聚酰胺熱塑性彈性體及其纖維的制備.pdf

1、北京服裝學(xué)院碩士學(xué)位論文聚酰胺熱塑性彈性體及其纖維的制備姓名：陳新拓申請學(xué)位級別：碩士專業(yè)：材料學(xué)指導(dǎo)教師：李小寧20050101北京勝裂學(xué)院研究生學(xué)位論義ABSTRACTInthisthesis，thermoplasticelastomerwhosehardsegmentisPA6andsoftsegmentisPEGwassynthesizedbytowstepprocessInthefirststep￡caprolactamwas

2、hydrolyticringopeningpolymerizedwithH20astherl。ngopeningagent，02一aminocaproicacidascatalyzerandadipicacidasthemolecularweiightregulatoratreactingtemperatureof2500CPA6oligomerwithtwoendcarboxylwasprepared，thentheextractio

3、nanddrynesswerepracticedtotheoligomerthemolecularweightoftheproductwasmeasuredbyacid—basetitrationThesecondstep，mixedthePA6oligomerandagw‘enweighl。ofPEGwithacertainlmolecularweightinreacteraddingthermalstabilizer，catalyz

4、erandathirdcomponent，etc，elevatedtemperatureat250。CwithN2forprotection，airproofedthereactorandvacuumizedslowlywhenthefirstdropofmicromoleculeliquidhasseparatedout，madeabsolutepressurebelow30Pa，stoppedreactionwhenthevisco

5、sityofthemeltedpolymerwashighenoughAseriesofPolyamidethermoplasticelastomerscanbeobtainedbychangingcompoundingratioofrawmaterialaudreactionconditionflikemolecularweightofPEGadditionlevelofPEQetc)FTIRwasusedtodeterminethe

6、macromolecularstructureofmaterial，thethermalcharacteristicsofthispolymerwasanalyzedbyDSC，thedynamicsofisothermalcrystallizationandcrystallinityofcopolymerwasstudiedbyopticaldepolarizationandWAXD，respectivelyTheeffectofco

7、polymer’SmolecularstructureonitspropertywasconstruedForthecopoly—elastomerwhichcanbesuitlorspinning，thegranulernauufactureandpreparativefromspinningwereacted，thespinningwascarriedoutonsimpleporephmgertypemeltextruderStre

8、tchingandthermalsettingwereprocessedonfreshlyformedfilamentbyusingdifferenttcchlmlogicalparametersMechanicalpropertyofthefiberwasmeasuredwithstudying011elasticityandelasticrecoveryemphaticallyCrystallinityofthefiberwasst

9、udiedbyX—ray，tilerelationshipbetweenmechanicalpropertyandstructureofthefiberwasaoalyzedThefiber’Selasticrecoverywasimprovedremarkablyitcanbepracticedvaluablythefeasibilityofmakingelasticfiberfrompolyamidethermoplasticela