Fast Response Pressure Sensitive Paint Pressure Measurement System without Temperature Effect and Its Application

Abstract

The present invention relates to a fast-response pressure-sensitive paint pressure measurement system without temperature effect and its application. The measurement system includes a calibration chamber and the following components located inside the calibration chamber: a wind tunnel (1) for providing the wind pressure for testing; a model (2) for carrying the pressure-sensitive paint; an excitation light source (3) for exciting the pressure-sensitive paint; a high-speed camera (5) for collecting the luminescence images, and the excitation light source (3) and the high-speed camera (5) are located above the model (2); an optical filter (6) is provided between the high-speed camera (5) and the model (2). This system is applied to test the pressure distribution of the pressure-sensitive paint in the flow field, specifically including the following steps: preparing and spraying the pressure-sensitive paint; calibrating the samples; and conducting the pressure distribution test of the pressure-sensitive paint. Compared with the prior art, the present invention eliminates the measurement error caused by temperature, making it unnecessary to perform complex temperature effect correction processing during the measurement process of the pressure-sensitive paint.

Description

Technical Field

[0001] The present invention relates to the technical field of aerodynamics and fluid mechanics testing, and particularly to a fast-response pressure-sensitive paint pressure measurement system without temperature effect and its application. Background Art

[0002] Pressure-sensitive paint (PSP) is a non-contact optical measurement technology for flow field pressure. This technology utilizes the "oxygen quenching" effect of a class of pressure-sensitive luminescent materials, and its photoluminescence process is affected by the oxygen partial pressure in the environment. Based on this effect, a quantitative relationship between the emission light intensity of PSP after being excited and the surrounding air pressure can be established. Compared with traditional flow field pressure measurement technologies such as pressure scanning valves and pressure sensors, PSP technology has many advantages such as high spatial resolution, low cost, and simple preparation work. Currently, it has been widely used in various aerodynamic experiments at home and abroad.

[0003] However, when PSP technology is applied to the measurement of model surface pressure with obvious temperature changes, such as transonic / supersonic wind tunnel measurement, there are three main challenges:

[0004] (1) PSP technology is based on the "oxygen quenching" effect in the photoluminescence process and calculates the pressure measurement value based on the change in light intensity. The light emission intensity of most photoluminescent materials has a temperature effect, and its emission intensity decreases with the increase in temperature. Especially for pressure-sensitive luminescent materials, its temperature effect is particularly prominent, up to 2% / °C. In transonic / high-supersonic wind tunnel measurement, due to the intense aerodynamic heating effect of high-speed airflow, the temperature gradient on the model surface can reach more than 40°C. The common pressure sensitivity of PSP is between 0.4% / kPa - 0.8% / kPa. Therefore, the pressure measurement error caused by the temperature effect in transonic / supersonic wind tunnels is more than 100 kPa. Traditional methods require additional measurement of the temperature distribution on the model surface to correct the temperature effect of PSP. Usually, temperature-sensitive paint (TSP), or infrared temperature measurement, or measurement methods of two-component pressure-sensitive paint are used. However, the above methods all require additional experimental equipment and preparation processes, seriously affecting the experimental efficiency, and all have certain defects. For example, in TSP measurement, it is impossible to ensure that the temperature distribution on TSP is the same as that on PSP. Infrared temperature measurement is greatly affected by the emissivity of the model surface. The two-component pressure-sensitive paint has measurement errors caused by spectral overlap and spatial position errors of dual cameras.

[0005] (2) In transonic / supersonic wind tunnel measurement, due to various considerations such as counterweight vibration deformation, there are high requirements for the materials of the test model. The aerodynamic shape of the model will also change continuously with the change of research content. Therefore, PSP should have the ability to be conveniently arranged on models with different shapes and materials.

[0006] (3) In transonic / supersonic wind tunnel measurements, the pressure distribution on the model surface has highly unsteady characteristics, and the pressure fluctuation frequency is as high as the kilohertz level. The pressure response of PSP needs to meet the requirements of unsteady measurement. At the same time, the high acquisition frequency also poses high requirements on the signal intensity of PSP.

[0007] Currently, there is no PSP coating at home and abroad that can solve the above three problems simultaneously. US5965642A discloses a steady-state pressure-sensitive paint, which uses a fluorinated polymer as the coating material and can reduce the temperature sensitivity of the pressure-sensitive coating to 0.4% / °C, improving the accuracy of pressure measurement. However, in transonic / supersonic wind tunnel measurements, it still brings a temperature error of more than 10 kPa and cannot solve the problems described in Challenge 1. In addition, the PSP proposed in this patent is a steady-state PSP, and the coating structure is relatively dense, and it can only achieve a dynamic response at the hundred-hertz level and cannot solve the problems described in Challenge 3.

[0008] The paper "A temperature-cancellation method of pressure-sensitive paint on porous anodic alumina using 1-Pyrenesulfonic acid" published in the journal "JOURNAL OF LUMINESCENCE" introduces a pressure-sensitive paint that can cancel the temperature effect. This paint is developed based on an anodic alumina coating and uses the opposite temperature-dependent trends of the intensities of two emission peaks of a single luminescent material to achieve temperature effect cancellation. Its dynamic response performance has been improved, and it can achieve a pressure response at the kilohertz level. However, this paint can only be applied to the surface of aluminum models, and the preparation time is long and the process is complex, and it cannot solve the problems described in Challenge 2 above. This paint is based on the cancellation effect within a narrow spectral band (bandwidth less than 40 nm), and its emission intensity is severely restricted by the bandwidth and cannot solve the problems described in Challenge 3.

[0009] The paper "Suppression of thermal quenching in fast-responding pressure-sensitive paint by restricting lattice relaxation of luminescent molecules" published in the journal "JOURNAL OF LUMINESCENCE" introduced a pressure-sensitive paint without temperature effect. This pressure-sensitive paint reduces molecular relaxation based on molecular self-assembly technology and developed a coating without temperature sensitivity below 60 °C on anodic aluminum oxide thin film. This pressure-sensitive paint is arranged by pasting, has no requirements for model materials, and can achieve a pressure response at the kHz level. However, anodic aluminum oxide thin film is a brittle and fragile material, which can only be arranged on flat models and cannot solve the problems described in Challenge 2, making it difficult to be applied on the surface of complex-shaped models. Summary of the Invention

[0010] The object of the present invention is to provide a fast-response pressure-sensitive paint without temperature effect, its preparation method and application, so as to overcome at least one of the defects existing in the above-mentioned prior art. The present invention introduces a mesoporous material loaded with fluorescent molecules. The high-temperature solubilization characteristic formed between the mesoporous structure and the fluorescent molecules endows it with a negative temperature effect, which can equally eliminate the temperature effect of the pressure-sensitive luminescent material. And based on this paint, a measurement system suitable for measuring the surface pressure of transonic / supersonic models is proposed.

[0011] The concept of the present invention is to introduce a mesoporous material loaded with fluorescent molecules into the PSP. It itself has high-temperature solubilization characteristics. By adjusting the concentration ratio and impregnation time of the fluorescent molecules, the high-temperature solubilization effect is changed to achieve different luminescence characteristics with increasing intensity as the temperature rises. Then, combined with the luminescence characteristic of the PSP that the luminescence intensity decreases with increasing temperature, a suitable filter band is selected to combine the two signals so that their temperature effects cancel each other out, realizing the cancellation of the temperature effect of the PSP. The present invention realizes the cancellation effect of the temperature effect within a wide spectral range (band width of 200 nm), effectively improves the signal intensity of the PSP, and only requires one camera for measurement, avoiding the great influence of the infrared temperature measurement on the emissivity of the model surface, and the measurement error caused by spectral overlap and the spatial position error of the two cameras in the two-component pressure-sensitive paint. At the same time, the porous structure of the mesoporous material also improves the oxygen permeation rate in the pressure-sensitive paint, realizing the rapid response of the pressure-sensitive paint to pressure. The arrangement method of this paint adopts the spraying method and can be applied to the surface of models made of any material and any shape. Therefore, the present invention is completely different from the patents and literatures described in the background technology in terms of the principle of eliminating temperature effect, preparation method, dynamic characteristics, signal intensity, etc.

[0012] The object of the present invention can be achieved by the following technical solutions:

[0013] A fast-response pressure-sensitive paint pressure measurement system without temperature effect, comprising a calibration chamber and the following components located inside the calibration chamber:

[0014] A wind tunnel for providing wind pressure for testing;

[0015] A model for carrying the pressure-sensitive paint;

[0016] An excitation light source for exciting the pressure-sensitive paint;

[0017] A high-speed camera for collecting luminescence images;

[0018] The said excitation light source and high-speed camera are located above the model.

[0019] Furthermore, an optical filter is provided between the high-speed camera and the model.

[0020] An application of the fast-response pressure-sensitive paint pressure measurement system without temperature effect as described above, this system is applied to test the pressure distribution of the pressure-sensitive paint in a flow field, specifically including the following steps:

[0021] Prepare and spray the pressure-sensitive paint: Prepare a fast-response pressure-sensitive paint without temperature effect, and spray the pressure-sensitive paint on the surface of the calibration sample and / or the model;

[0022] Calibration sample: Fix the calibration sample sprayed with the pressure-sensitive paint in the calibration chamber, then irradiate the calibration sample with the excitation light source, adjust the air pressure in the calibration chamber through the wind tunnel, use the high-speed camera to collect luminescence images at different pressures, and record the ratio of the change in luminescence intensity. Finally, obtain the calibration curve of pressure-light intensity ratio by fitting the light intensity ratio according to the given pressure;

[0023] Conduct pressure distribution test of the pressure-sensitive paint: Spray the fast-response pressure-sensitive paint without temperature effect on the surface of the model to be measured, place the model in the wind tunnel flow field, use the excitation light source to excite the coating, use the high-speed camera to collect luminescence images at different pressures, and record the change in luminescence intensity. According to the calculated light intensity ratio and the calibration curve of pressure-light intensity ratio, obtain the pressure distribution on the measured surface of the pressure-sensitive paint in the flow field to be measured.

[0024] Furthermore, after spraying, place the calibration sample and / or the model in a fume hood and let it stand for 20 - 60 minutes until the solvent has completely volatilized, then the spraying is completed.

[0025] Furthermore, the specific steps for preparing the pressure-sensitive paint are as follows:

[0026] A fluorescent molecule with an oxygen quenching effect is added to an organic solvent in which a polymer is dissolved. After stirring, a pressure-sensitive coating preform is obtained.

[0027] A mesoporous material is added to an organic solvent in which a fluorescent molecule is dissolved. After the mesoporous material is impregnated, a mesoporous luminescent material with a negative temperature effect is obtained.

[0028] The pressure-sensitive coating preform and the mesoporous luminescent material with a negative temperature effect are mixed and stirred evenly to obtain a fast-response pressure-sensitive coating without a temperature effect.

[0029] Among them, a mesoporous material loaded with a fluorescent molecule is introduced. The high-temperature solubilization characteristic formed between the mesoporous structure and the fluorescent molecule endows it with a negative temperature effect, which can equally eliminate the temperature effect of the pressure-sensitive luminescent material.

[0030] Further, the organic solvent is at least one of dichloromethane, toluene, acetone, tetrahydrofuran, or chloroform.

[0031] Further, the polymer is at least one of silicone rubber, polyethylene, or polystyrene; the fluorescent molecule with an oxygen quenching effect is at least one of PtTFPP or PtOEP; the fluorescent molecule is at least one of fluorescein, coumarin, or rhodamine-based luminescent materials; the mesoporous material is at least one of mesoporous alumina, mesoporous silica, or mesoporous carbon materials.

[0032] Further, the mass concentration of the polymer in the organic solvent is 0.01 - 0.1 g / ml; the mass ratio of the polymer to the fluorescent molecule with an oxygen quenching effect is (10 - 100):(0.1 - 10).

[0033] Further, the mass concentration of the fluorescent molecule in the organic solvent is 0.1 - 100 mg / ml; the mass ratio of the fluorescent molecule to the mesoporous material is (0.1 - 100):(10 - 200).

[0034] Further, the impregnation time is 20 minutes - 2 days. At this time, the fluorescent molecule has been impregnated inside the mesoporous material, forming a luminescent material with a negative temperature effect.

[0035] Compared with the prior art, the present invention has the following advantages:

[0036] (1) A luminescent material with a negative temperature effect is prepared by introducing a mesoporous material and a fluorescent molecule, eliminating the temperature effect of the pressure-sensitive coating, thereby eliminating the error caused by temperature. This makes the measurement process of the pressure-sensitive coating not require complex temperature effect correction processing, nor complex measurement equipment such as a color camera or a dual camera.

[0037] (2) By adopting the spraying arrangement method, the pressure-sensitive coating for eliminating the temperature effect can be arranged on models of any material and shape.

[0038] (3) The temperature effect cancellation effect within a wide spectral range (bandwidth 200 nm) is achieved, effectively enhancing the signal intensity of the pressure-sensitive coating for eliminating the temperature effect, and only one camera is required for measurement. Description of the Drawings

[0039] Figure 1 It is a schematic structural diagram of the pressure measurement system in the embodiment;

[0040] Figure 2 It is an enlarged schematic diagram of the pressure-sensitive coating in the embodiment;

[0041] Figure 3 It is a schematic diagram showing the change of the emission spectrum of the pressure-sensitive coating with temperature in the embodiment;

[0042] Figure 4 It is a schematic diagram showing the change of the emission spectrum of the pressure-sensitive coating with pressure in the embodiment;

[0043] Figure 5 It is a schematic diagram of the camera pressure calibration of the pressure-sensitive coating in the embodiment;

[0044] Figure 6 It is a schematic diagram of the camera temperature calibration without the pressure-sensitive coating in the embodiment;

[0045] Figure 7 It is a schematic diagram of the response time calibration of the pressure-sensitive coating in the embodiment;

[0046] The labels in the figure indicate: 1 - Transonic / supersonic wind tunnel, 2 - Cone-shaped experimental model, 3 - UV-LED light source, 4 - Excitation light, 5 - High-speed camera, 6 - Optical filter, 7 - Emission signal, 8 - Negative temperature coefficient luminescent material, 9 - Pressure-sensitive luminescent material, 10 - Model surface. Detailed Embodiment

[0047] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation manners and specific operation processes are given, but the protection scope of the present invention is not limited to the following embodiments.

[0048] All solvents and reagents used in the following embodiments are purchased from commercial sources.

[0049] The preparation process of a fast-response pressure-sensitive coating without temperature effect is as follows:

[0050] 1. First, prepare the pressure-sensitive coating preproduct. Take an appropriate amount of organic solvents (dichloromethane, toluene, acetone, etc.), weigh the corresponding weight of solid polymer particles (silicone rubber, polyethylene, polystyrene, etc.) at a ratio of 0.01 - 0.1 g / ml, put them into the organic solvent, and then add fluorescent molecules with oxygen quenching effect (PtTFPP, PtOEP, etc.) at a ratio of 0.1 - 10 mg / ml. Stir for 24 hours using a magnetic stirrer to obtain the pressure-sensitive coating preproduct.

[0051] 2. Second, prepare the mesoporous luminescent material with a negative temperature effect. Take an appropriate amount of organic solvents (tetrahydrofuran, chloroform, dichloromethane, etc.), and add fluorescent molecules (fluorescein, coumarin, rhodamine-based luminescent materials) at a ratio of 0.1 - 100 mg / ml. Then weigh the corresponding weight of mesoporous materials (mesoporous alumina, mesoporous silica, mesoporous carbon materials, etc.) at a ratio of 0.01 - 0.2 g / ml and soak them in the organic solvent.

[0052] 3. Control the soaking time to be 20 minutes - 2 days. After reaching the soaking time, quickly take out the mesoporous material in the organic solvent. At this time, the luminescent molecules have been soaked inside the mesoporous material, forming a luminescent material with a negative temperature effect.

[0053] 4. After taking out the luminescent mesoporous material, quickly mix it with the pressure-sensitive coating preproduct, stir evenly, and spray it on the surface of the test model.

[0054] 5. After spraying, place the model in a fume hood and let it stand for 20 - 60 minutes until the solvent has completely evaporated, obtaining a fast-response pressure-sensitive coating without temperature effect.

[0055] The usage process of the present invention is as follows:

[0056] 1. Prepare and spray the fast-response pressure-sensitive coating without temperature effect: Prepare the fast-response pressure-sensitive coating eliminating temperature effect according to the above preparation steps, and use an air spray gun to evenly spray the coating on the surface of the sample (for calibration) or the model;

[0057] 2. Calibrate the sample: Fix the sample sprayed with the fast-response pressure-sensitive coating without temperature effect in the calibration box, then irradiate the sample with an excitation light source, adjust the air pressure in the calibration box, use a single camera to collect the luminescent images at different pressures, and the ratio of the change in luminescence intensity. Finally, fit the light intensity ratio according to the given pressure to obtain the calibration curve of pressure-light intensity ratio;

[0058] 3. Set up a pressure test system: Spray a fast-response pressure-sensitive paint without temperature effect on the surface of the model to be tested, and place the model in the flow field. Use an excitation light source to excite the coating, and use a single camera to collect the light intensity changes during the experiment. According to the calculated light intensity ratio and the calibration curve of pressure-light intensity ratio, obtain the pressure distribution of the measured surface in the flow field to be tested.

[0059] Example

[0060] 1. Take an appropriate amount of dichloromethane, weigh the corresponding weight of polystyrene at a ratio of 0.03 g / ml, put it into the organic solvent, and then add PtTFPP at a ratio of 0.25 mg / ml respectively. Stir with a magnetic stirrer for 24 hours to obtain a pressure-sensitive paint preform.

[0061] 2. Take an appropriate amount of dichloromethane, add mesoporous material at a ratio of 0.20 g / ml, and then add 3-(2'-benzothiazolyl)-7-diethylaminocoumarin fluorescent molecule at 4 mg / ml, and start timing.

[0062] 3. After 12 hours of timing, take out the mesoporous material in the solution and mix it with the pressure-sensitive paint preform.

[0063] 4. Use a spray gun to spray the mixed solution on the surface of the experimental model. After spraying, place the model in a fume hood and let it stand for 20 minutes until the solvent has completely evaporated to obtain a fast-response pressure-sensitive paint that eliminates the temperature effect.

[0064] 5. Uniformly spray the prepared paint on the surface of an aluminum sheet with a diameter of 10 mm and a thickness of 0.5 mm. Place the aluminum sheet in a calibration box, gradually change the air pressure and temperature in the calibration box, and use an excitation light source to excite the coating. Use a spectrometer to record the spectral changes during the temperature and pressure changes, and then calculate the spectral range where the temperature effect is eliminated to obtain the corresponding filter configuration.

[0065] 6. Use the corresponding filter configuration obtained in step 4, install it on the camera, and repeat the calibration process in the previous step to obtain the pressure-temperature calibration curve of the camera and verify the effect of eliminating the temperature effect.

[0066] 7. Press Figure 1 Set up a pressure measurement system. The pressure measurement system includes: a wind tunnel 1 for providing the test wind pressure; a model 2 for carrying the fast-response pressure-sensitive paint without temperature effect; a UV LED light source 3 for exciting the pressure-sensitive paint; a high-speed camera 5 for collecting the luminous image or light intensity; an optical filter 6. The UV LED light source 3 is located obliquely above the model 2, the optical filter 6 is located above the model 2, and the high-speed camera 5 is located above the optical filter 6. After the pressure-sensitive paint is excited, the luminous signal enters the high-speed camera through the configured filter.

[0067] 8. Spray the prepared coating evenly on the surface of the cone model 2. Before opening the wind tunnel 1, turn on the UV LED light source 3 and collect the reference luminous intensity image. After opening the wind tunnel 1, use the high-speed camera 5 to continuously collect the luminous signal. After obtaining the light intensity ratio data, without temperature correction, according to the camera calibration curve obtained in step 5, the pressure distribution can be obtained.

[0068] In this embodiment, by introducing a mesoporous material loaded with fluorescent molecules into the PSP, which itself has the property of high-temperature solubilization, by adjusting the concentration ratio and impregnation time of the fluorescent molecules, the high-temperature solubilization effect is changed, and the luminescence property of increasing intensity with increasing temperature is realized. Combining with the luminescence property that the luminescence intensity of the PSP decreases with increasing temperature, select a suitable filter band, merge the two signals, and make their temperature effects cancel each other out, so as to achieve the cancellation of the temperature effect of the PSP. At the same time, the cancellation effect of the temperature effect in a wide spectral range (bandwidth 200nm) is realized, effectively improving the signal intensity of the PSP, and only one camera is required for measurement. At the same time, the porous structure of the mesoporous material also improves the oxygen penetration rate in the pressure-sensitive coating, realizing the rapid response of the pressure-sensitive coating to pressure. The coating arrangement method uses the spraying method and can be applied to the surface of models of any material and any shape.

[0069] The above is only a preferred embodiment of the present invention, and it is not a limitation of the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the technical solution content of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. A fast-response pressure-sensitive paint pressure measurement system without temperature effect, characterized in that Comprising a calibration chamber and the following components located inside the calibration chamber: A wind tunnel (1) for providing the wind pressure for testing; A model (2) for carrying a pressure-sensitive paint; An excitation light source (3) for exciting the pressure-sensitive paint; A high-speed camera (5) for collecting luminescent images; The excitation light source (3) and the high-speed camera (5) are located above the model (2); This system is applied to test the pressure distribution of the pressure-sensitive paint in the flow field, and specifically includes the following steps: Preparing and spraying the pressure-sensitive paint: Preparing a fast-response pressure-sensitive paint without temperature effect, and spraying the pressure-sensitive paint on the calibration sample and / or the surface of the model (2); The specific steps are as follows: Adding a fluorescent molecule with oxygen quenching effect to an organic solvent dissolving a polymer, and after stirring, a pressure-sensitive paint preform is obtained; Adding a mesoporous material to an organic solvent dissolving the fluorescent molecule, and after the mesoporous material is impregnated, a mesoporous luminescent material with negative temperature effect is obtained; Mixing the pressure-sensitive paint preform and the mesoporous luminescent material with negative temperature effect, and after stirring evenly, a fast-response pressure-sensitive paint without temperature effect is obtained; Calibration sample: Fixing the calibration sample sprayed with the pressure-sensitive paint in the calibration chamber, then irradiating the calibration sample with the excitation light source (3), adjusting the air pressure in the calibration chamber through the wind tunnel (1), using the high-speed camera (5) to collect luminescent images at different pressures, and recording the ratio of the change in luminescence intensity. Finally, fitting the light intensity ratio according to the given pressure to obtain the calibration curve of the pressure-light intensity ratio; Conducting the pressure distribution test of the pressure-sensitive paint: Spraying the fast-response pressure-sensitive paint without temperature effect on the surface of the model (2) to be measured, placing the model (2) in the flow field of the wind tunnel (1), exciting the coating with the excitation light source (3), using the high-speed camera (5) to collect luminescent images at different pressures, and recording the change in luminescence intensity. According to the calculated light intensity ratio and the calibration curve of the pressure-light intensity ratio, the pressure distribution of the pressure-sensitive paint on the measured surface in the flow field to be measured is obtained.

2. The pressure measurement system of a fast-response pressure-sensitive paint without temperature effect according to claim 1, wherein, An optical filter (6) is provided between the high-speed camera (5) and the model (2).

3. A pressure measurement system for a fast-response pressure-sensitive paint without temperature effect according to claim 1, characterized in that, After spraying, place the calibration sample and / or the model (2) in a fume hood and let it stand for 20 - 60 min until the solvent volatilizes completely, then the spraying is completed.

4. A fast-response pressure-sensitive paint pressure measurement system without temperature effect according to claim 1, characterized in that, The organic solvent is at least one of dichloromethane, toluene, acetone, tetrahydrofuran, or chloroform.

5. A pressure measurement system for a fast-response pressure-sensitive paint without temperature effect according to claim 1, characterized in that, The polymer is at least one of silicone rubber, polyethylene, or polystyrene; The fluorescent molecule with oxygen quenching effect is at least one of PtTFPP or PtOEP; The fluorescent molecule is at least one of fluorescein, coumarin, or rhodamine-based luminescent materials; The mesoporous material is at least one of mesoporous alumina, mesoporous silica, or mesoporous carbon materials.

6. The pressure measurement system of a fast-response pressure-sensitive paint without temperature effect according to claim 1, characterized in that The mass concentration of the polymer in the organic solvent is 0.01 - 0.1 g / ml; The mass ratio of the polymer to the fluorescent molecule with oxygen quenching effect is (10 - 100):(0.1 - 10).

7. A fast-response pressure-sensitive paint pressure measurement system without temperature effect according to claim 1, characterized in that The mass concentration of the fluorescent molecule in the organic solvent is 0.1-100 mg / ml; the mass ratio of the fluorescent molecule to the mesoporous material is (0.1-100):(10-200).

8. A pressure measurement system for a fast-response pressure-sensitive paint without temperature effect according to claim 1, characterized in that, The impregnation time is 20 minutes to 2 days.

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