Experimental studies of the deformation mechanisms of core-shell rubber-modified diglycidyl ether of bisphenol-A epoxy at cryogenic temperatures
| Autor: | Judy Schneider, H. R. Brown, Taylor L Murphy |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
chemistry.chemical_classification
Toughness Diglycidyl ether Materials science Mechanical Engineering Izod impact strength test Epoxy Polymer Liquid nitrogen chemistry.chemical_compound Natural rubber chemistry Mechanics of Materials visual_art Ultimate tensile strength Materials Chemistry Ceramics and Composites visual_art.visual_art_medium Composite material |
| Zdroj: | Journal of Composite Materials. 48:1279-1296 |
| ISSN: | 1530-793X 0021-9983 |
| Popis: | Epoxy polymers, although often used in fiber-reinforced polymeric composites, have an inherent low toughness that further decreases with decreasing temperatures. Second-phase additives have been effective in increasing the toughness of epoxies at room temperature; however, the mechanisms at low temperatures are still not understood. In this study, the deformation mechanisms of a diglycidyl ether of bisphenol-A epoxy modified with MX960 core-shell rubber particles were investigated under quasi-static tensile and impact loads at room temperature and liquid nitrogen temperature. Overall, the core-shell rubber had little effect on the tensile properties at room temperature and liquid nitrogen temperature. The impact strength decreased from neat to 1 wt% and 3 wt% but increased from neat to 5 wt% at room temperature and liquid nitrogen temperature, with a higher impact strength at room temperature at all core-shell rubber loadings. While a large toughening effect was not seen in this study, the mechanisms analyzed herein will likely be of use for further material investigations at cryogenic temperatures. |
| Databáze: | OpenAIRE |
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