钛钴尖晶石颜料制备与性能研究

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1、南京理工大学硕士学位论文钛钴尖晶石颜料制备与性能研究姓名：王海峰申请学位级别：硕士专业：材料学指导教师：叶明泉20100622AbStraet硕^：论文AbstractInverseSpinelCobaltTitanateGreenpigmentisallexcellentMixedMetalOxidePigment．Ithasexcellentchemicalresistance，outdoordurability，lightfastness，heatstabilityandisnon-bleedingandnon-migrato

2、ry．IthavebeenusedinawiderangeofapplicationsincludeRPVC，Polyolefins，EngineeringResins，PaintsandCoatingsincludingGeneralindustrialCoilandExtrusioncoatings．nepreparationofthepigmentshasbeenpaidmoreattentionbecameofthedevelopmentofMixedMetalOxidePigment．nlepigmentsareusual

3、lypreparedbysolidstatereactionrequiredthehighcalcinationtemperatureandlongtime．AsthechemicalsynthesismethodsCo·precipitationmethodandthecitricacidsol—gelmethodisabletoprovidehighchemicalpurity，precisecomposition,anduniformmicrostructure．Therefore，Co-precipitationmethod

4、andthesol·gelmethodhasbeenextensivelyemployedinthepreparationofmanypigments．InthisthesiswepreparedthepigmentsbyCo-precipitationmethodandthecitricacidsol—gelmethod．Thermogravimetric(TG-DTA)analysis，Laserparticlesizeanalyzer，X-raydiffraction(XRD)，Transmissionelectronmicr

5、oscope(TEM)，FT-IRandUv-visSpectrophotometerwereusedtocharacterizepigments．111emajorworkissummarizedasfollows：ForCobaltTitanateGreenpigmentpreparedbyCo-precipitationmethod，theeffectofthespeciesofprecipitator,thespeciesanddosageofthedispersant，lawmaterialratio，calcinatio

6、ntemperatureonthecrystalmorphology，particlesizeanddistributioninfraredabsorptionproperty,heatstabilityandcoloringpowerwerediscussed．TheresultsindicatedthatWhenCo：Ti=2：l，NaHC03isusedastheprecipitant，andreactiontemperatureis75。C，CrystallinewiⅡlUniformmorphology,brightcol

7、orandPurespinelPhaseofC02Ti04pigmentsCanbesynthesized，谢thanaverageprimaryparticlesizearoundaboutl00-200nto，aftertwohours’calcinationsatatemperatureof1000"(2．CobaltTitanateGreenpigmentswerealsosuccessfullypreparedbythecitricacidgelmethodusingCobaltnitrateandtetra-n—buty

8、ltitanateasCo，Tisources，andcitricacidascomplexingreagent．Theresultsindicatedthatsingleinversespinelphaseandwell-cryst