Journal
POLYMER BULLETIN
Volume 73, Issue 11, Pages 2947-2960Publisher
SPRINGER
DOI: 10.1007/s00289-016-1633-3
Keywords
Polymer-matrix composites; Mechanical properties; Glass fibers; Fracture toughness
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Funding
- National Science and Technology Major Project of the Ministry of Science and Technology of China [2012ZX04010032]
- National Natural Science Foundation of China [51402251, 51578289, 51572234, 51502259]
- Natural science fund of Jiangsu Province [BK20130428]
- Flagship Major Development of Jiangsu Higher Education Institutions [PPZY2015A025]
- joint research fund between Collaborative Innovation Center for Ecological Building Materials and Environmental Protection Equipments and Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province [CP201506, GX2015107]
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Glass fibers grafted by hyperbranched polymer with amino terminal group, GFs-HBPA, were incorporated into an epoxy matrix to prepare a high-performance composite. Mechanical characterization of epoxy-based composites was performed to investigate the effect of GFs-HBPA in the epoxy matrices. The composites revealed significant improvements in flexural strength, elongation at break, and tensile strength, as well as impact resistance in comparison to the neat epoxy. For instance, the flexural strength, elongation at break, tensile strength, and impact strength for composite with 2 wt% GFs-HBPA were increased by about 17.7, 158, 7.9, and 35.9 %, respectively, in relation with the neat epoxy. The reinforcing effect of GFs-HBPA was analyzed on the fracture surface of composites through field emission scanning electron microscopy.
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