| PCL/PMVS共混物的辐射交联行为与性能 |
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| 引用本文： | 朱光明,王业玺,吕玲,梁国正.PCL/PMVS共混物的辐射交联行为与性能[J].材料研究学报,2006,20(3):272-276. |
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| 作者姓名： | 朱光明 王业玺 吕玲 梁国正 |
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| 作者单位： | 1. 西北工业大学应用化学系,西安,710072
2. 河南油田资产经营部,南阳,473132 |
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| 摘 要： | 测量了PCL／PMVS共混物的凝胶含量、力学性能和形状记忆行为，研究了聚己内酯（PCL）与甲基乙烯基硅橡胶（PMVS）共混物的辐射交联行为．研究表明，PCL／PMVS共混物的辐射交联符合Charlesby—Pinner关系式，且PMVS对PCL的辐射交联有促进作用．随着共混物中硅橡胶用量的增加，凝胶化剂量降低，裂解与交联几率的比值po／qo比值变小，辐射交联效率提高．共混物的拉伸强度和断裂伸长率随着辐射剂量的增加而下降，但下降的幅度比纯PCL—H5要小．在低温辐射交联PCL／PMVS共混物的弹性模量随着硅橡胶含量的增加而下降，在高温随着硅橡胶含量的增加而升高．适度交联的PCL／PMVS共混物具有较高的形状记忆特性，形变恢复率大于95％．
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| 关 键 词： | 高分子材料 聚己内酯(PCL) 甲基乙烯基硅橡胶(PMVS) 共混物 辐射交联 形状记忆 |
| 文章编号： | 1005-3093(2006)03-0272-05 |
| 收稿时间： | 06 13 2005 12:00AM |
| 修稿时间： | 04 13 2006 12:00AM |
Properties of radiation crosslinked PCL/PMVS blends |
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| ZHU Guangming,WANG Yexi,LU Ling,LIANG Guozheng.Properties of radiation crosslinked PCL/PMVS blends[J].Chinese Journal of Materials Research,2006,20(3):272-276. |
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| Authors: | ZHU Guangming WANG Yexi LU Ling LIANG Guozheng |
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| Abstract: | The performance of radiation crosslinked blends of polycaprolactone(PCL) and poly-methylvinylsiloxane (PMVS) was investigated. The results showed that PMVS played a promoting role in radiation crosslinking reaction. As the usage of PMVS increased, the gelation dose and the ratio of degradation to cross-linking (p0/q0) decreased, these demonstrated that the efficiency of radiation crosslinking of PCL was boosted. The elastic modulus of radiation crosslinked PCL/PMVS blends decreased with the increase of PMVS under the melting point temperature of PCL, and increased with the increase of PMVS above the melting point temperature of PCL. The properly crosslinked PCL/PMVS blends has good shape memory effects and the ratios of deformation recovery (>95%). |
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| Keywords: | polymer materials polycaprolactone(PCL) polymethylvinylsiloxane(PMVS) blends radiation cross-linking shape-memory effects |
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