PREPARATION OF BIOMEDICAL POLYURETHANE CONTRACEPTIVE SUPPOSITORY OF QUICK SOLIDIFICATION AT ROOM TEMPERATURE AND ITS PROPERTY STUDY
Fang Zhiwei 1,2 , Li Xiaodong 2 (1.Department of Applied Chemistry and Environment Science, Changsha University, Changsha 410003, China; 2.CFC Key Laboratory, College of Aerospace and Material Engineering, National University of Defense Technology, Changsha 410073, China)
With tri ethanolamine and ethylenediamine as chain extender, the biomedical polyurethane contraceptive suppository of quick solidification at room temperature was prepared by prepolymerization method. The reaction property and prefluidity of the blends were studied, and the mechanical property and environmental adaptability of the solidified products were tested. The results showed that the polyurethane prepared by using this chain extender could be solidifed in 25 minutes at room temperature. After the reaction started, the mixture of polyurethane and chain extender could be injected into body in 15 minutes, and it could solidify at body temperature. The flexibility and environmental adaptability of generated polyurethane contraceptive suppository were both good.
【CateGory Index】： TQ320.7