Silicone rubber aging test method and device, electronic equipment and storage medium

Abstract

The invention provides a silicone rubber aging test method and device, electronic equipment and a storage medium, and relates to the technical field of silicone rubber. The silicone rubber aging test method comprises the following steps: according to a preset actual application environment of target silicone rubber, determining cycle test parameters of preset aging factors corresponding to the actual application environment; determining an acceleration factor of the aging test according to the cycle test parameters and a preset calculation mode; performing thermogravimetric analysis on the target silicone rubber according to the cycle test parameters to determine mass loss parameters of the target silicone rubber; and determining an aging test result according to the elongation at break, the acceleration factor and the mass loss parameter of the target silicone rubber. According to the method, the aging performance of the target silicone rubber is integrally and comprehensively evaluated by combining multiple indexes such as the elongation at break, the acceleration factor and the quality loss parameter, and the test efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of silicone rubber aging, for example, to an aging test method, device, electronic equipment and storage medium for silicone rubber. Background Art

[0002] Composite insulators are important insulating components in power systems, which usually include insulators, end fittings at both ends of the insulators, and umbrella covers around the insulators. The umbrella cover is the outer insulating layer of the composite insulator and is generally made of silicone rubber material. After being put into use, composite insulators need to operate for a long time in an environment where various factors act together, including temperature, oxidation, moisture, electromagnetic fields, ultraviolet radiation, and dirty environments. After a period of service, the silicone rubber outer insulation layer of the composite insulator usually ages under the combined influence of these factors, which is mainly manifested in decreased hardness and tensile strength, increased thermal conductivity, decreased insulation resistivity, etc., which will eventually lead to a gradual decrease in the performance of silicone rubber, or even loss. Therefore, it is very necessary to conduct aging tests on silicone rubber in advance to evaluate its aging performance.

[0003] In the related art, single-factor testing is generally used for aging testing of silicone rubber. The corresponding aging process is a long process, so the test cycle is usually long, which leads to low test efficiency. Summary of the invention

[0004] The present application aims to provide a silicone rubber aging test method, device, electronic equipment and storage medium, which can solve the problems of long cycle and low efficiency of single-factor aging test in the prior art.

[0005] According to one aspect of the present application, a method for testing aging of silicone rubber is proposed, comprising: determining, according to a preset actual application environment of the target silicone rubber, cyclic test parameters of preset aging factors corresponding to the actual application environment; determining, according to the cyclic test parameters and a preset calculation method, an acceleration factor of the aging test; performing a thermogravimetric analysis on the target silicone rubber according to the cyclic test parameters to determine a mass loss parameter of the target silicone rubber; and determining an aging test result according to the elongation at break, the acceleration factor and the mass loss parameter of the target silicone rubber.

[0006] According to some embodiments, the acceleration factor of the aging test is determined according to the cycle test parameters and the preset calculation method, including: determining the activation energy calculation parameters and the acceleration calculation parameters from the cycle test parameters; determining the differential processing method and the improved acceleration calculation method for calculating the activation energy from the preset calculation method; determining the activation energy of the target silicone rubber during the reaction according to the activation energy calculation parameters and the differential processing method; determining the acceleration factor according to the acceleration calculation parameters, the acceleration calculation method and the activation energy.

[0007] According to some embodiments, the activation energy of the target silicone rubber during the reaction is determined according to the activation energy calculation parameters and the differential processing method, including: determining different heating rates and peak temperatures corresponding to the heating rates from the activation energy calculation parameters; determining the activation energy curve based on the heating rate, peak temperature and the differential processing method; fitting the activation energy curve according to the least squares method to determine the slope of the fitted straight line; and determining the corresponding activation energy according to the slope.

[0008] According to some embodiments, the acceleration calculation method includes a reaction rate calculation method, a reversible method, a superposition method and an acceleration factor determination method; wherein, the acceleration factor is determined according to the acceleration calculation parameters, the acceleration calculation method and the activation energy, including: determining the first rate constant of the aging test according to the reaction rate calculation method and the acceleration calculation parameters; determining the second rate constant of the aging test according to the reversible method, the reaction rate calculation method and the acceleration calculation parameters; determining the target rate constant of the aging test according to the superposition method, the first rate constant and the second rate constant; determining the acceleration factor according to the acceleration factor determination method, the target rate constant and the acceleration calculation parameters.

[0009] According to some embodiments, a thermogravimetric analysis is performed on the target silicone rubber according to the cyclic test parameters to determine the mass loss parameters of the target silicone rubber, including: obtaining the initial mass of the target silicone rubber; determining multiple heating rates from the cyclic test parameters; determining the mass change information of the target silicone rubber during the heating process according to the multiple heating rates; and determining the mass loss parameters according to the mass change information and the initial mass.

[0010] According to some embodiments, an aging test result is determined based on the elongation at break, acceleration factor and mass loss parameter of the target silicone rubber, including: determining the tensile test result of the target silicone rubber based on the elongation at break; determining the corresponding equivalent aging time based on the acceleration factor; determining the mass loss percentage based on the mass loss parameter; and determining the tensile test result, the equivalent aging time and the mass loss percentage as the aging test result.

[0011] According to some embodiments, based on the preset actual application environment of the target silicone rubber, the cyclic test parameters of the preset aging factors corresponding to the actual application environment are determined, including: determining the aging factors of the target silicone rubber according to the actual application environment; obtaining the environmental characteristics of the actual application environment; determining the aging test steps, aging test cycles and aging test conditions according to the aging factors and environmental characteristics; and determining the aging test steps, aging test cycles and aging test conditions as cyclic test parameters.

[0012] According to one aspect of the present application, an aging test device for silicone rubber is proposed, comprising: a test parameter determination module, for determining, according to the preset actual application environment of the target silicone rubber, a cyclic test parameter of a preset aging factor corresponding to the actual application environment; an acceleration factor determination module, for determining the acceleration factor of the aging test according to the cyclic test parameters and a preset calculation method; a loss parameter determination module, for performing a thermogravimetric analysis on the target silicone rubber according to the cyclic test parameters to determine the mass loss parameter of the target silicone rubber; and a test result determination module, for determining the aging test result according to the tear elongation, acceleration factor and mass loss parameter of the target silicone rubber.

[0013] According to one aspect of the present application, an electronic device is provided, the electronic device comprising: a processor; a memory storing a computer program, and when the computer program is executed by the processor, the processor executes the above-mentioned aging test method for silicone rubber.

[0014] According to one aspect of the present application, a non-transitory computer-readable medium is provided, on which readable instructions are stored. When the instructions are executed by a processor, the processor executes the aging test method for silicone rubber as described above.

[0015] It should be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the present application.

[0016] Beneficial effects:

[0017] Through the above embodiments provided by the present application, by deeply analyzing the actual application environment of the target silicone rubber, the corresponding preset aging factors, such as temperature, humidity, light, mechanical stress, etc., are determined, and the cycle test parameters are set accordingly. This precise environmental simulation ensures a high degree of consistency between the test conditions and the actual application conditions, thereby improving the accuracy and practicality of the test results. The acceleration factor of the aging test is calculated using the cycle test parameters and the preset calculation method. By calculating the acceleration factor, the test time and test conditions can be planned more scientifically to improve the test efficiency. According to the cycle test parameters, the target silicone rubber is subjected to a thermogravimetric analysis to determine its mass loss parameter. By accurately determining the mass loss parameter, the material change law of silicone rubber during the aging process can be more deeply understood. Combined with multiple indicators such as elongation at break, acceleration factor and mass loss parameter, the aging performance of the target silicone rubber is comprehensively evaluated. This comprehensive evaluation method not only takes into account the changes in the mechanical properties of the material, but also takes into account the material loss of the material during the aging process, as well as the influence of the test conditions on the aging rate, so as to more comprehensively and accurately reflect the aging performance of silicone rubber. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of 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 exceeding the scope of protection required by the present application.

[0019] Figure 1 A flow chart of an aging test method for silicone rubber provided in an embodiment of the present application;

[0020] Figure 2 A flowchart of an implementation method of step S11 provided in an embodiment of the present application;

[0021] Figure 3 A flowchart of an implementation method of step S111 provided in an embodiment of the present application;

[0022] Figure 4 A flowchart of an implementation method of step S112 provided in an embodiment of the present application;

[0023] Figure 5 A flowchart of an implementation method of step S12 provided in an embodiment of the present application;

[0024] Figure 6 A flowchart of an implementation method of step S13 provided in an embodiment of the present application;

[0025] Figure 7 A flowchart of an implementation method of step S10 provided in an embodiment of the present application;

[0026] Figure 8 A block diagram of a silicone rubber aging test device provided in an embodiment of the present application;

[0027] Fig. 9 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0028] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this application will be comprehensive and complete and will fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar parts, and thus their repeated description will be omitted.

[0029] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present application. However, those skilled in the art will appreciate that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, known methods, devices, realizations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0030] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities may be implemented in software form, or in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.

[0031] The flowcharts shown in the accompanying drawings are only exemplary and do not necessarily include all the contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps can be decomposed, and some operations / steps can be combined or partially combined, so the actual execution order may change according to actual conditions.

[0032] It should be understood that although the terms first, second, third, etc. may be used herein to describe various components, these components should not be limited by these terms. These terms are used to distinguish one component from another component. Therefore, the first component discussed below can be referred to as the second component without departing from the teachings of the concepts of the present application. As used herein, the term "and / or" includes any one of the associated listed items and all combinations of one or more.

[0033] For specific implementation methods, please refer to the following embodiments.

[0034] Figure 1 This is a flow chart of the aging test method for silicone rubber provided in the embodiment of the present application. The method of this embodiment can be applied to an aging test server. Figure 1 As shown, the method includes: step S10, step S11, step S12 and step S13.

[0035] In step S10, according to the preset actual application environment of the target silicone rubber, the cycle test parameters of the preset aging factors corresponding to the actual application environment are determined.

[0036] In this application, the target silicone rubber is an elastomer vulcanized under heating and pressure using high molecular weight polymethylvinylsiloxane as raw rubber, mixed with reinforcing fillers, vulcanizing agents, etc., and is usually used for the outer insulating layer of composite insulators. The target silicone rubber is a representative number of silicone rubbers extracted from a large number of composite insulators for testing.

[0037] In actual applications, the target silicone rubber may encounter different environments, such as long-term exposure to ultraviolet radiation outdoors, or high humidity, rainy, high temperature, etc. The cycle test parameters can be used to indicate the test parameters used in the aging test of silicone rubber, which may include test cycles, temperature of each test cycle, and other parameters.

[0038] According to the example embodiments, the correspondence between different actual application environments and preset aging factors, as well as the correspondence between different preset aging factors and cycle test parameters can be preset based on historical aging test data, and the correspondence can be stored so that the corresponding preset aging factors can be directly found according to the preset actual application environment of the target silicone rubber, and then the corresponding cycle test parameters can be found and determined.

[0039] In step S11, an acceleration factor of the aging test is determined according to the cycle test parameters and a preset calculation method.

[0040] In this application, the acceleration factor is a key indicator for evaluating the effectiveness of the accelerated aging test, which reflects the increase in the product aging rate under accelerated test conditions relative to normal conditions. The preset calculation method may include using an acceleration model such as the Arrhenius model and a commonly used acceleration factor calculation formula.

[0041] According to an example embodiment, a pre-stored preset calculation method may be called, and the cycle test parameters may be mapped to the parameter positions of the preset calculation method to perform calculations to obtain the acceleration factor of the aging test.

[0042] In step S12, a thermogravimetric analysis is performed on the target silicone rubber according to the cycle test parameters to determine the mass loss parameters of the target silicone rubber.

[0043] In the present application, the cycle test parameters may specifically include temperature range, heating rate, holding time, number of cycles, etc. The mass loss parameter is an important indicator reflecting the material loss during the aging process of the material, and is of great significance for evaluating the durability and stability of the material.

[0044] According to an example embodiment, the target silicone rubber may be placed in a suitable thermogravimetric analyzer in advance, and the aging test server may input cycle test parameters to the thermogravimetric analyzer so that the thermogravimetric analyzer can work according to the cycle test parameters and output mass loss parameters.

[0045] In step S13, the aging test result is determined according to the elongation at break, the acceleration factor and the mass loss parameter of the target silicone rubber.

[0046] According to the example embodiment, the elongation at break of the target silicone rubber can be calculated in advance. Specifically, the target silicone rubber can be placed on a tensile testing machine by a relevant staff member. The tensile testing machine can record the length of the target silicone rubber when it is stretched until it breaks, and send the length to the aging test server. The aging test server can calculate the elongation at break based on the initial length and the length at break of the target silicone rubber. Generally, the elongation at break can be obtained by subtracting the length at break from the initial length, dividing the difference by the initial length and multiplying by 100%.

[0047] The aging test server takes the tear elongation, acceleration factor and mass loss parameters as input parameters, inputs them into a preset aging test result determination model, and directly outputs them to determine the aging test results.

[0048] This application deeply analyzes the actual application environment of the target silicone rubber, determines the corresponding preset aging factors, such as temperature, humidity, light, mechanical stress, etc., and sets the cycle test parameters accordingly. This precise environmental simulation ensures a high degree of consistency between the test conditions and the actual application conditions, thereby improving the accuracy and practicality of the test results. The acceleration factor of the aging test is calculated using the cycle test parameters and the preset calculation method. By calculating the acceleration factor, the test time and test conditions can be planned more scientifically to improve the test efficiency. According to the cycle test parameters, the target silicone rubber was subjected to a thermogravimetric analysis and its mass loss parameters were determined. By accurately determining the mass loss parameters, the material changes of silicone rubber during the aging process can be more deeply understood. Combined with multiple indicators such as elongation at break, acceleration factor and mass loss parameter, the aging performance of the target silicone rubber was comprehensively evaluated. This comprehensive evaluation method not only takes into account the changes in the mechanical properties of the material, but also takes into account the material loss of the material during the aging process, as well as the influence of the test conditions on the aging rate, so that the aging performance of silicone rubber can be more comprehensively and accurately reflected.

[0049] According to some embodiments, reference Figure 2 , step S11 can be specifically implemented through step S110, step S111 and step S112.

[0050] In step S110, activation energy calculation parameters and acceleration calculation parameters are determined from the cycle test parameters; and a differential processing method and an improved acceleration calculation method for calculating activation energy are determined from the preset calculation methods.

[0051] In the present application, the cycle test parameters include activation energy calculation parameters and acceleration calculation parameters, wherein the activation energy calculation parameters can be used to represent the parameters needed to calculate the activation energy of the aging test reaction, such as temperature, reaction rate, etc. The acceleration calculation parameters can be used to represent the parameters needed to calculate the acceleration factor. Correspondingly, the preset calculation method includes a differential processing method for calculating the activation energy and an improved acceleration calculation method, and these two methods can be specifically calculation formulas to facilitate direct substitution of parameters.

[0052] According to the exemplary embodiment, activation energy calculation parameters and acceleration calculation parameters can be extracted from the cycle test parameters, and a differential processing method for calculating activation energy and an improved acceleration calculation method can be extracted from the preset calculation method.

[0053] In step S111, the activation energy of the target silicone rubber during the reaction is determined according to the activation energy calculation parameters and the differential processing method.

[0054] According to an exemplary embodiment, the activation energy calculation parameters are substituted into the differential processing mode to perform corresponding logic calculations to obtain the activation energy of the target silicone rubber during the reaction.

[0055] In step S112, an acceleration factor is determined according to the acceleration calculation parameters, the acceleration calculation method and the activation energy.

[0056] According to an exemplary embodiment, the acceleration calculation parameter and the activation energy are substituted into the acceleration calculation method to perform corresponding logic calculations to obtain the acceleration factor.

[0057] The present application can accurately calculate the activation energy of the target silicone rubber during the reaction process by extracting the activation energy calculation parameters from the cyclic test parameters and combining the differential processing method. The preset calculation method includes an improved accelerated calculation method, which combines the accelerated calculation parameters and the activation energy to more accurately calculate the acceleration factor. Compared with the traditional accelerated calculation method, the improved accelerated calculation method takes into account more factors that affect the aging of silicone rubber, and therefore can more comprehensively reflect the performance changes of silicone rubber in the accelerated aging test. By accurately calculating the activation energy and optimizing the accelerated calculation method, the acceleration factor can be determined more accurately, thereby guiding the conduct of the accelerated aging test. This not only improves the test efficiency, but also ensures the accuracy of the test results.

[0058] According to some embodiments, reference Figure 3 , step S111 can be specifically implemented through step S1110 and step S1111.

[0059] In step S1110, different heating rates and peak temperatures corresponding to the heating rates are determined from activation energy calculation parameters; and an activation energy curve is determined based on the heating rate, peak temperature and differential processing method.

[0060] In the present application, the activation energy calculation parameters include different heating rates and peak temperatures corresponding to different heating rates.

[0061] According to an example embodiment, the heating rate and the peak temperature corresponding to the heating rate can be directly extracted from the activation energy calculation parameters. In some implementations, the expression corresponding to the differential processing method can be:

[0062]

[0063] Where β is the heating rate, T p is the peak temperature, A is the pre-exponential factor, which can be a preset constant, R is a preset constant related to the reaction characteristics, E is the activation energy, R is the gas constant, and T is the temperature.

[0064] According to the T p , we can calculate the corresponding Then with is the vertical axis, The activation energy curve is obtained by plotting the calculated values ​​with .

[0065] In step S1111, the activation energy curve is fitted according to the least square method to determine the slope of the fitted straight line; and the corresponding activation energy is determined according to the slope.

[0066] According to an exemplary embodiment, the activation energy curve is fitted using the least square method to obtain a fitted straight line, and the slope and intercept of the straight line are obtained, wherein the slope can be calculated by dividing the negative activation energy by the gas constant, and thus the activation energy is calculated by multiplying the negative slope by the gas constant.

[0067] This application determines different heating rates and their corresponding peak temperatures from the activation energy calculation parameters. This technology can accurately capture the energy change characteristics of silicone rubber during the reaction process based on experimental data. The activation energy curve is determined by differential processing, which can dynamically reflect the changing trend of the reaction rate of silicone rubber under different heating rates. The least squares method is used to fit the activation energy curve to ensure that the fitted straight line is closer to the actual data, thereby reducing errors and improving the accuracy of activation energy calculation. By directly determining the activation energy based on the slope of the fitted straight line, this technology simplifies the calculation steps of the activation energy, making the whole process more efficient and convenient.

[0068] According to some embodiments, the acceleration calculation method includes a reaction speed calculation method, a reversal method, a superposition method, and an acceleration factor determination method. Figure 4 , step S112 can be specifically implemented through step S1120, step S1121 and step S1122.

[0069] In step S1120, a first rate constant of the aging test is determined according to the reaction rate calculation method and the acceleration calculation parameter.

[0070] In the present application, the reaction rate calculation method may be the original Arrhenius equation based on temperature, and the acceleration calculation parameter is substituted into the Arrhenius equation for calculation to obtain the first rate constant.

[0071] In step S1121, a second rate constant of the aging test is determined according to the falling mode, the reaction rate calculation mode and the acceleration calculation parameter.

[0072] In the present application, the inverted method can be based on the reaction rate calculation method, that is, the original Arrhenius equation, to derive a rate equation based on single-factor aging conditions such as damp heat aging and ultraviolet aging. After the reaction rate calculation method is inverted, a new equation is obtained, and the acceleration calculation parameter is substituted into the equation to obtain the second rate constant.

[0073] In step S1122, the target speed constant of the aging test is determined according to the superposition method, the first speed constant and the second speed constant; the acceleration factor is determined according to the acceleration factor determination method, the target speed constant and the acceleration calculation parameter.

[0074] In the present application, the superposition method can superimpose the rate equations of the single factor aging obtained by the inverted method, and the equations corresponding to each single factor are in a multiplication relationship. The first rate constant and the second rate constant are multiplied in the superposition method to obtain the final target rate constant. In some implementations, there are multiple second rate constants calculated using the inverted method, so it may be that the first rate constant is multiplied by multiple second rate constants.

[0075] The target speed constant and the acceleration calculation parameters can be substituted into the equation corresponding to the acceleration factor determination method to calculate and obtain the acceleration factor. In some implementations, a corresponding acceleration model can be pre-established based on the acceleration factor determination method, and the target speed constant and the acceleration calculation parameters can be input into the acceleration model to output the acceleration factor.

[0076] By combining the reaction rate calculation method and the easy-to-reverse method, the present application can more comprehensively consider the factors affecting the reaction rate, including temperature, humidity, ultraviolet light, etc., thereby improving the prediction accuracy of the reaction rate in the aging test. The first rate constant and the second rate constant are combined by superposition to obtain the target rate constant, which helps to more accurately reflect the complex situation in the actual aging process. The acceleration factor determination method is based on the target rate constant and the acceleration calculation parameter, which further improves the calculation accuracy of the acceleration factor.

[0077] According to some embodiments, reference Figure 5 , step S12 can be specifically implemented through step S120 and step S121.

[0078] In step S120, the initial mass of the target silicone rubber is obtained; and a plurality of heating rates are determined from the cycle test parameters.

[0079] In the present application, the initial mass of the target silicone rubber can be measured and stored in advance. The cycle test parameters include multiple heating rates.

[0080] According to an example embodiment, the initial mass corresponding to the target silicone rubber is firstly obtained, and then a plurality of heating rates are extracted from the cycle test parameters.

[0081] In step S121, the mass change information of the target silicone rubber during the heating process is determined according to a plurality of heating rates; and the mass loss parameter is determined according to the mass change information and the initial mass.

[0082] In the present application, the target silicone rubber is randomly divided into several groups, and each group of target silicone rubber samples corresponds to a heating rate. The mass change information may include the mass of the target silicone rubber at different times during the heating process. The mass loss parameter may be a mass difference or a mass loss percentage.

[0083] According to the example embodiment, the aging server can control the start of the thermogravimetric analyzer, set the corresponding heating rate for each group of target silicone rubber samples, heat them, and collect the mass change information of the target silicone rubber during the heating process. By analyzing the mass change information, it is determined that the mass change tends to be stable, that is, when the mass fluctuation is within the range of 0 to 0.05, the mass value with the most occurrences can be used as the final mass. Then, the mass loss parameter can be calculated based on the final mass and the initial mass.

[0084] This application provides a reliable benchmark for the subsequent calculation of mass loss parameters by obtaining the initial mass of the target silicone rubber. Setting multiple heating rates for cyclic testing can more comprehensively determine the mass loss behavior of silicone rubber under different temperature conditions, thereby improving the accuracy and comprehensiveness of the analysis.

[0085] According to some embodiments, reference Figure 6 , step S13 can be specifically implemented through step S130 and step S131.

[0086] In step S130, the tensile test result of the target silicone rubber is determined according to the elongation at break; the corresponding equivalent aging time is determined according to the acceleration factor; and the mass loss percentage is determined according to the mass loss parameter.

[0087] According to an exemplary embodiment, the elongation at break is used as the tensile test result of the target silicone rubber, and the acceleration factor is converted into the corresponding equivalent aging time. For example, an acceleration factor of 88.81 can indicate that one day of comprehensive aging is equivalent to 88.81 days of outdoor aging. The mass loss percentage is extracted from the mass loss parameter.

[0088] In step S131, the tensile test result, the equivalent aging time and the mass loss percentage are determined as the aging test result.

[0089] According to example embodiments, the tensile test result, the equivalent aging time, and the mass loss percentage are integrally stored as the aging test result of the target silicone rubber.

[0090] This application can accurately evaluate the performance of the target silicone rubber under tensile conditions by measuring the elongation at break. The introduction of the acceleration factor makes it possible to simulate the long-term aging effect in a relatively short period of time, greatly improving the test efficiency while maintaining the accuracy of the test results. The determination of the mass loss parameter determines the mass change of the material during the aging process, providing important information for evaluating the thermal stability and aging resistance of the material. Combining the three indicators of tensile test results, equivalent aging time and mass loss percentage, the aging performance of silicone rubber is comprehensively reflected from the three perspectives of mechanical properties, time dimension and mass change.

[0091] According to some embodiments, reference Figure 7 , step S10 can be specifically implemented through step S100 and step S101.

[0092] In step S100, the aging factor of the target silicone rubber is determined according to the actual application environment; and the environmental characteristics of the actual application environment are acquired.

[0093] In the present application, aging factors corresponding to different actual application environments can be set in advance according to a large number of application environments and the use of the target silicone rubber. The environmental characteristics of the actual application environment can be obtained and stored by pre-collecting in the actual application environment.

[0094] According to an example embodiment, the aging factor and the environmental characteristics corresponding to the actual application environment are directly acquired.

[0095] In step S101, the aging test steps, aging test cycles and aging test conditions are determined according to aging factors and environmental characteristics; the aging test steps, aging test cycles and aging test conditions are determined as cycle test parameters.

[0096] In the present application, the aging test step may include the sequential operation sequence of the tests of different aging factors during the aging test. The aging test cycle can be used to represent the aging time of different aging factors and the overall number of repetitions, etc. For example, 56 hours of thermal oxygen aging, 56 hours of damp heat aging, 56 hours of ultraviolet aging, and then repeated thermal oxygen aging can be performed. The aging test conditions can be used to characterize the specific parameters of different aging factors, such as 80 degrees Celsius for thermal oxygen aging, 93% humidity and 50 degrees Celsius for damp heat aging, 0.76 watts per square meter and 50 degrees Celsius for ultraviolet aging, etc.

[0097] According to an example embodiment, aging factors and environmental characteristics are input into a preset aging test model, and aging test steps, aging test cycles and aging test conditions are directly output, and the aging test steps, aging test cycles and aging test conditions are used as a whole as cyclic test parameters.

[0098] This application ensures that the test is closer to the actual situation by first determining the aging factors of the target silicone rubber according to its actual application environment, thereby improving the pertinence and accuracy of the test. This method avoids the "one-size-fits-all" phenomenon that may exist in traditional testing, that is, using a unified test standard without considering the specific use environment, so as to more accurately evaluate the aging performance of silicone rubber. By obtaining the environmental characteristics of the actual application environment and determining the aging test steps, cycles and conditions accordingly, the test process can be further optimized. This customized test solution not only improves test efficiency, but also reduces unnecessary waste of resources, making the test process more scientific and reasonable.

[0099] The following describes an apparatus embodiment of the present application, which can be used to execute the method embodiment of the present application. For details not disclosed in the apparatus embodiment of the present application, reference can be made to the method embodiment of the present application.

[0100] Figure 8 This is a block diagram of the aging test device for silicone rubber provided in the embodiment of the present application. Figure 8 As shown, the aging test device 800 for silicone rubber includes a test parameter determination module 801 , an acceleration factor determination module 802 , a loss parameter determination module 803 and a test result determination module 804 .

[0101] Among them, the test parameter determination module 801 is used to determine the cycle test parameters of the preset aging factors corresponding to the actual application environment according to the preset actual application environment of the target silicone rubber; the acceleration factor determination module 802 is used to determine the acceleration factor of the aging test according to the cycle test parameters and the preset calculation method; the loss parameter determination module 803 is used to perform thermal gravimetric analysis on the target silicone rubber according to the cycle test parameters to determine the mass loss parameters of the target silicone rubber; the test result determination module 804 is used to determine the aging test results according to the elongation at break, the acceleration factor and the mass loss parameter of the target silicone rubber.

[0102] Optionally, the acceleration factor determination module 802 is specifically used to: determine the activation energy calculation parameters and the acceleration calculation parameters from the cycle test parameters; determine the differential processing method and the improved acceleration calculation method for calculating the activation energy from the preset calculation method; determine the activation energy of the target silicone rubber during the reaction according to the activation energy calculation parameters and the differential processing method; determine the acceleration factor according to the acceleration calculation parameters, the acceleration calculation method and the activation energy.

[0103] Optionally, when determining the activation energy of the target silicone rubber during the reaction according to the activation energy calculation parameters and the differential processing method, the acceleration factor determination module 802 is specifically used to: determine different heating rates and peak temperatures corresponding to the heating rates from the activation energy calculation parameters; determine the activation energy curve based on the heating rate, peak temperature and the differential processing method; fit the activation energy curve according to the least squares method to determine the slope of the fitted straight line; and determine the corresponding activation energy according to the slope.

[0104] Optionally, the acceleration calculation method includes a reaction rate calculation method, a reversible method, a superposition method and an acceleration factor determination method; wherein, the acceleration factor determination module 802, when determining the acceleration factor according to the acceleration calculation parameters, the acceleration calculation method and the activation energy, is specifically used to: determine the first rate constant of the aging test according to the reaction rate calculation method and the acceleration calculation parameters; determine the second rate constant of the aging test according to the reversible method, the reaction rate calculation method and the acceleration calculation parameters; determine the target rate constant of the aging test according to the superposition method, the first rate constant and the second rate constant; determine the acceleration factor according to the acceleration factor determination method, the target rate constant and the acceleration calculation parameters.

[0105] Optionally, the loss parameter determination module 803 is specifically used to: obtain the initial mass of the target silicone rubber; determine multiple heating rates from the cycle test parameters; determine the mass change information of the target silicone rubber during the heating process according to the multiple heating rates; and determine the mass loss parameter according to the mass change information and the initial mass.

[0106] Optionally, when determining the aging test result based on the elongation at break, acceleration factor and mass loss parameter of the target silicone rubber, the test result determination module 804 is specifically used to: determine the tensile test result of the target silicone rubber based on the elongation at break; determine the corresponding equivalent aging time based on the acceleration factor; determine the mass loss percentage based on the mass loss parameter; and determine the tensile test result, equivalent aging time and mass loss percentage as the aging test result.

[0107] Optionally, the test parameter determination module 801 is specifically used to: determine the aging factors of the target silicone rubber according to the actual application environment; obtain the environmental characteristics of the actual application environment; determine the aging test steps, aging test cycle and aging test conditions according to the aging factors and environmental characteristics; and determine the aging test steps, aging test cycle and aging test conditions as cyclic test parameters.

[0108] The device performs functions similar to the method provided above. For other functions, please refer to the previous description and will not be repeated here.

[0109] Fig. 9 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application, such as Fig. 9 As shown, the electronic device 900 of this embodiment may include: a memory 901 and a processor 902 .

[0110] The memory 901 stores a computer program. When the computer program is executed by the processor 902, the processor 902 executes the aging test method for silicone rubber in the above embodiment.

[0111] The processor 902 and the memory 901 are connected, for example, via a bus.

[0112] Optionally, the electronic device 900 may further include a transceiver. It should be noted that in actual applications, the number of transceivers is not limited to one, and the structure of the electronic device 900 does not constitute a limitation on the embodiments of the present application.

[0113] The processor 902 may be a CPU (Central Processing Unit), a general-purpose processor, a DSP (Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It may implement or execute various exemplary logic blocks, modules, and circuits described in conjunction with the disclosure of this application. The processor 902 may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and the like.

[0114] The bus may include a path to transmit information between the above components. The bus may be a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Fig. 9 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0115] The memory 901 can be a ROM (Read Only Memory) or other types of static storage devices that can store static information and instructions, a RAM (Random Access Memory) or other types of dynamic storage devices that can store information and instructions, or an EEPROM (Electrically Erasable Programmable Read Only Memory), a CD-ROM (Compact Disc Read Only Memory) or other optical disk storage, optical disk storage (including compressed optical disk, laser disk, optical disk, digital versatile disk, Blu-ray disk, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited to these.

[0116] The memory 901 is used to store the application code for executing the solution of the present application, and the execution is controlled by the processor 902. The processor 902 is used to execute the application code stored in the memory 901 to implement the contents shown in the above method embodiment.

[0117] Among them, electronic devices include but are not limited to: mobile terminals such as mobile phones, laptops, digital broadcast receivers, PDAs (personal digital assistants), PADs (tablet computers), PMPs (portable multimedia players), vehicle-mounted terminals (such as vehicle-mounted navigation terminals), etc., and fixed terminals such as digital TVs, desktop computers, etc., and can also be servers, etc. Fig. 9 The electronic device 900 shown is merely an example and should not bring any limitation to the functions and scope of use of the embodiments of the present application.

[0118] The electronic device of this embodiment can be used to execute the method of any of the above embodiments, and its implementation principle and technical effect are similar, which will not be described in detail here.

[0119] The present application also provides a non-transitory computer-readable storage medium having computer-readable instructions stored thereon. When the aforementioned instructions are executed by a processor, the processor executes the aging test method for silicone rubber in the above embodiment.

[0120] Those skilled in the art can understand that all or part of the steps of implementing the above-mentioned method embodiments can be completed by hardware related to program instructions. The aforementioned program can be stored in a non-transient computer-readable storage medium. When the program is executed, the steps of the above-mentioned method embodiments are executed; and the aforementioned storage medium includes: ROM, RAM, disk or optical disk and other media that can store program codes.

[0121] The embodiments of the present application are described in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and its core idea of ​​the present application. At the same time, changes or deformations made by those skilled in the art based on the ideas of the present application, the specific implementation methods and the scope of application of the present application, all belong to the scope of protection of the present application. In summary, the content of this specification should not be construed as a limitation on the present application.

Claims

1. A method for testing aging of silicone rubber, characterized in that: include: According to a preset actual application environment of the target silicone rubber, determining a cycle test parameter of a preset aging factor corresponding to the actual application environment; Determining an acceleration factor for an aging test according to the cycle test parameters and a preset calculation method; According to the cycle test parameters, performing a thermogravimetric analysis on the target silicone rubber to determine the mass loss parameters of the target silicone rubber; The aging test result is determined according to the elongation at break of the target silicone rubber, the acceleration factor and the mass loss parameter.

2. The method according to claim 1, characterized in that Determining the acceleration factor of the aging test according to the cycle test parameters and a preset calculation method includes: Determining activation energy calculation parameters and acceleration calculation parameters from the cycle test parameters; Determining a differential processing method and an improved accelerated calculation method for calculating activation energy from the preset calculation methods; Determining the activation energy of the target silicone rubber during the reaction according to the activation energy calculation parameters and the differential processing method; The acceleration factor is determined according to the acceleration calculation parameter, the acceleration calculation method and the activation energy.

3. The method according to claim 2, characterized in that The step of determining the activation energy of the target silicone rubber during the reaction according to the activation energy calculation parameter and the differential processing method includes: Determining different heating rates and peak temperatures corresponding to the heating rates from the activation energy calculation parameters; Determine an activation energy curve based on the heating rate, the peak temperature and the differential processing method; Fitting the activation energy curve according to the least squares method to determine the slope of the fitted straight line; According to the slope, the corresponding activation energy is determined.

4. The method according to claim 2, characterized in that: The acceleration calculation method includes a reaction speed calculation method, an inverted method, a superposition method and an acceleration factor determination method; Wherein, determining the acceleration factor according to the acceleration calculation parameter, the acceleration calculation method and the activation energy includes: Determining a first rate constant of the aging test according to the reaction rate calculation method and the acceleration calculation parameter; Determining a second rate constant of the aging test according to the invertible mode, the reaction rate calculation mode and the acceleration calculation parameter; Determining a target speed constant of the aging test according to the superposition mode, the first speed constant and the second speed constant; The acceleration factor is determined according to the acceleration factor determination method, the target speed constant and the acceleration calculation parameter.

5. The method according to claim 1, characterized in that The step of performing a thermogravimetric analysis on the target silicone rubber according to the cycle test parameters to determine the mass loss parameters of the target silicone rubber comprises: Obtaining the initial mass of the target silicone rubber; determining a plurality of heating ramp rates from the cyclic test parameters; Determining mass change information of the target silicone rubber during the heating process according to the multiple heating rates; The mass loss parameter is determined according to the mass change information and the initial mass.

6. The method according to claim 1, characterized in that The step of determining the aging test result according to the elongation at break of the target silicone rubber, the acceleration factor and the mass loss parameter comprises: Determining the tensile test result of the target silicone rubber according to the elongation at break; According to the acceleration factor, determining the corresponding equivalent aging time; Determining a mass loss percentage according to the mass loss parameter; The tensile test result, the equivalent aging time and the mass loss percentage are determined as the aging test result.

7. The method according to any one of claims 1 to 6, characterized in that: The step of determining the cycle test parameters of the preset aging factors corresponding to the actual application environment according to the preset actual application environment of the target silicone rubber includes: Determining an aging factor of the target silicone rubber according to the actual application environment; Acquiring environmental characteristics of the actual application environment; Determining aging test steps, aging test cycles and aging test conditions according to the aging factors and the environmental characteristics; The aging test steps, the aging test cycle and the aging test conditions are determined as the cycle test parameters.

8. A silicone rubber aging test device, characterized in that: include: A test parameter determination module, used to determine the cycle test parameters of the preset aging factors corresponding to the actual application environment according to the preset actual application environment of the target silicone rubber; An acceleration factor determination module, used to determine the acceleration factor of the aging test according to the cycle test parameters and a preset calculation method; A loss parameter determination module, used for performing a thermogravimetric analysis on the target silicone rubber according to the cycle test parameters to determine the mass loss parameter of the target silicone rubber; The test result determination module is used to determine the aging test result according to the elongation at break of the target silicone rubber, the acceleration factor and the mass loss parameter.

9. An electronic device, characterized in that: include: processor; A memory storing a computer program, when the computer program is executed by the processor, enables the processor to execute the aging test method for silicone rubber according to any one of claims 1 to 7.

10. A non-transitory computer-readable storage medium, characterized in that: Computer-readable instructions are stored thereon, and when the instructions are executed by a processor, the processor executes the aging test method for silicone rubber according to any one of claims 1 to 7.

Images