3175

3000

كارشناسي ارشد

تكنولوژي نساجي

اصفهان : دانشگاه صنعتي اصفهان

1384

ده، 188، [I]ص.: مصور، جدول، شكل، نمودار

علي اكبر قره آغاجي، حسين توانايي

هاله خليلي

عبدالكريم حسيني، محمد قانع

1396/10/27

كتابنامه

نساجي

مهندسي نساجي

1398/03/04

ID3000

به فارسي و انگليسي: قابل رويت در نسخه ديجيتالي

Abstract Cotton yarns are widely used in manufacturing of various types of fabrics andapparels due to their special physical and aesthetic properties Cotton m lange yarns areproduced from blending of dyed and grey cotton fibers with different blending ratios byone of two methods blowing or drawing This type of yarns have specialty dyed effects similar to woolen vigore yarns that is not obtainable by yarn dyeing In This work aim atstudying on cotton fiber damage and its effects on cotton m lange yarns properties inproduction of rotor and ring m lange yarns with equal percentages 50 50 The cottonfibers were grade one sahel variety from gonbad which were used either in grey or dyedwith benzonerol VSF 600 direct dye For m lange yarn production grey cotton fiberswere pre opened and then dyed Dyed and grey cotton fibers were mixed either in blowingprocess or in drawing To assess the fiber damage effect on the dyed and grey cotton fibersassemblies in yarns 100 dyed and grey yarns were produced as well After yarnsproduction and random sampling length parameters of dyed and grey fibers such aseffective length short fiber content were measured Also elongation at break strength imperfections unevenness and hairiness of produced yarns were examined The resultsshow that dyeing and mechanical process lead to decrease of effective length increase ofshort fiber content Increasment of short dyed fibers in rotor and ring m lange yarn causethe drop in mechanical properties such as tenacity and elongation at break increasedimperfections and unevenness and hairiness in m lange yarn Also fiber damage in rotorm lange yarn is more than ring m lange yarn due to the further opening by opening roller These variations are indicative of damage in dyed cotton fibers on m lange yarnmanufacturing SEM micro graphs confirms that fiber damage occurance in dyed cottonfiber Evaluations of color blending uniformity of m lange yarns and fabrics show that thebest color uniformity is resulted in blowing method and rotor spinning system Also theleast color uniformity is resulted when fibers are blended by drawing on ring spinningsystem

علي اكبر قره آغاجي، حسين توانايي

هاله خليلي

عبدالكريم حسيني، محمد قانع