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,2014(2):29-32.HUFei,LIUYucun,YUANJunming.EffectsofporoussilicononsensitivityandperformancesofRDX[J].ExplosiveMaterials,2014(2):29-32.
[2]>?@
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[J].D,ÁEÂÃ
,2014(2):233-237.SHENLianhua,LIGuoping,LUO Yunjun,etal.PreparationofAl/B/Fe2O3nanocompositeenergeticmaterialsbyhighenergyballmilling[J].JournalofSolidRocketTechnology,2014
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PreparationandPropertiesofRDX/Al/SiO2NanocompositeEnergeticMaterials
ZHANGDongdong1,HUANGYinsheng1,LIRui2,LIMeng1,WANGJunjie1,GEMengzhu1,ZHANGHuijian1,HEYali1
(1.SchoolofChemicalEngineering,NanjingUniversityofScienceandTechnology,Nanjing210094,China;2.MinisterialKeyLaboratoryofZNDY,NanjingUniversityofScienceandTechnology,Nanjing210094,China)
Abstract:ToreducethemechanicalsensitivityofRDXandimproveitsthermaldecompositionperformance,threekindsofRDX/Al/SiO2nanocompositeenergeticmaterialsofRDX/Almassfractionas30%,50% and70% respectively(themassratioofRDXtoAlis6∶1)werepreparedbysolgelmethodusingtetramethoxysilaneasprecursorandfluorineboricacidascatalyst.Theirmorphologyandstructurrewerecharacterizedbyscanningelectronmicroscopy(SEM),energydispersivespectrometer(EDS)andXraydiffraction(XRD).Thermalperformancesofthesampleswereinvestigatedbythermogravimetricanalysis(TG)anddifferentialscanningcalorimetry(DSC).ThemechanicalsensitivityofthesampleswasmeasuredaccordingtoGJB772A-1997method.TheresultsshowthattheRDX/Al/SiO2isthenanocompositeenergeticmaterialformedbytheAlandRDXintotheskeletonnofgelasSiO2.TheminimumparticlesizeofRDXincompositematerialis65.09nm,withincreasingtheRDXAlcontent,itsaverageparticlesizeincreases.WhenthemassfractionofRDXAlis30%,comparedwiththepureRDX,thedecompositiontemperatureofRDXinthecompositematerialdecreasesby22.4℃,comparedwiththerawmaterialRDX,thecharacteristicdropheight(H50)ofthesampleincreasesby108.6cmandthepercentageofexplosiondecreasesby60%.Keywords:solgelmethod;RDX;nanocompositeenergeticmaterial;thermaldecomposition;mechanicalsensitivityCLCnumber:TJ55;O65 Documentcode:A DOI:10.11943/j.issn.10069941.2017.08.007
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ChineseJournalofEnergeticMaterials,Vol.25,No.8,2017(656-660)!"#$
www.energeticmaterials.org.cn