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1、PolymerDegradationandStability96(2011)23e32ContentslistsavailableatScienceDirectPolymerDegradationandStabilityjournalhomepage:www.elsevier.com/locate/polydegstabUseofinorganicmaterialstoenhancethermalstabilityandflammabilitybehaviorofapolyimidea,*a,bAlexanderB.Mo
2、rgan,SirinaPutthanarataMultiscaleCompositesandPolymersDivision,UniversityofDaytonResearchInstitute,Dayton,OH45469,USAbAirForceResearchLaboratory,AFRL/RXBC,Wright-PattersonAFB,OH45433-7750,USAarticleinfoabstractArticlehistory:Whileagreatvarietyofhightemperaturepo
3、lyimidematerialsexist,thesematerialsarebeingsubjectedReceived18August2010tohigherandhigherusetemperaturesinoxidativeandenvironmentallyaggressiveenvironments.ThereReceivedinrevisedformisalimittotheextentonecantakeapolyimidebeforeitwilloxidizeandsubsequentlysuffer
4、property28October2010degradation,thermaldecomposition,andstructuralfailure.Therefore,weinsteadsoughttousematerialsAccepted9November2010whichdonotoxidize(inorganicmaterials)toenhancethepolyimidecompositionandperhapsmovetheAvailableonline4December2010propertiesoft
5、heorganicpolymermoreintotherealmofceramicswhilemaintainingpolyimidecompositeweightsandprocessingadvantages.InthispaperwepresentresultsofthecombinationofKeywords:inorganicmicronsizedparticleswithandwithoutcarbonnanofiberstoproduceavarietyofhighlyPolyimidesThermald
6、ecompositioninorganicparticlefilledpolyimides.ThesepolyimidesweretestedforthermalstabilityandflammabilityFlammabilityinresinpelletformandasaprotectivecoatingforacarbonefibercompositestructure.OurresultsInorganicnanoparticlesdemonstratethattheresinwithinorganicparti
7、clesexhibitedsignificantreductionsinflammabilitybythemselves,butminimalflammabilityreductionwhenusedasathincoatingtoprotectacarbonefibercomposite.Further,thegainsinthermalstabilityarelimitedbythethermalstabilityofthepolyimidematrix,suggestingthatmoreworkisneededinme
8、asuringthelimitsofinorganicfillerstoimprovethermalstability.Still,theresultsarepromisingandmayyieldpolyimidesystemsusefulforprovidingresistancetodamagefromhighheatfluxe
