Organic-montmorillonite modified shape memory epoxy composite
Organic-montmorillonite modified shape memory epoxy composite
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DOI：
10.1002/pat.1712
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发表时间：
2011-12-01
影响因子：
3.4
通讯作者：
Du, Xingwen
中科院分区：
文献类型：
--
作者：
Liu, Yuyan;Han, Chunmiao;Du, Xingwen
制备了一系列有机蒙脱土（OMMT）改性形状记忆环氧树脂（SMEP）复合材料，用于空间可展开结构。采用拉伸测试、动态力学分析（DMA）、x射线衍射（XRD）、扫描电镜（SEM）和折叠展开形状记忆测试等方法表征了这些材料的力学、结构和形状记忆性能。结果表明：添加OMMT可以提高复合材料的韧性、抗拉强度、转变温度和形状恢复速度，但形状恢复率不受影响；3wt%的复合材料。OMMT的组合性能最佳。在185℃下，最大弯曲角度为180度，约2分钟即可完全恢复原状。与纯SMEP相比，其断裂伸长率和抗拉强度分别提高835%和17.4%。转变温度也略有升高。版权所有John Wiley & Sons， Ltd。
A series of organic-montmorillonite (OMMT) modified shape memory epoxy (SMEP) composites were prepared for the purpose of application on space deployable structures. Tensile test, dynamic mechanical analysis (DMA), X-ray diffraction (XRD), scanning electron microscope (SEM), and fold-deploy shape memory test methods were used to characterize the mechanical, structure, and shape memory properties of these materials. The results showed addition of OMMT could improve the composites' toughness, tensile strength, transition temperature, and shape recovery speed, while shape recovery ratio was unaffected. Composite with 3wt%. OMMT had the optimum combination property. It could fully recover its original shape in about 2 min at 185 degrees C under the maximum bending angle of 180 degrees. Its elongation at break and tensile strength were increased by 835 and 17.4%, respectively, compared to that of neat SMEP. The transition temperature also slightly increased. Copyright (C) 2010 John Wiley & Sons, Ltd.