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Application of Ratiometric Oxygen Sensing Film in Temperature Detection

An oxygen sensing film and ratio technology, applied in thermometers, thermometers with physical/chemical changes, measuring heat, etc., can solve the problems of temperature measurement material interference and low sensitivity, and achieve easy operation, high sensitivity and reproducibility Good results

Active Publication Date: 2021-11-23
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the problems of serious interference and low sensitivity caused by changes in the external atmosphere of existing temperature measuring materials, and provides an application of a ratio oxygen sensing film in temperature detection

Method used

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  • Application of Ratiometric Oxygen Sensing Film in Temperature Detection
  • Application of Ratiometric Oxygen Sensing Film in Temperature Detection
  • Application of Ratiometric Oxygen Sensing Film in Temperature Detection

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specific Embodiment approach 1

[0030] Embodiment 1: The application of the ratiometric oxygen sensing membrane in temperature detection in this embodiment.

[0031] The invention provides a highly sensitive temperature measurement method based on metalloporphyrin room temperature phosphorescence. Using the principle that temperature can quench the phosphorescence emitted by the temperature-sensitive indicator platinum octaethylporphyrin (PtOEP), but has no effect on the reference indicator coumarin 6 (C6), the corresponding temperature sensing film was prepared. . The phosphorescence intensity-temperature IP-T calibration curves under different oxygen atmospheres are given, so that the ratiometric temperature sensing film can realize highly sensitive and accurate detection of temperature in a wide oxygen atmosphere.

specific Embodiment approach 2

[0032] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the ratio oxygen sensing membrane is not disturbed by changes in external oxygen during the temperature detection process. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0033] Embodiment 3: The difference between this embodiment and Embodiment 1 is that the preparation method of the ratio oxygen sensing membrane includes the following steps:

[0034] Platinum octaethylporphyrin (PtOEP) is used as a temperature-sensitive indicator, and coumarin 6 (C6) is used as a reference indicator against temperature changes; styrene (St) and trifluoroethyl methacrylate (TFEMA) As a reactive monomer, azobisisobutyronitrile (AIBN) was used as an initiator.

[0035] 1. Add styrene and trifluoroethyl methacrylate into a three-neck flask under argon protection, the synthesis temperature is 75-80°C, the stirring speed is 400-500rpm, and after 0.5-1h of reaction, the azo Add the diisobutyronitrile / toluene solution into the three-necked flask, and continue the reaction for 8.5-10 hours to obtain a colorless and transparent copolymer solution;

[0036] 2. Mix the toluene solution of platinum octaethylporphyrin and the toluene solution of coumarin 6 to obtain the P...

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Abstract

The application of the ratio oxygen sensing film in temperature detection relates to the application of a ratio oxygen sensing film. It is to solve the problems that the existing temperature measuring materials are seriously interfered by the change of the external atmosphere and have low sensitivity. Ratiometric oxygen sensing membranes are used for temperature detection. The ratio oxygen sensing film is not disturbed by the change of external oxygen during the temperature detection process. The ratiometric oxygen sensing film has a strong response ability to temperature and high sensitivity, and is suitable for accurate detection in the temperature range (32-60°C). The invention is applied to the field of temperature detection.

Description

technical field [0001] The invention relates to the application of a ratio oxygen sensing membrane. Background technique [0002] Temperature is a basic thermodynamic parameter describing physics, chemistry, biology, etc. In reality, accurate measurement of temperature is of great significance. For example, temperature control in the steelmaking process is directly related to the quality of finished products; accurate temperature measurement in combustion materials is conducive to the control of toxic gas emissions in combustion waste, which is directly related to the cleanliness of the environment. At present, the temperature measurement is mainly realized by thermocouples. The temperature measurement needs to be in contact with the measured object, and the temperature measurement range is small, which is far from meeting the requirements of today's life and technology. Therefore, the new optical temperature measurement technology is widely sought after. [0003] Temperat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01K11/20C08F212/08C08F220/24
CPCC08F212/08C08F220/24G01K11/20
Inventor 张治国张鸿林刘婷徐明明秦峰
Owner HARBIN INST OF TECH
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