1Chattopadhyay D. K, Webster D. C. Thermal stability and flame retardancy of polyurethanes [J]. Progress in Polymer Science, 2009, 34 (10) : 1068-113"3.
3Consolati G, Kansy J, Pegoraro M, et al. Positron annihilation study of free volume in cross-linked amorphous polyurethanes through the glass transition temperature [J]. Polymer, 1998, 39 (15) : 3491-3498.
4Wang T. L, Huang F. J, Lee S. W. Preparation and characterization of star polymers with polyurethane cores using polycaprolactone triol [J]. Polymer International, 2002, 51 (12) : 1348-1352.
5Yang C.H, Li Y. J, Wen T. C. Mixture design approach to PEG PPG PTMG ternary polyol-based waterborne polyurethanes [J]. Industrial & Engineering Chemistry Research, 1997, 36 (5) :1614-1621.