Method and device for measuring rheological property of high-solid-content solid-liquid system and product

Abstract

The invention discloses a rheological property measurement method and device for a high-solid-content solid-liquid system and a product, and relates to the technical field of rheological property measurement of solid-liquid systems.The measurement method comprises the steps that firstly, the density of the high-solid-content solid-liquid system is obtained; obtaining experimental data of a high-solid-content solid-liquid system flow experiment; the high-solid-content solid-liquid system flow experiment is an experiment that the high-solid-content solid-liquid system freely flows on a slope surface of a slope device; inputting the density of the high-solid-content solid-liquid system and the experimental data into a slope flow formula, and calculating a consistency coefficient and a power law index of the high-solid-content solid-liquid system by using a graphical method; and finally, determining the rheological property of the high-solid-content solid-liquid system according to the consistency coefficient and the power law index. According to the method, the solid-liquid system can keep small deformation in the flowing process, and the influence of wall surface slippage and particle migration can be ignored, so that the rheological property of the high-solid-content solid-liquid system can be accurately measured.

Description

Technical Field

[0001] The present application relates to the technical field of rheological measurement of solid-liquid systems, and in particular to a method, device and product for measuring the rheological properties of high-solid content solid-liquid systems. Background Art

[0002] Solid-liquid system is a heterogeneous system composed of particles and liquids, which is widely found in nature, such as debris flow, landslide and beach bunkers, industrial manufacturing, such as lithium battery electrode slurry, coating and water-coal slurry, food, such as jam, cosmetics and construction, such as cement. The rheology of solid-liquid system is an important basic physical property that determines its processing performance, product quality and equipment development.

[0003] Usually, the rheological properties of a fluid can be obtained through rheometer testing. However, since the solid-liquid system contains particles, especially when the solid content exceeds a certain value (particle volume fraction is greater than or equal to 0.2), using a rheometer to perform rheological testing on the solid-liquid system will cause wall slip, particle migration and other phenomena, resulting in serious distortion of the test results. Summary of the invention

[0004] The purpose of this application is to provide a method, device and product for measuring the rheological properties of a high-solid content solid-liquid system, which can enable the solid-liquid system to maintain a small deformation during the flow process, and thus ignore the influence of wall slip and particle migration, thereby accurately measuring the rheological properties of a high-solid content solid-liquid system.

[0005] To achieve the above objectives, this application provides the following solutions:

[0006] In a first aspect, the present application provides a method for measuring the rheological properties of a high solid content solid-liquid system, the method comprising:

[0007] Obtain the density of a high solid content solid-liquid system;

[0008] Acquire experimental data of a high-solid content solid-liquid system flow experiment; the high-solid content solid-liquid system flow experiment is an experiment in which the high-solid content solid-liquid system flows freely on the slope surface of a slope device; the experimental data include: surface flow velocity and thickness measurement values ​​of the high-solid content solid-liquid system at several different slope inclination angles;

[0009] The density of the high-solid content solid-liquid system and the experimental data are input into a slope flow formula, and the consistency coefficient and power law index of the high-solid content solid-liquid system are calculated by a graphical method; the slope flow formula is a functional relationship formula between the surface flow velocity, thickness, slope inclination angle, consistency coefficient and power law index of the solid-liquid system; the slope flow formula is determined by a momentum equation and a power law model;

[0010] The rheological property of the high solid content solid-liquid system is determined according to the consistency coefficient and the power law index.

[0011] Optionally, the slope flow formula is:

[0012]

[0013] Among them, u(h) represents the surface flow velocity of the solid-liquid system, K represents the consistency coefficient of the solid-liquid system, n represents the power law exponent of the solid-liquid system, ρ represents the density of the solid-liquid system, g is the gravitational acceleration, θ represents the inclination angle of the inclined plane, and h represents the thickness of the solid-liquid system.

[0014] Optionally, the density of the high solid content solid-liquid system and the experimental data are input into the slope flow formula, and the consistency coefficient and power law index of the high solid content solid-liquid system are calculated by a graphical method, specifically including:

[0015] The density of the high solid content solid-liquid system and the experimental data are input into the slope flow formula, and a function is called in MATLAB software to calculate the consistency coefficient and power law index of the high solid content solid-liquid system using a graphical method.

[0016] Optionally, determining the rheological properties of the high solid content solid-liquid system according to the consistency coefficient and the power law index specifically includes:

[0017] Get the experimental temperature;

[0018] The rheological property of the high solid content solid-liquid system at the experimental temperature is determined according to the consistency coefficient and the power law index.

[0019] Optionally, the high solid content solid-liquid system is a solid-liquid system with a particle volume fraction greater than 0.2.

[0020] In a second aspect, the present application provides a rheological measurement device for a high solid content solid-liquid system, the rheological measurement device for a high solid content solid-liquid system comprising: a data acquisition module, a ramp device and a data processing module;

[0021] The data acquisition module is used to:

[0022] Obtain the density of a high solid content solid-liquid system;

[0023] Acquire experimental data of a high-solid content solid-liquid system flow experiment; the high-solid content solid-liquid system flow experiment is an experiment in which the high-solid content solid-liquid system flows freely on the slope surface of a slope device; the experimental data include: surface flow velocity and thickness measurement values ​​of the high-solid content solid-liquid system at several different slope inclination angles;

[0024] The data processing module is used to:

[0025] The density of the high-solid content solid-liquid system and the experimental data are input into a slope flow formula, and the consistency coefficient and power law index of the high-solid content solid-liquid system are calculated by a graphical method; the slope flow formula is a functional relationship formula between the surface flow velocity, thickness, slope inclination angle, consistency coefficient and power law index of the solid-liquid system; the slope flow formula is determined by a momentum equation and a power law model;

[0026] Determining the rheological properties of the high solid content solid-liquid system according to the consistency coefficient and the power law index;

[0027] The slope device comprises: a slope surface, a shading sheet, a displacement sensor and a flat base; the shading sheet and the displacement sensor are arranged directly above the slope surface; the flat base is movably connected to the slope surface; the slope inclination angle of the slope surface can be changed;

[0028] The displacement sensor is used to record the thickness and corresponding time of the high solid content solid-liquid system flowing through the slope surface.

[0029] Optionally, the ramp device further comprises: a hopper trough;

[0030] The hopper trough is arranged at one end of the slope surface;

[0031] The hopper trough is provided with a gate;

[0032] The gate is used to control the high-solid content solid-liquid system to flow from the hopper tank to the slope surface.

[0033] In a third aspect, the present application provides a computer device comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement any of the above-described methods for measuring the rheological properties of a high-solid content solid-liquid system.

[0034] In a fourth aspect, the present application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements any of the above-described methods for measuring the rheological properties of a high-solid content solid-liquid system.

[0035] In a fifth aspect, the present application provides a computer program product, including a computer program, which, when executed by a processor, implements any of the above-mentioned methods for measuring the rheological properties of a high-solid content solid-liquid system.

[0036] According to the specific embodiments provided in this application, this application discloses the following technical effects:

[0037] The present application provides a method, device and product for measuring the rheological properties of a high-solid content solid-liquid system. The measuring method first obtains the density of the high-solid content solid-liquid system; obtains experimental data of a flow experiment of the high-solid content solid-liquid system; the flow experiment of the high-solid content solid-liquid system is an experiment in which the high-solid content solid-liquid system flows freely on the slope surface of a slope device; the experimental data include: surface flow velocity and thickness measurement values ​​of the high-solid content solid-liquid system at several different slope inclination angles; the density of the high-solid content solid-liquid system and the experimental data are input into a slope flow formula, and the consistency coefficient and power law index of the high-solid content solid-liquid system are calculated using a graphical method; finally, the rheological properties of the high-solid content solid-liquid system are determined based on the consistency coefficient and the power law index. In the prior art, when using a rheometer to perform rheological tests on solid-liquid systems, phenomena such as wall slip and particle migration will occur, resulting in serious distortion of the test results. However, in this application, experimental data of the free flow of a high-solid-content solid-liquid system on a slope surface is obtained. When the solid-liquid system flows freely on the slope surface, since its surface is a free surface, the normal stress on its surface is zero, so that the solid-liquid system maintains a small deformation during the flow process, and the influence of wall slip and particle migration can be ignored. Therefore, this application can keep the solid-liquid system in a small deformation during the flow process, and the influence of wall slip and particle migration can be ignored, thereby accurately measuring the rheology of a high-solid-content solid-liquid system. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0039] Figure 1 An application environment diagram of a rheological property measurement method for a high solid content solid-liquid system provided in an embodiment of the present application;

[0040] Figure 2 A schematic flow chart of a method for measuring the rheological properties of a high-solid-content solid-liquid system provided in Example 1 of the present application;

[0041] Figure 3 A schematic diagram of a ramp device provided in Example 1 of the present application;

[0042] Figure 4 A schematic flow chart of a method for measuring the rheological properties of a high-solid-content solid-liquid system provided in Example 3 of the present application;

[0043] Figure 5 A schematic diagram of the structure of a computer device provided in one embodiment of the present application. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0045] Based on the slope flow of solid-liquid systems, this application develops a new rheological test method, especially for high-solid content solid-liquid systems, to accurately measure the rheological properties of high-solid content solid-liquid systems, thereby providing basic physical properties for equipment development and process intensification.

[0046] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0047] The rheological property measurement method of the high solid content solid-liquid system provided in the embodiment of the present application can be applied to Figure 1In the application environment shown, the terminal 102 communicates with the server 104 through a network. The data storage system can store data that the server 104 needs to process. The data storage system can be set up separately, integrated on the server 104, or placed on the cloud or other servers. The terminal 102 can send the density and experimental data to be processed to the server 104. After receiving the density and experimental data to be processed, the server 104 obtains the density of the high-solid content solid-liquid system; obtains the experimental data of the flow experiment of the high-solid content solid-liquid system; the flow experiment of the high-solid content solid-liquid system is an experiment of the free flow of the high-solid content solid-liquid system on the slope surface of the slope device; the experimental data include: surface flow velocity and thickness measurement values ​​of the high-solid content solid-liquid system at several different slope inclination angles; the density of the high-solid content solid-liquid system and the experimental data are input into the slope flow formula, and the consistency coefficient and power law index of the high-solid content solid-liquid system are calculated by graphical method; the slope flow formula is a functional relationship formula between the surface flow velocity, thickness, slope inclination angle, consistency coefficient and power law index of the solid-liquid system; the slope flow formula is determined by the momentum equation and the power law model; the rheological properties of the high-solid content solid-liquid system are determined according to the consistency coefficient and the power law index. The server 104 can feed back the obtained rheological properties of the high solid content solid-liquid system to the terminal 102. In addition, in some embodiments, the rheological property measurement method of the high solid content solid-liquid system can also be implemented by the server 104 or the terminal 102 alone, such as the terminal 102 can directly process the density and experimental data to be processed, or the server 104 can obtain the density and experimental data to be processed from the data storage system and process them.

[0048] The terminal 102 may be, but is not limited to, various desktop computers, laptop computers, smart phones, tablet computers, IoT devices, and portable wearable devices. The IoT devices may be smart speakers, smart TVs, smart air conditioners, smart vehicle-mounted devices, etc. The portable wearable devices may be smart watches, smart bracelets, head-mounted devices, etc. The server 104 may be implemented as an independent server or a server cluster consisting of multiple servers, or may be a cloud server.

[0049] Embodiment 1:

[0050] In an exemplary embodiment, Figure 2 As shown, a method for measuring the rheological properties of a high solid content solid-liquid system is provided. The method is executed by a computer device, and can be executed by a computer device such as a terminal or a server alone, or by a terminal and a server together. In the embodiment of the present application, the method is applied to Figure 1 The server 104 in the example is used as an example to illustrate the method, which includes the following steps S1 to S4. Among them:

[0051] S1. Obtain the density of a high solid content solid-liquid system. The high solid content solid-liquid system in this embodiment is a solid-liquid system in which the particle volume fraction is greater than 0.2. In the high solid content solid-liquid system, the particle density is close to the liquid density.

[0052] S2. Acquire experimental data of a high solid content solid-liquid system flow experiment; the high solid content solid-liquid system flow experiment is an experiment in which the high solid content solid-liquid system flows freely on the slope surface of a ramp device; the experimental data include: surface flow velocity and thickness measurement values ​​of the high solid content solid-liquid system at several different slope inclination angles. Figure 3 The ramp device in this embodiment needs to have a smooth ramp surface.

[0053] In this embodiment, a slope device is used to carry out a flow experiment of a high-solid content solid-liquid system with a certain amount of medicine, and the experimental temperature is recorded; the slope device includes a slope flow channel of a certain size, a shading sheet and a laser displacement sensor; the slope flow channel is composed of a slope surface, a stainless steel flat base and a hopper trough; the slope surface is connected to the stainless steel flat base through a loose-leaf, so that the slope angle can be adjusted; the hopper trough is welded at one end of the slope flow channel, and the hopper trough has a gate that can be pulled up and down, so that the medicine to be tested can flow from the trough to the slope surface; the shading sheet has a negligible weight, a certain size and a thickness of h2; when the front end of the medicine to be tested (the medicine to be tested in this embodiment is a high-solid content solid-liquid system) flows out of the slope surface, there is The relevant personnel place the shading sheet on the surface of the drug to be tested that has not yet flowed through the laser displacement sensor, and the distance between the placement site and the laser emitted by the laser displacement sensor is kept constant; the laser displacement sensor is installed directly above the slope surface through a bracket; the laser displacement sensor can simultaneously record the thickness and time; when there is no drug to be tested on the slope, the reading of the laser displacement sensor is h0, which is the distance between the laser source and the slope, and when the drug to be tested covered with the shading sheet flows through the laser displacement sensor, the reading of the laser displacement sensor is h1, which is the distance between the laser source and the shading sheet; the laser displacement sensor and the shading sheet can then be used to measure the thickness of the drug to be tested at the same site and at different slope inclination angles (θ1, θ2). In the formula, and are the distance between the laser source and the slope and the distance between the laser source and the light shielding sheet at the measurement point when the slope inclination angle is θ1; and are the distance between the laser source and the inclined plane and the distance between the laser source and the light shielding sheet at the measurement position when the slope inclination angle is θ2; the measurement position is selected at half the width of the inclined plane and a certain distance from the end of the inclined plane; h2 is the thickness of the light shielding sheet), and according to the light shielding sheet width Δx and the residence time of the laser emitted by the laser displacement sensor on the light shielding sheet Calculate the surface flow rate of the drug to be tested at the same location and different slope angles (θ1, θ2) in

[0054] S3. Input the density of the high-solid content solid-liquid system and the experimental data into the slope flow formula, and use a graphical method to calculate the consistency coefficient and power law index of the high-solid content solid-liquid system; the slope flow formula is a functional relationship formula between the surface flow velocity, thickness, slope inclination, consistency coefficient and power law index of the solid-liquid system; the slope flow formula is determined by the momentum equation and the power law model.

[0055] This embodiment derives the analytical solution of the solid-liquid system flowing on an inclined plane with an inclination angle of θ under certain boundary conditions based on appropriately simplified momentum equations and power law models, as shown in the following formula, and obtains the functional relationship between the surface velocity u(h), thickness h, inclined plane inclination angle θ, consistency coefficient K and power law index n of the solid-liquid system. In the formula, ρ is the density of the solid-liquid system, kg / m 3 .

[0056]

[0057] Among them, u(h) represents the surface flow velocity of the solid-liquid system, K represents the consistency coefficient of the solid-liquid system, n represents the power law exponent of the solid-liquid system, ρ represents the density of the solid-liquid system, g is the gravitational acceleration, θ represents the inclination angle of the inclined plane, and h represents the thickness of the solid-liquid system.

[0058] The density of the high solid content solid-liquid system and the experimental data are input into the slope flow formula, and a function is called in MATLAB software to calculate the consistency coefficient and power law index of the high solid content solid-liquid system using a graphical method.

[0059] S4. Determine the rheological properties of the high solid content solid-liquid system according to the consistency coefficient and the power law index.

[0060] In this embodiment, the experimental temperature is also obtained, the surface flow velocity and thickness measurement values ​​at different slope angles are substituted into the slope flow formula, and the consistency coefficient and power law index of the system to be tested are calculated by calling the relevant functions in the MATLAB software using a graphical method, thereby obtaining the rheological properties of the high solid content solid-liquid system at this temperature.

[0061] By implementing the above steps, the analytical solution of the solid-liquid system flowing on the slope is obtained through theoretical derivation, and the thickness and surface velocity of the high solid content solid-liquid system flowing on the slope are obtained through the slope flow experiment of the high solid content solid-liquid system. The surface velocity and thickness measurement values ​​at different slope inclination angles are substituted into the slope flow formula to calculate the consistency coefficient and power law index of the system to be tested at this temperature, thereby obtaining the rheological properties of the high solid content solid-liquid system. This method overcomes the influence of wall slip and particle migration when using conventional rheometers to measure the rheological properties of high solid content solid-liquid systems, and can accurately measure the rheological properties of high solid content solid-liquid systems, providing basic physical properties for equipment development and process intensification.

[0062] Embodiment 2:

[0063] In an exemplary embodiment, a rheological measurement device for a high solid content solid-liquid system is provided, the rheological measurement device for a high solid content solid-liquid system comprising: a data acquisition module, a ramp device and a data processing module;

[0064] The data acquisition module is used to:

[0065] Obtain the density of a high solid content solid-liquid system;

[0066] Acquire experimental data of a high-solid content solid-liquid system flow experiment; the high-solid content solid-liquid system flow experiment is an experiment in which the high-solid content solid-liquid system flows freely on the slope surface of a slope device; the experimental data include: surface flow velocity and thickness measurement values ​​of the high-solid content solid-liquid system at several different slope inclination angles.

[0067] The data processing module is used to:

[0068] The density of the high-solid content solid-liquid system and the experimental data are input into the slope flow formula, and the consistency coefficient and power law index of the high-solid content solid-liquid system are calculated using a graphical method; the slope flow formula is a functional relationship formula between the surface flow velocity, thickness, slope inclination angle, consistency coefficient and power law index of the solid-liquid system; the slope flow formula is determined by the momentum equation and the power law model.

[0069] Determining the rheological properties of the high solid content solid-liquid system according to the consistency coefficient and the power law index;

[0070] The slope device comprises: a slope surface, a shading sheet, a displacement sensor and a flat base; the shading sheet and the displacement sensor are arranged directly above the slope surface; the flat base is movably connected to the slope surface; the slope inclination angle of the slope surface can be changed;

[0071] The displacement sensor is used to record the thickness and corresponding time of the high solid content solid-liquid system flowing through the slope surface. The surface flow rate and thickness are calculated from the size of the light shielding sheet, the residence time of the laser emitted by the laser displacement sensor on the light shielding sheet, and the reading of the laser displacement sensor.

[0072] Wherein, the ramp device further comprises: a hopper trough;

[0073] The hopper trough is arranged at one end of the slope surface;

[0074] The hopper trough is provided with a gate;

[0075] The gate is used to control the high-solid content solid-liquid system to flow from the hopper tank to the slope surface.

[0076] Embodiment three:

[0077] In an exemplary embodiment, Figure 4 As shown, a method for measuring the rheological properties of a high solid content solid-liquid system is provided, which specifically includes:

[0078] Step 101: Based on the momentum equation and the power law model, the analytical solution of the solid-liquid system flowing on an inclined plane with an inclination angle of θ is derived, as shown in the following formula, and the functional relationship between the surface flow velocity u(h), thickness h, inclined plane inclination angle θ, consistency coefficient K and power law index n of the solid-liquid system is obtained, where ρ is the density of the solid-liquid system, kg / m 3 ;

[0079]

[0080] Step 102: Conduct a high-solid content solid-liquid system flow experiment using a slope device, measure the surface flow velocity and thickness of the high-solid content solid-liquid system at different slope angles, and record the experimental temperature.

[0081] Step 103: Substitute the surface velocity and thickness measurement values ​​at different slope angles into the above formula, and solve the consistency coefficient and power law index of the system to be tested, so as to obtain the rheological properties of the high solid content solid-liquid system at the temperature.

[0082] Among them, the analytical solution of the solid-liquid system flowing on the inclined plane is derived based on the momentum equation and the power law model, including:

[0083] Simplify the momentum equation appropriately;

[0084] Determine the boundary conditions for a solid-liquid system flowing down a slope.

[0085] Among them, the slope flow experiment of high solid content solid-liquid system was carried out through the slope device, including:

[0086] The experiment is intermittent, and the flow of the system to be tested (the system to be tested in this embodiment is a high solid content solid-liquid system) on the slope can be regarded as a pseudo-steady state.

[0087] Wherein, in the high solid content solid-liquid system, the particle volume fraction is greater than 0.2; in the high solid content solid-liquid system, the particle density is close to the liquid density;

[0088] Among them, a slope flow experiment of a high solid content solid-liquid system was carried out through a slope device to measure its surface flow velocity and thickness, including:

[0089] The ramp device includes a ramp flow channel, a shading sheet and a laser displacement sensor; the ramp flow channel consists of a ramp surface, a stainless steel flat base and a hopper trough; the ramp surface is connected to the stainless steel flat base through a loose-leaf, so that the slope angle can be adjusted; the hopper trough is welded at one end of the ramp flow channel, and the hopper trough is provided with a gate that can be pulled up and down, so that the drug to be tested can flow from the trough to the ramp surface; the size, slope inclination, measurement position of the ramp flow channel in the ramp device and the amount of drug used in the experiment are certain; the total length of the ramp flow channel is 0.7 to 1.5 m; the length of the hopper trough is 0.12 to 0.22 m; the width of the ramp flow channel and the hopper trough is 0.12 to 0.22 m; the height of the hopper trough is 0.15 to 0.22 m; the slope inclination is 10° to 45°; the distance between the measurement position and the ramp outlet is 0.3 to 0.5 m; the amount of drug is 0.8 to 1.7 L.

[0090] The surface flow velocity and thickness of the drug to be tested at the same position and different slope inclination angles are measured by using a laser displacement sensor and a shading sheet; the weight of the shading sheet can be ignored, the length is 0.025-0.05m, the width is 0.005-0.015m, and the thickness is 0.002-0.006m; when the front end of the drug to be tested flows out of the slope surface, the relevant personnel place the shading sheet on the surface of the drug to be tested that has not flowed through the laser displacement sensor, and the distance between the placement position and the laser emitted by the laser displacement sensor is 0.04-0.08m; the laser displacement sensor is installed directly above the slope surface through a bracket; the laser displacement sensor can record the thickness and time at the same time; the surface flow velocity and thickness of the drug to be tested are calculated by the size of the shading sheet, the residence time of the laser emitted by the laser displacement sensor on the shading sheet, and the reading of the laser displacement sensor;

[0091] Among them, the experimental values ​​of surface velocity and thickness at different slope angles are substituted into the formula to jointly solve the consistency coefficient and power law index of the system to be tested, including:

[0092] The relevant functions were called in MATLAB software, and the consistency coefficient and power law index of the system to be tested were calculated using a graphical method, thereby obtaining the rheological properties of the high solid content solid-liquid system.

[0093] Embodiment 4:

[0094] In another exemplary embodiment of the present application, in order to evaluate the accuracy of a method for measuring the rheological properties of a high solid content solid-liquid system, the method is used to measure the rheological properties of a low solid content solid-liquid system (ASA powder / terminated hydroxyl polybutadiene solid-liquid system with a particle volume fraction of less than 0.1, an average particle size of ASA powder of 165 μm, and a density of 1.1 g / cm 3 ; The density of hydroxyl-terminated polybutadiene is 0.913 g / cm 3 , the viscosity at 25°C is 17.15 Pa·s) and the rheological properties are measured, and the measurement results are compared with the values ​​measured by the rotational rheometer. Then the above steps 101 to 103 are replaced by steps 201 to 203:

[0095] Step 201: Based on the appropriately simplified momentum equation and the power law model, an analytical solution for the flow of a solid-liquid system on an inclined plane with an inclination angle of θ is derived under certain boundary conditions, as shown in the following formula, and the functional relationship between the surface velocity u(h), thickness h, inclined plane inclination angle θ, consistency coefficient K and power law index n of the solid-liquid system is obtained, where ρ is the density of the solid-liquid system, kg / m 3 .

[0096]

[0097] Step 202: Conduct a flow experiment of ASA powder / hydroxyl-terminated polybutadiene solid-liquid system with a drug volume of 0.8 to 1.7 L and a particle volume fraction of less than 0.1 by using a ramp device, and record the experimental temperature as 25°C; the ramp device includes a ramp flow channel of a certain size, a light shielding sheet and a laser displacement sensor; the ramp flow channel consists of a ramp surface, a stainless steel flat plate base and a hopper trough; the ramp surface is connected to the stainless steel flat plate base through a loose-leaf, so that the slope angle can be adjusted; the hopper trough is welded at one end of the ramp flow channel, and the hopper trough is provided with a gate that can be pulled up and down, so that the drug to be tested can flow from the trough to the ramp surface; the total length of the ramp flow channel is 0.7 to 1.5 m; the length of the hopper trough is 0.12 to 0.22 m; the width of the ramp flow channel and the hopper trough is 0.12 to 0.22 m; the height of the hopper trough is 0.15 to 0. 22m; the weight of the shading sheet can be ignored, the length is 0.025-0.05m, the width is 0.005-0.015m, and the thickness is 0.002-0.006m; when the front end of the drug to be tested flows out of the slope surface, the relevant personnel place the shading sheet on the surface of the drug to be tested that has not yet flowed through the laser displacement sensor, and the distance between the placement position and the laser emitted by the laser displacement sensor is 0.04-0.08m; the laser displacement sensor can simultaneously record the thickness and time; the laser displacement sensor and the shading sheet are used to measure the thickness of the drug to be tested when the distance is 0.3-0.5m from the slope exit and the slope inclination is 10°-45°, which is 0.008-0.015m, and the surface flow velocity of 0.004-0.015m / s is calculated based on the size of the shading sheet and the residence time of the laser emitted by the laser displacement sensor on the shading sheet.

[0098] Step 203: Substitute the surface velocity and thickness measurement values ​​at different slope angles into the above formula, and calculate the consistency coefficient of the system at 25° C. (25.0-35.0 Pa·sn) and the power law index (0.90-0.95) by calling the relevant function in MATLAB software using a graphical method. The relative deviation of the consistency coefficient and the power law index from the rotational rheometer measurement values ​​at the same temperature is 5%-9%.

[0099] Embodiment five:

[0100] In another exemplary embodiment of the present application, in order to evaluate the accuracy of a rheological measurement method for a high solid content solid-liquid system, the method is used to measure the solid content solid-liquid system (ASA powder / terminated hydroxyl polybutadiene solid-liquid system with a particle volume fraction greater than 0.1 and less than 0.2 in the rheometer, and the average particle size of the ASA powder is 165 μm and the density is 1.1 g / cm 3 ; The density of hydroxyl-terminated polybutadiene is 0.913 g / cm 3, the viscosity at 25°C is 17.15 Pa·s) and the rheological properties are measured, and the measurement results are compared with the values ​​measured by the rotational rheometer. Then the above steps 101 to 103 are replaced by steps 301 to 303:

[0101] Step 301: Based on the appropriately simplified momentum equation and the power law model, an analytical solution for the flow of a solid-liquid system on an inclined plane with an inclination angle of θ is derived under certain boundary conditions, as shown in the following formula, and the functional relationship between the surface velocity u(h), thickness h, inclined plane inclination angle θ, consistency coefficient K and power law index n of the solid-liquid system is obtained, where ρ is the density of the solid-liquid system, kg / m 3 .

[0102]

[0103] Step 302: Conduct a flow experiment of ASA powder / hydroxyl-terminated polybutadiene solid-liquid system with a drug volume of 0.8 to 1.7 L and a particle volume fraction greater than 0.1 and less than 0.2 through a ramp device, and record the experimental temperature of 25°C; the ramp device includes a ramp flow channel of a certain size, a light shielding sheet and a laser displacement sensor; the ramp flow channel consists of a ramp surface, a stainless steel flat plate base and a hopper trough; the ramp surface is connected to the stainless steel flat plate base through a loose-leaf, so that the slope angle can be adjusted; the hopper trough is welded at one end of the ramp flow channel, and the hopper trough is provided with a gate that can be pulled up and down, so that the drug to be tested can flow from the trough to the ramp surface; the total length of the ramp flow channel is 0.7 to 1.5 m; the length of the hopper trough is 0.12 to 0.22 m; the width of the ramp flow channel and the hopper trough is 0.12 to 0.22 m; the height of the hopper trough is 0.15 ~0.22m; the weight of the shading sheet can be ignored, the length is 0.025~0.05m, the width is 0.005~0.015m, and the thickness is 0.002~0.006m; when the front end of the drug to be tested flows out of the slope surface, the relevant personnel place the shading sheet on the surface of the drug to be tested that has not yet flowed through the laser displacement sensor, and the distance between the placement position and the laser emitted by the laser displacement sensor is 0.04~0.08m; the laser displacement sensor can record the thickness and time at the same time; the laser displacement sensor and the shading sheet are used to measure the thickness of the drug to be tested when the distance is 0.3~0.5m from the slope exit and the slope inclination is 10°~45°, which is 0.008~0.015m, and the surface flow velocity of 0.003~0.012m / s is calculated based on the size of the shading sheet and the residence time of the laser emitted by the laser displacement sensor on the shading sheet.

[0104] Step 303: Substitute the surface velocity and thickness measurement values ​​at different slope angles into equation (5), and calculate the consistency coefficient of the system at 25° C. (50.0-60.0 Pa·sn) and the power law index (0.78-0.90) by calling the relevant function in MATLAB software using a graphical method. The relative deviation of the consistency coefficient and the power law index from the rotational rheometer measurement values ​​at the same temperature is 5%-9%.

[0105] In an exemplary embodiment, a computer device is provided. The computer device may be a server or a terminal. The internal structure diagram thereof may be as follows: Figure 5 As shown. The computer device includes a processor, a memory, an input / output interface (Input / Output, referred to as I / O) and a communication interface. The processor, the memory and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a rheological measurement method for a high solid content solid-liquid system is implemented.

[0106] Those skilled in the art will understand that Figure 5 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0107] In an exemplary embodiment, a computer device is further provided, including a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the steps in the above-mentioned method embodiments when executing the computer program.

[0108] In an exemplary embodiment, a computer-readable storage medium is provided, storing a computer program, and when the computer program is executed by a processor, the steps in the above method embodiments are implemented.

[0109] In an exemplary embodiment, a computer program product is provided, including a computer program, and when the computer program is executed by a processor, the steps in the above method embodiments are implemented.

[0110] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant regulations.

[0111] Those of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM may be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM).

[0112] The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. The non-relational database may include a distributed database based on blockchain, etc., but is not limited thereto. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but is not limited thereto.

[0113] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0114] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and core ideas of this application. At the same time, for those skilled in the art, according to the ideas of this application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting this application.

Claims

1. A method for measuring the rheological properties of a high solid content solid-liquid system, characterized in that: The rheological measurement method of the high solid content solid-liquid system comprises: Obtain the density of a high solid content solid-liquid system; Acquire experimental data of a high-solid content solid-liquid system flow experiment; the high-solid content solid-liquid system flow experiment is an experiment in which the high-solid content solid-liquid system flows freely on the slope surface of a slope device; the experimental data include: surface flow velocity and thickness measurement values ​​of the high-solid content solid-liquid system at several different slope inclination angles; The density of the high-solid content solid-liquid system and the experimental data are input into a slope flow formula, and the consistency coefficient and power law index of the high-solid content solid-liquid system are calculated by a graphical method; the slope flow formula is a functional relationship formula between the surface flow velocity, thickness, slope inclination angle, consistency coefficient and power law index of the solid-liquid system; the slope flow formula is determined by a momentum equation and a power law model; The rheological property of the high solid content solid-liquid system is determined according to the consistency coefficient and the power law index.

2. The method for measuring the rheological properties of a high solid content solid-liquid system according to claim 1, characterized in that: The slope flow formula is: Among them, u(h) represents the surface flow velocity of the solid-liquid system, K represents the consistency coefficient of the solid-liquid system, n represents the power law exponent of the solid-liquid system, ρ represents the density of the solid-liquid system, g is the gravitational acceleration, θ represents the inclination angle of the inclined plane, and h represents the thickness of the solid-liquid system.

3. The method for measuring rheological properties of a high solid content solid-liquid system according to claim 1, characterized in that: The density of the high solid content solid-liquid system and the experimental data are input into the slope flow formula, and the consistency coefficient and power law index of the high solid content solid-liquid system are calculated by a graphical method, specifically including: The density of the high solid content solid-liquid system and the experimental data are input into the slope flow formula, and a function is called in MATLAB software to calculate the consistency coefficient and power law index of the high solid content solid-liquid system using a graphical method.

4. The method for measuring rheological properties of a high solid content solid-liquid system according to claim 1, characterized in that: Determining the rheological properties of the high solid content solid-liquid system according to the consistency coefficient and the power law index specifically includes: Get the experimental temperature; The rheological property of the high solid content solid-liquid system at the experimental temperature is determined according to the consistency coefficient and the power law index.

5. The method for measuring rheological properties of a high solid content solid-liquid system according to claim 1, characterized in that: The high solid content solid-liquid system is a solid-liquid system with a particle volume fraction greater than 0.

2.

6. A rheological measurement device for a high solid content solid-liquid system, characterized in that: The rheological property measuring device of the high solid content solid-liquid system comprises: a data acquisition module, a ramp device and a data processing module; The data acquisition module is used to: Obtain the density of a high solid content solid-liquid system; Acquire experimental data of a high-solid content solid-liquid system flow experiment; the high-solid content solid-liquid system flow experiment is an experiment in which the high-solid content solid-liquid system flows freely on the slope surface of a slope device; the experimental data include: surface flow velocity and thickness measurement values ​​of the high-solid content solid-liquid system at several different slope inclination angles; The data processing module is used to: The density of the high-solid content solid-liquid system and the experimental data are input into a slope flow formula, and the consistency coefficient and power law index of the high-solid content solid-liquid system are calculated by a graphical method; the slope flow formula is a functional relationship formula between the surface flow velocity, thickness, slope inclination angle, consistency coefficient and power law index of the solid-liquid system; the slope flow formula is determined by a momentum equation and a power law model; Determining the rheological properties of the high solid content solid-liquid system according to the consistency coefficient and the power law index; The slope device comprises: a slope surface, a shading sheet, a displacement sensor and a flat base; the shading sheet and the displacement sensor are arranged directly above the slope surface; the flat base is movably connected to the slope surface; the slope inclination angle of the slope surface can be changed; The displacement sensor is used to record the thickness and corresponding time of the high solid content solid-liquid system flowing through the slope surface.

7. The rheological property measuring device for high solid content solid-liquid system according to claim 6, characterized in that: The ramp device also includes: a hopper trough; The hopper trough is arranged at one end of the slope surface; The hopper trough is provided with a gate; The gate is used to control the high-solid content solid-liquid system to flow from the hopper tank to the slope surface.

8. A computer device comprising: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the rheological measurement method for a high solid content solid-liquid system according to any one of claims 1 to 5.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the rheological measurement method of a high-solid-content solid-liquid system according to any one of claims 1 to 5 is implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the rheological measurement method of a high-solid-content solid-liquid system according to any one of claims 1 to 5 is implemented.

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