| 辐照交联SBS／LDPE共混物的形状记忆效应研究 |
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| 引用本文： | 王永坤,朱光明,张磊,刘婷婷,谢建强. 辐照交联SBS／LDPE共混物的形状记忆效应研究[J]. 辐射研究与辐射工艺学报, 2013, 0(6): 36-39 |
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| 作者姓名： | 王永坤 朱光明 张磊 刘婷婷 谢建强 |
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| 作者单位： | [1]西北工业大学应用化学系,西安710129 [2]西北核技术研究所,西安710024 |
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| 摘 要： | 以苯乙烯-丁二烯嵌段共聚物（SBS）热塑性弹性体和低密度聚乙烯（LDPE）为主要原料，使用混炼机将SBS与LDPE按80：20的比例共混并在硫化机上模压制成SBS／LDPE共混物，利用γ射线辐照上述共混物使之交联。通过DSC分析、力学性能和形状记忆性能测试，研究了辐照交联SBS／LDPE共混物材料的结构对形状记忆性能的影响。结果表明，SBS／LDPE共混物随吸收剂量的增加，交联度增大，拉伸强度与断裂伸长率均逐渐降低；此外，适度交联的SBS／LDPE共混物呈现良好的形状记忆效应，形变回复率高于95％。
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| 关 键 词： | SBS LDPE共混物 辐照交联 力学性能 形状记忆行为 |
Shape memory effect of radiation cross-linked SBS/LDPE blends |
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| WANG Yongkun,ZHU Guangming,ZHANG Lei,LIU Tingting,XIE Jianqiang. Shape memory effect of radiation cross-linked SBS/LDPE blends[J]. Journal of Radiation Research and Radiation Processing, 2013, 0(6): 36-39 |
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| Authors: | WANG Yongkun ZHU Guangming ZHANG Lei LIU Tingting XIE Jianqiang |
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| Affiliation: | 1 (Department of Applied Chemistry, School of Science, Northwestern Polytechnical University, Xi＇an 710129, China) 2 (Northwest Institute of Nuclear Technology, Xi ＇an 710024, China) |
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| Abstract: | A novel shape memory polymer material was fabricated by ）,-ray irradiating the blending thermo- plastic styrene-butadiene-styrene block copolymer （SBS） with low density polyethylene （LDPE）, and SBS/LDPE=80/20. The relationship between the structure and shape memory properties of SBS/LDPE blends was investigated by the analysis of gelation level, DSC, mechanical properties and shape memory performances. The re- suits show that with increasing absorbed dose, the gelation level of SBS/LDPE blends increases, meaning that the de- gree of cross-linking of SBS/LDPE blends increases; while the tensile strength of blends and the elongation at break decrease gradually. In addition, the radiation cross-linked SBS/LDPE blends exhibited good shape memory effect, and the shape recovery ratio is more than 95%. |
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| Keywords: | SBS/LDPE blends Radiation cross-linking Mechanical properties Shape memory effect |
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