殼聚糖連續(xù)長絲制備關(guān)鍵技術(shù)研究.pdf

1、分類號：TS102.51密級：公開UDC：677學(xué)校代碼：11065碩士學(xué)位論文殼聚糖連續(xù)長絲殼聚糖連續(xù)長絲制備關(guān)鍵技術(shù)研究制備關(guān)鍵技術(shù)研究孫曉婷指導(dǎo)教師馬建偉（教授）學(xué)科專業(yè)名稱紡織材料與紡織品設(shè)計論文答辯日期2016年6月1日AbstractChitosanfiberhasgoodhygroscopicbehaviairpermeabilityantibacterialpropertyadsptionpropertybiocompa

2、tibilitybiodegradabilityitisakindofbiomassmaterialwithoutpoisonousnessharmsecondarypollutionitisusedinmedicaltextileshealthcareclothingfoodindustrychemicalindustryotherfieldswidely.Currentlythepreparationofchitosanstaple

3、fibertowhasbeenverymaturebutthereweremanyproblemsinthepreparationofchitosancontinuousfilamenttheseincreaseddifficultyfachievingindustrialization.Therearetworeasonsononehthesolidcontentofchitosanspinningsolutionislowsplit

4、tingwashingdryingmethodnotonlyeffecttheperfmanceoffiberbutalsolimitcontinuousproductionapplicationofchitosanfibergreatly.Ontheotherhalthoughthecontinuouswindinghavebeenachievedintheprocessofthepreparationofchitosanfilame

5、ntatpresentafterwoundtoacertainlengthitneedstobecutofffwashingdryingitisdifficulttorealizecontinuousspinning.Therefehowtorealizecontinuouswindingdewateringofchitosanfiberhavebecomeakeytechnicalproblemasfchitosanfilament.

6、Thesubjectcombinedtheywithpracticetopreparechitosancontinuousfilament.Firstlythepaperstudiedthecriticalprocessesofsolidificationstretchingwashingdehydrationofchitosanwetspinninganalyzedtheaffectofprocessparametersincludi

7、ngcoagulationbathcomponentscoagulationtimedrawratiowashingtimetypesofdehydratingagentoncrystallineientationmechanicalpropertiesappearanceshapeofchitosanfiberoptimizedtheprocessparameters.Secondlythesubjectdesignedhigheff

8、iciencycirculatingdehydrationsystemaccdingtothekeytechnologyincludingwindingdewateringfthepreparationofchitosanfilamentthissystemcanrealizetherecycleofabsolutealcohol.Thethreedimensionalmodelofwindingdewateringdevicewere

9、designedusingCATIAsoftwaretheseweremanufacturedsuccessfullythenthepaperusedGAMBITFLUENToffluiddynamicssoftwaretosimulatedehydrationprocessofchitosanfilamentthedistributionofflowfieldwasobtainedincludingvelocitypressuretu

10、rbulentkiicenergyanalyzedthesimulationresults.Thisapproachreducedtestcostimprovedthetraditionaldehydrationmethodsprovidedpracticalguidancesignificancefpreparingchitosancontinuousfilament.Finallythepaperdeterminedtheproce