Weight Reduction and Dyeing Characteristics of Sea-Island Type Ultramicrofiber PET Tricot Fabric Based on Black Dope Dyed Yarn with Disperse Dye for Charcoal Gray Color
Vol. 57, No. 5, pp. 296-305,
Oct. 2020
10.12772/TSE.2020.57.296
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Abstract
In this study, we investigated the effects of weight loss ratio and tensile strength
under various alkali hydrolysis conditions and NaOH concentrations (10−30% omf). We
obtained the optimal weight loss ratio of 24.26% under the alkali hydrolysis conditions of
25% omf NaOH at 110 °C for 60 min. To obtain the optimal dyeing condition for a gray
color in reduced sea-island polyethylene terephthalate ultramicrofiber tricot fabric, we conducted
the dyeing process under the following conditions; dyeing temperature (95−
135 °C), dyeing time (20−60 min), blue dye content (0.1−0.5% omf), and UV-absorbent content
(1−9% omf). The optimal dyeing conditions of the alkali-reduced fabric were 1 g/l dispersant,
1 g/l pH buffer solution, and 3% omf UV-absorbent at 135 °C for 40 min and a
goods-to-liquor ratio of 1:10. Under these conditions, the dyed fabrics showed excellent
color fastness against washing, rubbing, and light with grades of 4−5.
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