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Photochromic fiber

A photochromic and photochromic technology, applied in the chemical characteristics of fibers, conjugated synthetic polymer rayon, textiles and papermaking, etc., can solve the problems of affecting light, judgment time, poor shading performance, etc., and improve thermal insulation. performance, the effect of ensuring the occlusion performance

Inactive Publication Date: 2019-02-15
RUGAO FUDA ENG & TECH RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although these fibers have the above-mentioned respective characteristics, there are certain application limitations in use. For example, in the textile field, the fabric is too thin, and its light-shielding performance is not good. If the fabric is too thick, because of its light-shielding performance. Affecting light, especially absorbing too much light, causing the fabric to heat up and affecting the use, if it is applied to the field of curtains, especially the morning and evening of the time cannot be judged through the curtains, and the shading performance is determined by the thickness and color of the curtain fabric. Realized, the use of such fabrics affects the overall layout of the interior and has a certain sense of depression, which is difficult to apply to families
[0004] Fibers applied to the field of environmental protection, because they cannot respond well to light, lead to low environmental performance

Method used

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Examples

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Effect test

preparation example Construction

[0030] The preparation method of polyethylene terephthalate modified photochromic agent comprises the following steps:

[0031] 1) Add terephthalic acid and ethylene glycol into the reactor, heat the reactor and stir it to carry out esterification reaction, generate esterification product, and cool to solid; the reaction temperature is 180-220°C; the reaction time is 1 -4 hours.

[0032] 2) Grinding the esterification product into powder to obtain the esterification product powder;

[0033] 3) After fully mixing the esterification product powder and the organic color-changing agent, a vacuum polycondensation reaction is carried out to prepare a polyethylene terephthalate-modified photochromic agent. When the vacuum polycondensation reaction is carried out, the vacuum is kept stable in this application, and the polycondensation conditions of low vacuum in the early stage and high vacuum in the late stage cannot be used in some existing technologies.

[0034] In this applicati...

Embodiment 1

[0037] A photochromic fiber comprising at least a photochromic fiber;

[0038] Photochromic fiber by weight, it consists of:

[0039]

[0040] The photochromic agent is an organic photochromic agent.

[0041] In the polyethylene terephthalate modified photochromic agent, the photochromic agent accounts for 0.1% of the total weight of the polyethylene terephthalate modified photochromic agent.

[0042] The organic photochromic agent comprises a composition of spiropyran and azobenzene, wherein the mass ratio of spiropyran and azobenzene is 1:1.

[0043] The auxiliary agent includes one or more combinations of oxidizing agent, compatibilizer, antiaging agent and light stabilizer.

[0044] The preparation method of polyethylene terephthalate modified photochromic agent comprises the following steps:

[0045] 1) Add terephthalic acid and ethylene glycol to the reactor, the reaction temperature is 180°C; the reaction time is 1 hour, the reactor is heated and stirred to carry ...

Embodiment 2

[0049] A photochromic fiber comprising at least a photochromic fiber;

[0050] Photochromic fiber by weight, it consists of:

[0051]

[0052] The photochromic agent is an organic photochromic agent.

[0053] In the polyethylene terephthalate modified photochromic agent, the photochromic agent accounts for 5% of the total weight of the polyethylene terephthalate modified photochromic agent.

[0054] The organic photochromic agent comprises a composition of spiropyran and azobenzene, wherein the mass ratio of spiropyran and azobenzene is 1:1.

[0055] The auxiliary agent includes one or more combinations of oxidizing agent, compatibilizer, antiaging agent and light stabilizer.

[0056] The preparation method of polyethylene terephthalate modified photochromic agent comprises the following steps:

[0057] 1) Add terephthalic acid and ethylene glycol to the reactor, the reaction temperature is 220°C; the reaction time is 4 hours, the reactor is heated and stirred, and the e...

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 relates to photochromic fiber. The photochromic fiber at least comprises photochromic fiber, wherein the photochromic fiber is prepared from components in parts by weight as follows: 75-100 parts of polyethylene terephthalate, 10-20 parts of polyurethane, 20-30 parts of a polyethylene terephthalate modified photochromic agent and 1-5 parts of an aid. According to the technical scheme, the organic photochromic agent is used, when visible light irradiates the fiber, the color of the fiber becomes light and the transmittance is improved, when visible light decreases, the color of the fiber becomes deep and the transmittance is reduced, and the thermal insulation performance of the fiber is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular refers to a photochromic fiber whose color changes correspondingly through the change of light. Background technique [0002] In the prior art, there are many types of fibers, and the uses of fibers are also very wide, including textile fields, optical fiber fields, environmental protection fields, and biological fields. [0003] Although these fibers have the above-mentioned respective characteristics, there are certain application limitations in use. For example, in the textile field, the fabric is too thin, and its light-shielding performance is not good. Affecting light, especially absorbing too much light, causing the fabric to heat up and affecting the use, if it is applied to the field of curtains, especially the morning and evening of the time cannot be judged through the curtains, and the shading performance is determined by the thickness and color of the curt...

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): D01F8/14D01F8/16D01F1/10
CPCD01F1/10D01F8/14D01F8/16
Inventor 王航王大平
Owner RUGAO FUDA ENG & TECH RES INST CO LTD
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