Fracture mechanisms in rigid core-shell particle modified high performance epoxies
| Autor: | E. I. Garcia Meitin, D. M. Pickelman, C. J. Bott, Hung-Jue Sue |
|---|---|
| Rok vydání: | 1996 |
| Předmět: |
chemistry.chemical_classification
Rigid core Materials science Polymers and Plastics Polymer Epoxy Toughening Colloid and Surface Chemistry Natural rubber chemistry Deflection (engineering) visual_art Materials Chemistry visual_art.visual_art_medium Physical and Theoretical Chemistry Composite material |
| Zdroj: | Colloid & Polymer Science. 274:342-349 |
| ISSN: | 1435-1536 0303-402X |
| Popis: | The fracture mechanisms of a high performance epoxy system modified with two types of preformed rigid core-shell particles (RCSP) were investigated. The use of the preformed RCSP anables the control of the dispersion of the toughener phase in the epoxy, which, in turn, allows the mechanical properties of the modified epoxy to be optimized. The toughening effect via the RCSP modification is found to be as good as that via the core-shell rubber modification. The moduli andT g of these RCSP-modified epoxies are virtually unaltered via the RCSP modification, when compared with the neat epoxy resin equivalent. The toughening mechanisms in these toughened systems appear to be predominantly crack deflection, crack bifurcation, and microcracking. Approaches for effective toughening of high performance polymers via rigid polymers are discussed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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