Test method of rubber material and related equipment

Abstract

The invention discloses a test method of a rubber material and related equipment, relates to a rubber tolerance test, and mainly aims to solve the problem that a more accurate evaluation method for the environment resistance of a rubber material for automobile sealing is lacked at present. The method comprises the following steps: immersing the rubber material into ethylene glycol cooling liquid; adjusting an environmental box where the rubber material is located based on preset environmental data; and recording the hardness value and permanent deformation of the rubber material in the ethylene glycol cooling liquid along with the change of the preset environmental data in real time. The device is used for the test process of the rubber material.

Description

Technical Field

[0001] The invention relates to a rubber tolerance test, and in particular to a test method for rubber materials and related equipment. Background Art

[0002] Automobile rubber seals are an important part of automobile rubber parts and are key parts that affect automobile technology and performance. In actual use, heat, oxygen and ozone in the air, sunlight, wind, rain, snow, moisture, various mechanical stresses during use, or erosion by chemical solvents damage the chemical structure of rubber, causing it to become soft or brittle and cracked, with a rough surface and reduced mechanical properties, and gradually lose its use value over time.

[0003] However, there is currently a lack of a more accurate evaluation method for the environmental resistance of rubber materials used in automotive sealing. Summary of the invention

[0004] In view of the above problems, the present invention provides a test method for rubber materials and related equipment, the main purpose of which is to solve the problem of the lack of a more accurate evaluation method for the environmental resistance of rubber materials for automotive sealing.

[0005] In order to solve at least one of the above technical problems, in a first aspect, the present invention provides a method for testing a rubber material, the method comprising:

[0006] immersing the rubber material in ethylene glycol coolant;

[0007] adjusting the environmental chamber in which the rubber material is located based on preset environmental data;

[0008] The hardness value and permanent deformation of the rubber material in the ethylene glycol coolant as the preset environmental data change are recorded in real time.

[0009] Optionally, the real-time recording of the hardness value and permanent deformation of the rubber material in the ethylene glycol coolant as the preset environmental data change, includes:

[0010] In the first test box, the hardness value of the rubber material in the ethylene glycol coolant according to the preset environmental data is recorded in real time based on the hardness pressure needle;

[0011] at the same time,

[0012] In the second test box, the deformation amount of the rubber material in the ethylene glycol coolant changing with the preset environmental data is recorded in real time based on the pressing plate.

[0013] Optionally, in the second test box, the deformation amount of the rubber material in the ethylene glycol coolant changing with preset environmental data is recorded in real time based on the pressing plate, including:

[0014] Acquiring initial volume data of the rubber material;

[0015] Recording second volume data of the rubber material after being compressed to a preset thickness and then released under a preset environment in ethylene glycol coolant;

[0016] The deformation amount is determined based on the initial volume data and the second volume data.

[0017] Optionally, the above method further includes:

[0018] Obtaining an initial load of the rubber material, wherein the initial load is a load when the rubber material is compressed to a preset thickness in an original state;

[0019] Obtain load variation data when the rubber material is compressed to a preset thickness in ethylene glycol coolant and under a preset environment.

[0020] Optionally, adjusting the environmental box where the rubber material is located based on preset environmental data includes:

[0021] The preset environmental data is determined based on a preset cycle to adjust the environmental box where the rubber material is located.

[0022] Optionally, the preset cycle includes:

[0023] In the first stage, the temperature is -40℃ to 80℃ and the time is 30min.

[0024] The second stage, the temperature is 80℃, the time is 60min,

[0025] The third stage, the temperature is 80℃ to 125℃, the time is 15min,

[0026] The fourth stage, the temperature is 125℃, the time is 120min,

[0027] The fifth stage, the temperature is 125℃ to 25℃, the time is 35min,

[0028] The sixth stage, the temperature is 25℃ to -40℃, the time is 30min,

[0029] In the seventh stage, the temperature is reduced to -40°C and the time is 120 minutes.

[0030] Optionally, the above method further includes:

[0031] Before the test, press the hardness indenter into contact with the bottom support plate until the hardness value reaches 100I RHD.

[0032] In a second aspect, an embodiment of the present invention further provides a testing device for rubber materials, comprising:

[0033] A control unit, used for immersing the rubber material in ethylene glycol coolant;

[0034] An adjustment unit, used for adjusting the environmental box where the rubber material is located based on preset environmental data;

[0035] The recording unit is used to record in real time the hardness value and permanent deformation of the rubber material in the ethylene glycol coolant as the preset environmental data change.

[0036] To achieve the above object, according to a third aspect of the present invention, a computer-readable storage medium is provided, wherein the computer-readable storage medium includes a stored program, wherein when the program is executed by a processor, the steps of the above-mentioned rubber material testing method are implemented.

[0037] In order to achieve the above-mentioned purpose, according to a fourth aspect of the present invention, there is provided an electronic device, comprising at least one processor and at least one memory connected to the processor; wherein the processor is used to call program instructions in the memory to execute the steps of the above-mentioned rubber material testing method.

[0038] Through the above technical scheme, the test method and related equipment of rubber materials provided by the present invention solve the problem that there is currently a lack of a more accurate evaluation method for the environmental resistance of rubber materials for automobile sealing. The present invention immerses the rubber material in ethylene glycol coolant; adjusts the environmental box where the rubber material is located based on preset environmental data; and records in real time the hardness value and permanent deformation of the rubber material in ethylene glycol coolant as the preset environmental data changes. In the above scheme, the actual use environment of the automobile is simulated by combining the influencing factors of high temperature, low temperature, and chemical medium to find the optimal combination; during the environmental change process, by applying a certain load force on the sample, coolant can be added, and as the ambient temperature changes, the deformation and hardness of the sample are recorded in real time, thereby simulating the change trend of the sealing performance of the rubber material of the cooling water pipe under the actual use conditions of the automobile. At the same time, during and after the environmental change process, the deformation and hardness of the sample are monitored and measured in real time by automatic measurement.

[0039] Correspondingly, the rubber material testing device, equipment and computer-readable storage medium provided by the embodiments of the present invention also have the above-mentioned technical effects.

[0040] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented according to the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0042] Figure 1 A schematic flow chart of a rubber material testing method provided by an embodiment of the present invention is shown;

[0043] Figure 2 A schematic diagram of a test box structure of a rubber material provided by an embodiment of the present invention is shown;

[0044] Figure 3 The Shore hardness recording diagram of an embodiment and a comparative example provided by an embodiment of the present invention is shown;

[0045] Figure 4 A schematic block diagram showing the composition of a rubber material testing device provided by an embodiment of the present invention is shown;

[0046] Figure 5 A schematic block diagram of the composition of an electronic device for testing rubber materials provided by an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0047] The exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present invention and to enable the scope of the present invention to be fully communicated to those skilled in the art.

[0048] In order to solve the problem that there is currently a lack of a more accurate evaluation method for the environmental resistance of rubber materials for automotive seals, an embodiment of the present invention provides a test method for rubber materials, such as Figure 1 As shown, the method includes:

[0049] S101, immersing the rubber material in ethylene glycol coolant;

[0050] For example, ethylene glycol coolant is used as an antifreeze for automobiles. Its addition can significantly reduce the freezing point of water, prevent the cooling system from freezing in low-temperature environments, and thus protect the engine and other cooling system components from damage. However, during the operation of the automobile engine, the coolant, as a cooling medium, needs to be stored and circulated in a cooling water pipe made of rubber material, which may cause the ethylene glycol coolant to contact the rubber material. Therefore, one of the conditions of this test is to immerse the rubber material in the ethylene glycol coolant.

[0051] like Figure 2 As shown, the present application also provides a test box for rubber materials:

[0052] The above test box consists of two layers, the upper and lower layers, the temperature adjustment range is -40°C to 180°C, and the relative humidity adjustment range is 10%RH to 98%RH.

[0053] Specifically, a Shore A hardness tester can be installed on the top of the upper box body to measure the hardness value, and the diameter of the metal screw is 2cm. A metal plate for fixing the rubber sample can be installed at the bottom, and the metal plate is 1cm thick, 10cm long and wide. A metal container is designed on the bottom metal plate, which is container 1, with a length and width of 8cm and a height of 5cm. The Shore A hardness tester tester can pass through the center of the upper cover plate, and the other parts are sealed. The relative movement between the hardness tester and the sample is controlled by the microcomputer of the environmental chamber, and a fixed load can be applied, and the measured hardness value can be displayed on the screen in real time.

[0054] The lower box is composed of a circular stainless steel metal plate, which is used to measure the compression permanent deformation. The diameter of the metal screw is 2cm. The metal plate is 1cm thick, and the length and width are 10cm. The upper end is fixed, and the lower end is controlled by the environmental chamber microcomputer and can move up and down. The distance between the two circular plates can be accurately adjusted to 4-12mm. A metal container is designed on the bottom metal plate, which is container 2, with a length, width and height of 15cm and 5cm. The upper cover is composed of two parts, left and right. After the upper plate contacts the rubber sample, the left and right parts can be connected into a whole. The metal screw can pass through the center part, and the other parts are sealed.

[0055] The test chamber based on the above rubber material can realize an environmental chamber with adjustable temperature. A certain load can be applied to the sample inside the chamber, and coolant can be added. As the ambient temperature changes, the deformation and hardness of the sample are recorded in real time, thereby simulating the changing trend of the sealing performance of the rubber material of the cooling water pipe under the actual use conditions of the automobile.

[0056] S102, adjusting the environmental box where the rubber material is located based on preset environmental data;

[0057] The above step S102 further includes S1021: determining the preset environmental data based on a preset cycle to adjust the environmental box where the rubber material is located.

[0058] For example, in the industry, the weather resistance and reliability weather resistance test items of rubber materials and products mainly include hot air aging, UV aging, xenon lamp aging, coolant resistance, etc., all of which are single environmental conditions or media. In the actual use scenario of the vehicle, the external environment and the internal temperature field of the cabin are changing in real time. The most common is that the temperature in the cabin rises during driving; in parking mode, the temperature in the cabin drops from high temperature to ambient temperature. Therefore, this application designs a high and low temperature alternating environment to simulate the actual vehicle usage scenario of users.

[0059] Based on the above scheme, the actual use environment of the car is simulated by combining the influencing factors of high temperature, low temperature and chemical medium to find the best combination.

[0060] In one embodiment, the preset cycle includes:

[0061] In the first stage, the temperature is -40℃ to 80℃ and the time is 30min.

[0062] The second stage, the temperature is 80℃, the time is 60min,

[0063] The third stage, the temperature is 80℃ to 125℃, the time is 15min,

[0064] The fourth stage, the temperature is 125℃, the time is 120min,

[0065] The fifth stage, the temperature is 125℃ to 25℃, the time is 35min,

[0066] The sixth stage, the temperature is 25℃ to -40℃, the time is 30min,

[0067] In the seventh stage, the temperature is reduced to -40°C and the time is 120 minutes.

[0068] The above preset cycle settings simulate the specific scenario of vehicle driving in extremely cold areas. That is, after the vehicle is parked overnight, it is started, and as the engine starts to work, the engine temperature gradually rises. As the vehicle drives, the temperature rises further. After driving for a period of time, the vehicle is turned off, the engine stops working, and the engine temperature gradually drops. By simulating this operating condition, the changes in the environment of the coolant and the cooling water pipe during the engine start, operation and stop process can be more realistically reflected. Based on the above scheme, the actual use environment of the automotive cooling hose is simulated by using high and low temperature alternating conditions and immersing the sample block in the coolant, thereby optimizing the reliability of the test results and the detection rate of leakage problems.

[0069] S103, recording in real time the hardness value and permanent deformation of the rubber material in ethylene glycol coolant as the preset environmental data change.

[0070] For example, the above data records use automatic measurement to monitor and measure the deformation and hardness of the sample in real time. And because the microcomputer-controlled automatic measurement method is used, the error of manual measurement is reduced and the accuracy of the measurement results is improved.

[0071] The above step S103 also includes S1031, S1032, S1033 and S1034:

[0072] S1031. Before the test, press the hardness indenter down to contact the bottom support plate until the hardness value reaches 100I RHD.

[0073] Based on the above scheme, the hardness tester is calibrated and zeroed before the sample is installed. The hardness tester indenter is moved downward by computer control until it contacts the bottom metal plate until the displayed hardness value is 100I RHD.

[0074] S1032. Obtain an initial load of the rubber material, wherein the initial load is the load of the rubber material when it is compressed to a preset thickness in an original state; obtain load change data when the rubber material is compressed to a preset thickness in ethylene glycol coolant and under a preset environment.

[0075] First, install the rubber sample for measuring hardness on the upper box, control the hardness tester's pressure needle to move downward, measure the initial hardness of the rubber sample, and record the test load on the pressure needle, which is used as the initial load.

[0076] Furthermore, ethylene glycol coolant is injected into the container 1 of the upper box to immerse the rubber sample. The test box is operated according to the above preset cycle, and the hardness measurement value of the sample is recorded in real time by keeping the load unchanged during the operation. The consistency of the measurement results is ensured by the fixed load measurement and real-time monitoring. The change of the hardness of the sample during the whole test process is measured, which is helpful to predict the change of material performance and failure trend.

[0077] Specifically, the diameter of the rubber sample may range from 12.5 mm to 29.5 mm, and the thickness of the rubber sample may range from at least 6 mm to 13 mm.

[0078] S1033, the real-time recording of the hardness value and permanent deformation of the rubber material in the ethylene glycol coolant as the preset environmental data change, including:

[0079] In the first test box, the hardness value of the rubber material in the ethylene glycol coolant according to the preset environmental data is recorded in real time based on the hardness pressure needle;

[0080] at the same time,

[0081] In the second test box, the deformation amount of the rubber material in the ethylene glycol coolant changing with the preset environmental data is recorded in real time based on the pressing plate.

[0082] Exemplarily, the present application takes into account that at high temperatures, thermochemical reactions also occur, causing changes in the internal structure of the rubber and permanent deformation. When compressed under low temperature conditions, the rubber mainly undergoes physical relaxation, and the molecular segments are arranged, oriented, and easily crystallized under the action of external forces. After the external force is released, the crystallized segments are not easy to return to their original state. Therefore, the deformation and hardness changes of the material should be a dynamic process. Therefore, the present application records the dynamic change data of the hardness value and the deformation amount in real time as the test progresses. Reduce the differences and limitations between the performance changes of automotive sealing rubber materials and the actual environment. Improve the accuracy of judging the performance of rubber materials.

[0083] Specifically, fix the sample on the lower plate of the lower box, record the initial position of the upper plate, control the upper plate to move downward by computer, record the load and displacement distance after the sample is compressed to the specified thickness, and use this load as the initial load. Inject ethylene glycol coolant into container 2 of the lower box to immerse the rubber sample. Run the test box according to temperature and time.

[0084] It should be noted that the hardness value and deformation value tests are carried out simultaneously.

[0085] The reliability of the results is ensured by ensuring that the environment does not change during the entire test process. The automatic measurement method is used to reduce the error of the test results. Measuring the change in the hardness of the sample during the entire test process helps to predict the change in material properties and failure trends.

[0086] S1034, in the second test box, recording in real time based on the pressing plate the deformation amount of the rubber material in the ethylene glycol coolant changing with the preset environmental data, including:

[0087] Acquiring initial volume data of the rubber material;

[0088] Recording second volume data of the rubber material after being compressed to a preset thickness and then released under a preset environment in ethylene glycol coolant;

[0089] The deformation amount is determined based on the initial volume data and the second volume data.

[0090] For example, during the test, the distance between the two plates is kept constant, and the load change during the environmental change is measured in real time and displayed digitally on the screen. After the cycle is completed, the upper plate is moved upward, and after 30 minutes, the upper plate is moved downward again until it contacts the sample, and the displacement distance at this time is recorded to calculate the thickness of the sample, that is, the second volume data, and the compression permanent deformation of the sample is calculated by comparing the initial volume data and the second volume data.

[0091] By means of the above technical scheme, the test method of rubber material provided by the present invention solves the problem that there is currently a lack of a more accurate evaluation method for the environmental resistance of rubber materials for automobile sealing. The present invention immerses the rubber material in ethylene glycol coolant; adjusts the environmental box where the rubber material is located based on preset environmental data; and records in real time the hardness value and permanent deformation of the rubber material in ethylene glycol coolant as the preset environmental data changes. In the above scheme, the actual use environment of the automobile is simulated by combining the influencing factors of high temperature, low temperature, and chemical medium to find the optimal combination; during the environmental change process, by applying a certain load force on the sample, coolant can be added, and as the ambient temperature changes, the deformation and hardness of the sample are recorded in real time, thereby simulating the change trend of the sealing performance of the rubber material of the cooling water pipe under the actual use conditions of the automobile. At the same time, during and after the environmental change process, the deformation and hardness of the sample are monitored and measured in real time by automatic measurement.

[0092] like Figure 3 As shown, several specific embodiments provided by this application are shown below:

[0093] Example 1: An EPDM rubber material sample with an initial hardness of 70HA and a thickness of 12.5 mm was selected, and the compression permanent deformation and hardness of the rubber material were measured using the equipment, test method and environmental conditions of the present invention, and the intermediate process data were recorded in real time;

[0094] Example 2: An EPDM rubber material sample with an initial hardness of 85HA and a thickness of 6.3 mm was selected, and the compression permanent deformation and hardness of the rubber material were measured using the equipment, test method and environmental conditions of the present invention, and the intermediate process data were recorded in real time;

[0095] Comparative Example 1, according to GB / T 7759.1-2015 Determination of compression set of vulcanized rubber or thermoplastic rubber Part 1: Under normal temperature and high temperature conditions, under which only the compression set of rubber in a high temperature hot air environment is measured, an EPDM rubber material sample with an initial hardness of 70HA and a thickness of 12.5mm was selected, and the sample was fixed with a stopper and a stop block in the test standard, and kept in an environment of 125°C for 24 hours to measure the compression set of the rubber material;

[0096] Comparative Example 2, according to GB / T 7759.2-2014 Determination of compression set of vulcanized rubber or thermoplastic rubber Part 2: Under low temperature conditions, this condition only measures the compression set of rubber in a low temperature environment, select an EPDM rubber material sample with an initial hardness of 70HA and a thickness of 12.5mm, fix the sample with the stopper and stopper block in the test standard, keep it in an environment of -40°C for 24 hours, and measure the compression set of the rubber material;

[0097] The following is a table showing the parameters of the above examples and comparative examples:

[0098] Table 1 Parameter determination table

[0099]

[0100] Furthermore, as a response to the above Figure 1 In order to realize the method shown in the figure, the embodiment of the present invention also provides a testing device for rubber materials, which is used to test the above Figure 1 The device embodiment corresponds to the aforementioned method embodiment. For ease of reading, this device embodiment will not repeat the details of the aforementioned method embodiment one by one, but it should be clear that the device in this embodiment can correspond to all the contents of the aforementioned method embodiment. Figure 4 As shown, the device includes: a control unit 21, an adjustment unit 22 and a recording unit 23, wherein

[0101] A control unit 21, configured to immerse the rubber material in ethylene glycol coolant;

[0102] An adjustment unit 22, used for adjusting the environmental box where the rubber material is located based on preset environmental data;

[0103] The recording unit 23 is used to record in real time the hardness value and permanent deformation of the rubber material in the ethylene glycol coolant as the preset environmental data change.

[0104] The processor includes a kernel, which retrieves the corresponding program unit from the memory. One or more kernels can be set, and a test method for rubber materials can be implemented by adjusting kernel parameters, which can solve the problem of lack of a more accurate evaluation method for the environmental resistance of rubber materials used for automotive seals.

[0105] An embodiment of the present invention provides a computer-readable storage medium, wherein the computer-readable storage medium includes a stored program, and when the program is executed by a processor, the test method for the rubber material is implemented.

[0106] An embodiment of the present invention provides a processor, which is used to run a program, wherein the test method for the rubber material is executed when the program is run.

[0107] An embodiment of the present invention provides an electronic device, the electronic device comprising at least one processor and at least one memory connected to the processor; wherein the processor is used to call program instructions in the memory to execute the test method for rubber material as described above

[0108] An embodiment of the present invention provides an electronic device 30, such as Figure 5 As shown, the electronic device includes at least one processor 301, and at least one memory 302 and a bus 303 connected to the processor; wherein the processor 301 and the memory 302 communicate with each other through the bus 303; the processor 301 is used to call the program instructions in the memory to execute the above-mentioned test method for rubber materials.

[0109] The intelligent electronic devices in this article can be PCs, PADs, mobile phones, etc.

[0110] The present application also provides a computer program product, which, when executed on a process management electronic device, is suitable for executing a program that initializes the steps of the above-mentioned test method for rubber materials.

[0111] It should be noted that in the above embodiments, the description of each embodiment has its own emphasis, and for parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0112] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can adopt the form of complete hardware embodiments, complete software embodiments, or embodiments in combination with software and hardware. Moreover, the present application can adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD to ROM, optical storage, etc.) that include computer-usable program code.

[0113] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded computer, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0114] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0115] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0116] The present application also provides a computer program product, which includes computer software instructions. When the computer software instructions are executed on a processing device, the processing device is caused to execute the following Figure 1 This corresponds to the flow of control of the memory in the embodiment.

[0117] The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the process or function according to the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from a website site, a computer, a server or a data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium can be any available medium that a computer can store or a data storage device such as a server or a data center that includes one or more available media integration. The available medium can be a magnetic medium, (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid state drive (SSD)), etc.

[0118] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0119] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0120] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0121] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0122] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of each embodiment method of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk and other media that can store program code.

[0123] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some of the technical features therein by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for testing rubber materials, characterized in that: include: immersing the rubber material in ethylene glycol coolant; adjusting the environmental chamber in which the rubber material is located based on preset environmental data; The hardness value and permanent deformation of the rubber material in the ethylene glycol coolant as the preset environmental data change are recorded in real time.

2. The method according to claim 1, characterized in that The real-time recording of the hardness value and permanent deformation of the rubber material in the ethylene glycol coolant as the preset environmental data change includes: In the first test box, the hardness value of the rubber material in the ethylene glycol coolant according to the preset environmental data is recorded in real time based on the hardness pressure needle; at the same time, In the second test box, the deformation amount of the rubber material in the ethylene glycol coolant changing with the preset environmental data is recorded in real time based on the pressing plate.

3. The method according to claim 1, characterized in that In the second test box, the deformation amount of the rubber material in the ethylene glycol coolant changing with the preset environmental data is recorded in real time based on the pressing plate, including: Acquiring initial volume data of the rubber material; Recording second volume data of the rubber material after being compressed to a preset thickness and then released under a preset environment in ethylene glycol coolant; The deformation amount is determined based on the initial volume data and the second volume data.

4. The method according to claim 3, characterized in that Also includes: Obtaining an initial load of the rubber material, wherein the initial load is a load when the rubber material is compressed to a preset thickness in an original state; Obtain load variation data when the rubber material is compressed to a preset thickness in ethylene glycol coolant and under a preset environment.

5. The method according to claim 2, characterized in that: The step of adjusting the environmental box in which the rubber material is located based on preset environmental data includes: The preset environmental data is determined based on a preset cycle to adjust the environmental box where the rubber material is located.

6. The method according to claim 5, characterized in that The preset cycle includes: In the first stage, the temperature is -40℃ to 80℃ and the time is 30min. The second stage, the temperature is 80℃, the time is 60min, The third stage, the temperature is 80℃ to 125℃, the time is 15min, The fourth stage, the temperature is 125℃, the time is 120min, The fifth stage, the temperature is 125℃ to 25℃, the time is 35min, The sixth stage, the temperature is 25℃ to -40℃, the time is 30min, In the seventh stage, the temperature is reduced to -40°C and the time is 120 minutes.

7. The method according to claim 1, characterized in that Also includes: Before the test, press the hardness indenter down to contact the bottom support plate until the hardness value reaches 100IRHD.

8. A testing device for rubber materials, characterized in that: Also includes: A control unit, used for immersing the rubber material in ethylene glycol coolant; An adjustment unit, used for adjusting the environmental box where the rubber material is located based on preset environmental data; The recording unit is used to record in real time the hardness value and permanent deformation of the rubber material in the ethylene glycol coolant as the preset environmental data change.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored program, wherein when the program is executed by a processor, the steps of the rubber material testing method according to any one of claims 1 to 7 are implemented.

10. An electronic device, characterized in that: The electronic device includes at least one processor and at least one memory connected to the processor; wherein the processor is used to call program instructions in the memory to execute the steps of the rubber material testing method according to any one of claims 1 to 7.

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