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1、AbstractTissuescaffolds,oneofthethreemajorelementsoftissueengineering,itsapplicationintissueengineeringfieldhasapivotalposition.Scaffoldsfortissueengineeringofthecarrier,itisathree-dimensionalstructureoftheporousbody,musthaveenoughsmallporeandhighporosity,andbetweentheholeandtheholeshoul
2、dbeconnectedeachother.onlyinthiswayafterimplantedcellscanentertheinteriorofthescaffold.,cellsoftherequiredwater,inorganicsaltandothernutrientsiseasytopermeate,andcangrowwell,formoforganizationtohavebetterperformance.Scaffold,therefore,isnotonlyprovidesthecellgrowthofthethreedimensionalen
3、vironmentandmetabolism,butalsodeterminestheshapeandsizeofnewtissuesandorgans.Givensupporttostrictrequirementofthethree-dimensionalstructure,intheprocessofscaffoldproduction,controlofthefluidmaterialamountextrusionprecisionbecomesveryimportant,itdirectlyaffectstheformingeffectof3dscaffold
4、s.Mainworkandresearchcontentofpaperareasfollows:(1)Makeapapersummarizesonthematerialmicroextrusiontransfertechnology,andpointsouttheadvantagesanddisadvantagesofeachmode,aswellasthesuitablesituation,mainlyintroducedthewidelyusedrapidprototypingtechnologyanditscommonseveralkindsofmethods.A
5、ndthenathomeandabroadfortissueengineeringscaffoldsweresummarized,thecurrentstatusoftheinductionsummarycontentcanprovidecertainreferencefortheresearchersinrelatedfields.(2)Intissueengineeringmaterial,summarizedthecommonlyusedbiologicalmaterialsandthescopeofusingtheclassificationforeachmat
6、erial.Introducesthecommonfluidafterclassificationandrheologicalpropertiesofthematerial,analyzestheapplicationofbiologicalmaterialmadeinsupportanditsrheologicalproperties,haveprovidedthecertainbasisforsubsequentmodeling.(3)Wallslipisoneoftheimportantcharacteristicsofbiologicalmaterialvisc
7、oelasticbehavior.Intheconventionalextrusionflowanalysis,usuallyassumefluidadhesiononthechannelwall,thatis,betweenthechannelwallandtherelativespeediszero,noslipboundarycondition.However,alargenumberofstudieshaveshownthatundercertainconditionsmeanexperienceslidingalongthewa