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Organic‐montmorillonite modified shape memory epoxy composite
Author(s) -
Liu Yuyan,
Han Chunmiao,
Tan Huifeng,
Du Xingwen
Publication year - 2011
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.1712
Subject(s) - materials science , composite material , scanning electron microscope , ultimate tensile strength , composite number , shape memory alloy , epoxy , toughness , montmorillonite , elongation , dynamic mechanical analysis , tensile testing , polymer
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°C under the maximum bending angle of 180°. 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 © 2010 John Wiley & Sons, Ltd.