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Preparation method of ultraviolet-proof modified special-shaped nylon filament

An anti-ultraviolet and anti-ultraviolet technology, used in rayon manufacturing, filament/thread forming, melt spinning, etc., can solve the problems of single mode, affect the hand feeling, non-permanent fabric function, etc., to achieve uniform function and better mixing effect. good effect

Inactive Publication Date: 2019-09-20
SHUBO SHANGHAI NANO TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main technical problems to be solved by the present invention: (1) the mode of UV protection by using anti-ultraviolet fibers is single, and the sun protection index needs to be improved;

Method used

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  • Preparation method of ultraviolet-proof modified special-shaped nylon filament

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preparation example Construction

[0026] The invention provides a preparation method of anti-ultraviolet modified special-shaped nylon filament. The cross-section of the anti-ultraviolet modified special-shaped nylon filament is five-pointed star or triangle, and contains ultraviolet shielding powder. The ultraviolet shielding powder is made of titanium zinc metal oxide. One or more kinds are blended, and the mass fraction of the ultraviolet shielding powder in the anti-ultraviolet modified special-shaped nylon filament is 3% to 5%. The preparation method comprises the following steps:

[0027] step one

[0028] The polyamide slices are cryogenically treated, pulverized and sieved to obtain polyamide powder with a mesh size of 150-300. Preferably, the polyamide chips are polyamide 6 chips with a chip viscosity of 2.4-2.7 dL / g.

[0029] Polyamide, also known as nylon, has many excellent properties as a clothing fabric: abrasion resistance, breaking strength, elongation at break, elastic recovery rate, fatigue...

Embodiment 1

[0039] Step (1): The polyamide 6 slices with a slice viscosity of 2.7 dL / g are cryogenically treated, pulverized and sieved to obtain a polyamide powder of 300 mesh.

[0040] Step (2): Titanium dioxide with a particle size of 50 nm is mixed with the polyamide powder obtained in step (1) at a mass ratio of 50:50 at high speed. Then melt blending, extrusion and granulation are carried out through a twin-screw extruder to obtain a modified anti-ultraviolet polyamide masterbatch. The rotation speed of the mixer is 400 rpm, the mixing temperature is 90° C., and the mixing time is 0.5 h.

[0041] Step (3): The modified anti-ultraviolet polyamide masterbatch obtained in step (2) is precisely metered by an injection machine, and then enters the hopper and blends with polyamide 6 slices at a mass ratio of 10:90, followed by melting, extrusion, and profile spinning , oiling, winding and balancing to obtain anti-ultraviolet modified nylon pre-oriented yarn. The special-shaped spinning ...

Embodiment 2

[0049] Step (1): The polyamide 6 slices with a slice viscosity of 2.4 dL / g are cryogenically treated, pulverized and sieved to obtain a polyamide powder of 150 mesh.

[0050] Step (2): Zinc oxide with a particle size of 100 nm is mixed with the polyamide powder obtained in step (1) at a mass ratio of 30:70 at high speed. Then melt blending, extrusion and granulation are carried out through a twin-screw extruder to obtain a modified anti-ultraviolet polyamide masterbatch. The rotation speed of the mixer is 500 rpm, the mixing temperature is 80° C., and the mixing time is 1 h.

[0051] Step (3): The modified anti-ultraviolet polyamide masterbatch obtained in step (2) is precisely metered by an injection machine, and then enters the hopper and blends with polyamide 6 slices at a mass ratio of 15:85, followed by melting, extrusion, profiled spinning, Oiling, winding and balancing to obtain UV-resistant modified nylon pre-oriented yarn. The special-shaped spinning nozzle is "△", ...

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Abstract

The invention provides a preparation method of an ultraviolet-proof modified special-shaped nylon filament. The preparation method includes the steps of 1), subjecting a first polyamide chip to cryogenic treatment, crushing and screening to obtain polyamide powder 150-300 in mesh; 2), mixing ultraviolet-proof powder with the polyamide powder according to the mass ratio of 30:70-50:50, and then performing melt blending for extrusion granulation to obtain modified ultraviolet-proof polyamide masterbatch; 3), blending the modified ultraviolet-proof polymide masterbatch with a second polyamide chip according to the mass ratio of 10:90-15:85, and sequentially performing melting, extruding, profiled spinning, oil applying, winding and balancing to obtain a pre-oriented filament; 4), subjecting the pre-oriented filament to post processing to obtain the ultraviolet-proof modified special-shaped nylon filament. The filament is prepared by adopting a spinning nozzle shaped in 'triangle' or 'star', the special-shaped section shaped in 'triangle' or 'star' can scatter the ultraviolet ray of the sunlight effectively, and excellent ultraviolet-proof effect in combination with ultraviolet-proof powder is achieved.

Description

technical field [0001] The patent of the invention relates to a preparation method of filaments, in particular to a preparation method of anti-ultraviolet modified special-shaped nylon filaments, which belongs to the technical field of filaments. Background technique [0002] Sunlight mainly includes ultraviolet light (less than 380nm), visible light (380-760nm) and infrared light (760-2500nm), and its radiant heat accounts for 7%, 50% and 43% of the total solar radiation energy respectively. In hot summer, ultraviolet rays with shorter wavelengths can make the skin lose its luster, age and tan. If exposed to ultraviolet rays for a long time, it can even induce skin cancer. [0003] At present, the UV protection of textiles mainly depends on functional fibers or functional additives. [0004] The Chinese patent "A Production Method and Production Equipment for Ultraviolet-resistant Nylon Microfiber Filament" (publication number: CN109537085A) discloses a production method f...

Claims

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Application Information

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IPC IPC(8): D01F6/94D01F1/10D01D5/088D01D5/098
CPCD01D5/088D01D5/098D01F1/106D01F6/94
Inventor 盛宇严杰赵素花张雪陆海明
Owner SHUBO SHANGHAI NANO TECH CO LTD
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