Nylon wool top dyeing process capable of improving nylon spinning operation conditions

Abstract

The invention discloses a nylon wool top dyeing process capable of improving nylon spinning operation conditions. The nylon wool top dyeing process comprises the following steps: step one, wool top dyeing: loading nylon wool balls into a dye vat, adding a penetration enhancer, acetic acid and a leveling agent at room temperature, operating for 10 minutes, then adding a dye, and operating for 10 minutes, then raising the temperature to 98 DEG C at the speed of 0.5-1 DEG C / min, keeping the temperature for 30-60 minutes, reducing the temperature to 80 DEG C, and draining water; step two, soaping:adding a soaping agent at room temperature, operating for 10 minutes, raising the temperature to 60 DEG C, keeping the temperature for 30 minutes, and draining water; and step three, color fixing: adding a color fixing agent and acetic acid at room temperature, operating for 10 minutes, raising the temperature to 70 DEG C, keeping the temperature for 20 minutes, and draining water. The nylon fibers are subjected to color fixing treatment, so that various wet treatment fastnesses such as friction, water washing and sweat stain of the nylon fibers are improved; and meanwhile, through a reasonable high-temperature pickling process, the adhesion effect of the nylon fibers is improved, the operation condition during nylon blended spinning is improved, and the production efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of nylon dyeing, in particular to a nylon top dyeing process which can improve the running condition of nylon spinning. Background technique [0002] Nylon dyeing is generally dyed with acid or metal complex dyes. After dyeing, it needs to be fixed in order to achieve a certain color fastness. After dyeing, it is easy to stick to the rollers during the spinning process, and there is a lot of dust, which brings difficulties to the spinning process. [0003] The moisture regain of most chemical fibers is low, the dielectric constant is small, and the friction coefficient is high. During the spinning process, static electricity is generated due to constant friction, so antistatic agents and bulking agents (which have a certain affinity for fibers) must be used. ) to prevent or eliminate the accumulation of static electricity, and at the same time endow the fiber with softness, smoothness and other characteristi...

AI Technical Summary

Problems solved by technology

[0004] Nylon fibers are formed by polymerization of dicarboxylic acids and diamines. Because the fiber molecules contain free amino groups and carboxyl groups, they can be dyed with acid dyes, neutral dyes, and metal complex dyes. At this time, the dyes mainly It is combined with the fiber through intermolecular force, Coulomb force, hydrogen bond and other forces. There is no strong covalent bond between the dye and the fiber, so the fastness after dyeing is poor.

At the same time, due to the low moisture regain, static electricity is generated due to constant friction during the spinning process, causing nylon fibers to easily adhere to the top rollers, resulting in a large amount of dust, so the operating condition is poor and the production efficiency is low

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