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Moisture absorption polyamide 6 fibre and production method thereof

A production method, polyamide technology, applied in the direction of single-component polyamide rayon, fiber treatment, filament/thread forming, etc., can solve problems such as unevenness, difficulty in micropore size, and unstable spinning process

Active Publication Date: 2008-06-11
YIWU HUADING NYLON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the design process of the spinneret of polyamide 6 hygroscopic products, small changes in the size of the micropores can easily cause the draw ratio of the spinneret to be too large or too small during the spinning process, resulting in instability or filaments in the spinning process. The weakening of the grooves leads to a decrease in the product qualification rate and moisture absorption performance, so it is quite difficult to determine the optimal micropore size
At the same time, because the specific surface area of ​​hygroscopic polyamide 6 fibers is relatively large, and the spinning speed of polyamide 6 products is usually above 4000m / min, the friction of the fibers will be greatly increased during the spinning process, resulting in fiber breakage and uneven dyeing. , resulting in a decline in the qualified rate of the product

Method used

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  • Moisture absorption polyamide 6 fibre and production method thereof
  • Moisture absorption polyamide 6 fibre and production method thereof
  • Moisture absorption polyamide 6 fibre and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Preparation of Hygroscopic Polyamide 6DTY

[0028] (a) Preparation of polyamide 6POY

[0029] Product specifications POY 90dtex / 24f, polyamide 6 slices, adopt melt spinning machine, and adopt cross-shaped spinneret, its micropore size: length 0.6mm, width 0.08mm, aspect ratio 7.5:1, its specific production The process parameters are shown in Table 1

[0030] Table 1

[0031]

[0032] (b) Preparation of DTY

[0033] Texturize the POY produced by the above method, equipment: Italian RPR texturing machine, POY properties: breaking strength 3.67cN / dtex, breaking elongation 62%, evenness 0.81%. Its specific parameters are shown in Table 2

[0034] Table 2

[0035]

Embodiment 2

[0037] Preparation of Hygroscopic Polyamide 6HOY and FDY

[0038] Product specifications HOY 33dtex / 12f, FDY 44dtex / 12f, polyamide 6 slices as the basic raw material, melt spinning machine, and cross-shaped spinneret, the micropore size: length 0.56mm, width 0.07mm, length and width The ratio is 8:1. The specific production process parameters are shown in Table 3.

[0039] table 3

[0040]

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Abstract

The invention relates to moisture-absorption polyamide-6 fiber and the manufacturing method. The invention utilizes a special-shaped spinning plate to produce the polyamide-6 fiber with a cross type cross section, the fiber of the invention has good moisture-absorption function, simultaneously, the invention also overcomes the default of the prior art for producing polyamide-6 fiber, and provides a manufacturing technology of high product qualification ratio.

Description

technical field [0001] The invention relates to a hygroscopic polyamide 6 fiber and a preparation method thereof. Background technique [0002] The pursuit of wearing comfort is inevitable for human beings. On the basis of maintaining the excellent properties of polyamide 6, further endowing the fiber with excellent hygroscopic properties is the goal that polyamide 6 fiber manufacturers are striving to pursue. As one of the three major fibers in synthetic fibers, polyamide 6 fiber is widely used in textiles, clothing and other non-woven fields because of its excellent physical and chemical properties. In terms of developing moisture-absorbing fibers, Europe, the United States, and Japan started earlier and are more advanced, and have obtained many patents and product brands, but most of them are concentrated in polyester and polypropylene. At present, chemical fiber manufacturers in Taiwan have also successively developed polyester fibers with special-shaped cross-sections ...

Claims

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Application Information

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IPC IPC(8): D01F6/60D01D5/088
Inventor 宁佐龙缪国华
Owner YIWU HUADING NYLON
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