| 聚醚型聚氨酯弹性体力学性能的研究 |
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| 引用本文： | 谢富春,朱长春,张玉清. 聚醚型聚氨酯弹性体力学性能的研究[J]. 塑料工业, 2005, 33(9): 44-46 |
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| 作者姓名： | 谢富春 朱长春 张玉清 |
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| 作者单位： | 河南科技大学化工与制药学院,河南,洛阳,471003;洛阳吉明化工有限公司,河南,洛阳,471012 |
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| 摘 要： | 研究了以不同相对分子质量的聚醚多元醇、二异氰酸酯和扩链剂为原料制备PU弹性体的力学性能。结果表明：PU弹性体的力学性能随-NCO基含量的增加而提高；提高聚醚的相对分子质量，PU的定伸强度、拉伸强度和撕裂强度下降，断裂伸长率提高；后熟化时间及R值对PU弹性体性能有显著的影响；聚醚相对分子质量相同时，MDI—PU的力学性能优于TDI—PU。
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| 关 键 词： | 聚醚 聚氨酯 弹性体 力学性能 |
| 文章编号： | 1005-5770(2005)09-0044-03 |
| 收稿时间： | 2005-05-30 |
| 修稿时间： | 2005-05-30 |
Study on Mechanical Properties of Polyether-polyol Type PU Elastomer |
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| XIE Fu-chun,ZHU Chang-chun,ZHANG Yu-qing. Study on Mechanical Properties of Polyether-polyol Type PU Elastomer[J]. China Plastics Industry, 2005, 33(9): 44-46 |
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| Authors: | XIE Fu-chun ZHU Chang-chun ZHANG Yu-qing |
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| Abstract: | Polyurethane(PU ) ela stomers were prepared with polyether-polyg ol, diis ocyanate and chain extender as raw material s, and the mechanical properties of t he prepared PU elastomers were studied.The results showed that the mechanical properties of PU incre ased with the increase of the content of free-NCO. When the molecu lar weight of polyether-polygol inc reased, the tensile strength and tear stren gth of PU decreased, but the elongatio n at break increased. The postcuring time a nd the mole ratio of NCO/OH had obvio us effect on the mechanical properties of P U. The mechanical properties of MDI-PU were better than those of TDI-PU with silimar molecular weight. |
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| Keywords: | Polyether Polyurethane Elastomer Mechanical Properties |
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