| Preparation and property of PTMG-TDI based castable polyurethane elastomer with low free TDI monomer |
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| DOI： |
| Key Words: PTMG；TDI；castable polyurethane elastomer；low free type；processibility；physical property；dynamic property |
| Author Name | Affiliation | | YI Yu-hua | South China University of Technology | | CHEN Wan-bin | South China University of Technology |
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| Abstract: |
| Using PTMG and TDI as raw materials，a polyurethane(PU) prepolymer was synthesized by molecular distillation method，then a castable PU elastomer with low free TDI monomer was prepared with 3，3'-dichloro-4，4'diamino diphenylmethane chain extender，and its properties were investigated.The results showed that，the PU prepolymer and chain extender mixture possessed good flow behaviour and faster curing rate compared with general PU prepolymer；the tensile strength and tear strength were similar to those of general PU elastomer，but resilience was higher，compression set was lower and dynamic property was better. |
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