6LI Xiao-bin,CAO Hong-bin,ZHANG Yi.Properties of water blown rigid polyurethane foams with different functionality[J].Journal of Wuhan University of Technology-Mater.Sci.Ed., 2008,23 (1) : 125-129.
7MARZOCCHI A,ROBERT N G,BOLEN C E.Road pavement and repair: USP, US 4265563[P]. 1981-05-05.
8SINGH R,FECHTER R.One-step process for rapid structure repair: USA, US 0026142 A1 [P].2007-02-01.
9MONDAL P,KHAKHAR D V.Regulation of cell structure in water blown rigid polyurethane foam[J].M acromol.Symp., 2004(216) : 241-254.