Synthesis and properties of novel polyurethanes with excellent transparency
Poly (urethane-methacrylate) (PUA) plastic sheets were prepared from isophorone diisocyanate (IPDI), different kinds of polyols, and β -hydroxyethyl methacrylate(HEMA) in the presence of dibutytin dilaurate(DBTL) as catalyst and 2,2-azo-bis-iso-butyro-nitrile(AIBN) as initiator. The properties of the material were measured by dynamic mechanical analysis (DMA), water uptake and optical properties testing, and mechanical performance measurements. The effect of kinds of polyols on the final properties was evaluated. The results show that the tensile strength and glass transition temperature (Tg) of PUA decrease with increasing the molecular weight of polyols. However, the longer polyol chain in the PUAs leads to the higher impact strength. The obtained PUAs present the good thermal and mechanical properties, low water uptake (below 2.5 %) and high transparence (above 90 %). The diversity of properties suggests that these PUAs can be used in a wide range of excellent optical polymer applications.
GAO Lijun ZHOU Liming FANG Shaoming ZHENG Hua GUO Liangqi SUN Guanghui HU Min LIU Chunsen MA Songtao
Zhengzhou University of Light Industry Henan Provincial Key Laboratory of Surface & Interface Science, Henan Zhengzhou 450002, P.R.China
国际会议
2009 International Conference on Advanced Fibers and Polymer Materials(2009年先进纤维与聚合物材料国际学术会议)
上海
英文
172-174
2009-10-21（万方平台首次上网日期，不代表论文的发表时间）