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Photochromic fiber as well as preparation method and application thereof

A photochromic and fiber technology, applied in the field of optical fiber, can solve the problems of fragile surface structure, complex preparation process, poor fatigue resistance, etc., and achieve the effect of long service life, simple process and fast response time

Active Publication Date: 2014-02-05
厦门翔鹭化纤股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Existing photochromic fibers are made of liquid crystal spinning, grafting spirooxazine groups or spiropyran groups, adding fluorescent agents, using photochromic dyes and surface-adhered special microcapsules to achieve photochromic functions. The preparation process is complicated, the surface structure is easily damaged, the fatigue resistance is poor, and the service life is short. Therefore, there is an urgent need for a photochromic fiber that solves the above problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1: Preparation of Photochromic Fibers

[0025] (1) Preparation of the core layer material: first dry and crystallize the fiber grade polyethylene terephthalate as the core material, the drying temperature is 140°C, the crystallization temperature is 150°C, and the moisture content after drying is less than 30ppm;

[0026] (2) Preparation of cortical material: Accurately weigh 6-hydroxy-5,12-naphthoquinone and low-melting polyethylene terephthalate at a mass ratio of 1:99, and mix them thoroughly in a static mixing tank. Dry at 40°C;

[0027] (3) Spinning: Extrude and melt the obtained core layer material in the screw pump at the screw temperature: 280°C in the first zone, 280°C in the second zone, 295°C in the third zone, and 295°C in the fourth zone, and enter the composite spinning assembly. The cortex material is fed into a twin-screw extruder with a vacuum device and melted and extruded at the screw temperature: 190°C in the first zone, 200°C in the seco...

Embodiment 2

[0029] Example 2: Preparation of Photochromic Fibers

[0030] (1) Preparation of the core layer material: first dry and crystallize the fiber grade polyethylene terephthalate as the core material, the drying temperature is 160°C, the crystallization temperature is 160°C, and the moisture content after drying is less than 30ppm;

[0031] (2) Preparation of cortical material: Accurately weigh 3-methyl-6-hydroxy-5,12-naphthoquinone and low-melting polyethylene terephthalate at a mass ratio of 5:95, and mix them statically Mix well in the tank and dry at 40°C;

[0032] (3) Spinning: Extrude and melt the obtained core layer material in the screw pump at the screw temperature: 280°C in the first zone, 280°C in the second zone, 295°C in the third zone, and 295°C in the fourth zone, and enter the composite spinning assembly. The cortex material is fed into a twin-screw extruder with a vacuum device and melted and extruded at the screw temperature: 190°C in the first zone, 200°C in th...

Embodiment 3

[0034] Example 3: Preparation of Photochromic Fibers

[0035] (1) Preparation of the core layer material: first dry and crystallize the fiber grade polyethylene terephthalate as the core material, the drying temperature is 150°C, the crystallization temperature is 155°C, and the moisture content after drying is less than 30ppm;

[0036] (2) Preparation of cortical material: Accurately weigh 2-carboxy 6-hydroxy-5,12-naphthoquinone and low melting point polyethylene terephthalate at a mass ratio of 3:97, and place them in a static mixing tank Mix well and dry at 40°C;

[0037] (3) Spinning: Extrude and melt the obtained core layer material in the screw pump at the screw temperature: 280°C in the first zone, 280°C in the second zone, 295°C in the third zone, and 295°C in the fourth zone, and enter the composite spinning assembly. The cortex material is fed into a twin-screw extruder with a vacuum device and melted and extruded at the screw temperature: 190°C in the first zon...

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Abstract

The invention provides a photochromic fiber as well as a preparation method and an application thereof. The photochromic fiber is a double-component composite fiber with a skin-core structure, wherein in a cross section of the double-component composite fiber with the skin-core structure, a skin layer and a core layer are in a concentric structure; the skin layer of the double-component composite fiber with the skin-core structure is made of low-smelting-point polyethylene terephthalate added with a phenoxy naphtho-naphthoquinone additive; the core layer is made of fiber-grade polyethylene terephthalate. The invention further provides the preparation method of the photochromic fiber. The photochromic fiber has good photochromism, heat stability, fatigue durability, short responding time, simple process and long service life, can serve as an anti-counterfeiting identification element for safe anti-counterfeiting and can also be used for garment materials and advertisements to increase the aesthetic feeling.

Description

technical field [0001] The invention relates to the field of optical fibers, in particular to a photochromic fiber and its preparation method and application. Background technique [0002] With the development of science and technology and the improvement of people's living standards, people's demand for textiles has gradually changed from practicality to diversity and functionality. Consumer psychology, broad application prospects. [0003] Photochromic fiber is a new type of functional fiber. Its principle has two main aspects. One is that the fiber is spun with liquid crystal, and contains liquid crystal structure inside, which has different reflection effects on incident light and forms photochromic at different angles; It is a photochromic substance added inside or adhered to the surface of the fiber. Due to its unique visual effect, the photochromic fiber can be applied in the fields of security and anti-counterfeiting, clothing fabrics and advertisements. [0004] E...

Claims

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Application Information

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IPC IPC(8): D01F8/14D01F1/10D01D5/34
Inventor 陈茶娇刘龙敏刘志麟赵铁侠郑铮吴铁城
Owner 厦门翔鹭化纤股份有限公司
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