SAE聚合物表面施膠劑合成與應(yīng)用.pdf

1、南京林業(yè)大學(xué)碩士學(xué)位論文SAE聚合物表面施膠劑合成與應(yīng)用姓名：秦靜申請學(xué)位級別：碩士專業(yè)：制漿造紙工程指導(dǎo)教師：戴紅旗20050401SynthesisandapplicationofSAEsurfacesizingagentAbs仃actWithprintingtechnology’sdevelopingcontinuouslyinprintingindustry，therequirementofprintabilityisimpro

2、vingcontinuouslyForinstance，papersheet’spickresistanceisneedtobehigherbecauseoftheimprovementofprintingmachine’sspeed，andpapersheetalsoisneededtohavegoodprintingopacitywhenlowerbasicweightpaperisdevelopingThus，allthesere

3、quirementspromotedthestudiesanddevelopmentofpolyemulsionsurfacesizingagenttremendouslyPoly—emulsionsurfacesizingagentstakemoreandmoreimportanceinpapermakingindustryTheyarerelatedtothetendencyofpapermakersmaterial’scompos

4、itionadjusting，printingprocessdiversityandbeinghigherspeeded，andthetendencyofproducinghigherqualitativepaperproductsSurfacecoatingactonthesurfaceofpapersheetstraightlythusitalsecoversflseriesofoperatingproblems，suchasthe

5、pollutionofmachinesystemandfrothingandlowersizingdegreeunderhightemperatureSo，anewpolymeremulsionsurfacesizingagent(belongstostyreneacrylicemulsions，SaE)wassynthesizedinlab，andonthefoundationofthe訂aditionalstyrene—acryli

6、cresinemulsionadoptingemulsionpolymerizationandaddingfunctionalmonomertomodifythetraditionalemulsionThenputtingitintosurfacesizingoperatingtotestitsperformanceMainresultshavebeenobtainedaSfollowing1、111eemulsionpolymeriz

7、ationwillberemarkablyinfluencedbytheselectivitvofmonomer，theproportionofsoftmonomerandhardmonomer也eaccessionoffunctionalmonomerTheperformanceandtheapplicationcapability&thepolymeremulsionareinfluencedbytheabovefactorsWit

8、htheincreaseofproportionofhardandsoftmonomerthesmoothnessofPaDersheetincreasedfirstandthendecreasedThewaterabsorptionvalHeofPaoersheetdecreasedfirstandthenincreasedIftlleproportionofhardandsoftmonomerchangedfrom1：1to2：3t

9、hesmoothnessofpapersheetwillbebeRerandthewaterabsorptionvalueofpapersheetwillbelowerAddingfunctionalmonomertot11etraditionalemulsionwillOccurcrosslinkingtoforillthree_dimensionalreticulationsoastoimprovewaterresistanceof

10、themembraneButthedosageoffunctionalmonomershouldnotbetoohighItwouldbebesttocontrolitnomorethan4percentofthetotaldosageofmonomer2、Theemulsionpolymerizationalsowasinfluencedbythedosageofemulsitierandinitiatorreactiontemper

11、atureandreactiontimeandagitatingspeedWiththeincreaseofthedosageofemulsifierthepolymerizationvelocityincreased，andthestabilitytoelectrolytebecamehigherButifthedosageofemulsifierwastoohighthewaterresistanceofsizedPaDershee

12、twillbeaffectednmsifthedosageofemulsifterwasfrom15to3percentoftotaldosageofmonomerandthedosageofinitiatorisfrom06to07percentoftotaldosageofmonomerandthereaction1astforabout2to3hoursunder821℃theemulsionpolymerizationwillb

13、ecompletedwell3、Duringtheprocessofsurfacesizing，oxidizedstarchandpolymeremulsionsurfacesizingagentwerecombinedtousethemtogetherUsingoxidizedstarchinsurfacesizingwillimprovetheintensityandsmoothnessofpapersheetsoastomakep