Preparation method of anti-infrared cool modified nylon filament adopting skin-core structure

A skin-core structure, infrared technology, used in rayon manufacturing, filament/thread forming, conjugated synthetic polymer rayon, etc., can solve the problem that the effect of anti-infrared function finishing is not long enough, the wearing is not cool enough, and the infrared ray is ignored. protection and other issues, to achieve the effect of good anti-infrared heat insulation performance and excellent thermal conductivity

Inactive Publication Date: 2019-10-15
SHUBO SHANGHAI NANO TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Most of the existing sun protection technology is aimed at the protection of ultraviolet rays, ignoring the protection of infrared rays; the anti-infrared technology is not yet mature, and only a small amount is used for anti-infrared detection by the military; the effect of anti-infrared function finishing is not long enough, and it is not cool enough to wear

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  • Preparation method of anti-infrared cool modified nylon filament adopting skin-core structure
  • Preparation method of anti-infrared cool modified nylon filament adopting skin-core structure

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preparation example Construction

[0026] The invention provides a preparation method of anti-infrared cool modified nylon filament with a skin-core structure, which adopts concentric sheath-core spinning assembly for spinning, and its core layer contains infrared reflective powder, and the infrared reflective powder is made of nano-silica One or more blends of powder, nano-carbon powder, tungsten-vanadium-tin-antimony oxide powder account for 3% to 5% of the core layer; the skin layer contains heat-conducting powder, and the heat-conducting powder is made of nano-jade One or more kinds of powder, nano aluminum nitride and mica nano powder are blended, accounting for 2% to 3% of the cortex mass. The preparation method comprises the following steps:

[0027] step one

[0028] The high-viscosity polyamide chips are cryogenically treated, crushed and sieved to obtain polyamide powders with a mesh size of 150-300. Preferably, the high-viscosity polyamide chips are polyamide 6 chips, with a chip viscosity of 2.8-3...

Embodiment 1

[0049] Step (1): The high-viscosity polyamide 6 slices are cryogenically treated, crushed and sieved to obtain 150-mesh polyamide powder. Polyamide 6 has a slice viscosity of 3.0dL / g and a melting point of 225°C.

[0050] Step (2): Silica with a particle size of 50nm is mixed with the polyamide powder obtained in step (1) at a high speed in a mass ratio of 10:90, and then melted, blended, extruded and granulated by a twin-screw extruder, A modified anti-infrared polyamide masterbatch is prepared. The rotation speed of the mixer is 400 rpm, the mixing temperature is 90° C., and the mixing time is 0.5 h.

[0051] Step (3): subjecting polyamide slices with medium viscosity and low melting point to cryogenic treatment, crushing and sieving to obtain polyamide powder with a mesh size of 150. The polyamide chips are polyamide 6 chips with a chip viscosity of 2.4dL / g and a melting point of 215°C.

[0052] Step (4): Add aluminum nitride with a particle size of 5nm and mix the polya...

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Abstract

The invention discloses a preparation method of anti-infrared cool modified nylon filament adopting a skin-core structure. The preparation method comprises the steps as follows: (1) fully mixing firstpolyamide powder and anti-infrared powder, and performing melt blending, extrusion and granulation to prepare modified anti-infrared polyamide master batch; (2) fully mixing second polyamide powder and heat-conducting powder, and performing melt blending, extrusion and granulation to prepare modified heat-conducting polyamide master batch; (3) melting the modified anti-infrared polyamide master batch to form a first polyamide melt, and conveying the first polyamide melt into a skin-core type composite assembly of a spinning device to serve as a core layer component; (4) melting the modified heat-conducting polyamide master batch to form a second polyamide melt, and conveying the second polyamide melt into the skin-core type composite assembly of the spinning device to serve as a skin layer component; (5) extruding the core layer component and the skin layer component by the skin-core type composite spinning assembly to form spun filament, and performing aftertreatment to obtain the anti-infrared cool modified nylon filament adopting the skin-core structure.

Description

technical field [0001] The patent of the invention relates to the field of polyamide preparation, in particular to a method for preparing a skin-core structure anti-infrared cool modified nylon filament. 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 the hot summer, a large amount of infrared rays in sunlight can easily penetrate atmospheric smog, dust and light fabrics, etc., causing skin temperature to rise, capillaries to dilate, congest, and increase epidermal water evaporation, etc., directly causing adverse effects on the skin, such as red papules , premature skin aging and pigmentation disorders. 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. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/12D01F1/10D01D5/34
CPCD01D5/34D01F1/106D01F8/12
Inventor 盛宇严杰赵素花张雪陆海明
Owner SHUBO SHANGHAI NANO TECH CO LTD
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