A color-changing flexible heating composite film
A composite film and color-changing technology, which is applied in ohmic resistance heating, heating element materials, ohmic resistance heating parts, etc., can solve the problems of easy oxidation and corrosion, low ink adhesion, and inability to use for a long time, so as to improve Environmental stability, good curing effect, the effect of prolonging the service life
Active Publication Date: 2021-05-18
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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Problems solved by technology
When these flexible heating films are applied in the field of thermochromism, it is necessary to coat the surface with color-changing ink and set up a conductive layer. The ink has low adhesion and is not scratch-resistant, and the conductive layer is directly exposed to the air, which is easily oxidized and damaged. corrosion, so that it cannot be used for a long time, so the adhesion, scratch resistance and long-term environmental stability of the flexible heating film need to be improved urgently
Method used
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Embodiment 1
[0029] The color-changing flexible heating composite film of embodiment 1, such as figure 1 As shown, it includes a thermochromic first flexible polymer film layer 1, a conductive layer 2, a second flexible polymer film layer 3 and a conductive electrode 4, and the conductive layer 2 is stacked on the first flexible polymer film layer 1, The second flexible polymer film layer 3 is stacked on the conductive layer 2 , and the conductive electrodes 4 are stacked on the conductive layer 2 and located on both sides of the second flexible polymer film layer 3 .
[0030] In Example 1, the conductive layer 2 is a conductive network obtained by depositing silver nanowires on glass. The preparation process is as follows: drop 1 mL of silver nanowire solution with a concentration of 0.5 mg / L on a glass with a size of 50 mm × 50 mm, and roll Coating or spin-coating the silver nanowire solution to form a silver nanowire conductive network, heating at 160°C for 30 minutes to reduce the node...
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Abstract
The invention discloses a color-changing flexible heating composite film, which comprises a thermochromic first flexible polymer film layer, a conductive layer, a second flexible polymer film layer and a conductive electrode, and the conductive layer is stacked on the first flexible polymer film On the first layer, the second flexible polymer film layer is stacked on the conductive layer, and the conductive electrodes are stacked on the conductive layer and located on both sides of the second flexible polymer film layer. The color-changing flexible heating composite film of the present invention adopts commercialized thermochromic inks as raw materials, has simple preparation process and low cost, is conducive to large-scale production, and can improve the adhesion of conductive materials used in the field of thermochromic conductive layers. It has great application prospects in terms of strength, scratch resistance and environmental stability. The color-changing flexible heating composite film of the invention can be used and stored for a long time, has good insulation and safety, and can be used for thermochromic devices such as water cup insulation and temperature indication, thermochromic display devices, and thermotherapy pads.
Description
technical field [0001] The invention relates to the technical field of thermal heating films, in particular to a color-changing flexible heating composite film, which can be used for heat preservation of water cups and temperature indication, thermochromic display devices, thermotherapy pads, etc. device. Background technique [0002] In recent years, electric heating films have attracted more and more attention because of their wide application prospects, such as heating sensors, car window mirrors, and defrosting and defogging of display devices, thermal therapy pads for human body therapy, and thermochromic display devices. Wait. The traditional conductive material indium tin oxide (ITO) has been widely used in electric heating films, but its further development and application in next-generation smart flexible electronic devices is limited by its shortcomings such as scarcity of raw materials, complex preparation process, high cost, and high brittleness. application. ...
Claims
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IPC IPC(8): H05B3/02H05B3/03H05B3/12H05B3/34C09D11/50
CPCC09D11/50H05B3/02H05B3/03H05B3/12H05B3/34H05B2203/013H05B2203/017
Inventor 许炜石晓青宋伟杰沈文锋汪闰非
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI