Performance detection equipment for PVC polyester plasticized composite material

Abstract

The utility model relates to the field of performance detection, in particular to a PVC polyester plasticized composite material performance detection device which comprises a detection box, box doors are arranged on the side walls of the detection box, a clamping piece is arranged in the detection box and used for clamping a sample to be detected, and the clamping piece is provided with a telescopic driving piece and a rotating driving piece. The telescopic driving part is used for driving the clamping part to move in the detection box, and the rotating driving part is used for driving the clamping part to rotate; a heating assembly is arranged in the detection box, the heating assembly is located on one side of the box body, a detector is arranged on the other side of the box body, and the clamping piece is located between the heating assembly and the detector; the detector comprises a convex column, an ultrasonic probe and a temperature sensor are embedded in the convex column, and the detection box is provided with a controller. By adopting the technical scheme of the invention, the integration rate of test items and the component function reuse rate in performance detection are improved.

Description

Technical Field

[0001] This utility model relates to the field of performance testing, specifically to a performance testing device for PVC polyester plasticized composite materials. Background Technology

[0002] PVC polyester plasticized composite material is a polymer composite material with polyvinyl chloride (PVC) as the matrix and polyester plasticizer as the modifying component. PVC, as a widely used thermoplastic, possesses excellent mechanical properties, chemical resistance, and electrical insulation, but its high hardness and poor processability limit its application in flexible fields. Traditional plasticizers (such as phthalates) can improve the flexibility of PVC, but they pose environmental and health risks. Therefore, polyester plasticizers have emerged. As a polymeric plasticizer, it not only has good compatibility with PVC but also provides a long-lasting plasticizing effect, while possessing advantages such as migration resistance, extraction resistance, and environmental friendliness. Through processes such as blending modification and melt blending, PVC and polyester plasticizers can form high-performance composite materials, widely used in fields such as wires and cables, automotive interiors, building materials, and medical devices. With increasingly stringent environmental regulations and advancements in materials science, research on polyester plasticized composite materials in areas such as novel environmentally friendly plasticizers, nanocomposites, and bio-based materials is continuously deepening, promoting its widespread application in performance optimization and sustainable development.

[0003] PVC polyester plasticized composite materials suffer from insufficient heat aging resistance. Under prolonged high-temperature environments, the material is prone to thermal oxidative degradation, leading to a decline in mechanical properties, surface cracking and discoloration, and severely impacting its service life. Therefore, performance testing of PVC polyester plasticized composite materials is necessary.

[0004] Existing technologies employ aging chambers for aging tests, encompassing UV aging, thermo-oxidative aging, and chemical erosion tests, followed by appearance and physical property testing. However, existing technologies suffer from fragmented testing items and low integration. For instance, heat resistance and thermal insulation tests utilize heat sources, while ultrasonic testing and sound insulation involve sound wave acquisition. These tests are interconnected, and integrating related functions would improve component reusability. Therefore, a performance testing device for PVC polyester plasticized composite materials that integrates multiple testing functions is needed. Utility Model Content

[0005] To address the aforementioned issues, this invention provides a performance testing device for PVC polyester plasticized composite materials, which improves the integration rate of test items and the functional reuse rate of components in performance testing.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows: A performance testing device for PVC polyester plasticized composite materials includes a testing chamber, a clamping component inside the testing chamber for clamping the sample to be tested, and a telescopic drive component and a rotation drive component for the clamping component. The telescopic drive component is used to drive the clamping component to move within the testing chamber, and the rotation drive component is used to drive the clamping component to rotate. A heating assembly is provided inside the testing chamber, located on one side of the chamber, and a detector is provided on the other side of the chamber. The clamping component is located between the heating assembly and the detector.

[0007] The detector includes a protruding post, on which an ultrasonic probe is embedded. The detection box is equipped with a controller, and the signal output terminals of the ultrasonic probes are all connected to the signal input terminals of the controller.

[0008] The above approach has the following beneficial effects:

[0009] 1. In this solution, the PVC polyester plasticized composite material sample to be tested is placed on the clamp and fixed, and then the material strength, fatigue resistance, heat aging resistance and heat insulation performance can be tested in the test chamber.

[0010] The material strength test involves moving the sample under test by a telescopic drive component, so that the middle of the sample abuts against the protrusion, and then detecting the material strength by using an ultrasonic probe to examine the damage.

[0011] Fatigue resistance is achieved by repeatedly pressing the sample against the protrusion with a telescopic drive component to induce a fatigue effect, followed by damage detection using an ultrasonic probe.

[0012] After the chamber door is closed, the heating element raises the temperature inside the test chamber to perform heat aging treatment on the PVC polyester plasticized composite material sample. After treatment, ultrasonic testing can be used for damage detection, or combined with material strength and fatigue testing to detect the correlation between structural damage, fatigue damage, and thermal damage. Because the heating element is located on one side of the chamber, uneven heating of the sample may occur. The rotating drive rotates the sample to ensure uniform heating.

[0013] Furthermore, each side wall of the testing chamber is equipped with a door, and a temperature sensor is embedded in the protrusion. The signal output terminal of the temperature sensor is connected to the signal input terminal of the controller.

[0014] Beneficial effect: The temperature sensor can detect the temperature inside the chamber, thereby obtaining heating information.

[0015] During the thermal insulation test, the chamber door is opened, and the heating element releases heat. The temperature sensor detects the temperature rise of the sample under test or the extent of heat penetration to determine the material's thermal insulation performance. Since the chamber door is open at this time, no heat backflow occurs inside the test chamber, thus allowing for effective assessment of the thermal insulation performance.

[0016] Furthermore, the clamping component includes two clamping bodies, which are used to clamp both sides of the sample to be tested. The telescopic drive component is an electric actuator, and the rotation drive component is a motor. There are two telescopic and two rotation drive components. The motors are fixed to the output shafts of the electric actuators, and the clamping bodies are fixed to the output shafts of the motors.

[0017] Beneficial effects: The two clamps can hold the sample to be tested from both sides, which can better stabilize the position of the sample. At the same time, the rotating drive components on both sides rotate in opposite directions, driving the sample to undergo torsional deformation, thereby detecting the effect of the sample under torque.

[0018] The electric actuator can move within the testing chamber by extending and retracting the motor, and the motor's output shaft can drive the clamp to rotate, thereby meeting the requirements for material strength, fatigue resistance, heat aging resistance, and thermal insulation testing.

[0019] Furthermore, the telescopic drive component is fixed to the side of the testing box away from the heat source, the protrusion is located between the fixed part of the telescopic drive component and the heating component, and the stroke of the telescopic drive component includes the range between the protrusion and the fixed part of the telescopic drive component.

[0020] Beneficial effects: After the sample to be tested comes into contact with the protrusion, the telescopic drive can continue to retract, so that when the sample to be tested bends, this process can determine the deformation resistance of the sample to be tested in material strength and fatigue resistance testing.

[0021] Furthermore, a pressure sensor is embedded in the protrusion, and the signal output terminal of the pressure sensor is connected to the signal input terminal of the controller.

[0022] Beneficial effects: The pressure sensor can detect the contact pressure between the sample and the protrusion, thereby measuring the stress state of the sample.

[0023] Furthermore, a laser rangefinder is embedded in the protruding post, and the signal output terminal of the laser rangefinder is connected to the signal input terminal of the controller.

[0024] Beneficial effects: When the sample to be tested is deformed, the telescopic drive component has difficulty in accurately positioning the amount of movement when the sample to be tested abuts against the protrusion. The laser rangefinder can detect the distance deviation caused by the deformation of the sample to be tested through the laser beam, so that it can still adapt to the new shape of the sample to be tested after the sample to be tested is deformed.

[0025] Furthermore, an electric lead screw is provided at the bottom of the housing, and the protrusion is fixedly connected to the lead screw nut of the electric lead screw. The stroke of the electric lead screw is perpendicular to the stroke of the telescopic drive component.

[0026] Beneficial effects: A fixed protrusion means that each sensor on the protrusion can only detect one point on the sample. An electric lead screw can drive the protrusion to move laterally, thereby changing the contact position and detection position. This not only allows the ultrasonic probe to detect a wider range but also enables the laser rangefinder to move and obtain bending information of the sample after deformation.

[0027] Furthermore, a sound-insulating groove is provided on the protruding column, and the inner wall of the sound-insulating groove is covered with a sound-insulating layer. The ultrasonic probe is located inside the sound-insulating groove.

[0028] Beneficial effects: The sound insulation groove can reduce the interference of external noise. When the protrusion abuts against the sample to be tested, the sound insulation groove can form a closed chamber with the sample to be tested. The chamber is noise-reducing except in the direction of the sample to be tested. It can reduce the noise in ultrasonic detection through unidirectional sound reception capability.

[0029] Furthermore, a sound source is provided on the side of the testing box near the heat source, and the ultrasonic probe includes a sound wave transmitter and a sound wave receiver. The sound wave receiving range of the sound wave receiver includes the sound wave band emitted by the sound source.

[0030] Beneficial effect: The sound wave receiver can receive the sound waves emitted by the sound source. When the sound insulation groove and the sample to be tested form a closed chamber, the sound source emits sound waves, and the attenuation of the sound waves emitted by the sound source is detected by the sound wave receiver in the chamber.

[0031] Furthermore, an observation window is provided on the door of the box.

[0032] Beneficial effects: Users can observe the testing status of the sample through the observation window, making it easier for them to promptly identify and handle special situations.

[0033] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0034] Figure 1 This is an isometric schematic diagram of an embodiment of the PVC polyester plasticized composite material performance testing equipment of this utility model;

[0035] Figure 2 This is a schematic diagram of the internal structure of the testing chamber in an embodiment of the PVC polyester plasticized composite material performance testing equipment of this utility model;

[0036] Figure 3 This is a schematic diagram of the bump structure in an embodiment of the PVC polyester plasticized composite material performance testing equipment of this utility model;

[0037] Figure 4This is a side view of an embodiment of the PVC polyester plasticized composite material performance testing equipment of this utility model.

[0038] The reference numerals in the accompanying drawings of the instruction manual include: 1. Testing box; 2. Box door; 3. Clamping component; 4. Telescopic drive component; 5. Rotation drive component; 6. Heating assembly; 7. Protruding column; 8. Ultrasonic probe; 9. Temperature sensor; 10. Pressure sensor; 11. Laser rangefinder; 12. Electric lead screw; 13. Sound insulation groove; 14. Sound insulation layer; 15. Sound source; 16. Sample to be tested. Detailed Implementation

[0039] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0040] 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, and 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 relative importance.

[0041] 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.

[0042] The following detailed description illustrates the specific implementation method:

[0043] Example 1:

[0044] As attached Figures 1-4As shown: A performance testing device for PVC polyester plasticized composite materials includes a testing chamber 1. Each side wall of the testing chamber 1 has a door 2, which is an electrically controlled door with a model number of OoaKGgxK. The testing chamber 1 is equipped with a clamping component 3, which is used to clamp the sample 16 to be tested. The clamping component 3 includes two clamping bodies located on both sides of the width direction of the testing chamber 1. The clamping bodies are metal clamps and are used to clamp both sides of the sample 16 to be tested. Each clamping body is connected to a telescopic drive component 4 and a rotation drive component 5. The telescopic drive component 4 is used to drive the clamping component 3 to move within the testing chamber 1, and the rotation drive component 5 is used to drive the clamping component 3 to rotate.

[0045] The telescopic drive component 4 is an electric actuator, model MS4000. The rotation drive component 5 is a motor, model 36GM-3530. The motor is bolted to the output shaft of the electric actuator, and the clamp is bolted to the output shaft of the motor.

[0046] The heating component 6 is bolted inside the testing box 1. The heating component 6 is an electric heater, model PTCYIDU B-170*62. The heating component 6 is located on one side of the box, and the detector is located on the other side of the box. The clamping part 3 is located between the heating component 6 and the detector.

[0047] The detector includes a protrusion 7, on which an ultrasonic probe 8, a temperature sensor 9, a pressure sensor 10, and a laser rangefinder 11 are embedded. A controller is fixed to the detection box 1 with screws. The controller is located on the outside of the detection box 1. The signal output terminals of the ultrasonic probe 8 and the temperature sensor 9 are connected to the signal input terminal of the controller. The ultrasonic probe 8 is model MHZK1, the temperature sensor 9 is model DS18B20, the pressure sensor 10 is model HX711, the laser rangefinder 11 is model NLM30, and the controller is model STM32F103.

[0048] An electric lead screw 12 is installed at the bottom of the housing. The model of the electric lead screw 12 is CBJ1204. The protrusion 7 is fixed to the lead screw nut screw of the electric lead screw 12. The stroke of the electric lead screw 12 is perpendicular to the stroke of the telescopic drive component 4.

[0049] The telescopic drive component 4 is fixed to the side of the detection box 1 away from the heat source. The protrusion 7 is located between the fixed part of the telescopic drive component 4 and the heating component 6. The stroke of the telescopic drive component 4 includes the range between the protrusion 7 and the fixed part of the telescopic drive component 4.

[0050] The PVC polyester plasticized composite material sample 16 to be tested is placed on the clamping member 3 and clamped and fixed. Then, tests such as material strength, fatigue resistance, heat aging resistance, heat insulation, and deformation resistance can be carried out in the test chamber 1.

[0051] The material strength test involves the telescopic drive 4 pulling the sample 16 to be tested to move so that the middle of the sample 16 abuts against the protrusion 7, and then the material strength is detected by the ultrasonic probe 8.

[0052] The deformation resistance test is performed by the telescopic drive 4 pulling the sample 16 to be tested to move, so that the middle part of the sample 16 to be tested abuts against the protruding post 7. Then the telescopic drive 4 continues to retract, so that the sample 16 to be tested forms an arc-shaped structure with the middle protruding and the sides bent.

[0053] Fatigue resistance is achieved by repeatedly pressing the sample 16 against the protrusion 7 using the telescopic drive 4, creating a fatigue effect, which is then detected by ultrasonic probe 8. Alternatively, when the sample 16 is pressed against the protrusion 7, it can be repeatedly pulled to form an arc-shaped structure, generating a fatigue effect by changing the state at different amplitudes.

[0054] In another embodiment of this application, after the chamber door 2 is closed, the temperature inside the test chamber 1 is raised by the heating component 6 to perform heat aging treatment on the PVC polyester plasticized composite material sample 16. After the treatment, the ultrasonic probe 8 can be used for damage detection, or it can be combined with material strength testing and fatigue resistance testing to detect the correlation between structural damage, fatigue damage, and thermal damage. Since the heating component 6 is located on one side of the chamber, the sample 16 may be heated unevenly. The rotation drive 5 can rotate the sample 16 to ensure that the sample 16 is heated evenly. The temperature sensor 9 can detect the temperature inside the test chamber 1 to obtain heating information.

[0055] During the thermal insulation test, the chamber door 2 is opened, and the heating component 6 releases heat. The temperature sensor 9 detects the temperature rise of the sample 16 under test or the heat penetration to obtain the thermal insulation performance of the material. At this time, both chamber doors 2 are open, and no heat backflow occurs inside the test chamber 1, thus enabling effective judgment of thermal insulation performance.

[0056] The pressure sensor 10 can detect the contact pressure between the sample 16 to be tested and the protrusion 7, thereby measuring the force state of the sample 16 to be tested, so as to record mechanical properties.

[0057] When the sample 16 to be tested is deformed, the telescopic drive 4 has difficulty accurately positioning the amount of movement when the sample 16 to be tested abuts against the protrusion 7. The laser rangefinder 11 can detect the distance deviation caused by the deformation of the sample 16 to be tested through the laser beam, so that it can still adapt to the new shape of the sample 16 to be tested after the sample 16 to be tested is deformed.

[0058] In another embodiment of this application, fixing the protrusion 7 will cause each sensor on the protrusion 7 to be able to detect only one point of the sample 16 to be tested. When the electric lead screw 12 is manually controlled, the electric lead screw 12 can drive the protrusion 7 to move laterally, thereby changing the contact position and the detection position. This not only allows the ultrasonic probe 8 to detect a larger range, but also allows the laser rangefinder 11 to be moved to obtain the bending information of the sample after deformation.

[0059] The rotating drive 5 can flip the sample 16 to be tested so that the ultrasonic probe 8 can perform flaw detection on both sides of the sample 16. Furthermore, after the sample 16 is bent, the rotating drive 5 flips the sample 16 to detect the concave and bent surfaces of the sample 16.

[0060] Example 2:

[0061] The difference from the above embodiment is that: a sound-insulating groove 13 is provided on the protruding post 7, and the inner wall of the sound-insulating groove 13 is covered with a sound-insulating layer 14. The sound-insulating layer 14 is bonded and fixed to the inner wall of the sound-insulating groove 13, and the ultrasonic probe 8 is located inside the sound-insulating groove 13. A sound source 15 is bolted to the side of the detection box 1 near the heat source. The sound source 15 is a buzzer, model LTE-5051J. The ultrasonic probe 8 includes a sound wave transmitter and a sound wave receiver. The sound wave receiving range of the sound wave receiver includes the sound wave band emitted by the sound source 15.

[0062] The sound-insulating groove 13 reduces interference from external noise. When the protrusion 7 abuts against the sample 16 to be tested, the sound-insulating groove 13 and the sample 16 to be tested form a closed chamber. This chamber, except for the direction of the sample 16 to be tested, has undergone noise reduction treatment. It can reduce noise in ultrasonic detection through unidirectional sound reception capability. The sound wave receiver can receive the sound waves emitted by the sound source 15. After the sound-insulating groove 13 and the sample 16 to be tested form a closed chamber, the sound source 15 emits sound waves. The attenuation of the sound waves emitted by the sound source 15 is detected by the sound wave receiver in the chamber.

[0063] Example 3:

[0064] The difference from the above embodiment is that an observation window is provided on the door 2.

[0065] Users can observe the testing status of the sample 16 through the observation window, which makes it easier for users to discover and handle special situations in a timely manner.

[0066] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A performance testing device for PVC polyester plasticized composite materials, characterized in that, The test box (1) includes a clamping component (3) inside the test box (1). The clamping component (3) is used to clamp the sample (16) to be tested. The clamping component (3) is provided with a telescopic drive component (4) and a rotation drive component (5). The telescopic drive component (4) is used to drive the clamping component (3) to move inside the test box (1), and the rotation drive component (5) is used to drive the clamping component (3) to rotate. The test box (1) is provided with a heating component (6). The heating component (6) is located on one side of the box body, and a detector is located on the other side of the box body. The clamping component (3) is located between the heating component (6) and the detector. The detector includes a protrusion (7), on which an ultrasonic probe (8) is embedded. The detection box (1) is equipped with a controller, and the signal output terminal of the ultrasonic probe (8) is connected to the signal input terminal of the controller.

2. The PVC polyester plasticized composite material performance testing equipment according to claim 1, characterized in that, The side walls of the testing box (1) are all provided with doors (2), and temperature sensors (9) are embedded on the protrusions (7). The signal output terminal of the temperature sensor (9) is connected to the signal input terminal of the controller.

3. The PVC polyester plasticized composite material performance testing equipment according to claim 2, characterized in that, The clamping component (3) includes two clamping bodies, which are used to clamp the two sides of the sample (16) to be tested. The telescopic drive component (4) is an electric push rod, and the rotation drive component (5) is a motor. The number of telescopic drive components (4) and rotation drive components (5) is 2. The motors are fixed on the output shaft of the electric push rods, and the clamping bodies are fixed on the output shaft of the motors.

4. The PVC polyester plasticized composite material performance testing equipment according to claim 3, characterized in that, The telescopic drive (4) is fixed to the side of the test box (1) away from the heat source. The protrusion (7) is located between the fixed part of the telescopic drive (4) and the heating component (6). The stroke of the telescopic drive (4) includes the range between the protrusion (7) and the fixed part of the telescopic drive (4).

5. The PVC polyester plasticized composite material performance testing equipment according to claim 4, characterized in that, A pressure sensor (10) is embedded on the protrusion (7), and the signal output terminal of the pressure sensor (10) is connected to the signal input terminal of the controller.

6. The PVC polyester plasticized composite material performance testing equipment according to claim 5, characterized in that, A laser rangefinder (11) is embedded on the protruding post (7), and the signal output terminal of the laser rangefinder (11) is connected to the signal input terminal of the controller.

7. The PVC polyester plasticized composite material performance testing equipment according to claim 6, characterized in that, The bottom of the housing is equipped with an electric lead screw (12), and the protrusion (7) is fixedly connected to the lead screw nut of the electric lead screw (12). The stroke of the electric lead screw (12) is perpendicular to the stroke of the telescopic drive component (4).

8. The PVC polyester plasticized composite material performance testing equipment according to claim 7, characterized in that, A sound insulation groove (13) is provided on the protruding column (7), and the inner wall of the sound insulation groove (13) is covered with a sound insulation layer (14). The ultrasonic probe (8) is located inside the sound insulation groove (13).

9. The PVC polyester plasticized composite material performance testing equipment according to claim 8, characterized in that, The test box (1) has a sound source (15) on the side near the heat source. The ultrasonic probe (8) includes a sound wave transmitter and a sound wave receiver. The sound wave receiving range of the sound wave receiver includes the sound wave band emitted by the sound source (15).

10. The PVC polyester plasticized composite material performance testing equipment according to claim 9, characterized in that, An observation window is provided on the door (2).

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