A temperature sensitive paint

A sensitive and paint technology, applied in the direction of heat-sensitive paint, luminescent paint, polyether paint, etc., can solve the problems of poor thermal conductivity, error, poor thermal conductivity of polymer coating film, etc., to reduce the temperature gradient, improve the response frequency, improve the sensitivity Effect

Inactive Publication Date: 2016-10-05
INST OF CHEM CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The temperature-sensitive paint film is a polymer film with poor thermal conductivity. When the film thickness is large, due to the temperature gradient between the film layers, a large error will be introduced to the experimental results. If the thickness is reduced, spraying such a thin Coating film will bring difficulty to the manufacturing process
Secondly, due to the poor thermal conductivity of polymer coatings, it will be difficult to show small temperature changes on the coating surface caused by heat flow in wind tunnel tests

Method used

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  • A temperature sensitive paint
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Raw materials: matrix material: polyethylene glycol with a molecular weight of 8000

[0055] Luminescent material: Y 2 o 3 :Eu 3+

[0056] Thermally conductive material: micron-sized aluminum powder, particle size 1-20μm

[0057] Solvent: Benzene

[0058] Take 100g of matrix material, 0.05g of luminescent material, 1.0g of heat-conducting material, and 20.0g of benzene, and stir at a high speed to obtain a temperature-sensitive coating, and cast the coating on the sample to be tested to form a coating film with a thickness of 20 μm. Dry at room temperature for 20 hours, and then dry at a high temperature of 80° C. for 18 hours to remove residual solvent to obtain the temperature-sensitive coating film. The prepared temperature-sensitive coating film has strong fluorescence intensity in the wavelength of 610-620nm when excited by the excitation light with the excitation wavelength of 365nm at 0-80°C. The temperature sensitive material is used for the measurement of...

Embodiment 2

[0060] Raw materials: matrix material: polyethylene glycol with a molecular weight of 20,000

[0061] Luminescent material: Ba 2 ZnS 3 :Mn 2+

[0062] Thermally conductive material: micron-sized aluminum powder, particle size 40-100μm

[0063] Solvent: Toluene

[0064] Take 100g of matrix material, 5.0g of luminescent material, 80g of heat-conducting material, and 300g of toluene, and stir fully at a high speed to obtain a temperature-sensitive coating, and apply or cast the coating on the sample to be tested to form a coating film with a thickness of 80 μm. Dry at room temperature for 50 hours, and then dry at a high temperature of 110° C. for 30 hours to remove residual solvent to obtain the temperature-sensitive coating film. The prepared temperature-sensitive coating film has strong fluorescence intensity in the wavelength of 600-625nm when excited by the excitation light with the excitation wavelength of 365nm at 0-80°C. The temperature sensitive material is used fo...

Embodiment 3

[0066] Raw materials: matrix material: polyethylene glycol with a molecular weight of 18000

[0067] Luminescent material: trifluoroacetylated thienoyl europium

[0068] Thermally conductive material: micron-sized aluminum powder, particle size 20-50μm

[0069] Solvent: Xylene

[0070] Take 100g of matrix material, 2.1g of luminescent material, 20.0g of micron-sized aluminum powder, and 150g of xylene, and stir fully at high speed to obtain a temperature-sensitive coating, and apply or cast the coating on the sample to be tested to a thickness of 100 μm. The coating film was dried at room temperature for 35 hours, and then dried at a high temperature of 140° C. for 19 hours to remove residual solvent to obtain the temperature-sensitive coating film. The prepared temperature-sensitive coating film has strong fluorescence intensity in the wavelength of 610-625nm when excited by the excitation light with the excitation wavelength of 365nm at 0-80°C. The temperature sensitive m...

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Abstract

The invention relates to a temperature-sensitive coating and particularly relates to the temperature-sensitive coating used in non-contacting temperature measurement and a preparation method of the coating. The invention belongs to the technical field of luminescent coating. The temperature-sensitive coating comprises following components: 100 parts of a basic material, 0.01-10 parts of a luminescent material, 1-80 parts of a thermal-conductive material and 20-300 parts of a solvent. The basic material is a high-molecular polymer and is preferably selected from one of polyethylene glycol of polystyrene resin. By means of addition of the thermal-conductive material to the temperature-sensitive coating, the temperature-sensitive coating is enhanced in thermal-conductivity, is reduced in temperature gradient among coating layers and is increased in temperature response frequency. In addition, the temperature-sensitive coating is increased in sensitivity so that difficult during a preparation technology of a spray-coating film is reduced, which is beneficial to increase of a measurement precision.

Description

technical field [0001] The invention relates to a temperature-sensitive coating used for non-contact temperature testing and a preparation method thereof, belonging to the technical field of luminescent coatings. Background technique [0002] Surface temperature and its distribution are one of the important physical parameters in heat transfer and aerodynamic thermodynamics of experimental devices. Surface temperature distribution measurement is widely used in aerospace, high-speed vehicles, and environmental, biological, and medical fields, such as the analysis and evaluation of various flow phenomena in aircraft design, thermal protection and thermal design of hot-end components, etc. An important basis for flow dynamics and evaluation of relevant performance parameters. [0003] The conventional surface temperature measurement method is to embed or bury the temperature measurement components on the surface of the measured object in a discrete point / array manner. Its main...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D171/08C09D125/06C09D5/22C09D5/26C09D7/12
CPCC08K3/08C08K2003/0806C08K2003/0812C09D5/22C09D5/26C09D7/20C09D7/69C09D125/06C09D171/00C09K11/7701C09K11/883C09K11/885
Inventor 金熹高王志栋尚金奎屈小中史燚金毕青於国伟刘治田陈柳生王鹏衷洪杰赵荣奂
Owner INST OF CHEM CHINESE ACAD OF SCI
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