CN111959054B - Fabric capable of changing color under sunlight - Google Patents

Fabric capable of changing color under sunlight Download PDF

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Publication number
CN111959054B
CN111959054B CN202010886470.8A CN202010886470A CN111959054B CN 111959054 B CN111959054 B CN 111959054B CN 202010886470 A CN202010886470 A CN 202010886470A CN 111959054 B CN111959054 B CN 111959054B
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Prior art keywords
photochromic
layer
fabric
color
light reflecting
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CN202010886470.8A
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CN111959054A (en
Inventor
陈秀娜
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Dmodes Fashion Garment Co ltd
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Dmodes Fashion Garment Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B32B27/365—Layered products comprising a layer of synthetic resin comprising polyesters comprising polycarbonates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
    • B32B3/08—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
    • B32B3/085—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts spaced apart pieces on the surface of a layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/08—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer the fibres or filaments of a layer being of different substances, e.g. conjugate fibres, mixture of different fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/106—Carbon fibres, e.g. graphite fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/402—Coloured
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/416—Reflective
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/724—Permeability to gases, adsorption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2437/00—Clothing

Landscapes

  • Woven Fabrics (AREA)
  • Curtains And Furnishings For Windows Or Doors (AREA)

Abstract

The invention relates to the technical field of garment materials, in particular to a photochromic textile, which comprises a fabric base layer and a photochromic material layer, wherein the photochromic material layer comprises a light transmitting layer, light reflecting columns are arranged in the light transmitting layer, cavities are arranged in the light reflecting columns, a plurality of through holes are also formed in the light reflecting columns, the through holes are communicated with the corresponding cavities, a plurality of inorganic photochromic film layers are also arranged on the surface of each light reflecting column, photochromic microcapsules are arranged in the cavities, organic photochromic agents are filled in the photochromic microcapsules, antioxidants are added in the organic photochromic agents, the organic photochromic agents are combined by adopting inorganic and organic photochromic, the organic photochromic agents are not directly exposed to the sun, the photochromic service life of the photochromic fabric is prolonged, the photochromic experience is improved by the arrangement of the light reflecting layer, and the visual effect is better.

Description

Fabric capable of changing color under sunlight
The patent application is divisional application, the application number of a parent application is 2019103991583, and the application date of the parent application is 5 months and 14 days in 2019.
Technical Field
The invention relates to the technical field of garment materials, in particular to a color-changing fabric under sunlight.
Background
Along with the development of science and technology and the improvement of people's standard of living, people change the demand of fabrics into diversity and functionality by the practicality gradually, and the product that discolours can satisfy people to fabrics functional and diversified demand.
Photochromic fabric is added in the fabric or has photochromic substances adhered on the surface of the fabric, the photochromic substances absorb visible light and ultraviolet light under the irradiation of sunlight to change the color, and the color of the photochromic substances can be reversibly changed to the original color after the light disappears.
Disclosure of Invention
The invention provides a sunlight photochromic fabric, and aims to solve the problems of poor stability and short service life of the existing photochromic fabric caused by long-term direct exposure to sunlight.
In order to achieve the purpose, the invention is realized by the following technical scheme: the fabric comprises a fabric base layer and a color-changing material layer, wherein the color-changing material layer comprises a light transmitting layer, light reflecting columns are arranged in the light transmitting layer, cavities are arranged in the light reflecting columns, a plurality of through holes are further formed in the light reflecting columns, the through holes are communicated with the corresponding cavities, a plurality of inorganic photochromic film layers are further arranged on the surfaces of the light reflecting columns, photochromic microcapsules are arranged in the cavities, organic photochromic agents are filled in the photochromic microcapsules, and antioxidants are added into the organic photochromic agents.
Furthermore, the capsule wall of each photochromic microcapsule is also provided with a heat absorber, and the heat absorber comprises a heat absorbing layer and a heat absorbing agent.
Still further, the heat sink layer is made of a nanofiber material.
Furthermore, a plurality of fixed blocks are arranged on the surface of the reflecting column, each fixed block is inserted into the light-transmitting layer, and a plurality of bulges are arranged on the surface of each fixed block.
Furthermore, each of the reflective columns is a cylindrical structure, and adjacent reflective columns are perpendicular to each other.
Furthermore, the light-transmitting layer is also provided with a fabric bottom layer, and the fabric bottom layer is made of nanofiber materials.
Furthermore, the inorganic photochromic film layer is nano titanium dioxide fiber, and the organic photochromic agent is one or a composition of more than two of spiropyran, diarylethene or azobenzene.
Furthermore, the antioxidant is one or a composition of more than two of tert-butyl hydroxy anisole, dibutyl hydroxy toluene and tert-butyl hydroquinone.
Furthermore, the surface of the light-transmitting layer is provided with air-permeable micropores.
Furthermore, the color-changing fabric is formed by mixing and weaving the fabric base layer and the color-changing material layer, the color-changing material layer is warp yarns, the fabric base layer is weft yarns, and the fabric base layer is formed by blending bamboo charcoal fibers and flame retardant fibers.
The invention provides a sunlight photochromic fabric, which has the following beneficial effects compared with the existing photochromic fabric:
(1) through setting up the euphotic layer set up reflection of light post, cavity, through-hole in the euphotic layer, and the surface of reflection of light post sets up inorganic photochromic rete set up photochromic microcapsule in the cavity, the organic photochromic agent of intussuseption of photochromic microcapsule to add the antioxidant, adopt inorganic and organic photochromic to combine together, organic photochromic agent does not directly expose under the sunshine, prolongs photochromic surface fabric and discolours the life-span, and the setting of reflector layer improves the experience of discolouing, and visual effect is better.
(2) The heat absorber is arranged in the photochromic microcapsule, so that the absorption of the organic photochromic agent to energy can be accelerated and enhanced, the response speed of photochromic is accelerated, and enough energy can be absorbed to enable the organic photochromic agent to respond to sunlight and change color in the weather with weak light.
(3) The surface of the reflection column is provided with a fixed block, the surface of each fixed block is provided with a plurality of bulges, and the adjacent reflection columns are arranged in a mutually perpendicular mode, so that the stability of the reflection column in the light transmitting layer is improved, and the reflection column is not moved in the light transmitting layer due to the weaving process, so that the reflection effect and the stability are not influenced.
(4) The euphotic layer is further provided with a fabric bottom layer, so that the fabric performance is improved, and the surface of the euphotic layer is provided with the breathable micropores, so that the integral breathability of the fabric is improved.
Drawings
Fig. 3 is an enlarged view of a longitudinal cut of the light reflecting pillar of the present invention.
Fig. 1 is a front view of the present invention.
Fig. 2 is a partially enlarged view of a portion a in fig. 1.
In the figure: the light-transmitting and heat-absorbing composite material comprises a color-changing material layer 1, a light-transmitting layer 2, a light-reflecting column 3, a cavity 4, a through hole 5, an inorganic photochromic film layer 6, photochromic microcapsules 7, an organic photochromic agent 8, a heat absorber 9, a heat absorbing layer 91, a fixing block 10, bulges 11, a fabric bottom layer 12 and breathable micropores 13.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons skilled in the art without creative efforts belong to the protection scope of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "comprises", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, a method, an article or an apparatus including a series of elements includes not only those elements but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus, and the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings, obviously, the described embodiments are only a part of the embodiments of the present invention, but not all the embodiments, and the terms "center" and "center" are used for describing the technical solutions of the embodiments of the present invention, The terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, and the terms "mounted", "connected", and "connected" should be understood broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two elements can be directly connected or indirectly connected through an intermediate medium, and the two elements can be communicated with each other, so that the specific meaning of the terms in the invention can be understood by those skilled in the art.
Fig. 1 to 3 are schematic structural diagrams of a first embodiment of the present invention, in which a color-changing fabric under sunlight includes a fabric base layer and a color-changing material layer, the color-changing fabric is formed by mixing and weaving the fabric base layer and the color-changing material layer, the color-changing material layer can be selected as warp yarns, the fabric base layer is selected as weft yarns, the fabric base layer is made by blending bamboo carbon fibers and flame-retardant fibers, the weight ratio of the bamboo carbon fibers and the flame-retardant fibers in the weft yarns is 1.5:1, the color-changing material layer includes a light-transmitting layer 2, the light-transmitting layer 2 can be made of a plastic material, such as polycarbonate, polypropylene, polyethylene, polyamide, and the like, a plurality of light-reflecting columns 3 are arranged in the light-transmitting layer 2, the light-reflecting columns 3 are uniformly distributed in the light-transmitting layer 2, a cavity 4 is arranged inside each light-reflecting column 3, so as to form a hollow structure, and a plurality of through holes 5 are further arranged on each light-reflecting column 3, each through hole 5 penetrates through each corresponding light reflecting column 3 and is communicated with each cavity 4, a plurality of inorganic photochromic film layers 6 are also arranged on the surface of each light reflecting column 3, each inorganic photochromic film layer 6 is pasted on the light reflecting column 3, each cavity 4 is filled with photochromic microcapsules 7, organic photochromic agents 8 are filled in the photochromic microcapsules 7, the specific photochromic microcapsules 7 and the method for filling the photochromic microcapsules 7 with the organic photochromic agents 8 belong to the prior art, for example, tetrachloroethylene is used as a solvent to dissolve the photochromic agents such as spirooxazine compounds as core materials, melamine resin is used as a wall material, in-situ polymerization technology is used to coat the photochromic materials in the microcapsules, and simultaneously, in order to prevent the organic photochromic agents 8 from being oxidized under long-term illumination, antioxidants are added into the organic photochromic agents 8, the oxidizing agent may be one or a combination of two or more of tert-butyl hydroxy anisole, dibutyl hydroxy toluene and tert-butyl hydroquinone, and in the present invention, the organic photochromic agent 8 may be one or a combination of two or more of spiropyran, diarylethene or azobenzene, and the inorganic photochromic is nano titanium dioxide fiber.
Further, the wall of each photochromic microcapsule 7 is further provided with a heat absorber 9, the heat absorber 9 is composed of a heat absorbing layer 91 and a heat absorbing agent, the heat absorbing layer 91 is made of a nanofiber material, the heat absorbing agent is a material capable of absorbing and releasing heat, the heat absorbing body 9 can be obtained by preparing the heat absorbing layer 91 in the heat absorbing agent by adopting an impregnation process, the heat absorber 9 and the preparation thereof are the prior art, for example, the heat absorber 9 can be prepared by adopting silicon dioxide and polyethylene glycol, and the mass ratio of the silicon dioxide to the polyethylene glycol can be 1: 1.
the working principle of the embodiment is as follows: when meeting the irradiation of sunlight, light irradiates the inorganic photochromic film layer 6 through the euphotic layer 2 and irradiates the surface of the photochromic microcapsule 7 through the through holes 5, the inorganic photochromic film layer 6 absorbs the energy in sunlight and firstly changes color, the arrangement of the reflective column 3 can reflect a part of light, so that the situation that too much light irradiates the surface of the photochromic microcapsule 7 when the light is too strong is avoided, the organic photochromic agent 8 absorbs too much energy, the stability and the persistence of the organic photochromic agent are reduced, meanwhile, the reflective column 3 can reflect the color changed by the organic photochromic agent 8, the color change of the color-changing fabric has stereoscopic impression and is uniform in color change, the light irradiating the surface of the photochromic microcapsule 7 irradiates the organic photochromic agent 8, and the organic photochromic agent 8 absorbs the energy to change color, the organic photochromic agent 8 is not directly exposed to sunlight, the inorganic photochromic film layer 6 is stable, the photochromic is more stable, the color change life is prolonged, meanwhile, the heat absorber 9 is arranged in the photochromic microcapsule 7, the absorption of the organic photochromic agent 8 to energy can be accelerated and enhanced by the arrangement of the heat absorber 9, the response speed of the photochromic is accelerated, and enough energy can be still absorbed to enable the organic photochromic agent 8 to change color in response to the sunlight in the weather with weak light.
Example two: the embodiment is improved on the basis of the first embodiment, and otherwise, a plurality of fixed blocks 10 are only arranged on the surface of the reflective column 3, each fixed block 10 is integrally formed with the reflective column 3, each fixed block 10 is inserted into the transparent layer, each fixed block 10 can be needle-shaped, cylindrical or in other shapes, a plurality of protrusions 11 are arranged on the surface of each fixed block 10, each protrusion 11 is integrally formed with the fixed block 10, and each protrusion 11 is needle-shaped or cylindrical.
Furthermore, each of the reflective columns 3 is a cylindrical structure, and the adjacent reflective columns 3 are perpendicular to each other, so that each of the reflective columns 3 is more stable inside the light transmitting layer 2, and the reflective effect and stability, and further the color changing effect, are not affected by the movement of the reflective columns 3 in the light transmitting layer 2 due to the weaving process.
Example three: the third embodiment is an improvement on the second embodiment, a fabric bottom layer 12 is further arranged on the light transmitting layer 2, and the fabric bottom layer 12 is made of a nanofiber material, so that the friction force between the light transmitting layer 2 and the fabric bottom layer is improved, and the problem that the light transmitting layer 2 is not well twisted with the fabric bottom layer in the weaving process to influence the performance of the fabric due to the smooth surface of the light transmitting layer is avoided.
Furthermore, the surface of the euphotic layer 2 is provided with air-permeable micropores 13, so that the whole air permeability of the fabric is improved.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the invention as defined by the appended claims. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. Surface fabric discolours under sunshine, including surface fabric basic unit and the bed of material (1) that discolours, its characterized in that: the color-changing material layer (1) comprises a light transmitting layer (2), light reflecting columns (3) are arranged in the light transmitting layer (2), cavities (4) are arranged in the light reflecting columns (3), a plurality of through holes (5) are further formed in the light reflecting columns (3), each through hole (5) is communicated with each corresponding cavity (4), a plurality of inorganic photochromic film layers (6) are further arranged on the surface of each light reflecting column (3), photochromic microcapsules (7) are arranged in each cavity (4), organic photochromic agents (8) are filled in each photochromic microcapsule (7), antioxidants are added into the organic photochromic agents (8), heat absorbing bodies (9) are further arranged on the capsule walls of each photochromic microcapsule (7), each heat absorbing body (9) comprises a heat absorbing layer (91) and a heat absorbing agent, and the heat absorbing layer (91) is made of a nanofiber material, the surface of the light reflecting column (3) is provided with a plurality of fixed blocks (10), each fixed block (10) is inserted into the light transmitting layer (2), and the surface of each fixed block (10) is provided with a plurality of bulges (11); each fixing block (10) and the reflection column (3) are integrally formed.
2. The sunshine color-changing fabric as claimed in claim 1, wherein: each reflective column (3) is of a cylindrical structure, and the adjacent reflective columns (3) are arranged vertically.
3. The sunshine color-changing fabric as claimed in claim 2, wherein: the euphotic layer (2) is further provided with a fabric bottom layer (12), and the fabric bottom layer (12) is made of nanofiber materials.
4. The solar-allochroic fabric of claim 2 or 3, wherein: the inorganic photochromic film layer (6) is nano titanium dioxide fibers, and the organic photochromic agent (8) is one or a composition of more than two of spiropyran, diarylethene or azobenzene.
5. The sunless color-changing fabric of claim 4, wherein: the antioxidant is one or a composition of more than two of tert-butyl hydroxy anisole, dibutyl hydroxy toluene and tert-butyl hydroquinone.
6. The sunshine color-changing fabric as claimed in claim 5, wherein: and the surface of the euphotic layer (2) is provided with air-permeable micropores (13).
7. The solar-allochroic fabric of claim 5 or 6, wherein: the color-changing fabric is formed by mixing and weaving the fabric base layer and the color-changing material layer (1), the color-changing material layer (1) is warp yarns, the fabric base layer is weft yarns, and the fabric base layer is formed by blending bamboo charcoal fibers and flame retardant fibers.
CN202010886470.8A 2019-05-14 2019-05-14 Fabric capable of changing color under sunlight Active CN111959054B (en)

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CN201910399158.3A CN110116524B (en) 2019-05-14 2019-05-14 Fabric capable of changing color under sunlight

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CN111959054B (en) * 2019-05-14 2022-05-13 黛玛诗时尚服装有限公司 Fabric capable of changing color under sunlight

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