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Gear-shaped parallel composite elastic fiber and preparation method thereof

A composite elastic fiber and gear-shaped technology, applied in the fiber field, can solve the problems of increasing processing difficulty and increasing cost, and achieve the effect of improving shape retention performance, improving shape retention performance and reducing light transmission performance

Active Publication Date: 2019-01-15
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method works well, the addition of high refractive index powder particles increases the cost on the one hand, and increases the difficulty of processing on the other hand. In addition, there is room for further improvement in the anti-see-through performance of the fiber.

Method used

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  • Gear-shaped parallel composite elastic fiber and preparation method thereof
  • Gear-shaped parallel composite elastic fiber and preparation method thereof
  • Gear-shaped parallel composite elastic fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A preparation method of a gear-shaped side-by-side composite elastic fiber, PBT and PET are melt-spun through a composite spinning assembly to obtain a gear-shaped side-by-side composite elastic fiber, wherein the mass ratio of PBT and PET is 50:50. The pre-PBT chips are dried directly without pre-crystallization, the drying temperature is 130°C, and the drying time is 12h; PET is pre-crystallized at 120°C for 1h, and dried at 165°C for 12h. The process parameters of melt spinning: PET spinning temperature is one zone : 280℃, zone 2: 286℃, zone 3: 292℃, zone 4: 290℃; PBT spinning temperature is zone 1: 250℃, zone 2: 265℃, zone 3: 260℃, zone 4: 260℃ ; The spinning temperature fluctuation is ±1°C, the spinning pressure is 6MPa, the draft ratio is 3 times, and the spinning speed is 2780m / min.

[0044] Composite spinning components such as figure 1 As shown, there are two melt channels (A and B) and a co-extrusion channel C, PBT and PET enter the co-extrusion channel C thr...

Embodiment 2

[0048] A preparation method of a gear-shaped side-by-side composite elastic fiber. TPU and PTT are melt-spun through a composite spinning assembly to obtain a gear-shaped side-by-side composite elastic fiber, wherein the mass ratio of TPU and PTT is 40:60, and TPU and PTT are in Vacuum drying at 120°C for 12 hours before melt spinning, melt spinning process parameters: spinning temperature is 280°C, spinning temperature fluctuation is ±1°C, spinning pressure is 10MPa, draft ratio is 4 times, spinning The speed is 3000m / min.

[0049] Composite spinning assembly and spinneret orifice cross-section are identical with embodiment 1, and difference is that TPU and PTT enter co-extrusion flow channel C through melt channel A and B respectively and extrude from spinneret orifice;

[0050] The crimp shrinkage rate of the final gear-shaped side-by-side composite elastic fiber is 55%, and the elastic recovery rate is 88%; the wrinkle recovery angle of the fabric woven from the fiber is 3...

Embodiment 3

[0052] A preparation method of a gear-shaped side-by-side composite elastic fiber, TPE and polyamide are melt-spun through a composite spinning assembly to obtain a gear-shaped side-by-side composite elastic fiber, wherein the mass ratio of TPE and polyamide is 50:50, TPE and polyamide Polyamide is vacuum dried at 110°C for 7 hours before melt spinning. The process parameters of melt spinning are: spinning temperature is 250°C, spinning temperature fluctuation is ±1°C, spinning pressure is 15MPa, and draft ratio is 3 times , The spinning speed is 3500m / min.

[0053] The cross section of the composite spinning assembly and the spinneret orifice is the same as in Example 1, except that TPE and polyamide enter the co-extrusion flow channel C through the melt channels A and B respectively and then extrude from the spinneret orifice;

[0054] The crimp shrinkage rate of the finally prepared gear-shaped side-by-side composite elastic fiber is 52%, and the elastic recovery rate is 82...

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Abstract

The invention relates to a gear-shaped parallel composite elastic fiber and a preparation method thereof. The preparation method comprises the steps of carrying out melt spinning on a component A anda component B through a composite spinning assembly to obtain a gear-shaped parallel composite elastic fiber, wherein main materials of the component A and the component B are respectively an elastomer and a non-elastomer, the composite spinning assembly is internally provided with two melt flow channels and a co-extrusion flow channel, and the component A and the component B get into the co-extrusion flow channel respectively through the two melt flow channels and are then extruded from a spinneret orifice. The outer edge of the cross section of the spinneret orifice is composed of double C,wherein the endpoints of the double C are mutually connected, the double C or one of the double C are / is a non-smooth curve, and the shape is identical to the edge of an outer gear. The prepared fiberis composed of a part A and a part B, wherein the part A and / or the part B are / is added with an anti-ultraviolet material and / or functional particles. The gear-shaped parallel composite elastic fiberis good in shape-keeping performance, anti-perspective performance and anti-ultraviolet performance, and the preparation method is simple.

Description

technical field [0001] The invention belongs to the field of fibers and relates to a gear-shaped parallel composite elastic fiber and a preparation method thereof. Background technique [0002] Composite fiber is a kind of multi-component fiber, which refers to the presence of two or more polymer fibers that are not mixed in the same fiber section. It is a physically modified fiber developed in the 1960s. Bicomponent fibers that combine the properties of both polymers can be obtained using composite fiber manufacturing techniques. The composite fiber has three-dimensional crimp, high bulkiness and coverage, good conductivity, antistatic and flame retardancy. Composite fiber needs to be spun by a composite spinning machine with a special structure, and its application fields are very wide, mainly used in wool, blankets, wool fabrics, thermal fleece fillers, silk fabrics, non-woven fabrics, medical and sanitary products, and special work clothes, etc. , and with the emergenc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/24D01D5/32D01D5/08D01F1/10D01F8/06D01F8/08D01F8/10D01F8/12D01F8/14D01F8/16
CPCD01D5/08D01D5/24D01D5/32D01F1/10D01F8/06D01F8/08D01F8/10D01F8/12D01F8/14D01F8/16
Inventor 陈烨李明明王华平柯福佑吉鹏王朝生
Owner DONGHUA UNIV
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