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Electrochromic fiber and preparation method and application thereof

A thermochromic and chromogenic technology, applied in fiber processing, textiles and papermaking, filament/thread forming, etc., can solve the problems of slow production speed, complicated preparation process, high cost, etc., and achieve high production efficiency and wide selection range , the effect of diversification of structural design

Active Publication Date: 2019-09-06
武汉新润兴材料科技有限公司
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  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above defects or improvement needs of the prior art, the present invention provides an electrothermochromic fiber, its preparation method and application, which adopts the thermal softening and drawing process in the preparation of optical fiber to obtain the electrothermochromic fiber with a three-layer composite structure. The middle layer of the fiber is the thermochromic layer, thus solving the technical problems of the existing electrothermochromic fiber preparation process complicated, high cost, and slow production speed

Method used

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  • Electrochromic fiber and preparation method and application thereof
  • Electrochromic fiber and preparation method and application thereof
  • Electrochromic fiber and preparation method and application thereof

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preparation example Construction

[0053] The invention provides a method for preparing an electrothermochromic fiber. The electrothermochromic fiber includes a composite material with a three-layer structure, which is a cladding layer, an intermediate layer and a core layer in sequence from the outside to the inside, wherein the cladding layer is a protective layer. layer, the middle layer is a thermochromic layer, and the core layer is a conductive layer;

[0054] The thermochromic layer is prepared by adopting the thermosoftening wire drawing method, specifically:

[0055] Obtaining the preform of the thermochromic layer first, and then performing thermosoftening drawing on the preform to obtain the fibers of the thermochromic layer;

[0056] The preform rod of the thermochromic layer contains a hole structure, the material of the conductive layer passes through the hole of the preform rod, and the thermochromic layer is obtained by using the thermosoftening wire drawing method, and the A conductive layer i...

Embodiment 1

[0143] In this embodiment, a coaxial electrothermochromic fiber is firstly provided, which has certain stability, electrical conductivity, friction resistance and color fastness to washing, is suitable for wearing, and has a thermochromic temperature of 31°C.

[0144] Among them, the electrothermochromic fiber electrode material is 304 stainless steel filaments with a diameter of 10 μm, the material of the color-changing layer is a composite material of thermochromic microcapsules and polymethyl methacrylate, the thickness of the color-changing layer is 50 μm, and the cladding material is Polymethyl methacrylate, 50 μm thick.

[0145] The embodiment of the present invention also provides an electrothermochromic fiber method including: preparation of a thermochromic composite material, preparation of a prefabricated rod with a central hole, and thermal drawing of the fiber.

[0146] The preparation method of thermochromic material comprises the following steps: (1) take by weig...

Embodiment 2

[0155]In the embodiment of the present invention, an electrothermochromic fiber with a square structure is provided, which has certain stability, electrical conductivity, friction resistance and color fastness to washing, is suitable for wearing, and has a thermochromic temperature of 31°C.

[0156] Among them, the electrothermochromic fiber electrode material is 304 stainless steel filaments with a diameter of 10 μm, the material of the color-changing layer is a composite material of thermochromic microcapsules and polymethyl methacrylate, the thickness of the color-changing layer is about 50 μm, and the cladding material It is polymethyl methacrylate with a thickness of about 50 μm.

[0157] The preparation of the central hole preform includes the following steps (film winding method): (1) filling the thermochromic composite material particles into figure 2 In the mold shown, the mold is a square groove of (length×width×height) 180mm×10mm×10mm, put the mold between the uppe...

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Abstract

The invention belongs to the field of functional fibers and particularly relates to an electrochromic fiber and a preparation method and application thereof. The electrochromic fiber comprises a composite material in a three-layer structure which comprises a coating layer, a middle layer and a core layer sequentially from outside to inside, wherein the coating layer is a protective layer, the middle layer is an electrochromic layer, and the core layer is a conductive layer. The conductive layer is made of a conductive layer material with an electrothermal effect; the electrochromic layer is prepared according to a thermal softening wire-drawing method, and a preformed rod of the electrochromic layer comprises a hole structure; the conductive layer material penetrates a hole of the preformed rod, and the conductive layer serving as the core layer is prepared in the electrochromic layer while the electrochromic layer is obtained according to the thermal softening wire-drawing method. Inuse of the electrochromic fiber, the conductive layer material emits heat under an electrified condition, and the electrochromic layer material of the middle layer gives play to a color changing function under the thermal action of the conductive layer.

Description

technical field [0001] The invention belongs to the field of functional fibers, and more specifically relates to an electrothermochromic fiber, its preparation method and application. Background technique [0002] With the development of wearable technology, people have higher and higher requirements for the functionalization and intelligence of materials. Consumers also put forward higher requirements for textiles. The functions of textiles and clothing are gradually expanding to the demand market. Controllable discoloration is only Smart fabrics have broad research prospects in the fields of military stealth, fashion, smart home and civilian clothing. Therefore, color-changing fibers and smart fabrics have become a hot field of exploration and research by scholars from all over the world. Among them, the color-changing fibers are mainly divided into two categories, active color-changing fibers that need power supply and passive color-changing fibers that do not need power ...

Claims

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Application Information

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IPC IPC(8): D01D5/34D03D15/00
CPCD01D5/34D03D15/00D10B2401/04D10B2401/16
Inventor 陶光明董英琴李攀吴嘉威
Owner 武汉新润兴材料科技有限公司
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