Structure and properties of Vortex yarn

Title Alternative:Structure and properties of Vortex yarn
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dc.contributor.advisorKřemenáková, Dana
dc.contributor.authorMongale, Gaopalelwe Itumeleng
dc.date2010
dc.date.accessioned2014-01-10
dc.date.available2014-01-10
dc.date.committed2010-05-17
dc.date.defense2010-06-01
dc.date.issued2010-01-01
dc.date.submitted2009-10-30
dc.degree.levelmgr
dc.descriptionkatedra: KTT; přílohy: 1 CD; rozsah: 74 s.cs
dc.description.abstractThe goal of this dissertation was to investigate the influence of technological parameters including the spindle diameter, yarn delivery speed, main draft and yarn fineness on the structure and properties of Vortex yarn. The investigation was based on yarns comprising 100% viscose with different fineness (from coarser to finer yarns),delivery speed ,spindle diameter and main draft. Geometrical properties(ribbon length, ribbon diameter and ribbon angle) of the yarns were investigated using Image analysis, which was used to capture and process images of the yarns. Ribbon length was used to estimate the amount of twist and twist coefficient of the and ribbon angle was used to calculate twist intensity. The yarns mechanical properties(tensile strength, hairiness, evenness and yarn imperfections) were investigated on the investigated using Uster Tester 4 and yarn hairiness was also investigated using Zweigle G567.Statistical analysis was used to investigate the normal distribution,95% confidence interval(upper and lower limit) and mean values. The properties of the yarn were analyzed in relation to twist coefficient. The results shows that delivery speed and spindle diameter have influence on ribbon twist and twist coefficient. Twist has significant influence on the diameter and ribbon angle of the yarn. Higher speed and larger spindle diameter yield yarns with better evenness and strength compared to yarns produced at low speed and smaller diameter. However yarns High twist increases ribbon angle.en
dc.description.abstractThe goal of this dissertation was to investigate the influence of technological parameters including the spindle diameter, yarn delivery speed, main draft and yarn fineness on the structure and properties of Vortex yarn. The investigation was based on yarns comprising 100% viscose with different fineness (from coarser to finer yarns),delivery speed ,spindle diameter and main draft. Geometrical properties(ribbon length, ribbon diameter and ribbon angle) of the yarns were investigated using Image analysis, which was used to capture and process images of the yarns. Ribbon length was used to estimate the amount of twist and twist coefficient of the and ribbon angle was used to calculate twist intensity. The yarns mechanical properties(tensile strength, hairiness, evenness and yarn imperfections) were investigated on the investigated using Uster Tester 4 and yarn hairiness was also investigated using Zweigle G567.Statistical analysis was used to investigate the normal distribution,95% confidence interval(upper and lower limit) and mean values. The properties of the yarn were analyzed in relation to twist coefficient. The results shows that delivery speed and spindle diameter have influence on ribbon twist and twist coefficient. Twist has significant influence on the diameter and ribbon angle of the yarn. Higher speed and larger spindle diameter yield yarns with better evenness and strength compared to yarns produced at low speed and smaller diameter. However yarns High twist increases ribbon angle.cs
dc.formattext
dc.identifier.urihttps://dspace.tul.cz/handle/15240/6683
dc.language.isoen
dc.publisherTechnická Univerzita v Libercics
dc.subjectvortex yarn structure and propertiesen
dc.subjectspindle diameteren
dc.subjectyarn delivery speeden
dc.subjectyarn finenessen
dc.subjectimage analysisen
dc.subjecttwist coefficienten
dc.subjectribbon angleen
dc.subjecttwist intensityen
dc.subjecttensile strengthen
dc.subjecthairinessen
dc.subjectevennessen
dc.subjectyarn imperfectionsen
dc.subjectstatistical analysisen
dc.subjectvortex yarn structure and propertiescs
dc.subjectspindle diametercs
dc.subjectyarn delivery speedcs
dc.subjectyarn finenesscs
dc.subjectimage analysiscs
dc.subjecttwist coefficientcs
dc.subjectribbon anglecs
dc.subjecttwist intensitycs
dc.subjecttensile strengthcs
dc.subjecthairinesscs
dc.subjectevennesscs
dc.subjectyarn imperfectionscs
dc.subjectstatistical analysiscs
dc.subject.verbisspinningen
dc.titleStructure and properties of Vortex yarncs
dc.title.alternativeStructure and properties of Vortex yarnen
dc.typeThesis
local.departmentKTTcs
local.facultyFakulta textilnícs
local.identifier.stag18339
local.identifier.verbis439071
local.note.administratorsoprava_A
local.verbis.aktualizace2019-10-05 06:20:15cs
local.verbis.studijniprogramKTT Textilní inženýrství/Textile engineeringcs
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