Fabric half-life period antistatic performance testing device

Abstract

The utility model provides a fabric half-life period antistatic performance testing device, which relates to the technical field of fabric performance testing devices and comprises a constant-temperature and constant-humidity testing cavity, a static applying device, a dynamic monitoring system, a sample clamping system and a control system. The constant temperature and humidity test cavity is provided with a temperature and humidity sensor, a circulating air system and an electromagnetic shielding layer; the electrostatic applying device comprises a high-voltage electrostatic generator and a discharge electrode; the dynamic monitoring system comprises a non-contact electrostatic voltage detector array and a data acquisition module, and the probe array is formed by uniformly distributing 9-16 electrostatic voltage detectors; the sample clamping system comprises a conductive clamp and a tension sensor; the control system comprises an environmental parameter compensation module, a half-life period calculation module and a data analysis module. The static dissipation performance of the fabric can be accurately reflected by monitoring the static pressure intensity change of the surface of the fabric in real time through the probe array and combining with a stable test environment and environmental parameter compensation.

Description

Technical Field

[0001] This utility model relates to the technical field of fabric performance testing devices, specifically to a fabric half-life antistatic performance testing device. Background Technology

[0002] The antistatic properties of fabrics are one of their important performance indicators. In practical applications, the generation and accumulation of static electricity not only affects wearing comfort but can also pose safety hazards in certain situations. Therefore, accurate testing of the antistatic properties of fabrics is of great significance.

[0003] In existing technologies, the antistatic performance testing of fabrics mainly involves directly measuring the amount of charge after applying static electricity to the fabric. While this method can obtain data on the amount of charge on the fabric surface, it has significant shortcomings: First, simple charge measurement cannot reflect the dynamic characteristics of static dissipation during actual use, making it difficult to accurately reflect the true antistatic performance of the fabric in actual production, processing, and garment use; second, the testing process is easily affected by environmental factors, resulting in poor stability and repeatability of the test results; and third, existing testing methods lack precise means to measure the static half-life of the fabric, making it difficult to quantitatively evaluate the static dissipation performance of the fabric.

[0004] Existing patent document CN221993238U discloses a fabric antistatic testing device, whose technical solution mainly focuses on solving the tension control problem during fabric testing. However, this device still uses traditional charge measurement methods, failing to solve the dynamic measurement problem of fabric static dissipation performance, and also failing to effectively overcome the influence of environmental factors on the test results. Utility Model Content

[0005] The purpose of this invention is to provide a fabric half-life antistatic performance testing device that can accurately reflect the dynamic characteristics of static dissipation during actual use of the fabric, has good testing stability, and can solve the above-mentioned technical problems.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A fabric half-life antistatic performance testing device, characterized in that it comprises:

[0008] A constant temperature and humidity testing chamber, which is equipped with a temperature and humidity sensor, a circulating air system and an electromagnetic shielding layer;

[0009] An electrostatic application device, comprising a high-voltage electrostatic generator and a discharge electrode;

[0010] A dynamic monitoring system, comprising a non-contact electrostatic voltage detector array and a data acquisition module;

[0011] A sample clamping system, the sample clamping system comprising a conductive clamp and a tension sensor;

[0012] The control system is electrically connected to the temperature and humidity sensor, the electrostatic application device, the dynamic monitoring system, and the sample clamping system, and is used to control the operation of the testing device and calculate the electrostatic half-life of the fabric.

[0013] Furthermore, the circulating air system includes an air inlet, an air outlet, and a circulating fan. The air inlet and air outlet are respectively located on opposite side walls of the constant temperature and humidity test chamber. The circulating air system can ensure the uniformity of temperature and humidity in the test environment.

[0014] Furthermore, the electromagnetic shielding layer covers the inner wall of the constant temperature and humidity test chamber, effectively isolating the test results from external electromagnetic interference.

[0015] Furthermore, the discharge electrode is electrically connected to the high-voltage electrostatic generator via a programmable control unit.

[0016] Furthermore, the discharge electrode is electrically connected to the high-voltage electrostatic generator via a programmable control unit, thereby enabling precise control of the electrostatic application process.

[0017] Furthermore, the non-contact electrostatic voltage detector array includes multiple electrostatic voltage detectors uniformly distributed along the fabric surface, and the number of electrostatic voltage detectors is preferably 9-16, which can realize accurate monitoring of the electrostatic distribution state of the fabric surface.

[0018] Furthermore, the sample clamping system also includes a multi-degree-of-freedom adjustment mechanism, which is connected to the conductive clamp to facilitate adjustment of the spatial position of the fabric sample.

[0019] Further: The control system includes:

[0020] An environmental parameter compensation module is used to compensate the test data based on the environmental parameters collected by the temperature and humidity sensor.

[0021] The half-life calculation module is used to calculate the electrostatic half-life of the fabric based on the electrostatic voltage intensity data collected by the dynamic monitoring system.

[0022] The data analysis module is used to analyze the electrostatic distribution on the fabric surface.

[0023] Compared with the prior art, the present invention has the following advantages:

[0024] 1. Dynamic monitoring is performed using a non-contact electrostatic voltage detector array. The probe array consists of 9-16 evenly distributed measurement probes, which can collect data on the change of electrostatic voltage intensity on the fabric surface in real time. Combined with the half-life calculation module, it can accurately reflect the dynamic characteristics of static electricity dissipation of the fabric during actual use.

[0025] Second, by setting up a constant temperature and humidity test chamber, and equipping it with a circulating air system with opposing air inlets and outlets and an electromagnetic shielding layer covering the inner wall, a stable and controllable test environment is formed, which can effectively isolate external electromagnetic interference. Combined with the environmental parameter compensation module in the control system, the impact of environmental factors on the test results can be significantly reduced, ensuring the stability and repeatability of the test data. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of a fabric half-life antistatic performance testing device according to a utility model.

[0027] Figure 2 for Figure 1 A schematic cross-sectional view along the AA direction;

[0028] Figure 3 This is a schematic diagram of the structure of a non-contact electrostatic voltage detector array;

[0029] In the picture:

[0030] 1. Cavity; 2. Electromagnetic shielding layer; 3. Air inlet; 4. Air outlet; 5. Circulating fan; 6. Fabric sample; 7. Discharge electrode; 8. High voltage electrostatic generator; 9. Programmable control unit; 10. Conductive clamp; 11. Static voltage detector array; 12. Degree of freedom adjustment mechanism; 13. Static voltage detector; 14. Temperature and humidity sensor; 14.1. Temperature and humidity control probe. Detailed Implementation

[0031] 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.

[0032] 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.

[0033] like Figure 1-3 As shown, the fabric half-life antistatic performance testing device provided by this utility model includes a constant temperature and humidity testing chamber 1, an electrostatic application device, a dynamic monitoring system, a sample clamping system, and a control system. The constant temperature and humidity testing chamber 1 provides a stable testing environment, the electrostatic application device applies electrostatics to the fabric sample 6, the dynamic monitoring system monitors the changes in electrostatic voltage intensity on the fabric surface in real time, the sample clamping system fixes the fabric sample 6, and the control system controls the entire testing process and processes the data.

[0034] The constant temperature and humidity testing chamber 1 is equipped with a temperature and humidity sensor 14, a circulating air system, and an electromagnetic shielding layer 2. The circulating air system includes an air inlet 3, an air outlet 4, and a circulating fan 5. The air inlet 3 and air outlet 4 are respectively located on opposite side walls of the constant temperature and humidity testing chamber 1. The operation of the circulating fan 5 creates a stable airflow circulation within the chamber 1, ensuring the uniformity of temperature and humidity in the testing environment. The electromagnetic shielding layer 2, made of conductive material, covers the inner wall of the constant temperature and humidity testing chamber 1 and effectively isolates external electromagnetic interference from affecting the test results.

[0035] The electrostatic application device includes a high-voltage electrostatic generator 8 and a discharge electrode 7, wherein the discharge electrode 7 is electrically connected to the high-voltage electrostatic generator 8 via a programmable control unit 9. The programmable control unit 9 can set the electrostatic application voltage and time according to testing requirements, achieving precise control of the electrostatic application process. In this embodiment, the output voltage range of the high-voltage electrostatic generator 8 is 5kV-20kV, which can be adjusted according to the testing requirements of different fabrics.

[0036] The dynamic monitoring system includes a non-contact static voltage detector array 11 and a data acquisition module. For example... Figure 3As shown, the non-contact electrostatic voltage detector array 11 includes multiple electrostatic voltage detectors 13 uniformly distributed along the fabric surface. In this embodiment, the number of electrostatic voltage detectors 13 is 12, and the detector array is arranged in a matrix, enabling comprehensive monitoring of the electrostatic distribution state on the fabric surface. The dynamic monitoring system also includes a temperature and humidity control probe 14.1, which is positioned close to the electrostatic voltage detector array 13 to monitor temperature changes in the test area in real time, ensuring temperature stability during the test. The data acquisition module uses a high-precision A / D converter with a sampling frequency of not less than 100Hz. During testing, the electrostatic voltage sensing system and the temperature and humidity control probe 14.1 are activated synchronously to ensure accurate capture of changes in the electrostatic voltage intensity on the fabric surface.

[0037] The sample clamping system includes a conductive clamp 10, a tension sensor, and a multi-degree-of-freedom adjustment mechanism 12. The conductive clamp 10, made of conductive material, is used to fix the fabric sample 6 and ensure good conductivity between the sample and ground. The tension sensor is connected to the conductive clamp 10 to monitor the tension state of the fabric sample 6 in real time. The multi-degree-of-freedom adjustment mechanism 12, connected to the conductive clamp 10, includes a horizontal displacement mechanism and an angle adjustment mechanism, facilitating the adjustment of the spatial position of the fabric sample 6 to ensure it is in the optimal testing state.

[0038] The control system includes an environmental parameter compensation module, a half-life calculation module, and a data analysis module. The environmental parameter compensation module corrects the test data based on environmental parameters collected by the temperature and humidity sensor 14 using a preset compensation algorithm, eliminating the influence of environmental factors. The half-life calculation module calculates the time required for the fabric's charge to decay to half its initial value, i.e., the electrostatic half-life, based on the electrostatic voltage intensity data collected by the dynamic monitoring system. The data analysis module processes and analyzes the collected data, generating an electrostatic distribution cloud map on the fabric surface, visually displaying the electrostatic dissipation process.

[0039] In this embodiment, the specific usage process of the testing device is as follows: First, the fabric sample 6 is fixed on the conductive clamp 10, and the sample tension is adjusted to the standard state by the tension sensor; the constant temperature and humidity system is started to make the test environment reach the standard conditions (the temperature is controlled at 20℃±1.5℃ and the relative humidity is 40±3%); a voltage of 5kV-20kV is applied to the sample by the electrostatic application device to ensure uniform distribution of static electricity.

[0040] Specific process parameters:

[0041] 1. The total area of ​​the insulating board below the fabric should be 120-150% of the fabric to be tested, and the fabric control area should not be less than 60% of the fabric to be tested;

[0042] 2. The high-voltage output time is controlled within 30.00 seconds ± 5 milliseconds, with an attenuation rate of 50.00%;

[0043] 3. The distance between the sensor and the discharge moving end and the tension device should be within 15-20mm to ensure stable electrostatic half-life test results.

[0044] The dynamic monitoring system is activated to monitor the peak and endpoint voltages on the sample surface in real time using a probe array. Finally, the control system automatically calculates the electrostatic half-life of the fabric based on these two measurements.

[0045] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent transformations or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A fabric half-life antistatic performance testing device characterized by, The application relates to a static electricity test device for testing the static electricity half-life period of a fabric. The static electricity test device comprises a constant-temperature and constant-humidity test cavity, a static electricity applying device, a dynamic monitoring system and a sample clamping system. The constant-temperature and constant-humidity test cavity is provided with a temperature and humidity sensor, a circulating air system and an electromagnetic shielding layer. The static electricity applying device comprises a high-voltage static electricity generator and a discharge electrode. The dynamic monitoring system comprises a non-contact static voltage detector array and a data acquisition module. The sample clamping system comprises a conductive clamp and a tension sensor.

2. A fabric half-life antistatic performance testing device according to claim 1, wherein, A control system is electrically connected with the temperature and humidity sensor, the static electricity applying device, the dynamic monitoring system and the sample clamping system, and is used for controlling the operation of the test device and calculating the static electricity half-life period of the fabric.

3. The fabric half-life antistatic performance testing device according to claim 1, wherein, The circulating air system comprises an air inlet and an air outlet, and a circulating fan.

4. The fabric half-life antistatic property testing device according to claim 1, wherein, The air inlet and the air outlet are arranged on opposite two side walls of the constant-temperature and constant-humidity test cavity.

5. The fabric half-life antistatic performance testing device according to claim 1, wherein, The electromagnetic shielding layer is wrapped on the inner wall of the constant-temperature and constant-humidity test cavity.

6. The fabric half-life antistatic performance testing device according to claim 1, wherein, The discharge electrode is electrically connected with the high-voltage static electricity generator through a programmable control unit.

7. The fabric half-life antistatic performance testing device according to claim 1, wherein, The non-contact static voltage detector array comprises a plurality of static voltage detectors which are uniformly distributed on the surface of the fabric.

8. The fabric half-life antistatic performance testing device according to claim 1, wherein, The number of the static voltage detectors is 9-16. The sample clamping system further comprises a multi-degree-of-freedom adjusting mechanism which is connected with the conductive clamp. The control system comprises: An environmental parameter compensation module which is used for compensating the test data according to the environmental parameters collected by the temperature and humidity sensor; A half-life period calculation module which is used for calculating the static electricity half-life period of the fabric according to the static voltage intensity data collected by the dynamic monitoring system; A data analysis module which is used for analyzing the static electricity distribution state of the fabric surface and generating a static electricity distribution cloud picture of the fabric surface, so that the static electricity dissipation process can be directly displayed.

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