Preparation and Properties of Epoxy resin Modified Waterborne Polyurethane
The 4,4-diphenyl methane diisocyanate(MDI), polyethylene glycol (PEG)and epoxy resin(EP-44 and EP-51) were selected to prepare series of water polyurethane modified by epoxy resin(EWPU) by using chain extender, catalyst, and neutralizer.The influence of such factors as the R (NCO/OH), the contents of DMPA and epoxy resin on the performance of emulsion and film were discussed in details.The results shows that when R was 1.7, DMPA content was 7%, epoxy resin content was 8%, the EWPU emulsion appears brilliantly and shows great stability, it was measured that the water absorption, tensile strength and breaking elongation of the film are respectively 8.41%, 15.52MPa and 318%.Moreover, the comprehensive performance of the WPU modified by E-44 is better than that modified by E-51.According to the FTIR analysis, the EP has been successfully introduced to the waterborne polyurethane molecular chain.
water-borne polyurethane epoxy resin emulsion property water resistance tensile strength
Biao Zhan Qing-shan Li Wei Hong Yu-ze Xia Guo-wei Wang Guang-zhong Xing
State Key Laboratory of Metastable Materials Science and Technology,Yanshan University,Qinhuangdao 066004,China
国际会议
2012 China Functional Materials Technology and Industry Forum(2012中国功能材料科技与产业高层论坛)(CFMTIF2012)
昆明
英文
607-610
2012-11-09（万方平台首次上网日期，不代表论文的发表时间）