| Synthesis and Properties of HTPB/PTHF Polyurethane Elastomers |
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| DOI： |
| Key Words: hydroxy-terminated polybutadiene；polytetrahydrofuran；polyurethane elastomer；N；N-di（2-hydroxy propyl）aniline |
| Author Name | Affiliation | | Hao Lixin | Qingdao Institute of Chemical Technology | | Tian Yongliang | Qingdao Institute of Chemical Technology | | Wu Yanming | Qingdao Institute of Chemical Technology | | Xin Haobo | Qingdao Institute of Chemical Technology | | Li Dehe | Qingdao Institute of Chemical Technology |
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| Abstract: |
| The formula of hydroxy-terminated polybutadiene（HTPB）/polytetrahy-drofuran（PTHF）polyurethane elastomers was studied.The influence of the free ——NCO content，the chain extend coefficient with N，N-di（2-hydroxy propyl） aniline chain extender，and the ratio of HTPB/PTHF on the physical properties of elastomers was investigated.The test results showed that the good balanced properties of elastomers were obtained when the free ——NCO content was 8.5% and the chain extend coefficient was 0.89；the improved tensile strength and tear strength of elastomers were obtained as the ratio of HTPB/PTHF decreased.It was showed by electron microscope that the remarkable soft blocks and hard blocks existed in the elastomers. |
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