Preparation and characterization of waterborne polyurethane based on diphenylmethane diisocyanate-50

摘要

A new waterborne polyurethane was prepared using diphenylmethane diisocyanate-50. Properties of this waterborne polyurethane and the conventional isophorone diisocyanante-based waterborne polyurethane were tested. It was found that diphenylmethane diisocyanate-50-based waterborne polyurethane showed better properties compared to isophorone diisocyanante-based waterborne polyurethane. The films of diphenylmethane diisocyanate-50-based waterborne polyurethane had higher tensile strength than of isophorone diisocyanante-based waterborne polyurethane; their water resistance and thermal stability were also improved. And they have higher surface hydrophobicity compared with those of isophorone diisocyanante-based waterborne polyurethane. It's believed that diphenylmethane diisocyanate-50-based waterborne polyurethane has excellent application performance in many industrial fields. (c) 2016 Wiley Periodicals, Inc.