Dyeing and finishing process of a four-way stretch fabric based on antimony-free polyester

Abstract

The invention discloses a dyeing and finishing process of a four-way stretch fabric based on antimony-free polyester, which includes a pre-treatment process, a dyeing process and a post-treatment process in sequence; the pre-treatment process includes a tension-free pre-shrinking process and a presetting process; the dyeing The dyeing agents used in the process include dyeing auxiliaries and dyes; dyeing auxiliaries include dyeing optimizer TF‑256, dyeing synergist TF‑257 and spandex degreasing agent TF‑109A; post-treatment process includes sequential high-temperature drying process , soaping process and low-temperature setting process; the low-temperature setting process uses a moisture-absorbing and sweat-wicking finishing agent to carry out setting treatment on the soaped fabric; the soaping aids used in the soaping process include Yakesai RC and acidity slip agent VS . The invention can not only ensure that the processed fabric has better elasticity and resilience, but also make the color fastness and other technical indicators of the fabric meet higher requirements, and can also endow the fabric with better moisture absorption and perspiration function.

Description

technical field [0001] The invention belongs to the technical field of textile printing and dyeing, in particular to a dyeing and finishing process of a four-way stretch fabric based on antimony-free polyester. Background technique [0002] At present, most polyester production enterprises at home and abroad still mainly use antimony-based catalysts. Among the antimony-based catalysts, antimony trioxide, antimony acetate and antimony glycol are widely used, which have a high market share and excellent performance. In the polycondensation reaction of polyester, the antimony-based catalyst can greatly promote the polycondensation reaction instead of promoting the thermal degradation reaction, and is a good catalyst in the polycondensation process. However, antimony is a heavy metal that is harmful to the human body, and is associated with the toxic arsenic, which can cause damage to the liver. Since the production of polyester with antimony catalysts is a homogeneous catalyt...

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Problems solved by technology

[0007] (2) Spandex fiber has the characteristics of easy shrinkage when heated, and its shrinkage rate in the dyeing and finishing process is not easy to control;

[0008] (3) During dyeing, the selected dyes and dyeing auxiliaries have poor compatibility, which can easily lead to differences in hue; and spandex fibers tend to absorb a large amount of dyes when dyed, but the valence bond stress of dyes and spandex fibers is small, and in the subsequent consumption process Easy to fall off, resulting in poor color fastness

[0009] (4) When the fabric is functionally finished, the color fastness of the fabric is easily affected and decreased

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