英语口语PPT

Respondent：WANGXinfuInstructor：XUYuxin2018/05/29StudyontheImprovementofStarchSeriesBodyReinforcingAgentandItsRelatedMechanismResearchbackgroundandsignificance1ResearchContent2Conclusions3ReportOutlineThedevelopmentofenvironmentallyfriendlyceramicproductswithhighaddedvalueandhightechnologyisthedevelopmentdirectionoftheceramicindustryinthefuture.BackgroundWiththelarge-scaleindustrializationandmechanizationofceramicproduction,theraworesludgewillalsobeconsumedinlargequantities,andhigh-qualityoresludgewillsoonbeexhausted.ResourceconservationEnvironmentalprotectionCeramicbodyextractenhancer:Aslongasthematerialcanbeusedtoincreasethestrengthofthebody,itcanbecalledenhancer.Itischaracterizedbyenhancingthestrengthoftheceramicbodybasedonitseffectonthefluidityandrheologyoftheslurry.CMCPolyvinylalcoholThemainbodyenhancerclassificationLigninHumicacidsodiumBodyEnhancerOverviewModifiedstarchStarchseriesbodyenhancerAdvantageThesourceofrawmaterialsisconvenient,mainlystarch,andthecostislow;Theceramicbodyhasabetterreinforcingeffect.DisadvantageComparedwithforeignhigh-performanceceramicblankreinforcements,theenhancementeffectneedstobeimproved;Afterbeingstoredforaperiodoftime,itiseasytoregenerate(thephenomenonofviscosityreduction),whichisnotconducivetothepreservationofthebody.SolutionSodiumacrylatehasagoodthickeningeffectonstarch.TheVanderWaalsforcebetweenthecompositionandthestarchpolymercausesthestarchparticlestobindwitheachother,andatthesametime,italsopromotesthehydrogenbondbetweenthestarchmoleculestoenhancetheviscosityofthestarch.ExperimentalflowchartSodiumpolyacrylateWetbilletDrybilletAcrylicSodiumhydroxideSodiumpersulfate4-methoxyphenolAnalysisofdryandwetbilletsContrastanalysiswithblankIndustrialproductionapplicationsThreedayslatertestreturnViscosityevaluationAnalysisofsodiumpolyacrylateforfurtherevaluationNoteasytoreturnIncreasedviscosityEvaluationoffoldingresistanceofbricksmadebydifferentmethodsSinglefactortest,orthogonaltestTheinfluenceofdifferentfactorsTheeffectofdifferentmonomerconcentrationonviscosity18%25%30%40%2.02.53.03.54.04.5粘度(mPa/)浓度粘度55℃60℃80℃2.53.03.54.04.55.05.5粘度(mPa/)反应温度(℃)粘度TheeffectofdifferentreactiontemperaturesonviscosityFromthefigureabove,itcanbeseenthatasthemonomerconcentrationincreases,themeasuredviscosityofthepreparedpolymeralsoincreases.Fromthefigurebelow,thebestreactiontemperatureisaround60℃.TheinfluenceofdifferentfactorsTheeffectofdifferentreactiontimesonviscosity1.51.61.71.81.92.04.24.44.64.85.05.25.45.65.8粘度(mPa/)时间(h)粘度Fromthefigure,itcanbeconcludedthatasthereactiontimeprolongs,theviscosityofthepreparedsodiumpolyacrylateincreases,andtherelativemolecularmassofthepolymersharplyincreases,buttheviscositygrowthtrendbecomesslowerover2hours.Rebirthtest01234567890246810粘度(mPa/S)编号第一次测试粘度三天后测试粘度RebirthtestAscanbeseenfromthefigure,whenTY-2wastestedalone,itwaseasytoregenerate.Afterthreedays,theviscositywas1.33mPa/S,whichwasadecreaseof25.70%.Theviscosityoftheimprovedenhancerincreasedwithtime,andtheaverageviscosityis19.17%.编号第一次测试粘度/（mPa/S)三天后测试粘度/（mPa/S提高率/%平均提高/%0（单独TY-2测试）1.791.33-25.7013.183.9223.2719.1724.165.0220.6735.056.1221.1944.425.3521.0456.777.8315.6664.124.9620.3975.516.1010.7184.985.116.5798.0010.6433.00Orthogonaltestanalysis编号实验号因素粘度/（mPa/S)与TY-2结合测试粘度/（mPa/S)丙烯酸浓度A（%）反应温度B（℃）反应时间C（h）列号1231A1B1C11112.183.182A1B2C31232.494.163A1B3C21324.505.054A2B1C32133.934.425A2B2C22225.656.776A2B3C12312.684.127A3B1C23124.275.518A3B2C13214.384.989A3B3C33337.508.00TY-2单独测试粘度1.79mPa/SThroughorthogonalexperimentalanalysis,sodiumpolyacrylatewiththebestviscositywasobtained,anditwasdopedintoTY-2,followedbyanalysisoftheoptimalconditionsofsynthesis.Whenthe30%concentrationofacrylicacidreactedat60celsiusdegreesfor1.8hours,thesynthesizedsodiumpolyacrylatehadthebesteffect.EvaluationofreinforcementsformakingblanksEvaluationofgreenbodyenhancerFromthedatainthetable,itcanbeconcludedthatsodiumpolyacrylatehasagreatimprovementonTY-2,enhancerenhancereffectissignificantlyimproved,thebestgroupandtheblankgroupincreasedbyanaverageof65.92%.Thisgrouphasanaverageincreaseof20.78%overthegroupthatonlyaddedTY-2.Fromthecomparisonofthesetwodata,itisfeasibletoaddsodiumpolyacrylatetoimprovestarchseriesblankbodyenhancer.AchievementsWhentheconcentrationofacrylicacidis30%,thereactiontemperatureis60°C,andthereactiontimeis1.8h,thesodiumpolyacrylatepreparedbypolymerizationhasthebesteffect.Whenthedopingamountis20%to30%ofthereinforcingagent,theaveragegreenbodystrengthincreasesby12.92%to21.08%(comparedwiththeadditionofTY-2only)ThedefectofTY-2starchgreenbodyenhancerwasimproved.Afteraddingsodiumpolyacrylate,theimprovedgreenbodyenhancerwastestedforrejuvenation,andtheviscosityincreasedbyanaverageof19.17%.Rawmaterialsodiumacrylate(3wt%ofreinforcingagent)andinitiatorweremixedintoblanksforevaluation.Theaveragestrengthoftheblankreinforcementwasimprovedby30%beforeimprovement.Conclusions