Preparation of a New Waterborne Polyurethane Emulsion and its Properties Investigation
A new waterborne polyurethane emulsion is synthesized by prepolymerization. The effecting factors including the ratio of iso-cyanate content to hydroxyl groups (- NCO/- OH) , the reaction temperature and the carboxyl group content on target prepared emulsions viscosity; particle diameter and the water absorption are experimentally investigated during the reaction processes. The results show that: (1) The emulsion viscosity and water absorption are decreased when the - NCO/- OH ratio is increased, but the particle diameter is increased. (2) The reaction rate is increased when the temperature is increased, but the side reaction is more easily arisen. (3) The emulsion viscosity and water absorption are increased but the particle diameter is decreased when the carboxyl content the carboxyl group content is increased.
waterborne polyurethane viscosity particle diameter water absorption preparation
GUO Xue-li WANG Zheng-xiang ZHAO Shu-hui DU Jing-jing HOU Qing-lin HE Quan-guo
Green Packaging and Biological Nanotechnology Laboratory, Hunan University of Technology, Zhuzhou 41 Department of Chemistry, Zhengzhou University, Zhengzhou 450052, China
国际会议
北京
英文
223-224
2006-08-03（万方平台首次上网日期，不代表论文的发表时间）