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Temperature-sensitive tag and application thereof

A sensitive and labeling technology, applied in identification devices, instruments, optics, etc., can solve the problems of uncontrollable temperature response, unreliable recording effect, and high cost of temperature monitoring devices, achieving reliable recording effect, controllable temperature response, and low cost. Effect

Inactive Publication Date: 2017-01-04
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above temperature monitoring devices generally have disadvantages such as high cost, unreliable recording effect and uncontrollable temperature response.

Method used

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  • Temperature-sensitive tag and application thereof
  • Temperature-sensitive tag and application thereof
  • Temperature-sensitive tag and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A 150 μm thick polyethylene terephthalate (PET) film is used as the base material, and a layer of indium tin oxide (ITO) is plated on its surface by magnetron sputtering as a transparent conductive layer, and then magnetron sputtered Method Coating a layer of tungsten trioxide (WO 3 ) thin film, as the electrochromic active layer, thereby constituting the electrochromic electrode.

[0040] Another PET film coated with ITO was used as the counter electrode.

[0041] Use polyethylene glycol (PEG400, melting point -3°C) with a molecular weight of 400 dissolved in 0.1 mol / L lithium bistrifluoromethanesulfonimide (LiTFSI) as the electrolyte, and use it to infiltrate the glass fiber separator to prepare the electrolyte layer.

[0042] Cut the three layers of material into 2cm x 1cm squares and stack them together, as shown in the instruction manual figure 1 shown.

[0043] At a room temperature of 27°C, apply a voltage of 3.2V between the electrochromic electrode and the ...

Embodiment 2

[0045] If the PEG400 in Example 1 is changed to PEG600, the melting point of the electrolyte becomes 20°C, and the label can indicate whether the item has experienced a process higher than 20°C.

Embodiment 3

[0047] The concentration of LiTFSI in Example 1 was reduced to 0.001mol / l, the electrolyte diaphragm was changed to plant fiber paper, and the rest remained unchanged. Then, when the electrochromic electrode was in a dark blue state, at room temperature, the applied voltage was removed, and the electrochromic electrode was turned off. The time required for the chromic electrode to turn back to pale yellow was changed to 20 hours.

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Abstract

The invention discloses a temperature-sensitive tag and application thereof, and belongs to the technical field of temperature monitoring. The tag comprises an electrochromic electrode, a counter electrode and an electrolyte layer arranged between the electrochromic electrode and the counter electrode. The electrochromic electrode has redox activity and can display different colors at different voltages. The electrolyte layer contains an electrolyte with an ionic conduction function. When applied to cold-chain logistics, the temperature-sensitive tag is pasted on the surface of an article needing temperature monitoring. The temperature-sensitive tag is reliable in recording effect, controllable in temperature response, low in cost and suitable for the cold-chain logistics industry.

Description

technical field [0001] The invention belongs to the technical field of temperature monitoring, and more specifically relates to a temperature-sensitive label suitable for the cold chain logistics industry and its application. Background technique [0002] The transportation of many food, medicine, and chemical products needs to be kept at low temperature to ensure the quality, so the cold chain logistics industry was born. In cold chain logistics, it is necessary to ensure that the goods are kept at low temperature throughout the whole process, or that the time when the temperature is higher than the set temperature cannot exceed a certain value, so a cheap and simple method is needed to monitor whether the goods have undergone a heating process, especially a simple temperature control Sensitivity labels to record individually whether each item has experienced overheating. [0003] Previous temperature-monitoring technologies include: RFID-coupled sensors, temperature-measu...

Claims

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Application Information

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IPC IPC(8): G09F3/02G02F1/153G02F1/155
CPCG09F3/0291G02F1/153G02F1/155G02F2001/164
Inventor 沈越闫河胡彬
Owner HUAZHONG UNIV OF SCI & TECH
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