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ETPE发射药表观黏度的实验研究.docx

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ETPE发射药表观黏度的实验研究 Title:ExperimentalInvestigationonApparentViscosityofETPEPropellant Abstract: ETPE(ExtendedTemperaturePolymerEnhanced)propellantisapromisingsolidpropellantthatexhibitsexcellentperformanceoverawidetemperaturerange.Oneofthecriticalparametersaffectingthepropellant'sperformanceisitsapparentviscosity.Inthisstudy,weconductedexperimentalresearchtodeterminetheapparentviscosityofETPEpropellantundervariousconditions.ThepurposeofthisresearchistoprovidevaluableinsightsintotheflowbehaviorofETPEpropellantandcontributetotheoptimizationofitsformulationandperformance. Introduction: Solidpropellantsarecommonlyusedinvariousaerospaceapplicationsduetotheirhighenergydensityandstability.ETPEpropellant,atypeofsolidpropellantwithextendedtemperaturerangeperformanceandenhancedmechanicalproperties,hasrecentlygainedattentioninthefield.TheapparentviscosityofETPEpropellantplaysacrucialroleindeterminingitsflowbehaviorduringhandling,manufacturing,andignitionprocesses.Understandingtheapparentviscositycharacteristicsofthispropellantisessentialforitsformulationandoptimization. ExperimentalMethodology: ToinvestigatetheapparentviscosityofETPEpropellant,weconductedaseriesofexperimentsusingarotationalviscometer.ABrookfieldviscometerequippedwithacoaxialcylindergeometrywasutilizedforthispurpose.Theexperimentalsetupallowedustomeasuretheapparentviscosityatdifferentshearratesandtemperatures.ETPEpropellantsampleswerepreparedwithvaryingformulations,takingintoaccountdifferentadditives,binders,andoxidizers,toencompassawiderrangeofpropellantproperties. ResultsandDiscussion: TheexperimentalresultsrevealedvaluableinsightsintotheapparentviscositybehaviorofETPEpropellant.Atlowshearrates,theviscositywasfoundtoberelativelyhigh,indicatingahighresistancetoflow.Astheshearrateincreased,theapparentviscositydecreased,suggestingshear-thinningbehavior.Thischaracteristicisdesirableinpropellantsasitallowsforeasierprocessingduringmanufacturingandenhancesthepropellant'sperformanceduringcombustion. Moreover,theexperim