納米二氧化硅表面改性研究.pdf

1、武漢理工大學(xué)碩士學(xué)位論文納米二氧化硅表面改性研究姓名：湯先文申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：材料學(xué)指導(dǎo)教師：單松高張超燦2003.5.1abstractInthispaper，twokindsofsurfacemodificationmethod(chemicalmeasureandsoap—freepolymerization)areusedAfterthesurfaceofnano—silicawasmodified，nanocoating

2、ispreparedbymixingnano—silicaintopolyacrylateemulsionThepropertiesofmembraneformedhavebeenprovedtobeimprovedMoreemphasiswillbeputonanalyzingstainresistanceandscrubbingresistanceNano—silicainaqueoussolution(solidcontentu=

3、25％30％、particlesize中s2815rim、PH=91hasbeenpreparedbysiliconThentwomodificationmeasuresareusedtomodifynanosilicaparticleAccordingtochemicalmethod，modifierisgotbysilanecouplingagent(WD30)graftedwithPEGofdifferentmolecular，w

4、hichmakethesurfaceofnanosilicaamphiphilicandimprovetheinterfaceofnano—silicaSoapfreepolymerizationmethodmeansmonomers(MMA)polymerizearoundthesurfaceofnano—silicawithoutsoup，absorbedbytheforceofsurfaceBythemeansofTEMandpo

5、tentialtest，theimprovementofdispersalofnanosilicahasbeenproved：particlesizeofaggregatesdecreasedfrom120200nmto80nmEffectsofmodifcationmeasureandthecontentofnanosilicatoexperiment：generallychemicalmeasure，withhigherchemic

6、albandforce，willleadtobetterresultsthansoap—freepolymerizationmeasureTochemicalmeasure，thehighermolecularofPEGis，thebetterresultwillbegot；tosoap—freepolymerization，onthecontrary，thecontentofPMMAenwrappingnanosilicaeffect

7、fewonresults，whichisobviouslyshownindataofstainresistanceWiththehorizoninrateofpigmentandfilledhighcontentofnanosilicawillbebenefittesultofexperiment，forexample，rigiditywillincreasewiththecontentofnanosilicaraisingMaking

8、upnanopaintmixedwithnano—silica，theimprovementofitspropertieshasbeentestedThemechanicpropertyofmembraneformedincreased，suchastensilestrength、elongationatbreak、surfacerigidity；Thescrubbingresistanceandstainresistanceofthe