Paper Title:
Properties of Waterborne Polyurethanes: Effect of NCO/OH Ratio
  Abstract

Waterborne polyurethanes(WPUs) based on isophorone diisocyanate(IPDI), Polybutylene adipate (PBA) and dimethylolproprionic acid(DMPA) were synthesized by prepolymer mixing process. Effect of NCO/OH ratio on the properties of the dispersions was studied. The structure of the WPUs was studied by FT-IR. Besides the mechanical properties and water swelling of the films, the number average diameters of the dispersions and the viscosity of WPUs were characterized, results showed that all WPUs had higher solid content (over 45%). With higher NCO/OH ratio, WPUs had bigger dispersion size and lower dispersion viscosity; the casting film had higher water swelling, lower tensile strength, and more water-soluble substance.

  Info
Periodical
Advanced Materials Research (Volumes 284-286)
Chapter
Composites
Edited by
Xiaoming Sang, Pengcheng Wang, Liqun Ai, Yungang Li and Jinglong Bu
Pages
624-627
DOI
10.4028/www.scientific.net/AMR.284-286.624
Citation
Y. B. Jiu, X. M. Zeng, J. H. Ji, Y. Zhai, L. C. Wang, "Properties of Waterborne Polyurethanes: Effect of NCO/OH Ratio", Advanced Materials Research, Vols. 284-286, pp. 624-627, 2011
Online since
July 2011
Export
Price
$32.00
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