High-moisture-conductivity polyester fiber and preparation method thereof

A polyester fiber, high moisture conductivity technology, applied in the fiber field, can solve problems such as unfavorable moisture export, and achieve the effects of excellent comprehensive performance, low cost and simple process

Inactive Publication Date: 2020-04-21
深圳市宏翔新材料发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the grooves of general special-shaped cross-section fibers are on the same side, which is not conducive to the export of moisture, and its moisture-conducting efficiency needs to be further improved.

Method used

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  • High-moisture-conductivity polyester fiber and preparation method thereof
  • High-moisture-conductivity polyester fiber and preparation method thereof
  • High-moisture-conductivity polyester fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A preparation method of high moisture permeability polyester fiber, according to the FDY process, the mass ratio is 50:50 PET melt (intrinsic viscosity is 0.55dL / g) and PTT melt (intrinsic viscosity is 1.1dL / g) distribution Finally, after extruding from the spinneret holes on the same spinneret to obtain FDY filaments, perform relaxation heat treatment to obtain high moisture permeability polyester fibers;

[0048] The spinneret holes on the spinneret are shaped spinneret hole, The shape is composed of a horizontal line and the oblique line I and oblique line II connected with it; the angle between oblique line I or oblique line II and the horizontal line is 50°; the ratio of the lengths of oblique line I, oblique line II to the horizontal line is 1 :1:2, the intersection point of oblique line I or oblique line II and the horizontal line is the midpoint of the horizontal line; oblique line I, oblique line II and the horizontal line have the same width; the ratio of t...

Embodiment 2

[0055] A preparation method of high moisture permeability polyester fiber, according to the FDY process, the PET melt (intrinsic viscosity is 0.57dL / g) and PTT melt (intrinsic viscosity is 1.18dL / g) with a mass ratio of 50:50 are distributed Finally, after extruding from the spinneret holes on the same spinneret to obtain FDY filaments, perform relaxation heat treatment to obtain high moisture permeability polyester fibers;

[0056] The spinneret hole is shaped spinneret hole, The shape is composed of a horizontal line and the oblique line I and oblique line II connected with it; the angle between oblique line I or oblique line II and the horizontal line is 57°; the ratio of the lengths of oblique line I, oblique line II to the horizontal line is 1 :1:2, the intersection of oblique line I or oblique line II and the horizontal line is the midpoint of the horizontal line; oblique line I, oblique line II and the horizontal line have the same width; the ratio of the length and ...

Embodiment 3

[0063] A preparation method of high moisture permeability polyester fiber, according to the FDY process, the PET melt (intrinsic viscosity is 0.57dL / g) and PTT melt (intrinsic viscosity is 1.14dL / g) with a mass ratio of 50:50 are distributed Finally, extrude FDY filaments from the spinneret holes on the same spinneret, and perform relaxation heat treatment to obtain high moisture permeability polyester fibers;

[0064] The spinneret hole is shaped spinneret hole, The shape is composed of a horizontal line and the oblique line I and oblique line II connected with it; the angle between oblique line I or oblique line II and the horizontal line is 57°; the ratio of the lengths of oblique line I, oblique line II to the horizontal line is 1 :1:2, the intersection of oblique line I or oblique line II and the horizontal line is the midpoint of the horizontal line; oblique line I, oblique line II and the horizontal line have the same width; the ratio of the length and width of obliq...

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Abstract

The invention relates to a high-moisture-conductivity polyester fiber and a preparation method thereof. After a PET melt and a PTT melt are distributed according to an FDY process, an FDY yarn is extruded from spinneret holes in the same spinneret plate, the FDY yarn is subjected to relaxation heat treatment to obtain the high-moisture-conductivity polyester fiber; the spinneret holes are of a shape, wherein the shape is as shown in the specification and is composed of a transverse line and a diagonal line I and a diagonal line II vertically connected with the transverse line; the included angle between the diagonal I and the transverse line is 50-60 degrees; the length ratio of the diagonal line I to the diagonal line II to the transverse line is 1 to 1 to 2, and the intersection point ofthe diagonal line I or the diagonal line II and the horizontal line is the midpoint of the horizontal line; the widths of the diagonal line I, the diagonal line II and the horizontal line are equal;the ratio of the length to the width of the transverse line is 2.5-3.5 to 1; the distribution refers to controlling the PET melt to flow through the transverse line, meanwhile, controlling the PET melt to flow through the diagonal line I and the diagonal line II; and the finally prepared high-moisture-conductivity polyester fiber has a distorted shape. According to the preparation method disclosedby the invention, a simple preparation method is adopted to prepare the polyester fiber which is beneficial to moisture export.

Description

technical field [0001] The invention belongs to the field of fiber technology, and relates to a polyester fiber with high moisture permeability and a preparation method thereof. Background technique [0002] At present, domestic chemical fibers mainly use polyester filaments as raw materials, and the cross-section of chemical fibers is round or similar to round. Due to the poor hygroscopicity of polyester itself, it feels stuffy, airtight, and lacks comfort when worn, so it is in urgent need of improvement. At present, the more commonly used method is to design it as a shaped fiber with moisture conductivity. [0003] Special-shaped fibers are generally prepared by specially designed and manufactured special-shaped spinnerets through special spinning processes, which is also the most commonly used method for producing special-shaped fibers at home and abroad. Producers can produce shaped fibers with any cross-sectional shape by improving and optimizing the processing techno...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/253D01D5/30D01D10/02D01D1/09D01D5/22D01F8/14
CPCD01D1/09D01D5/22D01D5/253D01D5/30D01D10/02D01F8/14
Inventor 王显峰
Owner 深圳市宏翔新材料发展有限公司
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