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1、東南大學(xué)碩士學(xué)位論文新型高效減水劑的合成及性能表征姓名：許澤寧申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：化學(xué)工藝指導(dǎo)教師：肖國(guó)民20090301東南大學(xué)碩士學(xué)位論文ABSTRACTThepolycarboxylicseriesofwaterreducingagentischaracteristicofhighwaterreducingratioandpreventingconcretemixfromslumplosswithdurationoftimeN

2、owadays，ithasbecomethemodemresearchfrontierofhighperformancewaterreducerFromthepointofthechemicalstructureandworkingprinciplethesynthesistechnologyofhi曲performancewaterreduceranditscopolymerizationkineticswerestudiedwith

3、theguidanceoftheoryofsynthesismethodsItisdividedintofoursectionsasfollows：PolycarboxylatecopolymerswiththepolyethyleneglycolsidechainweresynthesizedbyfreeradicalcopolymerizationandgraftreactionTheinfluencingfactorsofther

4、eactionsuchastemperature，reactiontime，concentrationofinitiatorandfeedratio，wereverifiedrespectivelyThen，thedifferenceoforganicsolventandwaterfortheyieldsofcopolymerswerecompared，moreover，theeffectsoftemperatureandtimeont

5、herateofgraftreactionwereinvestigatedtooThestructureofsuperplasticizerwascharacterizedbyIRandtheresultsshowthatunderfeedratiol：land3訊％initiator，theyieldsofcopolymerizationinorganicsolventareuptomorethan80％duringhalfanhou

6、rTheoptimaltemperatureandtimeofgraftreactionare120℃觚d6handtheratesofgraftreactionareupt03028％Polycarboxylatesuperplasticizerwaspreparedbyfreeradicalcopolymerizationofmaleicanhydride，acrylicacidandsodiumallysulfonateinpre

7、sentofammoniumpersulfateasinitiatorThefactorsofreactiontemperatureconcentrationofinitiatorandmonomerswereinvestigatedItshowedthattheoverallobservedcopolymerizationactivationenergyofthesystemWas37604kJlmol，andtherateofcop

8、olymerizationwaspositivelyproportiontotheconcentrationofinitiatortothepowerofO361andtotheconcentrationofmaleicanhydridetothepowerof11748andacrylicacidtothepowerof11952andsodiumallysulfonatetothepowerof14229respectivelyTh

9、eresultsshowthattheconcentrationofsodiumallylsulfonatehasamuchgreatinfuenceThereactionconditionsofinhibitormoleratio，reactiontime，temperature，molecularweightforesterificationwereinvestigatedbyazeotropicdistillationusingt

10、olueneThewaterreducingeffectswerestudied，theimpactsofdosageofwaterreducingagentthelengthofsidechainsandtheconcentrationofinitiatorforthepastefluiditwereexaminedTheresultsshowthatpastefluiditisupto280millwhendosageofwater

11、reducingagentis03％WehaveinitiallyproposedthepreparationofwaterreducingagentbysulfonatedwastepolyesterandcarriedoutsomeexploratoryexperimentexperimentsSomestrawyellowsolidWasyieldedbysulfonatedpolyesterandtheproductswerei

12、nsolubleindichloromethaneFromtheIRspectrum，theappearancesofthepeakat1250cm11150cm1suggesttheexistenceofsulfonicgroupBecausethismethodissimple，economicalandpractical，sulfonatedwastepolyesterwillhavepotentialapplicationpro

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