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http://dx.doi.org/10.17702/jai.2015.16.1.22

Synthesis and Properties of Waterborne Polyurethane Using Epoxy Group (WPUE)  

Park, Ji-Yeon (Korea Institute of Footwear and Leather Technology (KIFLT))
Jeong, Boo-Young (Korea Institute of Footwear and Leather Technology (KIFLT))
Cheon, Jung-Mi (Korea Institute of Footwear and Leather Technology (KIFLT))
Ha, Chang-Sik (Department of Polymer Science and Engineering, Pusan National University)
Chun, Jae-Hwan (Korea Institute of Footwear and Leather Technology (KIFLT))
Publication Information
Journal of Adhesion and Interface / v.16, no.1, 2015 , pp. 22-28 More about this Journal
Abstract
In this study, Waterborne polyurethanes (WPU) using Epoxy group were synthesized with polyester polyol, epoxy resin, 4,4-dicyclohexylmethane diisocyanate ($H_{12}MDI$), dimethylol propionic acid (DMPA) to improve the hydrolysis resistance and adhesion. In addition, the properties of the synthesized waterborne polyurethane was evaluated through DSC, UTM, adhesion strength. Tg of the synthesized waterborne polyurethane is shown in the vicinity of $-50^{\circ}C$. Tg were increased with as epoxy resin contents increased. The tensile strength was increased as the content of epoxy resin increases, elongation was decreased. Optimum adhesion and hydrolysis-resistance strength were obtained when polyol : epoxy ratio was 99 : 1.
Keywords
waterborne polyurethane; epoxy; polyester polyol; adhesive;
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