Journal
JOURNAL OF MATERIALS RESEARCH
Volume 31, Issue 10, Pages 1393-1402Publisher
CAMBRIDGE UNIV PRESS
DOI: 10.1557/jmr.2016.174
Keywords
composite; core-shell; toughness
Categories
Funding
- National Natural Science Foundation of China [51402251, 51578289, 51572234, 51502259]
- National Science and Technology Major Project of the Ministry of Science and Technology of China [2012ZX04010032]
- Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province [CP201506, GX2015107]
- Flagship Major Development of Jiangsu Higher Education Institutions [PPZY2015A025]
- Natural science fund of Jiangsu Province [BK20130428]
- Collaborative Innovation Center for Ecological Building Materials and Environmental Protection Equipments
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A novel core-shell particle that consists of epoxide-terminated hyperbranched polymer (HBP) and silica nanoparticles was incorporated into an epoxy/hydroxyl-terminated HBP blend to fabricate a high-performance epoxy thermoset. The effect of the core-shell particle content on the mechanical properties of the epoxy thermosets was investigated in detail. Results from tensile, flexural, and impact tests are provided. The impact fracture surface was studied by field emission-scanning electron microscopy. The incorporation of 2 wt% core-shell particles improved the tensile strength, percent elongation at break, flexural strength, and impact resistance of epoxy/hydroxyl-terminated HBP thermosets. Field emission-scanning electron micrographs showed that core-shell particle addition resulted in large-scale shear deformation and debonding from the epoxy matrix, and improved the epoxy resin toughness.
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