碳素類流體的制備、結(jié)構(gòu)與特性.pdf

1、武漢理工大學(xué)碩士學(xué)位論文碳素類流體的制備、結(jié)構(gòu)與特性姓名：劉蕓申請學(xué)位級別：碩士專業(yè)：材料學(xué)指導(dǎo)教師：熊傳溪20090501AbstractCarbonmaterialsincludingcarbonblack(CB)andgraphite(GA)possessexcellentheat—resistance，chemical—resistance，mechanicalandelectricalpropertiesfortheirnan

2、osizeparticles；nanofluidsexhibitliquidlikebehaviorintheabsenceofanysolvents，incontrasttothesolidstateofnanoparticleswithoutliquidsolventsAndthenewmaterialshavenovelcharacteristicsandpotentialapplicationsinmanyfieldsInthi

3、swork，carbonmaterialswerefunctionalizedbyacidoxidationandsonication；TheionsaltsWaspreparedthroughthebondingbetweenpolysiloxanequaternaryammoniumsalts(DC5700)andthe—OHand—COOHgroupsonthesurfaceofnanoparticles；Andtheresult

4、ingnanofluidswereobtainedbythereactionwithsulfonatesalts(NPES)viaacation—anionprocessThestructuresandpropertiesofthecarbonfluidswerecharacterizedbyFouriertransformInfrared(FTIR)technique，Raman，X—rayDiffraction(XRD)，Trans

5、missionElectronMicroscopy(TEM)，ScanningElectronMicroscopy(SEM)，Thermalgravimetricanalysis(TG)testingInaddition，thecarbonblackfluid(CBF)Wasintroducetopolyvinylchloride(PVC)toproduceCBF／PVCcompositesTherheologicalresultsof

6、thenanofluidswereshowedthatthelossmodulus(G”)washi#erthanthestoragemodulus(Gt)throughoutthemeasuredtemperaturerange(25～100V)，suggestedaliquid—likebehaviorintheabsenceofanysolventsThemodifiedCBFWaswelldissolvedinorganicso

7、lvents，thusprovidinghomogeneoussolutions；a6nmthicknessshellontheCBsurfaceWasverifiedviaTEM；thefluidexhibitedgoodthermalstabilityandadecompositiontemperatureabove200。C；theorganiccontentofthederivativeWasabout81wt％；atroomt

8、emperature，theconductivityWas609x10～S／cm，suitableforsemiconductorsItsviscosityincreasedwithtemperaturedecreasedandthevaluedroppedto70PaSat80。CThroughoutthemeasuredtemperaturerange，graphitefluid(GAF)exhibiteddifferentrheo

9、logicalbehaviorfromCBFthatthemodulusdecreasedfirst，thenincreased，andfinallydropped；thetraceofviscositytemperaturehadthesimilartendency；TEMverifiedthataorganicshellontheedgeofGAF；theorganiccontentiSabout76wt％andthedecompo