納米ZnO晶須的制備、改性及在聚丙烯酸酯類涂料中的應用.pdf

1、湖南大學碩士學位論文納米ZnO晶須的制備、改性及在聚丙烯酸酯類涂料中的應用姓名：賀衛(wèi)衛(wèi)申請學位級別：碩士專業(yè)：材料學指導教師：李玉平20060325納米ZnO晶須的制備、改性及在聚丙烯酸酯類涂料中的應用AbstractThesuitbaletechnologicalparametersofsynthesizingnanoZnOwhiskersbyaonestepwetchemicalmethodwithlowtemperatureinn

2、ormalpressurewereinvestigatedinthispaperandthemodificationeffectsofaspreparednanoZnOwhiskersbybuiltsurfactantindifferentdispersionconditionwerealsostudiedThepolyacrylatenanocompositecoatingswerepareparedbythedispersionof

3、nano—ZnOwhskersinpolyacrylate，thehardnessandotherbasisperformanceofnanocompositefilmwereevaluatedThroughchangingthedifferentsyntheticparametersinturntopreparefinalproducts，andcharacterizingaspreparedproductswithDSCTG，XRD

4、，TEM，F(xiàn)TIR，thebesttechnologicalparametersofsynthesizingnano—ZnOwhiskerswereattained12mg。L—ZnS04wasaddeddrop—wiseinto30mg‘L。1NaOHunderstirringinbakerthatwasheatedatatemperatureof550Cinthermostatwaterbath，followingthat，001m

5、g’L—CIsH29Na03S(DBS)wasintroducedintotheaforementionedsolutionInthemonitoringofpHmeter，thepHvalueofreactionmixturewasadjustedtoabove9thoughcontrollingtheamountofZnS04added2hourslater，theprecursorwasharvestedbyfilteringun

6、dervacuumandwashing3to5timeswithdistilledwaterandabsoluteethanol，finally，thenaonsizedZnOwhiskerswasattainaftertheprecursorwasdriedinavacuumoven4hat800CDependingonthesyntheticconditionsused，ZnOcanbeformeddirectlyinaqueous

7、solutionwithoutcalcinationTransmissionelectronmicroscope(TEM)observationrevealesthatnano—ZnOwhiskersareneedle—likeorrod—likemorphology，theyhavediametersrangingfrom30to50amandlengthsupto400nmThenanoZnOwhiskersshowhighcrys

8、tallinepattern，andallthediffractionpeakscanbewellassignedtothehexagonal—phaseZneportedintheliterature(Wurtzite—type，spacegroupP63mc)，thecalculatedcellparametersofaoandCOare325and521A，respectivelyNoneotherphasescanbeobser

9、vedinthepatterverifyingthatthesampleisphasepureTheHRTEMimageshowsthelatticespacingof026nm，correspondingtoalatticeconstantofthe(002)planeofwurtzitestructuredZnO，andimpliesthepreferredgrowthorientationofZnOnanorodsalongthe

10、(002)planeInmodificationofnano—ZnOwhiskersexperiments，usingDBSlPEG400whichcontaining30％DBSasbuiltmodifyingagent，controllingtheconcentrationofDBS／PEG400is400mg。L～，andagitatingfor60min，thebesteffectsofmodificationcanbegott