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The effectiveness of toughening technologies on Multifunctional Epoxy Resin systems
Multifunctional Epoxy Resins have long been used where higher temperature performance and/or high modulus is required. These systems however are limited in their use because of their inherent brittleness. Improvement in toughness can be accomplished through a number of techniques, which are effective in difunctional and more linear systems such as those bas -d on Bisphenol A. However some of these approaches are less effective with multifunctional epoxy resins because they reduce the cross-link density for these resins and correspondingly high temperature performance. In this study we examined different approaches to toughening and measured their effectiveness in improving fracture toughness and evaluated their impact on thermal and mechanical properties.
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