Preparation and properties of crosslinkable waterborne polyurethanes containing aminoplast |
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Authors: | Ji Yun Kwon Mohammad Mizanur Rahman Han Do Kim |
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Institution: | (1) Department of Textile Engineering, Pusan National University, 609-735 Busan, Korea |
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Abstract: | In order to improve the water swelling, thermal/mechanical and adhesion properties of waterborne polyurethane (WBPU), a series
of the crosslinkable WBPUs containing hydrophilic ionic component, dimethylol propionic acid (20 mole%), were prepared by
in-situ polymerization using a cross-linker hexakis (methoxymethyl) melamine (HMMM). Effects of the HMMM content (2, 4, and
6 wt%) and curing temperature on these properties of the crosslinked WBPUs samples were investigated. All properties were
found to increase with increasing HMMM content. It was found that the optimum curing temperature of the WBPU films and adhesives
was near 120°C, which was not dependent on the HMMM content. |
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Keywords: | Crosslinking Waterborne-polyurethanes Aminoplast Curing temperature |
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