Journal
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
Volume 53, Issue -, Pages 88-96Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesa.2013.05.017
Keywords
Polymer-matrix composites (PMCs); Mechanical properties; Flame retardancy
Funding
- National Natural Science Foundation of China (NSFC)
- Civil Aviation Administration of China (CAAC) [61079015]
- Fundamental Research Funds for the Central Universities [WK2320000007]
- University of Bolton
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The effect of adding graphene in epoxy containing either an additive (MP) or reactive-type (DOPO) flame retardant on the thermal, mechanical and flammability properties of glass fiber-reinforced epoxy composites was investigated using thermal analysis; flexural, impact, tensile tests; cone calorimetry and UL-94 techniques. The addition of MP or DOPO to epoxy had a thermal destabilization effect below 400 degrees C, but led to higher char yield at higher temperatures. The inclusion of 10 wt% flame retardants slightly decreased the mechanical behavior, which was attributed to the poor interfacial interactions in case of MP or the decreased cross-linking density in case of DOPO flame retarded resin. The additional graphene presence increased flexural and impact properties, but slightly decreased tensile performance. Adding graphene further decreased the PHRR, THR and burning rate due to its good barrier effect. The improved fire retardancy was mainly attributed to the reduced release of the combustible gas products. (C) 2013 Elsevier Ltd. All rights reserved.
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