| Preparation and Spring Ratio of Microcellular Polyurethane Elastomer |
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| DOI： |
| Key Words: polyurethane elastomer；microcellular；spring ratio |
| Author Name | Affiliation | | TANG Gong-qing | Beijing University of Chemical Technology | | LUO Yu-yuan | Beijing University of Chemical Technology | | ZHANG Mei | Beijing University of Chemical Technology | | PAN Shang | Beijing University of Chemical Technology | | JIANG Zhi-guo | Beijing University of Chemical Technology |
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| Abstract: |
| A microcellular polyurethane elastomer（MPUE） was prepared by using premixed polyether polyol，diphenylmethane-4，4-diisocyanate，polyaryl polymethylene isocyanate（PAPI）and 1，4-butanediol，and its spring ratio was investigated.The results showed that，by using PAPI in hard segment，the spring ratio of MPUE was decreased significantly.When the isocyanate index and mass fraction of hard segment were proper，MPUE with low spring ratio was prepared. |
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