Method for preparing efficient far infrared nylon fibers

A nylon fiber and far-infrared technology is applied in the field of preparation of high-efficiency far-infrared nylon fibers, which can solve the problems of large particle size of far-infrared additives, cumbersome processing, rough fiber surface, etc., and achieves improved immunity, low cost, and preparation technology. simple effect

Inactive Publication Date: 2012-11-14
DONGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there are mainly the following problems in the preparation of far-infrared fibers: the particle size of far-infrared additives is large and uneven, the post-processing of powder is cumbersome, the fiber spinnability is poor, and the fiber surface is rough and feels poor.
At present, adding MMO with small particle size and uniform distribution formed by LDHs calcined at high temperature to the fiber to prepare far-infrared nylon fiber has not been reported yet.

Method used

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  • Method for preparing efficient far infrared nylon fibers
  • Method for preparing efficient far infrared nylon fibers
  • Method for preparing efficient far infrared nylon fibers

Examples

Experimental program
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Effect test

Embodiment 1

[0036] Weigh 51g MgCl at room temperature 2 ·6H 2 O and 45g AlCl 3 ·6H 2 O, add both to 265 ml H 2 O to make a mixed solution, add dropwise to NaOH / Na 2 CO 3 solution (pH=14), crystallized at 90°C for 4h, filtered, washed and dried to obtain Mg-Al-CO3 LDHs. The prepared Mg-Al-CO 3 LDHs were calcined at 500°C for 4h to obtain MMO, and 10kg polyamide 6 slices were weighed and dried in a vacuum oven at 120°C for 12h. Add MMO to the dried polyamide 6 chips according to 2wt% of the polymer chips and mix evenly, blend and granulate in a twin-screw extruder to obtain far-infrared functional masterbatches. The final chips were dried by vacuum blowing at 120°C, and melt-spun on a twin-screw composite spinning machine to obtain far-infrared nylon fibers at a spinning temperature of 275°C and a spinning speed of 3500m / min.

[0037] figure 1 Mg-Al-CO prepared for this example 3 X-ray diffraction patterns of LDHs and magnesium-aluminum composite oxide MMO. It can be seen from...

Embodiment 2

[0039] Weigh 51g MgCl at room temperature 2 ·6H 2 O and 45g AlCl 3 ·6H 2 O, add both to 265ml H 2 O to make a mixed solution, add dropwise to NaOH / Na 2 CO 3 The solution (pH=12) was crystallized at 80°C for 6h, filtered, washed and dried to obtain Mg-Al-CO 3 LDHs. Mg-Al-CO prepared by co-precipitation 3 LDHs were calcined at 500 °C for 4 h to obtain MMO, and 8 kg polyamide 6 slices were weighed and dried in a vacuum oven at 120 °C for 24 h. Add MMO to the dried polyamide 6 chips according to 3wt% of the polymer chips and mix evenly, and blend and granulate in a twin-screw extruder to obtain far-infrared functional masterbatches. The final chips were dried by vacuum blowing at 120°C, and melt-spun on a twin-screw composite spinning machine to obtain far-infrared nylon fibers. The spinning temperature was 265°C and the spinning speed was 4000m / min.

[0040] figure 2 Mg-Al-CO prepared for this example 3 N of MMO obtained by LDHs calcined at high temperature 2 Adso...

Embodiment 3

[0042] Weigh 51g MgCl at room temperature 2 ·6H 2 O and 45g AlCl 3 ·6H 2 O, add both to 265ml H 2 O to make a mixed solution, add dropwise to NaOH / Na 2 CO 3 solution (pH=14), crystallized at 80°C for 6h, filtered, washed and dried to obtain Mg-Al-CO 3 LDHs. The prepared Mg-Al-CO 3 LDHs were calcined at 400 °C for 5 h to obtain MMO, and 10 kg polyamide 6 slices were weighed and dried in a vacuum oven at 110 °C for 36 h. Add MMO to the dried polyamide 6 chips according to 3wt% of the polymer chips and mix evenly, and blend and granulate in a twin-screw extruder to obtain far-infrared functional masterbatches. The final slices were vacuum-dried at 120° C. and melt spun to obtain far-infrared nylon fibers. The spinning temperature was 280° C. and the spinning speed was 3500 m / min.

[0043] image 3 It is a flow chart of the preparation process of the new high-efficiency far-infrared nylon fiber in this example, and the far-infrared nylon fiber is prepared by the full g...

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Abstract

The invention relates to a method for preparing efficient far infrared nylon fibers, comprising the steps of (1) preparing soluble magnesium salt and soluble aluminum salt into a mixed aqueous solution; adding the mixed aqueous solution drop by drop to a NaOH/Na2CO3 solution; and after crystallizing, leaching, washing and drying to obtain Mg-Al-CO3 LDHs; (2) calcinating the Mg-Al-CO3 LDHs at a high temperature to obtain MMO; (3) drying polyamide 6 chips, mixing the polyamide 6 chips with the MMO evenly, blending and granulating to obtain far infrared master-batch chips; and (4) drying the far infrared master-batch chips with forced draught in vacuum, and finally performing melt spinning to obtain the far infrared nylon fibers. The method for preparing the efficient far infrared nylon fibers is simple in preparation process and low in cost; and the prepared far infrared functional nylon fibers are of good mechanical property and excellent far infrared emission rate, can promote human blood circulation and improve immunity, and has good heat-preservation and health care effects.

Description

technical field [0001] The invention belongs to the field of preparation of functional nylon fibers, in particular to a preparation method of high-efficiency far-infrared nylon fibers. Background technique [0002] In today's society, people pay more and more attention to physical health, and functional textiles have also been given more attention. The production scale of differentiated and functionalized fibers is also increasing, mainly including flame retardant, antibacterial, antistatic, anti-ultraviolet, far-infrared fibers, etc. Far-infrared fibers with special functions of warmth and health care are used as a differential fiber. Known as the "fiber of life", far-infrared fiber products are also known as the most needed health products for human beings in the 21st century, and have broad practical value and application prospects. Japan, Russia, Germany, etc. began the research and development of this technology in the 1980s, especially Japan, which was the first to re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/90D01F1/10
Inventor 张青红毛新华宗源宋明陈欣顾莉琴李细林王宏志黄建华肖茹刘将培
Owner DONGHUA UNIV
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