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Preparation method of foldable thermochromic device based on nanowire film

A thermochromic and nanowire technology, applied in replication/marking methods, instruments, nonlinear optics, etc., can solve problems such as inability to meet foldable thermochromic devices, affecting thermochromic speed, and poor particle structure flexibility. To achieve the effect of convenient low-cost large-scale promotion, rapid discoloration, and little impact of environmental fluctuations

Pending Publication Date: 2019-08-09
NANJING SILVERNANO NEW MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the general heating film is opaque. In order not to block the thermochromic display object on the upper surface of the substrate, it can only be made on the lower surface of the substrate. For flexible substrates (such as paper, polymer, etc.), the low thermal conductivity leads to slow temperature change. Ultimately affects the thermochromic speed; although the indium tin oxide (ITO) film is transparent, its particle structure is poorly flexible and cannot meet the needs of foldable thermochromic devices

Method used

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  • Preparation method of foldable thermochromic device based on nanowire film
  • Preparation method of foldable thermochromic device based on nanowire film
  • Preparation method of foldable thermochromic device based on nanowire film

Examples

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Embodiment 1

[0021] A method for preparing a foldable thermochromic device based on a nanowire film, comprising the following steps:

[0022] Step 1: Automatically scrape and coat the metal nanowire conductive ink on the flexible transparent substrate by an automatic scraper coating device, and then obtain a flexible metal nanowire film after drying. The specific process is as follows:

[0023] Spread the flexible substrate on the panel of the automatic scraper coater, open the panel for negative pressure adsorption, so that the substrate is firmly flattened on the panel; choose different types of Meyer rods to prepare metal nanowire films with different surface resistances, and place the Meyer rods Place it on the poles on both sides of the automatic scraper, spread the conductive ink of metal nanowires in a straight line along the inner side of the Mayer rod on the flexible substrate in front of the Meyer rod, set the running speed, and start the automatic scraper. Make the Meyer rod mo...

Embodiment 2

[0032] A method for preparing a foldable thermochromic device based on a nanowire film, comprising the following steps:

[0033] Step 1: Printing thermochromic display objects on a flexible substrate with an inkjet printer; where thermochromic inks with different changing temperatures are used to sequentially print thermochromic display objects with different changing temperatures. The specific process is as follows:

[0034] Lay the flexible substrate on the working plate of the inkjet printer, and position the substrate in place in two dimensions and in one dimension; inject a thermochromic ink into the ink cartridge through the filter, and connect the ink cartridge to the nozzle of the inkjet printer Assembled and connected, put it into the inkjet printer; use the inkjet printer's own software to design the target thermochromic display object graphics, control the work of the inkjet printer according to the designed display object graphics, and control the display through t...

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Abstract

The invention discloses a preparation method of a foldable thermochromic device based on a nanowire film. According to the preparation method of the foldable thermochromic device based on the nanowirefilm, when a metal nanowire film is located under a thermochromic display layer on a substrate, the metal nanowire film is prepared by automatic blade coating, and the hermochromic display layer is prepared by silk-screen printing; and when the thermochromic display layer is located under the metal nanowire film on the substrate, the hermochromic display layer is prepared by ink jet printing, andthe metal nanowire film is prepared by spray coating. The metal nanowire film has high optical transmittance, an ultralow resistance value and a high heat conductivity coefficient, has an invisibility function on the substrate, and can be located on the same side of the substrate with a thermochromic display object; and the quantity of heat is transmitted to a thermochromic material directly andrapidly, and the display object is not shielded.

Description

technical field [0001] The invention relates to a method for preparing a foldable thermochromic device based on a nanowire film. Background technique [0002] Thermochromic technology relies on temperature changes to regulate the optical properties of color-changing materials, and then realizes display objects (text, pictures, colors, etc.) from existing to non-existent or from scratch, or from one object to another or even multiple An object transformation technology, an intelligent electric heating color-changing device integrating a thin film heater and a thermochromic display object, can be used in anti-counterfeiting, digital display, intelligent pattern display, temperature indication and control, stress indication and other fields. Compared with devices that simply use thermochromic display objects, relying on active temperature control to achieve active discoloration, the display is accurate and less affected by environmental fluctuations. However, the general heati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/00B41M1/12B41M5/00
CPCG02F1/009B41M1/12B41M5/0047
Inventor 杨泽芳陶璟琦季书林
Owner NANJING SILVERNANO NEW MATERIALS TECH CO LTD
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