纺织材料学英文-1Introduction to Textile Materials Science

来自www.cnshu.cn中国最大的资料库下载IntroductiontoTextileMaterialsScienceDr.YipingQiu邱夷平DonghuaUniversity来自www.cnshu.cn中国最大的资料库下载CourseSyllabus•Textbook–KathrynL.Hatch,TextileScience,WestPublishingCompany,1993.•Referencebook–Yao,M.et.al.TextileMaterials(inChinese),2nded.,TextileIndustryPublishingHouse,1990来自www.cnshu.cn中国最大的资料库下载Justification•Textilematerialsarethebasicmaterials.Itiscrucialtoestablishabasicunderstandingofthesciencegoverningthebehaviorofthesematerials.•ThecourseistaughtinabilingualsystemsuchthatthestudentswillhaveanopportunitytoenhancetheirEnglishabilitywhilelearningthekeyknowledgeintextiles.来自www.cnshu.cn中国最大的资料库下载来自www.cnshu.cn中国最大的资料库下载Grading•Gradesforthiscoursearedeterminedby–homework(10%),–twotests(30%each)and–onefinalexam(30%).ThefinalgradewillbefromAtoFcorrespondingtothetotalscoreaccordingtothestudenthandbook.来自www.cnshu.cn中国最大的资料库下载Attendance•Attendanceismandatory.•Aclassrollwillbetakenatthebeginningofeachclass.•Missingeverythreetimeswithoutreasonableexcusesinthesemesterwillhavecoursegradededucted10pointsoronelettergrade.•Aperfectattendancerecordwillberewarded5pointsintheirtotalcoursegrade.来自www.cnshu.cn中国最大的资料库下载HonorCode•Studentswillbeexpectedtoadheretotheguidelinesforacademicintegrity.ThatmeansthatANYactionthatgoesagainsttherulessetforthwhengivinghomeworkortestortakingclassrollwillbedealtwithinaverystrictfashion.•Gradesarevaluable:honorandintegrityarepriceless.来自www.cnshu.cn中国最大的资料库下载TopicalOutlineSubjectNo.Lectures1.Introduction,classificationanddefinitionoffibers42.Molecular,microandmacrostructuresoffibers43.Morphologicalpropertiesoffibers44.Moistureabsorptionpropertiesoftextiles45.Mechanicalpropertiesoffibers66.Firsttest(Oct.15)17.Thermal,optical,andelectricalpropertiesoffibers68.Structures,properties,andidentificationofcommoditytextilefibers69.Classificationandstructureoftextileyarns410.Structuralparametersoftextileyarns611.Mechanicalpropertiesoftextileyarns212.Secondtest(Dec.1)113.Classificationoftextilefabrics414.Performancepropertiesoffabricforapparels615.Textiletestingandqualityevaluation416.Finaltest来自www.cnshu.cn中国最大的资料库下载Introduction•Readingassignment–Textbook:KathrynL.Hatch,Chapter7,TextileScience,WestPublishingCompany,NewYork,USA–Handoutswhenavailable.来自www.cnshu.cn中国最大的资料库下载Introduction•Expectations–Attheconclusionofthissection,youshouldbeableto:•Classifyfibers•Describespinningprocessesforfibers•Describeapplicationandfuturedevelopmentoffiberindustry来自www.cnshu.cn中国最大的资料库下载Introduction•Whatisafiber?–Largelengthtowidthratio–Smallenoughtobeflexible•Textilefibers–Minimumlength:12.5mm,desirable:20mm.–Strongenoughtobeprocessed来自www.cnshu.cn中国最大的资料库下载Classificationoffibers•Polymeric•Inorganic•Engineered•Unconventionallyshaped来自www.cnshu.cn中国最大的资料库下载Classificationoffibers•Polymeric–Naturalfibers•cotton•wool•silk•others:flex,jute,ramie,hemp来自www.cnshu.cn中国最大的资料库下载Classificationoffibers•Polymeric–Regeneratedfibers•History:–inventedin1890’sbySchoenbein–Commerciallyavailablein1896•Examples–VicoseRayon–Celluloseacetate–Cellulosetriacetate–Lycel来自www.cnshu.cn中国最大的资料库下载Classificationoffibers•Polymeric–Syntheticfibers•History–WallaceCarothersatduPontinventedaseriesofpolymers•Majortypes–Polyester–Polyamide»Nylons»Aromatic»Kevlar»Nomax来自www.cnshu.cn中国最大的资料库下载Classificationsoffibers•Polymeric•Acrylic(copolymersofPANandothervinylpolymers)•Modacrylic•Polyolifin–Polyethylene–Polypropylene•Elastomeric–Spandex(polyurethane)•Polyvinylalcohol•Polyvinylchloride来自www.cnshu.cn中国最大的资料库下载Classificationsoffibers•Inorganic–Natural•asbestos–Manmade•glass•carbon/graphite•ceramic•metal来自www.cnshu.cn中国最大的资料库下载Classificationsoffibers•EngineeredfibersBicomponentfibers:•Sheath-core•Sidebyside•Islandinsea(matrixfibril)•Citrus•Unconventionallyshaped–4DG–Hollow来自www.cnshu.cn中国最大的资料库下载Fibersandtheirproperties•Naturalproteinfibers–highresilience•abilitytodoworkagainstrestrainingforcesduringreturningfromdeformedstate–Hygroscopicorhydrophilic•likeswaterandabsorbswater–Highheatofwetting–Mostmechanicalpropertieschangewhenabsorbingwater来自www.cnshu.cn中国最大的资料库下载Fibersandtheirproperties•Naturalproteinfibers–Harmedbyalkalis,e.g.NaOH–Harmedbychlorinebleach&perspiration–Weakened&yellowedbyUVlight–Notreadilyflammable来自www.cnshu.cn中国最大的资料库下载Fibersandtheirproperties•Naturalcellulosefibers–Highmoistureabsorption–Mechanicalpropertieschangeuponwaterabsorption–Swellsinwaterbutreversibleupondrying–Highresistancetoalkalinedegradation–Lowresilience来自www.cnshu.cn中国最大的资料库下载Fibersandtheirproperties•Manufacturedcellulosefibers–Lowtenacity–Muchweakerwhenwetthandry–Lowabrasionresistance–MediumresistancetoUVlight–Drycleaningorgentlecycle来自www.cnshu.cn中国最大的资料库下载Fibersandtheirproperties•Syntheticfibers–Lowmoistureregain–Lowestsofteningtemperatures–Highlyoleophilic(loveoil)&hydrophobic(hatewater)–Highestelectricalresistivity–Highesttoughness–Mediumtohighresilience–Highresistancetomoths,meldew&fungi来自www.cnshu.cn中国最大的资料库下载Chapter7FiberMorphologyandFormationMorphology–Studyofsize,shape,andstructureoffibersMacrostructure–Featureswhicharediscerniblebyh