超细无机复合抗菌剂的制备及在内墙涂料方面的应用

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1、西北大学硕士学位论文超细无机复合抗菌剂的制备及在内墙涂料方面的应用姓名：杨琳申请学位级别：硕士专业：化学工艺指导教师：黄岳元20100612Thepreparationoftheutral—fineinorganiccompositeantibacterialagentandapplicationinIntenorwallpaint●_●●■●●'■AbstractWimthedevelopmentofsocietyandlivingstandardofmankind，peoperpaymoreattentiontoinh

2、abitedenvironmentandthesafetyperformanceofinteriorwallpaints．Therefore，theapplicationofanti—bacterialagentsintheinteriorwallcoatingbecometheresearchhotspot．Antimicrobialcoatingisoneoftheimportanttrendsofinteriorwallpaint．So，itisgreatsignificantthatresearchboththep

3、reparationtechnologyofantimicrobialpowderwhichisbroad—spectrum，highlyefficient，durableantimicrobialpropertiesandtheapplicationofintheinnerwallpaint．Firstofall，weimprovethepreparationtechnologyofultra·finepowderofinorganiccompoundantibacterialbyexperimentalmethod，a

4、ndfoundthattheoptimalprocessingconditionis雒follows：TheconcentrationofTi-fluidis9．87％，thestirringspeedis350r／min，thedosageofsodiumhexametaphosphateisO．2％，reactiontimeis30rain,reactiontemperatureis95℃，dryingtemperatureis100℃，dryingtimeis3h，calciningtemperatureis850℃

5、，calciningtimeis4h．111eultra-fineantimicrobialpowderwaspreparedbytheoptimalprocessingconditions，themeandiameterofwhichisabout190nm，theparticlesizeisuniformityanddistributionisnarrowmeaSuredbyLaserGranularityEquipment．Antimicrobialpowderisnon-dissolution，theantibac

6、terialrateofwhichtoEcoli，StaphylococcusaureusandCandidaalbicansallachieve100％whentheconcentrationislOOmg／L，andactiontimeis40rain．furthermore，theantibacterialratestillCanarriveabove95％for6monthsafterbumtingofantimicrobialpowder．ItCanconcloundthatantimicrobialpowder

7、showsantibacterialdurabilityandthermotolerance．Secondly,inordertopreventthepowdertogathertogetherandmakethemCanwelldisperseinthebasematerialofpaint，powderwassurfacemodified，takeactivationindex弱index，usingseveralnegativeionsurfacemodificationagentsonpowdersurface．I

8、tWasdeteminedthatsodiumstearateisthebestsurfacemodifier．功eoptimalconditionsofsurfacemodificationweredecidedbynon-factorsexperimentandquadratureexperimen