Preparation method of superfine imitated mink hair polyamide fiber dyed yarn for knitting

Abstract

The invention discloses a preparation method of a superfine imitated mink hair polyamide fiber dyed yarn for knitting. The preparation method comprises the following steps of carrying out melt spinning on master batch containing raw vermiculite powder and nylon 66 slices, then carrying out secondary stretching, and next, carrying out relaxation heat setting. After the tow is cut into short fibers,the short fibers are condensed and twisted to be output into yarns by using the high-speed rotation of an airflow spinning machine to obtain the superfine polyamide fiber yarns. Then an acid dye is adopted for dyeing, and the yarns are soaked in a softening treatment liquid and then are dried to obtain the superfine imitated mink hair polyamide fiber dyed yarn. According to the preparation method, very small grooves can be formed in the surfaces of the nylon slice, and meanwhile, due to the fact that the particle size of the raw vermiculite powder reaches the micro-nano level, the pores in the superfine polyamide fibers are very small, so that the influence on the strength of the superfine polyamide fibers is not greatly influenced, and the subsequent textile performance is reduced; a block silicone oil softening agent is adopted, so that the surface grooves can be well repaired, soft and smooth hand feeling can be achieved after surface modification of the polyamide fiber dyed yarn,and a plump fluffy appearance is realized, thereby enabling the yarn to be closer to the feel of the imitated mink hair and increasing the economic value.

Description

technical field [0001] The invention relates to the technical field of textiles, in particular to a method for preparing ultrafine mink-like wool-like nylon dyed yarn for knitting. Background technique [0002] Polyamide is commonly known as nylon (Nylon), the English name Polyamide (referred to as PA), is the general term for thermoplastic resins containing repeated amide groups -[NHCO]- on the main chain of the molecule, including aliphatic PA, aliphatic-aromatic PA and aromatic pa. Among them, aliphatic PA has many varieties, large output and wide application, and its naming depends on the specific number of carbon atoms in the synthetic monomer. Invented by the famous American chemist Carothers and his research team. [0003] Nylon is a term for polyamide fiber (nylon), which can be made into long or short fibers. Polyamide is mainly used for synthetic fibers. Its most prominent advantage is that its wear resistance is higher than that of all other fibers. The strengt...

AI Technical Summary

Problems solved by technology

Due to the different fineness of the above two fibers, the composite fiber made by simple twisting will bring certain difficulties to the post-processing, such as the problem of uniform dyeing. In the production of composite ultrafine fibers, the addition of functional materials will change the drawing properties of these fiber materials, which will bring certain difficulties to the realization of coating