Hong, Seheum (Department of Polymer Science & Engineering, Dankook University)
Park, Dong Hyup (Applied Polymer Research Center, Korea Conformity Laboratory)
Hwang, Seok-Ho (Department of Polymer Science & Engineering, Dankook University)
Publication Information
Elastomers and Composites / v.54, no.1, 2019 , pp. 30-34 More about this Journal
Abstract
Four different diisocyanates (IPDI; isophorone diisocyanate, HDI; hexamethylene diisocyanate, HMDI; dicyclohexylmethane-4,4'-diisocyanate, and XDI; m-xylylene diisocyanate) were used to prepare polyurethane gel-coats, and the weatherabilities, physical properties, and surface characteristics of the gel-coats were investigated with respect to the chemical structure of the diisocyanates. The weathering test results indicated that all of the diisocyanates used in this study were suitable for use in the preparation of the polyurethane gel-coat. However, the set-to-touch times and physical properties of the polyurethane gel-coat indicated that the cycloaliphatic diisocyanate (IPDI and HMDI) were ideal for the preparation of polyurethane gel-coats.
Keywords
gel-coat: polyurethane; diisocyanate; surface adhesion; coating performance;
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