磺化淀粉開發(fā)用作新型水泥減水劑的研究.pdf

1、天津大學(xué)碩士學(xué)位論文磺化淀粉開發(fā)用作新型水泥減水劑的研究ResearchofexploitingsulfonatedstarchasanewWaterReducingAdmixture學(xué)科專業(yè)：有機(jī)化學(xué)研究生：戚紅卷指導(dǎo)教師：程發(fā)教授天津大學(xué)理學(xué)院學(xué)院化學(xué)系二零零伍年壹月AbstractThetechnologypropertiesandmechanismofusingsulfonatedstarchasWRA(WaterReducin

2、gAdmixtures)issystemicallyillustratedinthisarticleTheresearchisperformedinordertodevelopsulfonatedstarchasanewsuperplasticizeradmixtureandachieveindustrializationfmaltyTheprojectshowsgreatsignificanceandprospefit)；insolv

3、ingmanyproblemsexistedinthefieldofWRAinChinaandunfoldinganewappliedfieldfornaturalpolymerstarchSulfonatedstarchispreparedbyintroduce—S03HtothemolecularchainofstarchAnditwasextensivelyusedinthefieldssuchasfood，pharmacyand

4、petroleumetc，WRAisonekindofthemostimportantcementadmixturesNowLigninsulfateandsulfonatednaphthaleneformaldehyde(SNF)aremostcommonlyusedinChinaThetwokindsofWRAbothhavetheiroxvndisadvantages；thereforeItisurgenttoexploitnew

5、kindsofWRASulfonatedstarchhasbeenprovedteducewaterintheoryyetnoconcernedresearchhasbeenreportedinliteraturesInthisarticle，sulfonatedstarchofacertainDS(degreeofsubstitution)isverifiedthatitcanreachahighrateofwaterreducing

6、Meanwhile，theresearchshowsthatsulfonatedstarchsetretardingofcementintensivelySosulfonatedstarchCanbeexploitedasanewtypeofsetretardingandsuperplasticizeradmixtureInadditiontheappliedrangeofsulfonatedstarchcouldbebroadened

7、bymixhardeningacceleratingadmixtures。Theoverallresultsasfollows：1，Tomeetthedemandofwaterreducing，sulfonatedstarchispreparedbymakingcomstarchreactwithC1S03H，andC1CH2CH2C1isusedasthesolventFurthermore，theinfluencingfactors

8、andtheoptimaltechnologyofsulfonationisstudiedbyorthogonalexperimentsTheresearchshowsthattheratioofCIS03／Starchisthemaininfluencingfactorofsulfonation，whereas，thereactiontemperatureandthereactiontimehavelittleeffectonsulf

9、onationWhentheDSofS03Hisdesignedto08，theactualDSreachthemaxof025approximatelyinthetemperaturerangeof10～40“Candthetimerangeof1～4h，butreactionefficiencyisabouttodropMeanwhile，inordertosimplifythetechnologyandreducethecost，