A flexible over-temperature monitoring device
A monitoring device and over-temperature technology, which is applied to measuring devices, thermometers, measuring heat, etc., can solve problems such as application limitations, insufficient accuracy, and difficulty in monitoring, and achieve the effects of simple and convenient use, irreversible effects, and high reliability.
Active Publication Date: 2021-06-01
ANQING FEIKAI NEW MATERIAL CO LTD
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Problems solved by technology
The advantage of this type of thermometer is that it is easy to read, but the disadvantage is that it is not accurate enough. It is often used in ornamental fish tanks to indicate the water temperature
[0005] U.S. Patent US4859360 discloses a temperature monitoring device that can sense temperature and produce irreversible changes, which is realized by irreversible color changes caused by the glass transition temperature of cholesteric liquid crystal materials, but the device has a color change effect Not obvious, difficult to monitor with the naked eye, the production process of this type of device is also very complicated, the cost is high, and it cannot be recycled, and its application is also limited
Method used
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Embodiment 1-3
[0041]Three transparent ITO-PET films of 10 cm×18 cm and three black ITO-PET films of 10 cm×18 cm were prepared respectively, and the resistances were all 100Ω / □.
[0042] The chiral nematic phase liquid crystal of embodiment 1-3 is prepared by each compound listed in table 2 and weight percentage, then weigh chiral nematic phase liquid crystal and polymer material in the ratio of 85:15 by weight, polymer material Purchased from Kool Industrial (Shanghai) Co., Ltd., the product name is UV200. The two were stirred evenly at room temperature to obtain a mixture. Weigh 5g of the mixture, and spread them evenly between two ITO-PET films (one is a transparent ITO-PET film and the other is a black ITO-PET film), and the thickness of the mixture layer is controlled to be about 6 μm.
[0043] After coating evenly, place the device at a light intensity of 3mW / cm 2 Polymerize under a UV lamp for 6min, you can get the following figure 1 The flexible over-temperature monitoring device ...
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Abstract
The invention discloses a flexible over-temperature monitoring device, which comprises a first base layer, a second base layer and a mixture layer sandwiched between the first base layer and the second base layer, wherein the mixture layer contains at least liquid crystal and polymer The liquid crystal is a cholesteric phase or a chiral nematic phase liquid crystal. The over-temperature monitoring device provided by the present invention has the advantages of simple structure, low cost, obvious change in temperature sensing effect, irreversible temperature sensing effect, simple and convenient use process, no need for power-on during the monitoring process, high reliability, and recyclable use.
Description
technical field [0001] The invention relates to the field of temperature monitoring, in particular to a flexible over-temperature monitoring device which has an irreversible temperature sensing effect and can be recycled. Background technique [0002] During the transportation of some special items (such as fresh products, processed food, pharmaceuticals, biological products, etc.), there are strict requirements on the storage environment temperature of the goods, and problems such as deterioration and denaturation will occur if the temperature exceeds a certain temperature, such as the outbreak in Shandong in 2016. The problematic vaccine case is a typical case in which the suspect put the vaccine at room temperature in order to save costs, causing the vaccine to fail. A simple, effective and low-cost temperature monitoring device. [0003] At present, the temperature monitoring is mainly realized by using a thermometer that can record the temperature at regular intervals....
Claims
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IPC IPC(8): G01K11/165
CPCG01K11/165
Inventor 杨亚非丁文全
Owner ANQING FEIKAI NEW MATERIAL CO LTD