Synthesis and Application of Blocked Waterborne Polyurethane Crosslinker

DOI

10.2991/mebe-15.2015.191How to use a DOI?

Keywords

Blocked Polyurethane; Waterborne Polyurethane; Crosslinker; Synthesis; Application

Abstract

In this paper, the blocked waterborne polyurethane crosslinker were prepared by polyaddition reaction with isophorone diisocyanate (IPDI), polypropylene glycol-2000 (PPG MW2000) and dimethylolpropionic acid (DMPA) as internal emulsifier, sodium bisulfite (NaHSO3) as blocked agent in presence of dibutyltin dilaurate (DBTDL) as catalyst. The Fourier transform infrared spectrum analysis (FT-IR) showed that the isocyanate groups of blocked waterborne polyurethane crosslinker are completely blocked. The differential scanning calorimetry (DSC) analysis showed that the deblocking temperature of blocked waterborne polyurethane crosslinker is between 88.3 ~92.4 . Application results showed that the blocked waterborne polyurethane crosslinker can significantly improve the tensile strength and water resistance of waterborne polyurethane membrane.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Xingyuan Ma
AU  - Xiaohan Qiu
AU  - Shufang Zhang
PY  - 2015/04
DA  - 2015/04
TI  - Synthesis and Application of Blocked Waterborne Polyurethane Crosslinker
BT  - Proceedings of the 2015 International Conference on Materials, Environmental and Biological Engineering
PB  - Atlantis Press
SP  - 855
EP  - 859
SN  - 2352-5401
UR  - https://doi.org/10.2991/mebe-15.2015.191
DO  - 10.2991/mebe-15.2015.191
ID  - Ma2015/04
ER  -