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Thermochromic film

A thermochromic, quantum dot film technology, applied in instruments, nonlinear optics, optics, etc., can solve the problems of loss of temperature sensitivity, narrow discoloration interval, poor light resistance, etc., and achieve good long-term stability and color selectivity Large, color-changing continuous effect

Pending Publication Date: 2020-01-14
NINGBO DXC NEW MATERIAL TECH
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The main advantages of these organic color-changing materials are large selectivity of color-changing temperature, narrow color-changing range, and free combination of colors, etc., but their durability and light resistance are poor, and they are prone to decomposition and lose temperature sensitivity when the temperature is high.

Method used

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Experimental program
Comparison scheme
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Embodiment Construction

[0019] The present invention will be further described in detail below in combination with specific embodiments.

[0020] A thermochromic film, which includes a quantum dot film and barrier layers located on the upper and lower sides of the quantum dot film, and the quantum dot film contains quantum dots with thermochromic properties. The quantum dot film can be made of PET and other materials, and the function of the barrier layer is to isolate moisture and oxygen, and polypropylene film can be used. The compounding between the quantum dot film and the barrier layer is a conventional film compounding technology, which will not be repeated here. The method of mixing quantum dots into the quantum dot film also adopts the conventional prior art, which will not be repeated here.

[0021] The quantum dots can be CdSe quantum dots, and it is recommended to use CdSe quantum dots. Of course, the quantum dots may also use one or more of ZnS, ZnSe, ZnTe, CdS, CdSe, CdTe, HgS, HgTe, G...

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Abstract

The invention discloses a thermochromic film, which comprises a quantum dot film and barrier layers located on the upper side and the lower side of the quantum dot film, wherein the quantum dot film contains quantum dots with a thermochromic property. In the invention, the quantum dots have good tolerance to light and heat, so that the thermochromic film has good heat resistance and light resistance. In addition, the barrier layers for isolating water and oxygen are arranged on the two sides of the quantum dot film, so that the thermochromic film has good long-term stability. Compared with theexisting thermochromic film on the market, the thermochromic film provided by the invention has the characteristics of high color selectivity, continuous color change, light resistance, heat resistance, durability and the like.

Description

technical field [0001] The invention relates to a thermochromic film. Background technique [0002] Whether in military industry or in daily life, thermochromic materials play an important role. In the military field, the color-changing technique of modern battlefields is to use reversible color-reversing materials, so that the color of the protected target changes with the background color, and blends with the background, so as to achieve the purpose of visual stealth. In daily life, thermochromic materials can indicate hot and cold, and can be made into color-changing teacups indicating hot and cold, spoons for babies, feeding bottles, etc. [0003] At present, thermochromic materials are mainly concentrated in the following materials: [0004] Inorganic thermal phase change materials mainly include some metals, metal chlorides, metal oxides and polycrystals of various metal oxides, vanadates, chromates, tungstates, etc. The main advantages of these inorganic thermal ph...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/01
CPCG02F1/0147
Inventor 罗培栋樊华伟王立超
Owner NINGBO DXC NEW MATERIAL TECH
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