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Photochromic fiber making method

A photochromic and manufacturing method technology, applied in the field of textile fiber manufacturing, can solve the problems of cold shedding, inability to large-scale production, difficult process control, etc., and achieve the effects of strong hygroscopicity and excellent dispersion uniformity

Inactive Publication Date: 2014-09-17
YIXING ZHENGTAI CHEM FIBER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, due to the unreasonable manufacturing methods used, the photochromic fibers produced cannot fully meet the actual needs, which affects the development, utilization and popularization of luminous fibers.
For example, Chinese patent ZL200580011656 John et al. used electrospinning to prepare photochromic fibers. This method can only prepare ultra-fine short fibers, and the output is very low, so it cannot be mass-produced at present.
There are also people who adopt the method of fabric coating to prepare photochromic fabrics, but the coating fastness of this kind of fabrics is poor, the cold falls off, and the hand feels hard, which affects the use.
There are also people who use the method of dyeing fibers to prepare photochromic fibers, but the photochromic agent is easy to hydrolyze, the process is difficult to control, the product quality is unstable, and the process is complicated, resulting in waste water pollution

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Slice drying for photochromic fiber spinning:

[0033] Bake the low-melting-point high-gloss nylon slices at 45°C for 5 hours, and then at 60°C for 13 hours. Ensure that the vacuum degree is below 0.1mmHg before heating. When the water content of the hot sample is below 200ppm, the temperature starts to drop. When the temperature drops to room temperature (20°C), the vacuum is removed and the material is quickly discharged. The dried material should be stored in a sealed container to be granulated and spun.

[0034] (2) Preparation of masterbatch for photochromic fiber spinning:

[0035] Add the photochromic agent to the dried nylon chips obtained in step (1) in a ratio of 10%, then add 0.1% dispersant, 0.03% coupling agent, 0.06% heat stabilizer, 0.01% antioxidant, and then Melt at a certain temperature, inject tape, and pelletize to make masterbatch. Then, the master batch is dried through step (1) drying process to obtain the master batch for spinning photochr...

Embodiment 2

[0041] (1) Slice drying for photochromic fiber spinning:

[0042]Bake the low-melting-point bright nylon slices at 45°C for 6 hours, and then at 60°C for 12 hours. Ensure that the vacuum degree is below 0.1mmHg before heating. When the water content of the hot sample is below 200ppm, the temperature starts to drop. When the temperature drops to room temperature (25°C), the vacuum is removed and the material is quickly discharged. The dried material should be stored in a sealed container for granulation and spinning.

[0043] (2) Preparation of masterbatch for photochromic fiber spinning:

[0044] Add the photochromic agent to the dried nylon chips obtained in step (1) in a ratio of 15%, then add 0.2% dispersant, 0.04% coupling agent, 0.08% heat stabilizer, 0.02% antioxidant, and then Melt at a certain temperature, inject tape, and pelletize to make masterbatch. Then, the master batch is dried through step (1) drying process to obtain the master batch for spinning photochrom...

Embodiment 3

[0050] (1) Slice drying for photochromic fiber spinning:

[0051] Bake the low-melting-point bright nylon slices at 45°C for 7 hours, and then at 60°C for 11 hours. Ensure that the vacuum degree is below 0.1mmHg before heating. When the water content of the hot sample is below 200ppm, the temperature starts to drop. When the temperature drops to room temperature (30°C), the vacuum is removed and the material is quickly discharged. The dried material should be stored in a sealed container to be granulated and spun.

[0052] (2) Preparation of masterbatch for photochromic fiber spinning:

[0053] Add the photochromic agent to the dried nylon chips obtained in step (1) in a ratio of 20%, then add 0.3% of dispersant, 0.06% of coupling agent, 0.1% of heat stabilizer, and 0.03% of antioxidant. Melt at a certain temperature, inject tape, and pelletize to make masterbatch. Then, the master batch is dried through step (1) drying process to obtain the master batch for spinning photoc...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention discloses a photochromic fiber making method which is realized by the following steps: (1) under vacuum conditions, drying light nylon slices with a low melting point, cooling to the room temperature, and excluding vacuum to discharge; (2) taking a certain quality of the dried nylon slices obtained by the step (1), adding a photochromic agent, a dispersing agent, a coupling agent, a heat stabilizer and an antioxidant, melting at 165 to 180 DEG C to prepare masterbatch; (3) taking the following raw materials by mass to mix: 70-90% of the nylon slices obtained by the step (1) and 10-20% of the masterbatch obtained by the step (2), and preparing photochromic POY (pre-oriented yarn) by melt spinning; and (4) drawing the photochromic POY to obtain the photochromic FDY (fully drawn yarn). The photochromic fiber is good in color changing effect, good in comprehensive application performance and low in production cost.

Description

technical field [0001] The invention relates to a method for manufacturing photochromic fibers and belongs to the technical field of textile fiber manufacturing. Background technique [0002] Photochromic fibers are a new class of functional fibers that undergo reversible changes in color upon exposure to different wavelengths of light. This fiber has the advantages of high application value, non-toxic and harmless, and long service life. It can be widely used in various fields such as national defense, military affairs, and national economy, such as anti-counterfeiting trademarks, banknotes, ID cards, color-changing windows, optical sensors, and optical switches. , information storage, camouflage clothing (camouflage clothing), military tents and weapon camouflage coverings. Fabrics made from this fiber exhibit a similar color to the surrounding environment during the day and become darker at night, thereby achieving better camouflage. [0003] In the prior art, due to th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/90D01F1/10C08J3/22D01D1/04D01D5/08D01D5/12
Inventor 翁俊强李永贵陈余忠贺永林
Owner YIXING ZHENGTAI CHEM FIBER
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