A device and method for detecting the wet feel of a fabric

Abstract

The application discloses a fabric wet stickiness detection device and method, and belongs to the technical field of textile comfort detection. The detection device comprises a slope base, a magnetic attraction clamping panel, a displacement timing module, a standard slider and a control system. The test adopts a gravity-driven slope sliding mode, the sliding distance, the starting time and the average speed are measured, and the adhesion index is constructed to quantify the wet skin adhesion degree. The technical test is closer to the real wearing posture, and is suitable for the standardized detection and comfort grading of sports fabrics, close-fitting clothes, medical dressings and the like.

Description

Technical Field

[0001] This invention belongs to the field of fabric performance testing technology, specifically relating to a device and method for testing the wetness and stickiness of fabrics. It is particularly suitable for the comprehensive testing of the wet adhesion and quick-drying properties of close-fitting fabrics such as cotton and chemical fiber fabrics, and can realize instrumental automatic testing and data output. Background Technology

[0002] The wet stickiness of a fabric is one of the core indicators for evaluating the comfort of close-fitting fabrics. It is directly related to the moisture content and surface adhesion of the fabric after it absorbs moisture—the higher the moisture content after the fabric absorbs moisture, the stronger the surface adhesion, the more obvious the wet stickiness discomfort, and the worse the quick-drying performance. Currently, most methods for testing the wet stickiness of fabrics rely on subjective manual evaluation or single-parameter measurement, which suffers from drawbacks such as low testing accuracy, strong subjectivity, inability to achieve simultaneous multi-parameter testing, and low instrumentation level.

[0003] In the existing technology, some detection methods evaluate quick-drying performance by measuring the moisture content of the fabric, which cannot reflect the discomfort of being wet and sticky; some methods measure adhesion force by sliding friction, but the operation is cumbersome and inefficient, and cannot achieve a synchronous correlation between moisture content and adhesion force; at the same time, existing detection devices are complex in structure and expensive, making it difficult to achieve miniaturized and instrumented batch testing, and cannot meet the needs of standardized laboratory testing and industrial production testing.

[0004] Therefore, developing a simple, highly instrumented testing device and method that can simultaneously detect fabric moisture content and adhesion, and quantify wet adhesion performance through a single comprehensive index, has become an urgent technical problem to be solved in the field of fabric performance testing. Summary of the Invention

[0005] This invention provides a device and method for detecting the sticky feel of fabrics. The present invention adopts the following technical solution: A device for detecting the stickiness and dampness of fabrics includes an inclined base, a magnetic clamping panel, a displacement timing module, a standard slider, and a control system. An angle adjustment platform is provided on the inclined base, and a sample placement plate is provided on the angle adjustment platform. The sample placement plate is used to detachably fix the fabric to be tested. The angle adjustment platform is used to adjust the tilt angle of the sample placement plate. A displacement timing module is provided on one side of the upper start point and the lower end point of the sample placement plate. A weighing module is provided on the sample placement plate. The weighing module is used to detect the real-time mass of the fabric to be tested on the sample placement plate. The standard slider has a simulated skin silicone layer on its bottom surface. During testing, the standard slider slides from the upper end to the lower end of the fabric surface, and the simulated skin layer moves along the fabric during the sliding process. The control system includes a quality acquisition module, a timing module, a data processing module, and a display module; The mass acquisition module is used to acquire the initial mass m0 of the fabric to be tested and the mass m of the fabric after evaporation for a certain time t via the weighing module. t ; The timing module is used to acquire the time required for the standard slider to slide from the starting point to the lower endpoint via the displacement timing module, and to obtain the time t0 required for the standard slider to slide from the starting point to the lower endpoint on the test fabric with an initial mass of m0, and the mass of the standard slider after evaporation for a certain time t. t The time t required for the fabric to slide from the starting point to the ending point at the bottom. t ; The data processing module and display module are used to process data according to the formula SMADI=m0×t0 / m t ×t t The system automatically calculates, displays, and stores the comprehensive index SMADI.

[0006] Furthermore, the angle adjustment range of the angle adjustment platform is 0-90°.

[0007] Furthermore, during testing, the fabric to be tested can be detachably fixed to the sample placement plate via a magnetic clamping panel.

[0008] A method for testing the wet adhesion properties of fabrics, comprising the following steps: Step 1: The fabric to be tested is detachably fixed to the sample placement plate using the magnetic clamping panel. Deionized water is sprayed onto the fabric to be tested to allow the water to penetrate evenly. The moisture content of the fabric to be tested is controlled to the preset moisture content. The standard slider is placed at the starting point of the sample placement plate to simulate the skin layer contacting the fabric to be tested. The displacement timing module is aligned with the starting point at the top. The mass acquisition module collects the initial mass m0 of the fabric to be tested through the weighing module. Step 2: Adjust the angle of the inclined plane and release the standard slider. The slider slides down naturally under gravity. During the sliding process, the simulated skin layer moves down along the fabric to be tested and passes the end point of the sample placement plate. The displacement timing module collects the time t0 required for the standard slider to slide from the starting point to the end point of the fabric to be tested through the displacement timing module. Step 3: After the moisture in the fabric evaporates over a period of time t, place the standard slider at the starting point of the sample placement plate to simulate skin contact with the fabric. Align the displacement timing module at the upper starting point with the mass acquisition module, which then collects the real-time mass m of the fabric at this point via the weighing module. t ; Step 4: Release the standard slider. The slider slides down naturally under gravity. During the sliding process, the displacement timing module simulates the skin layer moving downwards along the fabric under test and passing the endpoint at the bottom of the sample placement plate. The timing module collects the time t required for the standard slider to slide from the starting point to the endpoint at the bottom of the fabric under test. t The data processing module and display module are used to process data according to the formula SMADI=m0×t0 / m t ×t t The system automatically calculates, displays, and stores the comprehensive index SMADI. Step 5: Repeat steps 1-4 multiple times to remove outliers, and take the average value of the SMADI index to obtain the final SMADI value. Use the final SMADI value to evaluate the wet adhesion performance of the fabric.

[0009] Furthermore, in step 3, the preset moisture content of the fabric is 10%-150%.

[0010] Furthermore, in step 5, a test is performed every 2 to 10 minutes.

[0011] Furthermore, the standard slider remains stationary each time it is released, and the release position is consistent.

[0012] The beneficial effects of this invention are as follows: The adjustable tilt angle of the inclined base in this invention has an adjustable tilt angle range of 0° to 90°, which can simulate various wearing postures such as standing, sitting, and tilting during movement. The mass acquisition module can continuously collect the mass loss of the fabric during the wet evaporation process, and the timing module can detect the sliding time of the standard slider, realizing the synchronous detection of fabric mass (reflecting evaporation) and standard slider sliding time (reflecting adhesion). It also constructs a comprehensive evaluation index SMADI, realizing the direct output of data on the wet adhesion performance of the fabric, which has the advantages of being fast and accurate. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the detection device of the present invention.

[0014] The meanings of the components represented by each number in the attached diagram are listed below: 1. Inclined base; 2. Sample placement position; 3. Fabric to be tested; 4. Standard slider; 5. Angle adjustment platform; 6. Weighing module Detailed Implementation

[0015] The principles and features of the present invention are described below. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0016] The testing method of this invention is as follows: Step 1: Cut the sample size to 10 cm × 30 cm for pure cotton woven fabric and polyester woven fabric. The fabric to be tested is detachably fixed to the sample placement plate by magnetic clamping panel. The sample is conditioned on the tray. The initial moisture content is set to 100%. The equipment automatically injects water to reach the target moisture content. The tilt angle is adjusted so that the standard slider can slide down at a uniform speed due to gravity. The weighing module 6 weighs the sample to obtain the initial mass m0. Step 2: Place the standard slider 4 on top of the fabric, with the simulated skin plane in contact with the fabric surface; release the standard slider, and during the sliding process, the simulated skin layer moves down along the fabric to be tested and passes the displacement timing module at the lower end of the sample placement plate. The timing module collects the time t0 required for the standard slider to slide from the starting point to the lower end of the fabric to be tested through the displacement timing module. Step 3: Substitute the collected baseline data and real-time data into the SMADI calculation formula to calculate the SMADI values ​​corresponding to different times. Perform three parallel experiments and calculate the SMADI composite index values ​​for pure cotton woven fabric samples and polyester woven fabric samples by averaging the results. At 30 minutes, the SMADI value of cotton fabric was 0.34, indicating poor quick-drying properties and severe stickiness when wet. The value of polyester fabric was 0.72, indicating better overall quick-drying properties. The results are consistent with the actual wearing experience of the two types of fabrics.

[0017] The above description provides examples of the preferred embodiments of the present invention. Parts not detailed herein are common knowledge to those skilled in the art. The scope of protection of the present invention is determined by the claims. Any equivalent modifications based on the technical teachings of the present invention are also within the scope of protection of the present invention.

Claims

1. A device for detecting the stickiness / wetness of fabrics, characterized in that, Includes a sloping base, magnetic clamping panel, displacement timing module, standard slider, and control system; An angle adjustment platform is provided on the inclined base, and a sample placement plate is provided on the angle adjustment platform. The sample placement plate is used to detachably fix the fabric to be tested. The angle adjustment platform is used to adjust the tilt angle of the sample placement plate. A displacement timing module is provided on one side of the upper start point and the lower end point of the sample placement plate. A weighing module is provided on the sample placement plate. The weighing module is used to detect the real-time mass of the fabric to be tested on the sample placement plate. The standard slider has a simulated skin silicone layer on its bottom surface. During testing, the standard slider slides from the upper end to the lower end of the fabric surface, and the simulated skin layer moves along the fabric during the sliding process. The control system includes a quality acquisition module, a timing module, a data processing module, and a display module; The mass acquisition module is used to acquire the initial mass m0 of the fabric to be tested and the mass m of the fabric after evaporation for a certain time t via the weighing module. t ; The timing module is used to acquire the time required for the standard slider to slide from the starting point to the lower endpoint via the displacement timing module, and to obtain the time t0 required for the standard slider to slide from the starting point to the lower endpoint on the test fabric with an initial mass of m0, and the mass of the standard slider after evaporation for a certain time t. t The time t required for the fabric to slide from the starting point to the ending point at the bottom. t ; The data processing module and display module are used to process data according to the formula SMADI=m0×t0 / m t ×t t The system automatically calculates, displays, and stores the comprehensive index SMADI.

2. The fabric stickiness and dampness detection device according to claim 1, characterized in that, The angle adjustment range of the angle adjustment table is 0-90°.

3. The fabric stickiness and dampness detection device according to claim 1, characterized in that, The thickness of the simulated skin silicone layer is 1-3mm.

4. The fabric stickiness and dampness detection device according to claim 1, characterized in that, During testing, the fabric to be tested can be detachably fixed to the sample placement plate via a magnetic clamping panel.

5. A method for testing the wet adhesion properties of fabrics, based on the testing device according to any one of claims 1 to 4, characterized in that: Includes the following steps: Step 1: The fabric to be tested is detachably fixed to the sample placement plate using the magnetic clamping panel. Deionized water is sprayed onto the fabric to be tested to allow the water to penetrate evenly. The moisture content of the fabric to be tested is controlled to the preset moisture content. The standard slider is placed at the starting point of the sample placement plate to simulate the skin layer contacting the fabric to be tested. The displacement timing module at the starting point at the upper end is aligned. The mass acquisition module acquires the initial mass m0 of the fabric to be tested through the weighing module; Step 2: Adjust the angle of the inclined plane and release the standard slider. The slider slides down naturally under gravity. During the sliding process, the displacement timing module simulates the skin layer moving down along the fabric to be tested and passing the end point of the sample placement plate. The timing module collects the time t0 required for the standard slider to slide from the starting point to the end point of the lower end on the fabric to be tested through the displacement timing module. Step 3: After the moisture in the fabric evaporates over a period of time t, place the standard slider at the starting point of the sample placement plate to simulate skin contact with the fabric. Align the displacement timing module at the upper starting point with the mass acquisition module, which then collects the real-time mass m of the fabric at this point via the weighing module. t ; Step 4: Release the standard slider. The slider slides down naturally under gravity. During the sliding process, the displacement timing module simulates the skin layer moving downwards along the fabric under test and passing the endpoint at the bottom of the sample placement plate. The timing module collects the time t required for the standard slider to slide from the starting point to the bottom endpoint on the fabric under test. t The data processing module and display module are used to process data according to the formula SMADI=m0×t0 / m t ×t t The system automatically calculates, displays, and stores the comprehensive index SMADI. Step 5: Repeat steps 1-4 multiple times to remove outliers, and take the average value of the SMADI index to obtain the final SMADI value. Use the final SMADI value to evaluate the wet adhesion performance of the fabric.

6. The method for testing the wet adhesion properties of fabrics according to claim 5, characterized in that: In step 3, the preset moisture content of the fabric is 10%-150%.

7. The method for testing the wet adhesion properties of fabrics according to claim 5, characterized in that: In step 5, a test is performed every 2 to 10 minutes.

8. The method for testing the wet adhesion properties of fabrics according to claim 5, characterized in that: Keep the standard slider stationary each time it is released, and release positions should be consistent.

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