Porous moisture-permeable warm-keeping antistatic polyester fiber and preparation method thereof

Abstract

The invention relates to a porous moisture-permeable warm-keeping antistatic polyester fiber and a preparation method thereof. The porous moisture-permeable warm-keeping antistatic polyester fiber is prepared from antistatic modified polyester, and a process flow of the preparation method comprises a spinning DIO assembly filtering process and a cooling process; a spinning DIO assembly is a double-channel device; the cooling process comprises the following steps: extruding antistatic modified polyester melt from spinneret orifices in a spinneret plate, passing through a slow cooling area, firstly entering a filter element in a circular blowing box to be subjected to circular blowing cooling, and then carrying out side blowing cooling; a filter element in the through blowing box is formed by sequentially sleeving an outer cylinder, a secondary outer cylinder, a secondary inner cylinder and an inner cylinder; the upper end and the lower end between the outer cylinder and the inner cylinder are sealed through high-temperature-resistant silica gel pads with caps, and the outer cylinder and the secondary outer cylinder are fixed through a plurality of stainless steel supporting strips; two perforated plates which are parallel to each other and perpendicular to the surface of the spinneret plate are arranged in the filter element in the circular blowing box, and the two perforated plates are used for separating tows extruded from two areas on the spinneret plate; and finally, the prepared fiber is relatively high in hollowness and relatively good in yarn evenness.

Description

technical field [0001] The invention belongs to the technical field of functional polyester fibers, and in particular relates to a porous, moisture-permeable, warm-keeping and antistatic polyester fiber and a preparation method thereof. Background technique [0002] As the largest variety of chemical fiber, polyester fiber has many excellent properties, such as high strength, good elasticity, weak acid and alkali resistance, wear-in resistance and fatigue resistance, etc. It is widely used in clothing, home textile decoration and other industrial fields. In recent years, with the sustained and rapid growth of China's economy and the continuous improvement of people's consumption levels, the demand for differentiation and functionality of polyester fibers has also increased. The differentiated fibers of polyester are mainly expressed in various forms, properties and functions. come out. At present, the most widely used products in the market are ultra-fine denier, moisture-a...

AI Technical Summary

Problems solved by technology

The porous, moisture-permeable, warm-keeping and anti-static polyester fiber is designed with multiple special-shaped spinneret holes, which requires relatively high requirements for filament cooling and oiling devices. During cooling, the process air interferes with each other, which can easily cause uneven cooling of the filaments, and the filter element is easily deformed; Figure 7-8 As shown, in the oiling device of the prior art, the oiling of the oil nozzle and the guidance of the guide wire hook 11 are carried out separately, which not only increases the number of times of friction between the wire strip and the porcelain guide wire, but also has a large part of the oiling of the tow in the oil nozzle. If the monofilament is not in direct contact with the oil agent (contact point 10), there are many overlapping parts of the tow, and the static electricity is not completely eliminated, which will still increase the jitter of the tow, resulting in uneven oiling, poor evenness, and affecting the hollowness. The impact of production and post-processing is huge, product quality declines, the prepared fiber has poor moisture permeability and heat preservation performance, and it is difficult to maintain antistatic, etc., which brings many adverse effects to the clothing materials woven in the subsequent process.

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