Journal
JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES
Volume 25, Issue 10, Pages 1256-1263Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/1045389X13504474
Keywords
Shape memory polymer; epoxy-based shape memory polymer; gamma-radiation
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Funding
- National Natural Science Foundation of China [11225211, 11272106]
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In this article, the epoxy-based shape memory polymers were exposed to simulated gamma-radiation environments up to 140 days for an accelerated irradiation. The influence of gamma-radiation on thermal and mechanical properties was evaluated by differential scanning calorimetry, dynamic mechanical analysis, and tensile test. The glass transition temperatures (T-g) determined by differential scanning calorimetry and dynamic mechanical analysis decreased no more than 10%, and the shape recovery speed became a little faster after gamma-radiation of 1 X 10(5) Gy. The tensile strength and elastic modulus could, respectively, maintain 26 MPa and 1.36 GPa after being irradiated by 1 X 10(6) Gy radiation, showing great potential in aerospace structural materials.
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