4United Nations Environment Programme. Montreal protocol on substances that deplete the ozone layer: task force on emissions discrepancies report[ R]. Dakar: UNEP,2005.
5ZURER P S. Delayed CFC phase out in developing countries raises growing concern[ J]. Chemical Engineering News, 1995,25 ( 8 ) : 13- 14.
6KJELDSEN P, SCHEUTZ C. Short- and long-term releases of fluorocarbons from disposal of polyurethane foam waste [ J ]. Environ Sci Technol, 2003,37 : 5071-5079.
7KJELDSEN P, JENSEN M H. Release of CFC-11 from disposal of polyurethane foam waste [ J ]. Environ Sci Technol, 2000,35 : 3055- 3063.
8HONG S, DUDA J L J. Diffusion of CFC- 11 and hydrofluorocarbons in polyurethane [ J ]. Journal of Applied Polymer Science, 1998,70 : 2069- 2073.
9STRATFORD J. Estimating CFC releases from cutting of fridges[ R]. Scottish : Scottish Environment Protection Agency, 2002 : 1-27.
10BRANDRETH D A, INGERSOLL H G. Accelerated aging of rigid polyurethane foam [ M ]. [ s. l. ] : Cellular Plastics, 1980 : 235-238.