| 碳纳米管改性弹性体对聚甲醛的增韧作用及取向行为 |
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| 引用本文： | 闫宁,王锋,夏和生. 碳纳米管改性弹性体对聚甲醛的增韧作用及取向行为[J]. 高分子材料科学与工程, 2010, 0(1): 47-50 |
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| 作者姓名： | 闫宁 王锋 夏和生 |
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| 作者单位： | 高分子材料工程国家重点实验室（四川大学）四川大学高分子研究所; |
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| 基金项目： | 国家重点基础研究发展计划(973)资助(2007CB714701);;国家自然科学基金面上项目(50673060);;四川省杰出青年学科带头人培养计划(06ZQ026-032) |
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| 摘 要： | 制备了聚甲醛(POM)/碳纳米管(CNTs)/弹性体(TPU)三元共混复合材料。考察了碳纳米管改性弹性体对聚甲醛的增韧效果及取向行为。结果表明,碳纳米管可有效地增强增韧弹性体,在1%(质量分数,下同)的碳纳米管存在下,TPU拉伸强度由54.6 MPa提高到66.0 MPa,提高21%左右,断裂伸长率由684%提高到801%,提高约17%。与未改性弹性体相比,CNTs改性弹性体对聚甲醛的增韧效果更显著。加入20%的固相力化学法改性TPU弹性体,碳纳米管含量仅为0.1%,断裂伸长率达到180%,同未改性体系相比,提高到近3倍。
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| 关 键 词： | 碳纳米管 聚甲醛 聚氨酯弹性体 |
Carbon Nanotube Modified Polyurethane Elastomer Toughning Polyoxymethylene and the Stretching Orientation Behavior of Carbon Nanotube in Matrix |
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| YAN Ning,WANG Feng,XIA He-sheng. Carbon Nanotube Modified Polyurethane Elastomer Toughning Polyoxymethylene and the Stretching Orientation Behavior of Carbon Nanotube in Matrix[J]. Polymer Materials Science & Engineering, 2010, 0(1): 47-50 |
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| Authors: | YAN Ning WANG Feng XIA He-sheng |
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| Affiliation: | State Key Laboratory of Polymer Materials Engineering;Polymer Research Institute of Sichuan University;Chengdu 610065;China |
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| Abstract: | POM/CNTs/TPU composites were prepared by a mechanochemical process.The results show that CNTs can improve the mechanical properties of TPU.At 1%CNTs content,the tensile strength of TPU increases from～54.6 MPa to～66.0 MPa by～21%and the elongation at break increases from～684%to～801%by～17%.Compared with unmodified TPU elastomer,CNTs-modified elastomer has a much better effect on the elongation at break for POM.At a content of 20%CNTs-modified TPU elastomer,when CNTs content is 0.1%, the elongation at break of CNTs/TPU/POM composite reaches～180%,3 times than that of TPU/POM.The stretching orientation behavior of CNTs in the matrix was confirmed by SEM. |
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| Keywords: | carbon nanotubes polyoxymethylene polyurethane elastomer |
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