A mechanoluminescent material, a preparation method and application thereof in integrated sensing

Abstract

This invention relates to the field of luminescent materials technology, and more particularly to a mechanoluminescent material, its preparation method, and its application in integrated sensing. The chemical formula of the mechanoluminescent material is: Cs3GdGe3O9:xTb 3+ ,yEu 3+ ,zNa + Tb in the chemical formula 3+ As the activator, Cs3GdGe3O9 is the matrix, and Eu is used as the activator. 3+ Provides a second luminescent center, via Na + For Cs + By substituting and regulating the content and distribution of defect energy levels, the color of mechanoluminescent materials can be tunable; based on molar percentage: 0 < x < 0.5, 0 ≤ y < 0.5, 0 ≤ z < 0.5; the mechanoluminescent material prepared by the method provided in this invention exhibits monochromatic mechanoluminescent phosphor Cs3GdGe3O9:0.03Tb 3+ Utilizing lanthanide ions Eu 3+ The co-doping introduces a second characteristic emission band and cation Na + The invention addresses the shortcomings of traditional methods by replacing and regulating the color of mechanoluminescence, achieving adjustable color and a simple regulation method. The effect can be effectively adjusted by the doping concentration. The mechanoluminescent material provided by this invention has the potential to sense temperature and speed, and is expected to be applied in integrated sensing.

Description

Technical Field

[0001] This invention relates to the field of luminescent materials technology, and in particular to a mechanoluminescent material, its preparation method, and its application in integrated sensing. Background Technology

[0002] Temperature and velocity are common and critical physical indicators, serving as important monitoring parameters during the high-speed operation of precision instruments and large machinery. Real-time monitoring of the temperature and velocity of bearing components to prevent damage and accidents caused by overheating and overspeeding is a key concern in experimental research, transportation, and industrial manufacturing. However, current temperature and velocity data acquisition mostly relies on two independent sensing systems, requiring separate detection and algorithm analysis. With technological advancements, the demand for sensing technologies has greatly increased, making simple and integrated sensor devices and monitoring methods the primary goal.

[0003] Traditional resistive and capacitive sensors using electronic signals are susceptible to electromagnetic interference, stray capacitance, and thermal interference. Therefore, providing stable new sensing methods has become a pressing technical challenge. Mecoluminescent materials are a class of intelligent sensing materials that emit photons upon mechanical stimulation. Stress sensors based on mecoluminescent materials have gained widespread attention and application due to their advantages such as not requiring power and low power consumption. However, currently, mecoluminescent materials are almost exclusively used in stress sensing. In a few cases, temperature sensing is achieved through additional excitation sources and algorithms involving up / down conversion of light emission, requiring separate systems for stress detection. These limitations hinder the application of mecoluminescent materials in real-world scenarios.

[0004] Therefore, how to provide a mechanoluminescent material and its preparation method so that it can be applied to integrated sensing is a technical problem that urgently needs to be solved. Summary of the Invention

[0005] The present invention aims to at least solve one of the technical problems existing in the related art. Therefore, the first objective of the present invention is to provide a mechanoluminescent material; the second objective is to provide a method for preparing the mechanoluminescent material; and the third objective is to provide an application of the mechanoluminescent material in integrated sensing.

[0006] To achieve the first objective, the technical solution adopted by this invention is as follows:

[0007] A mechanoluminescent material, wherein the chemical formula of the mechanoluminescent material is: Cs3GdGe3O9:xTb 3+ ,yEu 3+ ,zNa + ;

[0008] Among them, Tb in the chemical expression3+ Cs3GdGe3O9 (abbreviated as CGGO) is used as the activator, and Eu is used as the matrix. 3+ Provides a second luminescent center, via Na + For Cs + The content and distribution of defect energy levels are regulated by substitution to achieve tunable color of the mechanoluminescent material;

[0009] In terms of molar percentage: 0 < x < 0.5, 0 ≤ y < 0.5, 0 ≤ z < 0.5.

[0010] Furthermore, 0.01 ≤ x ≤ 0.15.

[0011] Furthermore, 0 ≤ y ≤ 0.20.

[0012] Furthermore, 0 ≤ z ≤ 0.20.

[0013] The second objective of this invention is to provide a method for preparing a mechanoluminescent material;

[0014] A method for preparing a mechanoluminescent material, comprising the following steps:

[0015] S100. Weigh the raw materials according to the stoichiometric ratio, grind and mix them evenly in a mortar to obtain the first mixed powder;

[0016] S200. After transferring the first mixed powder to a crucible, place it in a muffle furnace and preheat it to 500℃~600℃ under air conditions. After holding it at that temperature for 12h~24h, cool it to room temperature to obtain the second mixed powder.

[0017] S300. After grinding the second mixed powder evenly in a mortar, transfer it to a crucible, place it in a muffle furnace, and heat it to 1000℃~1150℃ under air conditions at a heating rate of 1℃ / min~5℃ / min. After holding the temperature and sintering reaction for 12h~24h, cool it to room temperature to obtain a bulk mechanoluminescent material.

[0018] Furthermore, it also includes:

[0019] S400. Grind the blocky mechanoluminescent material evenly to obtain mechanoluminescent material powder.

[0020] Furthermore, both the mortars in S100 and S300 are agate mortars.

[0021] To achieve the third objective, the technical solution adopted by this invention is as follows:

[0022] An application of a mechanoluminescent material in integrated sensing, wherein the mechanoluminescent material is the aforementioned mechanoluminescent material.

[0023] Furthermore, the applications include monitoring the rotational speed and surface temperature of rotating objects.

[0024] Furthermore, the applications include monitoring the rotational speed of rotating objects and ambient temperature.

[0025] The above-described one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects:

[0026] The mechanoluminescent material Cs3GdGe3O9:xTb provided by this invention 3+ ,yEu 3+ ,zNa + (Abbreviated as CGGTEN), in monochromatic mechanoluminescent phosphor Cs3GdGe3O9:xTb 3+ (abbreviated: CGGT) utilizes lanthanide ions Eu 3+ The co-doping introduces a second characteristic emission band and cation Na + The substitution method has advantages and disadvantages, and the color of mechanoluminescence can be adjusted. The control method is simple and the effect can be effectively adjusted by the doping concentration.

[0027] Analysis of the temperature response and sensitivity of CGGTEN, as well as its velocity response and confidence interval, reveals that CGGTEN possesses excellent thermosensitive mechanoluminescence color-changing properties, exhibiting outstanding sensing capabilities. The significant color change in mechanoluminescence demonstrates the visibility of temperature variations, allowing for simultaneous velocity and temperature monitoring, and showcasing extremely high temperature sensitivity. Furthermore, the mechanoluminescence is linearly correlated with friction velocity. Therefore, the mechanoluminescent material provided by this invention has the potential for temperature and velocity sensing and is expected to find applications in integrated sensing.

[0028] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0029] Figure 1 These are the X-ray diffraction spectra of the matrix powder provided in Example 1 of the present invention and the mechanoluminescent material powder provided in Examples 2 to 6.

[0030] Figure 2 This is a mechanoluminescence spectrum of the mechanoluminescent material provided in Embodiment 3 of the present invention under the impact of small balls falling freely from different heights.

[0031] Figure 3 These are the X-ray diffraction spectra and matrix powder diffraction cards (PDFs) of the mechanoluminescent material powder provided in Examples 7 to 12 of this invention.

[0032] Figure 4 These are the mechanoluminescence spectra of the mechanoluminescent materials provided in Embodiments 7 to 12 of the present invention under the same impact force.

[0033] Figure 5 These are the mechanoluminescence chromaticity coordinate diagrams of the mechanoluminescent materials provided in Embodiments 7 to 12 of the present invention under the same impact force.

[0034] Figure 6 This is a three-dimensional projection image of the mechanoluminescence material at different temperatures provided in Embodiment 9 of the present invention.

[0035] Figure 7 These are the mechanoluminescence spectra of the mechanoluminescent material provided in Embodiment 9 of the present invention at different temperatures.

[0036] Figure 8 The temperature-dependent mechanoluminescence intensity of the mechanoluminescent material provided in Embodiment 9 of the present invention is measured at wavelengths of 612 nm and 550 nm.

[0037] Figure 9 This is a mechanoluminescent chromaticity coordinate diagram of the mechanoluminescent material at different temperatures provided in Embodiment 9 of the present invention.

[0038] Figure 10 This is a graph showing the relationship between the fluorescence intensity ratio and temperature of the mechanoluminescent material provided in Embodiment 9 of the present invention.

[0039] Figure 11 This relates the absolute and relative sensitivity of the mechanoluminescent material provided in Embodiment 9 of the present invention to temperature.

[0040] Figure 12 This is a mechanoluminescence spectrum of the mechanoluminescent material provided in Embodiment 9 of the present invention at different rotation speeds.

[0041] Figure 13 This is a graph showing the relationship between the mechanoluminescence intensity and rotation speed of the mechanoluminescent material provided in Embodiment 9 of the present invention, along with a linear analysis.

[0042] Figure 14 This is a schematic diagram illustrating two application scenarios for simultaneous monitoring of temperature and speed provided in embodiments of the present invention. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention. The following embodiments are used to illustrate this invention, but cannot be used to limit the scope of this invention.

[0044] In the following examples, unless otherwise specified, the experimental methods used are conventional methods, and the materials and reagents used are commercially available unless otherwise specified.

[0045] A mechanoluminescent material, wherein the chemical formula of the mechanoluminescent material is: Cs3GdGe3O9:xTb 3+ ,yEu 3+ ,zNa + ;

[0046] Among them, Tb in the chemical expression 3+ Cs3GdGe3O9 (abbreviated as CGGO) is used as the activator, and Eu is used as the matrix. 3+ Provides a second luminescent center, via Na + For Cs + The content and distribution of defect energy levels are regulated by substitution to achieve tunable color of the mechanoluminescent material;

[0047] In terms of molar percentage: 0 < x < 0.5, 0 ≤ y < 0.5, 0 ≤ z < 0.5.

[0048] According to a specific embodiment of the present invention, 0.01 ≤ x ≤ 0.15.

[0049] According to a specific embodiment of the present invention, 0 ≤ y ≤ 0.20.

[0050] According to a specific embodiment of the present invention, 0 ≤ z ≤ 0.20.

[0051] A method for preparing a mechanoluminescent material includes the following steps:

[0052] S100. Weigh the raw materials according to the stoichiometric ratio, grind and mix them evenly in a mortar to obtain the first mixed powder;

[0053] S200. After transferring the first mixed powder to a crucible, place it in a muffle furnace and preheat it to 500℃~600℃ under air conditions. After holding it at that temperature for 12h~24h, cool it to room temperature to obtain the second mixed powder.

[0054] S300. After grinding the second mixed powder evenly in a mortar, transfer it to a crucible, place it in a muffle furnace, and heat it to 1000℃~1150℃ under air conditions at a heating rate of 1℃ / min~5℃ / min. After holding the temperature and sintering reaction for 12h~24h, cool it to room temperature to obtain a bulk mechanoluminescent material.

[0055] According to a specific embodiment of the present invention, the method further includes the following steps:

[0056] S400. Grind the blocky mechanoluminescent material evenly to obtain mechanoluminescent material powder.

[0057] The present invention will be further described below with reference to specific embodiments.

[0058] Example 1: Preparation of Cs3GdGe3O9.

[0059] Includes the following steps:

[0060] S100, weigh 1.49g of cesium carbonate, 0.55g of gadolinium oxide and 0.96g of germanium oxide, grind them thoroughly in an agate mortar and mix them evenly to obtain the first mixed powder;

[0061] S200. The first mixed powder is transferred to a corundum crucible, placed in a muffle furnace, preheated to 600°C under air conditions, held for 12 hours, and then cooled to room temperature to obtain the second mixed powder.

[0062] S300. After grinding the second mixed powder evenly in an agate mortar, it is transferred to a crucible and placed in a muffle furnace. Under air conditions, the temperature is raised to 1000℃ at a heating rate of 5℃ / min. After holding the temperature and sintering reaction for 12 hours, it is cooled to room temperature to obtain a blocky mechanoluminescent material.

[0063] S400. Grind the mechanoluminescent material evenly to obtain stress-luminescent material powder.

[0064] Example 2 Cs3GdGe3O9:0.01Tb 3+ Preparation of .

[0065] Cs3GdGe3O9:0.01Tb 3+ The preparation process is basically the same as in Example 1, except that the composition of the raw materials in S100 is different. The raw material composition in this example is: 1.49g of cesium carbonate, 0.55g of gadolinium oxide, 0.96g of germanium oxide and 0.006g of tetraterbium heptaoxide. The remaining steps are the same as in Example 1.

[0066] Example 3: Cs3GdGe3O9:0.03Tb 3+ Preparation of .

[0067] Cs3GdGe3O9:0.03Tb 3+ The preparation process is basically the same as in Example 1, except that the composition of the raw materials in S100 is different. The raw material composition in this example is: 1.49g of cesium carbonate, 0.54g of gadolinium oxide, 0.96g of germanium oxide and 0.017g of tetraterbium heptaoxide. The remaining steps are the same as in Example 1.

[0068] Example 4: Cs3GdGe3O9:0.07Tb 3+ Preparation of .

[0069] Cs3GdGe3O9:0.07Tb 3+ The preparation process is basically the same as in Example 1, except that the composition of the raw materials in S100 is different. The raw material composition in this example is: 1.49g of cesium carbonate, 0.51g of gadolinium oxide, 0.96g of germanium oxide and 0.040g of tetraterbium heptaoxide. The remaining steps are the same as in Example 1.

[0070] Example 5: Cs3GdGe3O9:0.11Tb 3+ Preparation of .

[0071] Cs3GdGe3O9:0.11Tb 3+ The preparation process is basically the same as in Example 1, except that the composition of the raw materials in S100 is different. The raw material composition in this example is: 1.49g of cesium carbonate, 0.50g of gadolinium oxide, 0.96g of germanium oxide and 0.063g of tetraterbium heptaoxide. The remaining steps are the same as in Example 1.

[0072] Example 6: Cs3GdGe3O9:0.15Tb 3+ Preparation of .

[0073] Cs3GdGe3O9:0.15Tb 3+ The preparation process is basically the same as in Example 1, except that the composition of the raw materials in S100 is different. The raw material composition in this example is: 1.49g of cesium carbonate, 0.47g of gadolinium oxide, 0.96g of germanium oxide and 0.085g of tetraterbium heptaoxide. The remaining steps are the same as in Example 1.

[0074] Example 7 Cs3GdGe3O9:0.03Tb 3+ 0.1Na + Preparation of .

[0075] Cs3GdGe3O9:0.03Tb 3+ 0.1Na + The preparation process is basically the same as in Example 1, except that the composition of the raw materials in S100 is different. The raw material composition of this example is: 1.54g of cesium carbonate, 0.55g of gadolinium oxide, 0.99g of germanium oxide, 0.018g of terbium heptoxide and 0.017g of sodium carbonate. The remaining steps are the same as in Example 1.

[0076] Example 8: Cs3GdGe3O9:0.03Tb 3+ 0.005Eu 3+ 0.1Na + Preparation of .

[0077] Cs3GdGe3O9:0.03Tb3+ 0.005Eu 3+ 0.1Na + The preparation process is basically the same as in Example 1, except that the composition of the raw materials in S100 is different. The raw material composition in this example is: 1.54g of cesium carbonate, 0.55g of gadolinium oxide, 0.99g of germanium oxide, 0.018g of tetraterbium heptaoxide, 0.017g of sodium carbonate and 0.003g of europium oxide. The remaining steps are the same as in Example 1.

[0078] Example 9 Cs3GdGe3O9:0.03Tb 3+ 0.01Eu 3+ 0.1Na + Preparation of .

[0079] Cs3GdGe3O9:0.03Tb 3+ 0.01Eu 3+ 0.1Na + The preparation process is basically the same as in Example 1, except that the composition of the raw materials in S100 is different. The raw material composition of this example is: 1.54g of cesium carbonate, 0.55g of gadolinium oxide, 0.99g of germanium oxide, 0.018g of tetraterbium heptaoxide, 0.017g of sodium carbonate and 0.006g of europium oxide. The remaining steps are the same as in Example 1.

[0080] Example 10 Cs3GdGe3O9:0.03Tb 3+ 0.03Eu 3+ 0.1Na + Preparation of .

[0081] Cs3GdGe3O9:0.03Tb 3+ 0.03Eu 3+ 0.1Na + The preparation process is basically the same as in Example 1, except that the composition of the raw materials in S100 is different. The raw material composition in this example is: 1.54g of cesium carbonate, 0.54g of gadolinium oxide, 0.99g of germanium oxide, 0.018g of tetraterbium heptaoxide, 0.017g of sodium carbonate and 0.017g of europium oxide. The remaining steps are the same as in Example 1.

[0082] Example 11 Cs3GdGe3O9:0.03Tb 3+ 0.06Eu 3+ 0.1Na + Preparation of .

[0083] Cs3GdGe3O9:0.03Tb 3+ 0.06Eu 3+ 0.1Na +The preparation process is basically the same as in Example 1, except that the composition of the raw materials in S100 is different. The raw material composition in this example is: 1.54g of cesium carbonate, 0.52g of gadolinium oxide, 0.99g of germanium oxide, 0.018g of tetraterbium heptaoxide, 0.017g of sodium carbonate and 0.033g of europium oxide. The remaining steps are the same as in Example 1.

[0084] Example 12 Cs3GdGe3O9:0.03Tb 3+ 0.2Eu 3+ 0.1Na + Preparation of .

[0085] Cs3GdGe3O9:0.03Tb 3+ 0.06Eu 3+ 0.1Na + The preparation process is basically the same as in Example 1, except that the composition of the raw materials in S100 is different. The raw material composition of this example is: 1.54g of cesium carbonate, 0.44g of gadolinium oxide, 0.99g of germanium oxide, 0.018g of tetraterbium heptaoxide, 0.017g of sodium carbonate and 0.111g of europium oxide. The remaining steps are the same as in Example 1.

[0086] The X-ray diffraction spectra of the matrix powder provided in Example 1 and the mechanoluminescent material powders provided in Examples 2 to 6 of this invention are as follows: Figure 1 As shown, the results indicate that there are no obvious impurities in the mechanoluminescent materials provided in Examples 2 to 6.

[0087] The mechanoluminescent material provided in Example 3 exhibits mechanoluminescence spectra under the impact of freely falling small balls at heights of 10cm, 20cm, 30cm, 40cm, and 50cm, as shown below. Figure 2 As shown.

[0088] Examples 7 to 12 provide X-ray diffraction (XRD) spectra of mechanoluminescent material powders and X-ray diffraction analysis (XRD) of matrix (CGGO) powders. Figure 3 As shown, the results indicate that the mechanoluminescent materials provided in Examples 7 to 12 have no obvious impurities;

[0089] Figure 4 , Figure 5 The results show that the mechanoluminescent materials provided in Examples 7 to 12 have elastic mechanoluminescence properties.

[0090] Figures 6 to 13 The results show that the mechanoluminescence intensity of the mechanoluminescence material provided by the present invention is linearly related to the rotation speed of the glass rod under applied stress and has temperature-sensitive mechanoluminescence color adjustment properties. The relationship between the rotation speed of the glass rod and the mechanoluminescence intensity is shown in Table 1.

[0091] Table 1

[0092]

[0093] Example 13 Application of the mechanoluminescent material provided by the present invention in temperature-speed sensing.

[0094] The block-shaped mechanoluminescence intensity provided in this embodiment of the invention increases with the speed of the glass rod, and the color changes from green to yellow as the temperature rises. The changes in speed and temperature are visually apparent through the alteration of the mechanoluminescence phenomenon and can be captured by a photosensitive coupling device: at room temperature, green mechanoluminescence appears where the sample contacts the glass rod or needle-like object; increasing the rotation speed enhances the mechanoluminescence intensity. As the temperature rises from room temperature (25℃, 298K) to 125℃ (398K), the mechanoluminescence color continuously changes from green to yellow. The light signal received by the photosensitive coupling device can be used to collect the mechanoluminescence spectrum on a computer for precise analysis: the spectral intensity corresponds to the rotation speed (data processing and analysis methods are as follows). Figure 12 and Figure 13 As shown), the ratio of the spectral peak intensities at 612 nm and 550 nm in the spectrum, I 550 nm / I 612 nm, corresponds to the temperature (data processing and analysis methods are as follows). Figure 10 (As shown). Based on this, two application scenarios for simultaneous monitoring of temperature and speed are designed, and the application scenario diagrams are shown below. Figure 14 As shown.

[0095] 1. Real-time monitoring of the rotational speed and surface temperature of rotating objects.

[0096] The bulk mechanoluminescent material obtained in any of Examples 7 to 12 (S300) is adhered to the rotating central axis of the object. After pre-irradiation with a 254nm ultraviolet lamp, one end of a glass rod or needle is fixed to the upper surface of the sample. After the object begins to rotate, the speed and temperature changes can be intuitively judged by the visible changes in the brightness and color of the mechanoluminescence; the rotational speed and surface temperature of the rotating object can be accurately obtained by using the changes in spectral intensity and the ratio of the intensity of the mechanoluminescence bipeaks.

[0097] 2. Real-time monitoring of the rotational speed of rotating objects and ambient temperature.

[0098] The blocky mechanoluminescent material obtained in any of Examples 7 to 12, S300, is fixed onto a support plate. A glass rod or needle fixed to the surface of the object is brought into contact with the surface of the mechanoluminescent material. When the object begins to rotate, the changes in the brightness and color of the mechanoluminescence visible to the naked eye can be used to intuitively determine the changes in the object's rotation speed and the ambient temperature; the changes in spectral intensity and the ratio of the intensity of the mechanoluminescence bipeaks can be used to accurately obtain the rotation speed of the rotating object and the ambient temperature.

[0099] According to the preparation process provided by the present invention, the traditional high-temperature solid-state reaction method is used for preparation, which is sintered under air conditions. The preparation process is simple, the reaction conditions are controllable, there is no pollution to the environment, and no harmful substances are generated during the preparation process.

[0100] The mechanoluminescent material provided by this invention utilizes lanthanide ions Eu in the monochromatic mechanoluminescent phosphor CGGT. 3+ The co-doping introduces a second characteristic emission band and cation Na + The substitution of dopant to control the defects can be used to achieve adjustable mechanoluminescence color of mechanoluminescent materials. The control method is simple and the effect can be effectively adjusted by the doping concentration.

[0101] The thermosensitive mechanoluminescent chromatic phosphor CGGTEN provided by this invention possesses excellent thermosensitive mechanoluminescent color-changing properties, exhibiting outstanding sensing capabilities. For example, the mechanoluminescent color change is significant, revealing visible temperature changes, allowing for simultaneous speed and temperature monitoring, and demonstrating extremely high temperature sensitivity. Its relative sensitivity is close to the highest level of most thermosensitive photoluminescent materials, and the mechanoluminescence of this material is linearly correlated with the friction speed. Therefore, the mechanoluminescent material provided by this invention has the potential for temperature and speed sensing.

[0102] This invention provides two application scenarios for simultaneous temperature and velocity measurement based on CGGTEN. The first is a sensing method that uses mechanoluminescence intensity ratio and color visualization to monitor the temperature of an object's surface and the environment, with clear color changes. Simultaneously, it monitors the rotational speed of an object based on changes in mechanoluminescence intensity. This application design, through the high sensitivity of CGGTEN's mechanoluminescence color to temperature and its linear correlation with rotational speed, achieves, for the first time, quantitative and visualized integrated temperature-velocity sensing.

[0103] The above application design avoids the current dual-system detection and algorithms. By generating stress luminescence signals in a single unit, it realizes mechanical sensing with both temperature and speed responses, which can promote further algorithm analysis and device integration, and provides a new approach for future integrated detection with multiple functions.

[0104] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A mechanoluminescent material, characterized in that, The chemical formula of the mechanoluminescent material is: Cs3GdGe3O9:xTb 3+ ,yEu 3+ ,zNa + ; Among them, Tb in the chemical expression 3+ As the activator, Cs3GdGe3O9 is the matrix, and Eu is used as the activator. 3+ Provides a second luminescent center, via Na + For Cs + The content and distribution of defect energy levels are regulated by substitution to achieve tunable color of the mechanoluminescent material; In terms of molar percentage: 0.01≤x≤0.15, 0≤y≤0.2, 0.1≤z≤0.

20.

2. A method for preparing a mechanoluminescent material, characterized in that, The method for preparing the mechanoluminescent material as described in claim 1 comprises the following steps: S100. Weigh the raw materials according to the stoichiometric ratio, grind and mix them evenly in a mortar to obtain the first mixed powder; S200. After transferring the first mixed powder to a crucible, place it in a muffle furnace and preheat it to 500℃~600℃ under air conditions. After holding it at that temperature for 12h~24h, cool it to room temperature to obtain the second mixed powder. S300. After grinding the second mixed powder evenly in a mortar, transfer it to a crucible, place it in a muffle furnace, and heat it to 1000℃~1150℃ under air conditions at a heating rate of 1℃ / min~5℃ / min. After holding the temperature and sintering reaction for 12h~24h, cool it to room temperature to obtain a blocky mechanoluminescent material.

3. The method for preparing a mechanoluminescent material as described in claim 2, characterized in that, It also includes the following steps: S400. Grind the blocky mechanoluminescent material evenly to obtain mechanoluminescent material powder.

4. The method for preparing a mechanoluminescent material as described in claim 2, characterized in that, Both the mortars in S100 and S300 are made of agate.

5. An application of a mechanoluminescent material in integrated sensing, characterized in that, The mechanoluminescent material is the mechanoluminescent material as described in claim 1.

6. The application of a mechanoluminescent material as described in claim 5 in integrated sensing, characterized in that, The applications include monitoring the rotational speed and surface temperature of rotating objects.

7. The application of a mechanoluminescent material as described in claim 5 in integrated sensing, characterized in that, The applications include monitoring the rotational speed of rotating objects and ambient temperature.

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