Title of article :
Manufacture and Characterization of Heat-Resistant andHeat-Insulating New Composites Based on Resol Resin–CarbonFibers–Perlite for the Built Heritage Protection
Author/Authors :
Zoumpoulakis, Loukas Department of Chemical Engineering - National Technical University of Athens - Athens 9 Heroon Polytechniou Str. - Zografou Campus , Greece , Soupionis, George Department of Chemical Engineering - National Technical University of Athens - Athens 9 Heroon Polytechniou Str. - Zografou Campus , Greece
Abstract :
Compositematerialswerecreatedforusageasreinforcementandtoprotectthebuildingenvelopebasedontoday’sglobalconditionssuchasclimatechange. Compositematerialsweremanufacturedusingphenol-formaldehyderesin(caseofresol) asamatrix,carbonfiberasreinforcement(7.5%v/v), andperlite(10%w/w) asalowthermalconductivitycomponent,tocombinehighmechanicalpropertieswithgoodheatresistanceandgoodthermalinsulationproperties. Thestructureofthesenewmaterialswasexaminedthroughscanningelectronmicroscopy(SEM)andelementalanalysis(SEM-EDS). Theadditionofperlite(10%w/w)intheresitematrix(withoutfibers) increasedtheflexuralandshearstrengthofthecompositematerials .Ontheotherhand,thecompositematerialswithfiberreinforcementshowthattheperlitereducestheflexuralandshearstrengthduetotheadditionalinterfaceswhichwerecreated. Duringheattreatmentat473K,carbonfibershadthesmallestweightlossfollowedbyperlitewhiletheresitematrix (i.e.,thecuredresol)showsthegreatestweightloss.Itisnotedthattheroleofperliteistostabilizethemassoftheresitematrixduringheattreatment.Thecompositematerialwithcarbonfibersandperliteisaheat-resistantmaterialwithonly2%weightlossat473Kfor1hourandshowsalowcoefficientofthermalconductivity,makingitanewmaterialinthedirectionofheat-insulatingmaterials.
Keywords :
Manufacture , Characterization , Heat-Resistant , Heat-Insulating , Composites Based , Resol Resin–CarbonFibers–Perlite , Built Heritage Protection , SEM
