A Study of Disperse Dye Dyeable Polypropylene Fabric Development and Process Parameter Optimization

• Main Authors: Fang-Sian Lin, 林芳賢
• Other Authors: Chung-Feng Jeffrey Kuo
• Format: Others
• Language: zh-TW
• Published: 2015
• Online Access: http://ndltd.ncl.edu.tw/handle/61622553007885497346

碩士 === 國立臺灣科技大學 === 材料科學與工程系 === 103 === This study develops disperse dye dyeable polypropylene fabric, as the polypropylene has high degree of crystallinity, lacking unsaturated bond and reactive group, it cannot dye, its application is limited. The traditional polypropylene is mixed with masterbatch for dyeing, but there is color correction problem. Therefore, this study modifies the dyeability of polypropylene, and it is made into fabric for validation. Part 1 of this study optimizes the development of dyeable ester pellet. First, the polypropylene and the developed low melting copol-yester are made into composite ester pellet by dual-screw mixing pro-cess, so that the disperse dye can dye through the copolyester chain segment, the polypropylene grafting maleic anhydride compatilizer is added, the thermal properties and rheological properties of the modi-fied ester pellet are discussed, and the Fourier infrared spectrograph is used for functional group validation. The Grey Relational Analysis (GRA) is combined with Fuzzy C Means Clustering Algorithm (FCM) to optimize the process parameter design for quality characteristics of Color Strength (CS) and Melting Flow Index (MFI). MFI: unmodified polyacrylic polymer is 35.78 g/10min, optimized polymer is 37.63 g/10min; CS: unmodified polyacrylic polymer is 100 K/S, optimized polymer is 211.20 K/S, meaning the developed polymer has good circulating processing characteristic and exhaustion. Part 2 optimizes the development of dyeable fiber, the modified ester pellet is made into fiber by melt spinning, the FCM is combined with Stem Cells Algorithm (SCA) to design process parameters for the quality characteristics of Tensile Strength (TS) and Percent Elongation (PE). TS: unmodified polyacrylic polymer is 3.36 g/d, optimized polymer is 3.66 g/d; PE: unmodified polyacrylic polymer is 36.66 %, optimized polymer is 38.65 %, meaning the mechanical properties of the developed fiber are not influenced by modification, and conform to the standards of textile industry. Part 3 makes the optimized fiber into fabric for dye test, the val-idation of wash fastness shows the wash fastness is Level 3-4, meaning the developed polypropylene fabric has good exhaustion and color fastness.