Cationic dyeable antistatic polyester wool top and preparation method thereof

Abstract

The invention discloses a cationic dyeable antistatic polyester wool top and a preparation method thereof. The preparation method comprises the following steps of carrying out melt blending on conventional polyester and organic-inorganic synergistically modified functional polyester master batches through double screws, and conveying to a spinning position for melt spinning formation. The organic-inorganic synergistically modified functional polyester master batches are prepared by introducing a third copolymerization component, a fourth copolymerization component and an inorganic nucleating agent on the basis of esterification reaction of dibasic acid and dihydric alcohol and carrying out ester exchange reaction. Compared with conventional polyester, the organic-inorganic synergistically modified functional polyester master batches have higher fluidity and are easy to migrate to the fiber surface in the shearing process, and the prepared cationic dyeable antistatic polyester wool top has a 'skin-core 'structure. According to the cationic dyeable antistatic polyester wool top and the preparation method thereof provided by the invention, the organic-inorganic synergistically modified functional polyester master batches and the conventional polyester are blended and spun to prepare the polyester wool top, so that the process complexity is greatly reduced; and meanwhile, the cationic dyeable effect of the cationic dyeable antistatic polyester wool top can be flexibly adjusted according to the amount of the added master batches.

Description

technical field [0001] The invention belongs to the field of polyester preparation, and in particular relates to a cationic dyeable antistatic polyester wool top and a preparation method thereof. Background technique [0002] Polyester tops are mainly used in the wool spinning industry for blending with wool tops to produce woolen and other fabrics. At present, in wool spinning products, polyester wool tops are the most widely used chemical fiber species. However, conventional polyester wool tops produced by direct spinning have disadvantages such as difficult dyeing and poor hand feeling, which limit their application. Atmospheric pressure cationic dyeable high-shrinkage modified polyester top has good dyeability and bright color. It can shrink in boiling water similar to the performance of wool. It can be blended with natural or other chemical fibers in a high proportion. Shrinkage can be achieved through post-treatment, and the fabric has more wool. Feel, concave-convex ...

AI Technical Summary

Problems solved by technology

But from the point of view of practical application: 1) Modified components such as isophthalic acid-5-sulfonate are copolymerized, and the prepared copolyester is pre-crystallized and dried, and then spun into shape, but when downstream customers need to adjust the product In terms of performance, it must be optimized from aggregation, which is a long and inflexible process;

[0006] 2) In order to realize the cationic dyeability of recycled polyester tops, the polyester is alcoholysed first and then copolymerized with the sulfonate component. The whole process is extremely complicated. In the process of alcoholysis, a large amount of dihydric alcohol is required, which is prone to self-condensation to form by-products

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