Self-curing behaviors of single pack aqueous-based polyurethane system

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Title:	Self-curing behaviors of single pack aqueous-based polyurethane system
Other Titles:	單液水性PU系統之自行架橋行為
Authors:	Chen, Guan-Nan;Chen, Kan-nan
Contributors:	淡江大學化學學系
Keywords:	anionic aqueous-based polyurethane;self-curing;aziridinyl latent curing agent
Date:	1997-03-21
Issue Date:	2009-11-04 16:53:50 (UTC+8)
Publisher:	John Wiley & Sons
Abstract:	A di- or triaziridinyl compound served as the latent curing agent for the prepared carboxylic groups containing aqueous-based polyurethane (PU) dispersions. It was formulated as a single pack self-curable aqueous-based PU system. This system was stable under an alkaline environment and its curing reaction could be initiated by a pH control. A model reaction between a monoaziridinyl compound and formic acid was demonstrated and identified by infrared spectrophotometry. The stabilities of this convenient one-package PU system with a different dosage of di- or triaziridinyl latent curing agent were monitored by a particle sizer and fluorescence spectroscopy. The PU films were cast and self-cured from these single pack PU dispersions at ambient temperature. The physical and mechanical properties as well as thermal behaviors of each self-cured PU were evaluated.
Relation:	Journal of Applied Polymer Science 63(12), pp.1609-1623
DOI:	10.1002/(SICI)1097-4628(19970321)63:12<1609::AID-APP12>3.0.CO;2-V
Appears in Collections:	[Graduate Institute & Department of Chemical and Materials Engineering] Journal Article

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