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1、青島大學碩士學位論文多組份復合紗線的紡制及紗線性能研究姓名：張同華申請學位級別：碩士專業(yè)：紡織工程指導教師：韓光亭王成君20040401STUDIESONTHEMANUFACTURINGTECHNIQUEANDAbstractPROPERTIESoFCoMPoUNDYARNSEachkindoffiberhascertainmeritsandshortcomings；theblendingandinterweavingofdiffere

2、ntfiberscallgiveplaytoeachmeritandOVercometheirshortcomings，whichrealizetheirperformancecomplementaryandofferthefoundationfordevelopingthefunctionalfabricsInrecentyears，SirospunandSimfilspinningtechnologyappearedinsucces

3、sionforthemethodsofspinningcompositeyarn，theyrealizedamongwoolens，ramieandcottonspinningsystemsTheirrelativelystrongdevelopmentpotentialityofferedthesolidfoundationforsatisfyingthisrequestThispaperproposesakindofnewthoug

4、htofspinningmethodonthefoundationsofthetechnologyOnthemodifiedringspinning，thetwovingwhichwerefedintodraftingunitsinthesamespeedoutputindifferentspeedtealizeoneplyofyarncovertoanotherThespinningprocessisinfluencedbyvario

5、uskindsoffactorsandformsadynamicequilibriumUnderthedynamictensionfunctionstherelativemotionofthefiberisnotthesamebecauseofpermutationatrandomofthefiberInthespinningprocessequalizationpointoftheyamisinfluencedbytwistspinn

6、ingtension，rovinginterval，andoverfeedratioCertainrelationshipexistsamongthemThepaperfirstlyinvestigatedsinglefactorincludingtherovinginterval，theweightoftravelerthetwistoftheyam，thespeedofspindle，andtheoverfeedratioWehav

7、eunderstoodtheimpactsonperformanceandstyleoftheyamoffiveimportantfactorsthoroughlyAsaresulttheyarnproperties，suchasbreakingforce，breakingextension，Ustershairiness，index，evenness，andimperfections，abrasionresistance，havebe

8、enmeasuredanddiscussedThereasonhowthedifferentspinningfactortoinfluencetheyarnperformanceWasanalyzedWealsohaveestablishedthetheoreticalfoundationfortheactualproducingpractices，Secondly’theoptimizationofthecompositeyamwas

9、researchedinordertoinvestigatetheinfluencesofthespinningfactorsontheyamproperties，withacentralcompoundrotatabledesignunderfivelevelsTherovinginterval，weightoftravelerandoverfeedratiowhichinfluencetheyamperformancemainlya

10、retheresearchobjectTheoptimumparametersareasfollowed：rovinginterval，8ram；weightoftraveler005gs；overfeedratio8％TherelationshipbetweenstructureandperformancesofyamwerediscussedOnthecircularcrosssectionalshape，thewrapyamten

11、dstobeaflatshapewhichmakesthecross‘sectionapproximatelycircularonthelongitudedirectionthetwocomponentsaretwistedintheshapeofspiralTheyarenotblendedandCanbeeasilydistinguishedBecauseofthedifferentoutputspeedsofthetwostran

12、ds，thefasteronehasalargerradiusofgyrationandtendstobedistributedinthewrapandtheotheronetendstobedistributedinthecore。thenthecore／warpstructureisfc，rmedWealsofindthatthemoretheblendingratioofwrapyamandthemoretheoverfeedin

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