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Ribeiro, Mcs
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Topics
Publications (13/13 displayed)
- 2015SUSTAINABILITY IMPROVEMENT OF A COMPOSITE MATERIALS' INDUSTRY THROUGH RECYCLING AND RE-ENGINEERING PROCESS APPROACHES
- 2015Polymer composite materials modified with nano-oxides and phosphinates hybrid flame retardant systemscitations
- 2014Polymeric nanocomposites production risk assessment using different qualitative analyses
- 2013Luffa fibers and gamma radiation as improvement tools of polymer concretecitations
- 2013Mix design process of polyester polymer mortars modified with recycled GFRP waste materialscitations
- 2013Risk assessment in processing polymer nanocomposites
- 2011Mathematical modeling and simulation of heat flow through pultrusion die assembly system for thermoset composites
- 2010Behaviour of Cement and Polymer Mortar Materials to Rapid Freeze-Thaw Cyclingcitations
- 2009Effect of natural and artificial weathering on the long-term flexural performance of polymer mortarscitations
- 2004Flexural performance of polyester and epoxy polymer mortars under severe thermal conditionscitations
- 2003Assessment of thermal degradation on polymer mortars
- 2002Creep behaviour of FRP-reinforced polymer concretecitations
- 2001Experimental investigation into the static and fatigue behavior of polymer concrete reinforced with GFRP rods
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document
Polymer composite materials modified with nano-oxides and phosphinates hybrid flame retardant systems
Abstract
Unsaturated polyester based composites materials present several improved properties over conventional materials. However, these composites show great sensitivity to high temperatures and poor fire behaviour. In the present study, an effort is undertaken to develop new unsaturated polyester composites with improved fire reaction behaviour by matrix modification with hybrid flame retardant systems based on nano-oxides and phosphinates. For this purpose, a series of composite formulations containing different contents and types of both metal oxide nano/micro particles and organic phosphinates were manufactured, with basis on the Taguchi L9 orthogonal array, and tested for fire reaction and mechanical properties. The data treatment was carried out through analyses of variance. Fire reaction properties were analysed and quantified by the vertical flammability test (UL-94), and the mechanical properties were studied by flexural, Shore D, and Charpy impact tests. The results were compared with those obtained for plain resin specimens. Test results revealed that the addition of hybrid flame retardant systems introduced reasonable improvements in at least one fire reaction property. However, it was verified that the filler addition led to a decrease in mechanical properties, probably due to poor matrix-filler adhesion. Further studies are required in order to improve the mix design formulations. © (2015) Trans Tech Publications, Switzerland.