| HTPB/PTMEG/DADMT聚氨酯弹性体的动态性能 |
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| 引用本文： | 辛浩波,齐安.HTPB/PTMEG/DADMT聚氨酯弹性体的动态性能[J].高分子材料科学与工程,2012(9):57-60. |
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| 作者姓名： | 辛浩波 齐安 |
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| 作者单位： | 橡塑材料与工程教育部重点实验室,青岛科技大学功能高分子研究所 |
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| 摘 要： | 以端羟基聚丁二烯(HTPB)、聚四氢呋喃醚二醇(PTMEG)和2,4-甲苯二异氰酸酯(TDI-100)为原料,二甲硫基甲苯二胺(DADMT)为扩链剂,制得聚氨酯弹性体(PUE)。采用力学性能测试、差示扫描量热(DSC)、动态力学分析(DMA)及热重分析(TG)研究了HTPB/PTMEG比值、HTPB相对分子质量对PUE性能的影响。结果表明,HTPB(羟值0.836mmol/g)/PTMEG质量比为1∶4时,PUE力学性能最佳,拉伸强度30.3MPa,撕裂强度99.8kN/m;PU0(0.8)的tanδ峰位于-56.2℃,0℃以后,tanδ值低于0.08,说明丁羟型PUE比PTMEG型具有更好的动态性能,且HTPB分子量高,动态性能好;丁羟型PUE具有更高的热稳定性。
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| 关 键 词： | 聚氨酯弹性体 动态性能 耐热性 端羟基聚丁二烯 聚四氢呋喃醚二醇 二甲硫基甲苯二胺 |
Dynamic Properties of HTPB/PTMEG/DADMT Polyurethane Elastomers |
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| Haobo Xin,An Qi.Dynamic Properties of HTPB/PTMEG/DADMT Polyurethane Elastomers[J].Polymer Materials Science & Engineering,2012(9):57-60. |
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| Authors: | Haobo Xin An Qi |
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| Affiliation: | (Key Laboratory of Rubber-Plastics(QUST),Ministry of Education,Institute of FunctionalPolymers,Qingdao University of Science and Technology,Qingdao 266042,China) |
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| Abstract: | Polyurethan elastomer(PUE) was synthesized by hydroxy-terminated polybutadiene(HTPB) and polytetramethylene ether glycols(PTMEG),2,4-toluene diisocyanate(TDI-100) and 2,4/2,6-diamino-3,5-dimethylthiotoluene(DADMT) as extender.The mechanical properties and structure of PUE were characterized,by DSC,DMA and TG,and the effects of ratio of HTPB/PTMEG and average molecular weight of HTPB on the PUE were investigated.The results show that the mechanical properties of PUE are up to a good level(tensile strength is 30.3MPa,tear strength is 99.8kN/m)when the mass ratio of HTPB and PTMEG is 1∶4.On the tanδ-T curve of PU0(0.8),the tanδ peak is located at-56.2 ℃,and tanδ values is lower than 0.08 above 0 ℃.This show that the dynamic performance of HTPB-based PUE is better than of PTMEG-based.And HTPB-based PUE has a higher thermal stability |
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| Keywords: | polyurethane elastomer dynamic performance heat resistance HTPB PTMEG DADMT |
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