Aging test device for polytetrafluoroethylene oil-resistant rubber

Abstract

The utility model discloses an aging test device for polytetrafluoroethylene oil-resistant rubber, and relates to the technical field of rubber detection equipment, in particular to the aging test device for the polytetrafluoroethylene oil-resistant rubber, which comprises a box body and a stretching part, the partition plate divides the inner cavity of the box body into a test cavity and an equipment cavity from top to bottom; the stretching part is mounted on the partition plate; according to the utility model, by arranging the stretching part, the polytetrafluoroethylene oil-resistant rubber sample can be in a stretching state in the testing process, so that the possible mechanical action of the rubber in the actual use can be simulated. Through the tensile state test simulating the actual use condition, the problem that the deviation between the test result and the actual use condition is large in the prior art can be effectively solved, and the accuracy and the reliability of the rubber aging test are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the technical field of rubber testing equipment, specifically a polytetrafluoroethylene (PTFE) oil-resistant rubber aging test device. Background Technology

[0002] In the industrial sector, PTFE oil-resistant rubber is widely used in critical components such as seals and conveyors. However, under prolonged contact with oily media and complex operating conditions, its performance gradually deteriorates, affecting the safe and stable operation of equipment. Most existing aging testing devices can only simulate single environmental factors, making it difficult to accurately simulate actual complex operating conditions, leading to discrepancies between test results and actual aging conditions. Therefore, there is an urgent need to develop a testing device that can simultaneously simulate multiple aging influencing factors and accurately evaluate the aging performance of PTFE oil-resistant rubber to ensure its reliability and safety in practical applications. For example, in a published Chinese patent application (publication number: CN219799167U, patent title: A Rubber Ozone Aging Test Chamber), the existing technology suffers from the aforementioned problems in its implementation.

[0003] The existing technology uses a clamp to hold the rubber during implementation. This clamp can only hold and fix the rubber, but cannot stretch it. The rubber is in a non-stretched state, which means that the rubber cannot simulate actual working conditions during the aging test, resulting in a certain deviation between the test results and actual working conditions. At the same time, the use of a clamp to hold the rubber in this existing technology can easily cause damage to the clamping parts of the rubber during the test, affecting the test accuracy. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a polytetrafluoroethylene (PTFE) oil-resistant rubber aging test device, which solves the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a polytetrafluoroethylene (PTFE) oil-resistant rubber aging test device, comprising a housing and a tensile component. A partition is fixedly installed on the inner side wall of the housing, dividing the internal cavity of the housing into a test chamber and an equipment chamber from top to bottom. The tensile component is mounted on the partition. The tensile component includes a motor, a rotating disk, a support frame, a threaded rod, and two tensile plates. The rotating disk longitudinally penetrates the partition and is rotatably connected to it. The motor is fixedly installed in the equipment chamber of the housing, and its output shaft is connected to the rotating disk. The support frame is fixedly installed on the rotating disk, and the threaded rod is rotatably installed on the support frame. Two threaded areas with opposite thread orientations are engraved on the outer side wall of the threaded rod. The two threaded areas of the threaded rod penetrate the two tensile plates respectively, and are threadedly connected to the two tensile plates respectively. The threaded rod drives the two tensile plates to move closer or further apart. Multiple support bars are fixedly connected to one side wall of each tensile plate, and the edges of the support bars are rounded.

[0008] Optionally, the tensioning component further includes a handle, which is fixedly mounted on the upper end of the threaded rod.

[0009] Optionally, the support frame includes two guide rods and two support plates. The two ends of the guide rods are fixedly connected to the ends of the two support plates, and the two guide rods and the two support plates are fixedly connected to form a U-shaped frame structure; one of the support plates is fixedly installed on the rotating disk.

[0010] Optionally, the support plate and the tension plate are arranged in parallel longitudinal direction, and multiple support strips are also fixedly connected to one side wall of the support plate.

[0011] Optionally, a control board is fixedly installed on the enclosure, an ozone generator is installed inside the equipment cavity of the enclosure, an ozone tube is installed at the ozone outlet of the ozone generator and the two are connected, the ozone tube passes through the partition, and the outlet of the ozone tube is connected to the test cavity of the enclosure; an ozone sensor is installed inside the test cavity of the enclosure.

[0012] Optionally, a hood is fixedly installed on the top wall of the enclosure, and an exhaust fan and a degassing fan are installed inside the hood. An exhaust pipe is fixedly installed at the air inlet end of the exhaust fan and the two are connected. A first solenoid valve is installed on the exhaust pipe, and the air inlet end of the exhaust pipe is connected to the test chamber of the enclosure. An exhaust pipe is fixedly installed at the exhaust end of the degassing fan and the two are connected. A second solenoid valve is installed on the exhaust pipe, and the outlet end of the exhaust pipe is connected to the test chamber of the enclosure.

[0013] Optionally, the control board is connected to the ozone generator, ozone sensor, motor, exhaust fan, ventilator, first solenoid valve, and second solenoid valve respectively.

[0014] Optionally, a first door is installed in the test chamber of the enclosure, and a second door is installed in the equipment chamber of the enclosure.

[0015] (III) Beneficial Effects

[0016] This invention provides a polytetrafluoroethylene (PTFE) oil-resistant rubber aging test device, which has the following beneficial effects:

[0017] 1. This invention, by incorporating a tensile component, allows the PTFE oil-resistant rubber sample to be in a tensile state during testing, thereby simulating the mechanical forces that rubber may experience in actual use. This design makes the test results closer to the aging conditions of rubber under real-world usage environments, enabling a more accurate assessment of the rubber's ozone aging resistance. For example, in applications such as automotive seals and aerospace rubber components, rubber often needs to withstand certain tensile stresses. The tensile component of this invention can simulate this stress state, providing a more reliable basis for evaluating the performance of rubber under actual working conditions. Furthermore, by precisely controlling the tensile elongation, the influence of different tensile stresses on the aging performance of rubber can be studied, providing data support for the design and optimization of rubber products. This tensile state test, simulating actual usage conditions, effectively solves the problem of large deviations between test results and actual usage conditions in existing technologies, significantly improving the accuracy and reliability of rubber aging tests.

[0018] 2. The tensile component of this invention, through the design of a threaded rod and a tensile plate, enables uniform stretching of the sample, avoiding sample damage caused by clamping in existing technologies. The rounded edges of the support bar further reduce mechanical damage to the sample, ensuring its integrity during testing. This design not only improves testing accuracy but also extends the sample's lifespan and reduces test deviations caused by sample damage. Precise control of the stretching process ensures the sample remains in good condition throughout the test, resulting in more accurate test results. This design significantly improves the reliability and repeatability of the test, providing more accurate data support for the study of rubber aging properties. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural schematic diagram of an aging test device for polytetrafluoroethylene oil-resistant rubber according to the present invention;

[0021] Figure 2 This is a three-dimensional structural diagram (with the first and second chamber doors open) of a polytetrafluoroethylene oil-resistant rubber aging test device according to the present invention.

[0022] Figure 3 This is a three-dimensional structural diagram of the tensile component in a polytetrafluoroethylene oil-resistant rubber aging test device of this utility model.

[0023] Figure 4 This is a cross-sectional view of the wind shield in the polytetrafluoroethylene oil-resistant rubber aging test device of this utility model.

[0024] In the diagram: 1. Box body; 2. First box door; 3. Second box door; 4. Control panel; 5. Fan hood; 6. Ozone generator; 7. Ozone tube; 8. Partition plate; 9. Ozone sensor; 10. Test chamber; 11. Equipment chamber; 12. Guide rod; 13. Support plate; 14. Threaded rod; 15. Handle; 16. Tension plate; 17. Support bar; 18. Rotary disk; 19. Motor; 20. Exhaust fan; 21. Exhaust pipe; 22. First solenoid valve; 23. Extraction pipe; 24. Second solenoid valve. Detailed Implementation

[0025] The technical solution of this utility model will now be clearly and completely described in conjunction with the accompanying drawings. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying anything.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0027] Please see Figures 1 to 4This utility model provides a technical solution: an aging test device for polytetrafluoroethylene (PTFE) oil-resistant rubber, comprising a housing 1 and a tensile component. A partition 8 is fixedly installed on the inner side wall of the middle part of the housing 1, dividing the internal cavity of the housing 1 from top to bottom into a test chamber 10 and an equipment chamber 11. This separation clearly defines the functional areas of the test chamber 10 and the equipment chamber 11, facilitating operation and maintenance, while also preventing interference from the equipment in the equipment chamber 11 to the sample in the test chamber 10 during the test.

[0028] The tensioning component is mounted on the partition 8. The tensioning component includes a motor 19, a rotating disk 18, a support frame, a threaded rod 14, and two tensioning plates 16. The rotating disk 18 longitudinally penetrates the partition 8 and is rotatably connected to it. The motor 19 is fixedly mounted inside the equipment cavity 11 of the housing 1, and its output shaft is connected to the rotating disk 18. The support frame is fixedly mounted on the rotating disk 18, and the threaded rod 14 is rotatably mounted on the support frame. Two threaded areas with opposite thread orientations are engraved on the outer wall of the threaded rod 14. These two threaded areas penetrate the two tensioning plates 16 respectively, and are threadedly connected to the two tensioning plates 16. The threaded rod 14 drives the two tensioning plates 16 to move closer or further apart. Multiple support bars 17 are fixedly connected to one side wall of each tensioning plate 16, and the edges of each support bar 17 are rounded.

[0029] The support bars 17 are used to stretch the ring-shaped specimen made of PTFE oil-resistant rubber. The PTFE oil-resistant rubber ring is fitted onto two support bars 17 (which are located on two tension plates 16). When the threaded rod 14 rotates, it pushes the two tension plates 16 away from each other, which in turn causes the two corresponding support bars 17 to move away from each other, stretching the PTFE oil-resistant rubber ring and keeping it in a stretched state. The motor 19 includes, but is not limited to, a servo motor. The motor 19 drives the rotating disk 18 to rotate, which in turn drives the support frame to rotate. The motor 19 can stably drive the rotating disk 18 to rotate, thereby causing the entire support frame to rotate. The support frame drives the threaded rod 14, the two tension plates 16, and each support bar 17 to rotate, simultaneously causing the PTFE oil-resistant rubber ring specimen on the support bars 17 to rotate. The rotation of the threaded rod 14 can drive the two tension plates 16 to move closer or further apart, thus achieving the stretching and release of the specimen. Multiple support bars 17 are fixedly connected to one side wall of each tensile plate 16, and the edges of each support bar 17 are rounded. The support bars 17 are used to support the specimen, and the rounded corners reduce mechanical damage to the specimen and ensure the integrity of the specimen during the test.

[0030] Specifically, the tensioning component also includes a handle 15, which is fixedly mounted on the upper end of the threaded rod 14.

[0031] The handle 15 is designed to allow operators to manually rotate the threaded rod 14, thereby achieving precise adjustment of the position of the tensile plate 16. In actual operation, the operator can control the movement speed and distance of the tensile plate 16 by rotating the handle 15, thus precisely controlling the degree of tensile stress of the PTFE oil-resistant rubber sample. This manual adjustment method is not only easy to operate but also meets different testing needs, improving testing flexibility. Note that the handle 15 cannot rotate on its own without manual operation.

[0032] Specifically, the support frame includes two guide rods 12 and two support plates 13. The two ends of the guide rods 12 are fixedly connected to the ends of the two support plates 13, respectively. The two guide rods 12 and the two support plates 13, after being fixedly connected, form a U-shaped frame structure. One support plate 13 is fixedly installed on the rotating disk 18. The support plate 13 and the tension plate 16 are arranged longitudinally parallel, and multiple support strips 17 are also fixedly connected to one side wall of the support plate 13.

[0033] The support frame provides stable support and guidance for the threaded rod 14 and the tension plate 16, ensuring the tension plate 16 remains stable during movement and preventing uneven stretching of the specimen due to swaying or tilting. The U-shaped structure design of the guide rod 12 and support plate 13 not only improves the overall strength of the support frame but also provides a precise guiding path for the movement of the tension plate 16, ensuring the stability and reliability of the stretching process. Simultaneously, support bars 17 are also provided on the support plate 13, further increasing the stability of the specimen during the stretching process and preventing displacement or twisting. The support bars 17 on the support plate 13 can also be used to fix the specimen during stretching.

[0034] Specifically, a control board 4 is fixedly installed on the housing 1. An ozone generator 6 is installed inside the equipment cavity 11 of the housing 1. An ozone tube 7 is installed at the ozone outlet of the ozone generator 6, and the two are connected. The ozone tube 7 passes through the partition 8, and the outlet of the ozone tube 7 is connected to the test cavity 10 of the housing 1. An ozone sensor 9 is installed inside the test cavity 10 of the housing 1.

[0035] The ozone generator 6 produces ozone gas, providing the necessary ozone environment for the rubber aging test. The ozone tube 7 delivers the ozone generated by the ozone generator 6 into the test chamber 10, ensuring the sample is fully exposed to the ozone environment. The ozone sensor 9 monitors the ozone concentration within the test chamber 10 in real time and feeds the monitoring data back to the control board 4. Based on the preset ozone concentration value and the data from the sensor, the control board 4 automatically controls the operation of the ozone generator 6, thereby achieving precise control of the ozone concentration. This automatic control method not only improves the accuracy and stability of ozone concentration control but also reduces manual intervention, increasing the automation and efficiency of the test.

[0036] More specifically, a fan hood 5 is fixedly installed on the top wall of the housing 1. An exhaust fan 20 and a suction fan are installed inside the fan hood 5. An exhaust pipe 21 is fixedly installed at the air inlet of the exhaust fan 20, and the two are connected. A first solenoid valve 22 is installed on the exhaust pipe 21, and the air inlet of the exhaust pipe 21 is connected to the test chamber 10 of the housing 1. An extraction pipe 23 is fixedly installed at the exhaust end of the suction fan, and the two are connected. A second solenoid valve 24 is installed on the extraction pipe 23, and the outlet of the extraction pipe 23 is connected to the test chamber 10 of the housing 1.

[0037] The exhaust fan 20 and the extraction fan inside the hood 5 are used to control the airflow and temperature within the test chamber 10. The exhaust fan 20 discharges waste gas from the test chamber 10 through the exhaust pipe 21, while the extraction fan draws fresh outside air into the test chamber 10 through the extraction pipe 23, thus achieving gas circulation and renewal within the test chamber 10. The first solenoid valve 22 and the second solenoid valve 24 are used to control the opening and closing of the exhaust pipe 21 and the extraction pipe 23, respectively. Precise control of the airflow within the test chamber 10 can be achieved by controlling the solenoid valves through the control board 4. This design not only effectively removes harmful gases generated during the test but also maintains stable temperature and air pressure within the test chamber 10, providing favorable environmental conditions for rubber aging testing.

[0038] Specifically, a first door 2 is installed at the test chamber 10 of the housing 1, and a second door 3 is installed at the equipment chamber 11 of the housing 1.

[0039] The first door 2 and the second door 3 facilitate the operation and maintenance of the equipment inside the test chamber 10 and the equipment chamber 11 by the operators. At the same time, the four edges of the first door 2 and the second door 3 are sealed (such as by setting sealing gaskets) to ensure the airtightness of the test chamber 10 and the equipment chamber 11 during the test, preventing external gases from entering and affecting the test results; and preventing internal ozone leakage from affecting the test results.

[0040] Specifically, the control board 4 is connected to the ozone generator 6, ozone sensor 9, motor 19, exhaust fan 20, ventilator, first solenoid valve 22, and second solenoid valve 24 for control (including electrical connection).

[0041] The control board 4 includes, but is not limited to, a programmable logic controller (PLC), an industrial computer, or a microprocessor. It contains logic control and timing control programs to meet the automated control needs of the ozone generator 6, ozone sensor 9, motor 19, exhaust fan 20, ventilator, first solenoid valve 22, and second solenoid valve 24, and to facilitate parameter adjustments during the automated control process. The exhaust fan 20 is used to expel ozone from the test chamber 10 of the housing 1. The ventilator draws outside air into the test chamber 10 of the housing 1 to balance the air pressure inside and outside the test chamber 10. As the control center of the entire testing device, the control board 4 achieves automated control of the entire testing process through control connections with various devices. The control board 4 can automatically control the operation of the ozone generator 6, motor 19, exhaust fan 20, ventilator, and other equipment based on preset test parameters and sensor feedback data, thereby achieving precise control of the testing process. This automated control method not only improves the efficiency and accuracy of testing, but also reduces errors from manual operation and increases the reliability of test results.

[0042] In use, the PTFE oil-resistant rubber sample is first placed on the two corresponding support bars 17 of the tensile component. Rotating the handle 15 rotates the threaded rod 14, which pushes the two tensile plates 16 away from each other, thus stretching the sample. Then, the ozone generator 6 is activated via the control panel 4, introducing ozone gas into the test chamber 10. The motor 19 is then started, driving the rotating disk 18 to rotate. The rotating disk 18 drives the support frame to rotate, thus placing the sample in a rotating state, ensuring full contact between the stretched PTFE oil-resistant rubber sample and the ozone.

[0043] During the test, ozone sensor 9 monitors the ozone concentration in the test chamber 10 in real time and feeds the data back to control board 4. Control board 4 automatically adjusts the operation of ozone generator 6 according to the preset ozone concentration value (the required ozone concentration value varies for different specifications, so the ozone concentration value will not be elaborated here) to ensure the stability of the ozone concentration. Through this tensile state test simulating actual use conditions and a precisely controlled ozone environment, the ozone aging resistance of PTFE oil-resistant rubber can be evaluated more accurately, providing reliable data support for the quality control, performance evaluation, and life prediction of rubber products.

[0044] Specific operating steps: Sample preparation: Prepare the polytetrafluoroethylene (PTFE) oil-resistant rubber into a ring of the specified size. The sample should be protected from mechanical damage and contamination. Place the prepared sample in a standard environment with a temperature of (23±2)℃ and a relative humidity of (50±5)% for at least 16 hours to eliminate internal stress generated during processing and ensure the accuracy of the test results. Simultaneously, wipe the sample surface with a lint-free cloth to remove any oil, dust, or other impurities that may be present, preventing them from affecting the reaction between ozone and the rubber.

[0045] Sample Installation: Open the first chamber door 2 and install the sample on the support bar 17 of the tensile component. Rotate the handle 15 to rotate the threaded rod 14, which pushes the two tensile plates 16 away from each other, thus stretching the sample. The tensile elongation can be precisely controlled according to testing requirements, generally set to 20% or other specified values ​​to simulate the stress conditions of rubber in actual use.

[0046] Test parameter settings: Test parameters, such as ozone concentration, sample elongation, and rotation speed, are set via control panel 4. Ozone gas is introduced into chamber 1, and the ozone concentration is set to 50 pphm (1 pphm = 1 μg / m³). Motor 19 is turned on, driving the support frame to rotate, causing the support frame to continuously rotate the sample at a speed of (20 - 25) r / min, ensuring that the sample surface is uniformly exposed to the ozone environment.

[0047] Aging Test: An aging test is conducted according to the set parameters. The test duration is determined based on specific requirements, typically 24 hours, 48 ​​hours, or 96 hours. During the test, parameters such as ozone concentration are monitored in real time to ensure they remain within the specified range. If any abnormal parameters occur, the equipment is adjusted promptly, and the abnormal situation and handling measures are recorded.

[0048] Performance Evaluation: After the test, the sample was removed and placed in a standard environment for 30 minutes. After the sample surface temperature returned to room temperature, the sample surface was observed using an optical microscope (magnification 50-100x), and the cracking was recorded, including the crack initiation location, length, width, and density. Simultaneously, image analysis software was used to quantitatively analyze the cracks on the sample surface, calculating the total crack area and average width. Physical property tests were performed on the aged sample, including tensile strength, elongation at break, and hardness. The physical property test results of the aged sample were compared with the performance data before aging, and the performance change rate was calculated using the formula: Performance Change Rate = [(Performance value after aging - Performance value before aging) / Performance value before aging] × 100%. The specific details of the performance evaluation steps are not elaborated further.

[0049] Through the above steps, this invention can effectively simulate the aging process of polytetrafluoroethylene oil-resistant rubber in actual use, provide accurate test results, and provide reliable data support for the quality control, performance evaluation and life prediction of rubber products.

[0050] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An aging test device for polytetrafluoroethylene (PTFE) oil-resistant rubber, characterized in that: Includes a housing (1) and a tensioning component. A partition (8) is fixedly installed on the inner side wall of the middle part of the housing (1). The partition (8) divides the internal cavity of the housing (1) into a test cavity (10) and an equipment cavity (11) from top to bottom. The stretching component is mounted on the partition (8); the stretching component includes a motor (19), a rotating disk (18), a support frame, a threaded rod (14), and two stretching plates (16). The rotating disk (18) extends longitudinally through the partition (8) and the two are rotatably connected. The motor (19) is fixedly mounted in the equipment cavity (11) of the housing (1), and the output shaft end of the motor (19) is connected to the rotating disk (18) for transmission. The support frame is fixedly mounted on the rotating disk (18), and the threaded rod (14) is rotatably mounted on the support frame. Two threaded areas with opposite thread orientations are engraved on the outer wall of the threaded rod (14). The two threaded areas of the threaded rod (14) respectively penetrate the two stretching plates (16), and the two threaded areas of the threaded rod (14) are threadedly connected to the two stretching plates (16) respectively. The threaded rod (14) drives the two stretching plates (16) to move closer to or further away from each other. Each of the stretching plates (16) has multiple support bars (17) fixedly connected to one side wall, and each edge of the support bar (17) is rounded.

2. The aging test device for polytetrafluoroethylene oil-resistant rubber according to claim 1, characterized in that: The tensioning component also includes a handle (15), which is fixedly mounted on the upper end of the threaded rod (14).

3. The aging test device for polytetrafluoroethylene oil-resistant rubber according to claim 1, characterized in that: The support frame includes two guide rods (12) and two support plates (13). The two ends of the guide rods (12) are fixedly connected to the ends of the two support plates (13) respectively. The two guide rods (12) and the two support plates (13) form a U-shaped frame structure after being fixedly connected. One of the support plates (13) is fixedly installed with the rotating disk (18).

4. The aging test device for polytetrafluoroethylene oil-resistant rubber according to claim 3, characterized in that: The support plate (13) and the tension plate (16) are arranged in parallel longitudinally, and multiple support strips (17) are also fixedly connected to one side wall of the support plate (13).

5. The aging test device for polytetrafluoroethylene oil-resistant rubber according to claim 1, characterized in that: A control board (4) is fixedly installed on the housing (1). An ozone generator (6) is installed in the equipment cavity (11) of the housing (1). An ozone tube (7) is installed at the ozone outlet of the ozone generator (6) and the two are connected. The ozone tube (7) passes through the partition (8) and the outlet of the ozone tube (7) is connected to the test cavity (10) of the housing (1). An ozone sensor (9) is installed in the test cavity (10) of the housing (1).

6. The aging test device for polytetrafluoroethylene oil-resistant rubber according to claim 5, characterized in that: A hood (5) is fixedly installed on the top wall of the housing (1). An exhaust fan (20) and a blower are installed inside the hood (5). An exhaust pipe (21) is fixedly installed at the air inlet end of the exhaust fan (20) and the two are connected. A first solenoid valve (22) is installed on the exhaust pipe (21). The air inlet end of the exhaust pipe (21) is connected to the test chamber (10) of the housing (1). An exhaust pipe (23) is fixedly installed at the exhaust end of the blower and the two are connected. A second solenoid valve (24) is installed on the exhaust pipe (23). The outlet end of the exhaust pipe (23) is connected to the test chamber (10) of the housing (1).

7. The aging test device for polytetrafluoroethylene oil-resistant rubber according to claim 1, characterized in that: The test chamber (10) of the housing (1) is equipped with a first door (2), and the equipment chamber (11) of the housing (1) is equipped with a second door (3).

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