The results were shown below: 1.The PUA with low viscosity was synthesized with TDI, PEG400 and HEMA (molecular ratio was 5:1:8) by two steps.

• 研究结果表明： 1、合成低黏度的聚氨酯丙烯酸酯 (PUA) 的条件为：反应物TDI、PEG400与HEMA的物质的量比应为5:1:8；