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1、無(wú)機(jī)合成化學(xué)作業(yè)(2)付悅瑋化新110141107261Title:WaterVaporTransferPropertythroughFiberAssemblieswithCompressionJournal:ProceedingsofTextileBioengineeringandInformaticsSymposium2010Pages:1007-1011Abstract:Watervaportransferpropertyoffiberassemblieswasstudiedusinganewlydevelopedtestingapparatus.Anairpumpand
2、waterbottleisusedasthewatervaporsourcefortheupperchamber.Watervaporpenetratesthroughthesamplechambertothelowerchamber.MassDiffusionconstantisgotbycomparingthetheoreticalandexperimentalmoistureconcentrationofthelowerchamber.Themethodisprovedtobeefficient.Weusedthetestertostudytheinfluenceoffi
3、berassemblydensityontheproperty,owingtocompression.Furthermoretheinfluenceoffiberarrangementwasdiscussedaswell.Thestudyprovidesawaytoselecttheoptimumstructureoffiberassemblieswiththebestwatervaportransferability.Experienment:Themeasuringdevice,consistedofanaquariumairpumpwhichwasblowingtowar
4、dstheliquidinthewatervesselwithacertainvelocitysothatwaterevaporatedproducingwatervaporandwassuppliedtotheuppermeasuringchamberthroughapipe6.Theupperchamberisopentotheatmosphere,sothepressureofitiskeptcoefficientduringthetestingprocess.Watervaporpenetratedthefibermassinfibermasschamber2.Twom
5、oisturesensorswereseparatelyplacedatthebottomoftheupperchamberandthetopofthelowerchamber.Thesignalsgeneratedfromhumiditysensorswerefedintoarecorderwheretheywereprocessedandtime-humiditycurvesweregenerated.Thefiberassembliesinthechamberwerecompressedfrom0.0071g/cm3to0.035g/cm3.Afterbeingteste
6、d,thematerialwasputoutofthechamberandthenewmaterialofthesamedensitywastestedinsteadandthetestwasrepeatedthreetimesatagivendensity.Theaveragevaluewasused.Testingofalldensitieswasofthesameprocess.Thedevicewashousedinachamberwiththetemperatureof28.0±0.5°Candhumidityof65±5%.Watervapordiffusionre
7、sistanceisalwaysusedtoevaluatewatervaportransferabilityoffiberassemblies.Wecangettheparameterfromthefollowingmodel.AsshowninFigure2,constanthumidityisfixedintheupperchamberandroomhumidityismaintainedinthelowerchamberinitially.Moisturetransferredfor
