Top dyeing and post-processing method of flame retardant polyester fiber

Abstract

The invention relates to wool top dyeing of flame-retardant polyester fibers and a post-treatment method thereof. The method comprises the following steps: the flame-retardant polyester fiber wool top is placed in a wool top dyeing machine and operates for 3-5 min at the temperature of 40-50 min, glacial acetic acid is added and PH Value is adjusted to 5-6, monoammonium phosphate and Yuri Huading DIF are added for operating for 5-10min, disperse dye is added for operating for 5-10 min before the temperature rises, the temperature stops rising until 85 DEG C, then the temperature is maintained for 10-15 min, the temperature rises to 100-120 DEG C for operating for 30-60 min, liquor drainage and flushing are carried out with a bath ratio of 1:20-50; the dyed flame-retardant polyester fiber wool top is put into lotion soap with 2-5% of fiber fabric by weight, the lotion soap is processed for 20-30 min at the temperature of 80-90 DEG C, or, the dyed the flame-retardant polyester fiber wool top is first placed in bath consisting of 0.5-2g / L sodium hudroxide , 0.5-2g / L rongalite and 0.5-1g / L nonionic surface active agent for being processed for 20-30 min at the temperature of 70-80 DEG C and then placed in glacial acetic acid bath with 1-4% of fiber fabric by weight for being processed for 10-15 min at the temperature of 40-45 DEG C; the bath ratio is 1:20-1:50. The wool top dyeing of the invention features good levelling of dyeing and high color fastness of dyeing wool top.

Description

(1) Technical field [0001] The invention relates to a polyester fiber top dyeing and post-treatment method. It belongs to the technical field of textile printing and dyeing. (2) Background technology [0002] Polyester has excellent comprehensive performance and low price, so it is widely used in clothing fabrics, decorative fabrics and industrial textiles, but it has the disadvantage of being flammable. [0003] The limiting oxygen index of polyester is 20-22. After being ignited by a flame source, polyester will continue to burn, and during the burning process, the molten droplets produced by the melting and shrinking of the fibers can easily cause burns. Therefore, polyester has greater potential hazards, and it is necessary to perform flame-retardant treatment on polyester. [0004] Flame-retardant polyester is to use inorganic phosphate flame retardants to carry out copolymerization modification on polyester. In the manufacturing process of PET, compounds containing t...

AI Technical Summary

Problems solved by technology

Compared with ordinary polyester, due to the addition of comonomers and copolymerization with PET macromolecules, it acts as an inert diluent in the movement of PET macromolecular segments, affecting the movement of PET macromolecular segments, making flame-retardant polyester fibers The concentration of PET macromolecules in the medium decreases, and the regularity of the arrangement of PET macromolecules decreases, which makes the orientation and crystallinity of flame-retardant polyester lower than that of ordinary polyester. The penetration and diffusion inside the fiber is conducive to the combination of dyes and fibers, but because the dyes and fibers are combined too quickly, and the migration performance of disperse dyes is poor, it is easy to form color spots or uneven dyeing