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 protec

Method used

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

Examples

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Comparison scheme
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Example Embodiment

[0026] The invention provides a method for preparing ultraviolet-resistant modified special-shaped nylon filaments. The cross-section of the ultraviolet-resistant modified special-shaped nylon filaments is a five-pointed star or triangle, and contains ultraviolet shielding powder. The ultraviolet shielding powder is made of titanium zinc metal oxide. One or more blends, 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 includes the following steps:

[0027] step one

[0028] The polyamide chips are subjected to cryogenic treatment, crushing and sieving to obtain 150-300 mesh polyamide powder. Preferably, the polyamide chips are polyamide 6 chips with a chip viscosity of 2.4-2.7 dL / g.

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

Example Embodiment

[0038] Example 1

[0039] Step (1): The polyamide 6 chips with a chip viscosity of 2.7 dL / g are subjected to cryogenic treatment, crushing and sieving to obtain 300 mesh polyamide powder.

[0040] Step (2): Titanium dioxide with a particle size of 50 nm is mixed with the polyamide powder obtained in step (1) at a high speed at a mass ratio of 50:50. Then, a twin-screw extruder is used for melt blending, extruding, and pelletizing to prepare a modified UV-resistant polyamide masterbatch. The 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 UV-resistant polyamide masterbatch obtained in step (2) is accurately metered through an injection machine and then entered into a hopper and blended with polyamide 6 chips at a mass ratio of 10:90, followed by melting, extrusion, and profile spinning , Oiling, winding and balancing to obtain UV-resistant modified nylon pre-oriented yarn. The profiled spinning nozzle is "...

Example Embodiment

[0048] Example 2

[0049] Step (1): The polyamide 6 chips with a chip viscosity of 2.4 dL / g are subjected to cryogenic treatment, crushed and sieved to obtain polyamide powder of 150 mesh.

[0050] Step (2): Zinc oxide with a particle size of 100 nm and the polyamide powder obtained in step (1) are mixed at a high speed at a mass ratio of 30:70. Then, a twin-screw extruder is used for melt blending, extruding, and pelletizing to prepare a modified UV-resistant polyamide masterbatch. The 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 the injection machine and then enters the hopper and blends with polyamide 6 slices at a mass ratio of 15:85, followed by melting, extrusion, profile spinning, Oiling, winding, and balancing to obtain UV-resistant modified nylon pre-oriented yarn. The profiled spinning nozzle is "△", the melt sp...

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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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