Preparation method of hollow multi-micropore polyester filament yarn

A polyester filament and production method technology, applied in the field of synthetic fibers, can solve the problems of inability to obtain micropores penetrating to the hollow, unsatisfactory fiber moisture conductivity, and decreased stability, and achieve easy implementation and promotion, moisture absorption and quick drying Excellent performance, good effect

Inactive Publication Date: 2007-02-07
SINOPEC OILFIELD SERVICE CORPORATION
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0004] Most of the fibers prepared by the above-mentioned methods either have a complicated processing process and a decrease in stability during the processing, or the fibers can only form micro-pits on the outer wall of the fibers after alkali reduction treatment, and cannot obtain micropores penetrating into the hollow, resulting in the moisture conductivity of the fibers. performance is still not ideal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Take 500Kg of conventional semi-dull polyester chip A with an intrinsic viscosity of 0.640, 62.5Kg of water-soluble polyester chip B with an intrinsic viscosity of 0.470, and 62.5Kg of water-soluble polyester chip C with an intrinsic viscosity of 0.770. -1 The shear viscosity at the shear rate is respectively: A-29.1Pa·s, B-22.5Pa·s, C-30.51Pa·s. After the three are mixed evenly, they are dried on the BT-600 vacuum drum drying equipment: first, the temperature is raised from room temperature to 110°C at a constant speed for 3 hours, and the temperature is dried at 110°C for 3 hours, and then the temperature is raised to 150°C at a constant speed for 2 hours, ℃ for 5 hours at a constant temperature, and then naturally cooled to 80 ℃ for later use. The water content in the dry slices after drying was measured to be 27 μg g -1 .

[0018] The above-mentioned dried mixed slices are spun at a high speed by using a hollow spinneret assembly on a civilian slicing spinning dev...

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Abstract

The invention relates to a method for producing polyester filament yarn with hollow porous structure and better wet adsorption function, wherein it uses two kinds of soluble polyester chips with high and low shearing viscosities to be high-speed spinned with normal polyester chip, to change the components of polyester chip, to be dried and processed via hollow ejection plate, POY-DT production line or FDY one-time production time to obtain the hollow polymer filament yarn. Via alkali reduction treatment, and watched under electric scanning fiber scope, the surface of fiber is uniformly distributed with micro concaves, the section has through micro holes, while its wet adsorption property is better than present one.

Description

technical field [0001] The invention relates to the production of modified polyester filaments, in particular to a method for producing polyester filaments with a hollow microporous structure and good moisture absorption and perspiration functions, and belongs to the technical field of synthetic fibers. Background technique [0002] With the continuous improvement of people's living conditions, the requirements for the comfort of clothing are getting higher and higher. As an important textile and clothing raw material, polyester fiber has many excellent properties, but due to its hydrophobic molecular structure, people wear polyester fiber. Fabric clothing has a clammy feeling to the body after sweating. Improving the moisture absorption and perspiration performance of polyester fiber is one of the important directions that many chemical fiber manufacturers are striving to pursue in recent years. According to the patent report, the research work in this area has roughly gon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/62D01D5/24
Inventor 严建华桂在斌史丽梅魏征
Owner SINOPEC OILFIELD SERVICE CORPORATION
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