A testing method for one-way moisture conducting and quick drying function of a fabric

Abstract

The application discloses a kind of fabric one-way wetting and drying function test method, and the test method includes: by from sample front and back respectively dropping a certain amount of 9g / L NaCl solution, observe whether the solution on sample solution reaches the diffusion condition of corresponding length from the center in a period of time, and the solution on the filter paper of sample is wet, scattered point, completely unwet, determine whether sample has one-way wetting and drying function.The application compared with prior art, the method is fast, easy to operate, and the effect is more intuitive.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of textile detection, and particularly relates to a test method for one-way moisture-conducting and quick-drying function of a fabric. BACKGROUND

[0002] With the improvement of living standards, people have higher and higher requirements for the wearability and functionality of leisure and sports textiles. In the 1980s and the early 21st century, people began to study moisture-conducting and quick-drying fabrics and one-way moisture-conducting fabrics. These two kinds of fabrics are favored by people due to their superior functionality. So far, moisture-conducting and quick-drying fabrics have been popularized on a large scale, and one-way moisture-conducting fabrics have also gradually been accepted and liked by customers. One-way moisture-conducting and quick-drying fabrics not only can quickly discharge sweat outside the body to keep the fabric dry and comfortable, but also can quickly spread and evaporate sweat on the outer layer of the fabric to keep the clothes dry.

[0003] Although there are many studies on the test of the moisture-conducting and quick-drying performance of fabrics, until December 1, 2008, the General Administration of Quality Supervision, Inspection and Quarantine of China first issued the evaluation standard for the moisture-conducting and quick-drying performance of textiles, namely GB / T 21655.1 "Evaluation of Moisture Management Properties of Textiles Part 1: Single Combination Test Method", and began to be formally implemented. The standard mainly tests the water absorption rate, drop water spreading time, water evaporation rate and evaporation time, wicking height and moisture permeation of the fabric before and after washing. The standard has different evaluation standards for the moisture-conducting and quick-drying performance of knitted fabrics and woven fabrics.

[0004] In 2009, the American Association of Textile Chemists and Colorists (AATCC) also formally passed the test standard for the moisture-conducting and quick-drying performance of AATCC TM 195-2009 "Liquid Water Management Properties of Fabrics". The standard measures the moisture-conducting and quick-drying performance of fabrics by measuring the wetting time, water absorption rate, maximum wetting radius, diffusion speed and one-way transmission capacity of the fabric by a liquid water management tester (MMT) to calculate the comprehensive moisture-conducting and quick-drying capacity of the fabric. In the AATCC test standard, the one-way transmission index represents the difference between the average water content inside and outside the fabric, which is an important indicator for determining one-way moisture-conducting fabrics.

[0005] The national standard GB / T 21655.2-2019 Assessment of moisture management properties of textile fabrics Part 2: Dynamic moisture transmission method respectively provides requirements for moisture absorption and quick-drying and sweat absorption and quick-drying fabrics. The determination of the related performance of the fabric in the standard is dependent on the test results of the liquid water dynamic transmission performance tester. The test indexes of the sweat absorption and quick-drying are "wet time of the penetration surface", "water absorption rate of the penetration surface" and "one-way transmission index", wherein the one-way transmission index is an important index for testing one-way wetting. The standard tests the related data by the equipment, and then calculates, and the value of the one-way transmission index is accurately divided in the standard, and the corresponding test index reaches three levels to determine that it has sweat absorption and quick-drying. Due to the limitation of the accuracy of the instrument, it is inevitable to have misjudgment.

[0006] The sweat absorption and quick-drying performance of the conventional fabric is usually obtained by coating finishing with chemical additives, and the sweat absorption and quick-drying performance gradually decreases after multiple wearing and washing, and the harm of the clothing coated by the coating finishing to the human body also needs to be investigated. In order to cater to the consumer concept of advocating health and nature, enterprises also gradually reduce the coating finishing when developing products, and how to realize the functionality of natural materials is a difficult problem for enterprises to develop. The products developed by most enterprises achieve the one-way wetting and quick-drying function, but there is no related test standard at present, and the sweat absorption and quick-drying standard of GB21655.2-2019 can only be used for testing, but the sweat absorption and quick-drying indexes cannot be reached. SUMMARY

[0007] The purpose of the present application is to provide a test method for the one-way wetting and quick-drying function of a fabric.

[0008] The purpose of the present application is achieved by the following technical solutions.

[0009] A test method for the one-way wetting and quick-drying function of a fabric, comprising the following steps:

[0010] (1) cutting the fabric into a circular sample, calculating the original mass m0 and the mass m after being soaked with water drops according to the test method of 8.1 in GB / T21655.1-2008, and recording the mass difference between m and m0 as P;

[0011] (2) cutting the fabric into two square samples, respectively numbered as square sample 1 and square sample 2, and taking the center of the square sample as the center of the circle, marking a circle with the same diameter as step (1) on square sample 1 and square sample 2;

[0012] (3) Place square sample 1 with the front side up on qualitative filter paper A, and place square sample 2 with the back side up on qualitative filter paper B, draw the salt solution, and drop it onto the center of the fabric at the vertical upper side of the center of square sample 1 and square sample 2, respectively, and simultaneously start timing, and observe whether the maximum of the diffusion circle of square sample 1 and square sample 2 reaches the diameter length of the circular mark described in step (2), and after the observation, simultaneously remove square sample 1 and square sample 2, and observe the state of the water stains on the filter paper;

[0013] (4) If only the solution diffusion circle of square sample 1 or square sample 2 reaches the diameter length of the circular mark described in step (2), and the water stain on qualitative filter paper B or qualitative filter paper A is completely wet in patches, and the water stain on the other qualitative filter paper A or qualitative filter paper B is in scattered spots or not wet at all, then the fabric has a one-way moisture transfer and quick drying function; if the solution diffusion circle of square sample 1 and square sample 2 does not reach the diameter length of the circular mark described in step (2), and the water stain on qualitative filter paper B or qualitative filter paper A is completely wet in patches, and the water stain on the other qualitative filter paper A or qualitative filter paper B is in scattered spots or not wet at all, then the fabric only has a one-way moisture transfer function; if the solution diffusion of square sample 1 and square sample 2 does not reach the diameter length of the circular mark described in step (2) or both reach the diameter length of the circular mark described in step (2), and the water stain on qualitative filter paper B or qualitative filter paper A is in scattered spots or not wet at all, and the water stain on the other qualitative filter paper A or qualitative filter paper B is in scattered spots or not wet at all, then the fabric does not have a one-way moisture transfer and quick drying function.

[0014] Further, the diameter of the circular sample described in step (1) is 2±0.2 cm.

[0015] Further, the side length of the square sample is 10±0.2 cm.

[0016] Further, in step (3), the front side is the side that does not directly contact the skin, and the back side is the side that directly contacts the skin.

[0017] Further, the salt solution in step (3) is a sodium chloride solution.

[0018] Further, the concentration of the salt solution in step (3) is 9 g / L.

[0019] Further, the amount of salt solution dropped onto the center of the fabric in step (3) is (P+0.2) g; the dropping speed onto the center of the fabric is 1 drop per second.

[0020] Further, in step (3), the vertical upper side of the center refers to 1 cm above the center vertically.

[0021] Further, the diameter of the qualitative filter paper in step (4) is 9 cm.

[0022] Further, whether the diameter of the circular mark in step (2) reaches the length is that whether it reaches 2 cm within 5 s.

[0023] Further, a testing method for the one-way moisture transfer and quick drying function of a fabric includes the following steps:

[0024] (1) Cut three circular samples with a diameter of 2 cm above 200 cm from the fabric selvage, and calculate the original mass m0 and the mass m after being soaked and dripping water according to the testing method in 8.1 of GB / T21655.1-2008, and the mass difference between m and m0 is P;

[0025] (2) Cut two square samples with a size of 10 cm x 10 cm above 200 cm from the fabric selvage, and number them as square sample 1 and square sample 2, respectively, and make a circular mark with a diameter of 2 cm on the square sample 1 and square sample 2, respectively, with the center of the square sample as the center of the circle;

[0026] (3) Place the square sample 1 with the front face upward on the circular qualitative filter paper A with a diameter of 9 cm, and place the square sample 2 with the back face upward on the circular qualitative filter paper B with a diameter of 9 cm, use two pipettes to suck 9 g / L NaCl solution (P+0.2) g, respectively, and drop it at 1 cm vertically above the center of the square sample 1 and square sample 2, respectively, and start timing, and observe the maximum length of the diffusion circle of the square sample 1 and square sample 2 within 5 s (the circle is drawn for easy visual observation), and after observation, remove the square sample 1 and square sample 2 at the same time, and observe the state of the water stain on the filter paper, and the water stain state is shown in the following table. Figure 1

[0027] (4) If only the solution of the square sample 1 or square sample 2 reaches the length of 2 cm at the maximum of the diffusion circle within 5 s, and the water stain on the qualitative filter paper B or qualitative filter paper A is in the state shown in b of Figure 1 , and the water stain on the other qualitative filter paper A or qualitative filter paper B is in the state shown in a of Figure 1 or the state shown in c of Figure 1 , then the fabric has the one-way moisture transfer and quick drying function; if the solution of the square sample 1 and square sample 2 does not reach 2 cm at the maximum of the diffusion circle within 5 s, and the water stain on the qualitative filter paper B or qualitative filter paper A is in the state shown in b of Figure 1 , and the water stain on the other qualitative filter paper A or qualitative filter paper B is in the state shown in a of Figure 1 ​the state shown in a (scattered dot shape) or Figure 1 the state shown in c (completely unwetted), then the fabric only has a one-way moisture transfer function; if the solution of square sample 1 and square sample 2 does not reach 2 cm or reaches 2 cm within 5 s, and the water stain state on qualitative filter paper B or qualitative filter paper A is as shown in Figure 1 the state shown in a (scattered dot shape) or Figure 1 the state shown in c (completely unwetted), and the water stain state on the other qualitative filter paper A or qualitative filter paper B is as shown in Figure 1 the state shown in a (scattered dot shape) or Figure 1 the state shown in c (completely unwetted), then it is determined that the fabric does not have a one-way moisture transfer and quick drying function.

[0028] Compared with the prior art, the present application has the following advantages and beneficial effects:

[0029] 1. The test method of the present application is fast, simple to operate, and more intuitive in effect.

[0030] 2. The test method of the present application not only solves the problem that there is no test method and standard for one-way moisture transfer and quick drying function fabric, and provides a test basis for the functionality of new products for enterprises, but also does not depend on high-end equipment, and enterprises can test the related products themselves after production, without waiting for the results of detection agencies, which is beneficial to the rapid development of enterprise products. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 Fig. 1 is a diagram of the solution penetration state on the filter paper on which the sample of the present application is padded, i.e. scattered dot shape, completely wetted, and completely unwetted. DETAILED DESCRIPTION

[0032] The technical solutions of the present application are further described below in combination with specific embodiments.

[0033] Embodiment 1

[0034] A test method for the one-way moisture transfer and quick drying function of a fabric, comprising the following steps:

[0035] (1) Cut three circular samples 3 with a diameter of 2 cm at a distance of more than 200 cm from the fabric edge, record the original mass m0 and the mass m after immersion and dripping water according to the test method in 8.1 of GB / T21655.1-2008, and calculate the mass difference of m0 and m. The test results are shown in Table 1.

[0036] Table 1

[0037] Sample m0(g) m (g) Mass difference (g) Sample 1 0.060 0.119 0.059 Sample 2 0.062 0.119 0.057 Sample 3 0.053 0.120 0.067 / / / Average 0.061 (value 0.06)

[0038] (2)Cut two 10cm x 10cm square samples above 200cm from the fabric selvedge, and number them as square sample 1 and square sample 2 respectively. Make a 2cm diameter circular mark on the center of square sample 1 and square sample 2 respectively.

[0039] (3) Place square sample 1 on a 9cm diameter qualitative filter paper A with the front side up, and place square sample 2 on a 9cm diameter qualitative filter paper B with the back side up. Use two pipettes to take 0.26mL (0.26g) of 9g / L NaCl aqueous solution respectively, and drop it on the center of square sample 1 and square sample 2 respectively at 1 drop / s, and record the time. Observe whether the maximum diffusion circle of square sample 1 and square sample 2 reaches 2cm within 5s. After observation, remove square sample 1 and square sample 2, and observe the state of the water stains on the filter paper.

[0040] (4) If only the maximum diffusion circle of square sample 1 reaches 2cm within 5s, and the state of the water stain on filter paper B is as shown in b of Figure 1 (completely wet in patches), and the state of the water stain on filter paper A is as shown in c of Figure 1 (not wet at all), then the fabric is determined to have a one-way moisture transfer and quick drying function.

[0041] Example 2

[0042] A method for testing the one-way moisture transfer and quick drying function of a fabric, comprising the following steps:

[0043] (1) Cut three 2cm diameter circular samples above 200cm from the fabric selvedge. Record the original mass m0 and the mass m after soaking and dripping water according to the test method of 8.1 in GB / T21655.1-2008, and calculate the mass difference between m0 and m. The test results are shown in Table 2.

[0044] Table 2

[0045] Sample m0(g) m (g) Mass difference (g) Sample 1 0.074 0.146 0.072 Sample 2 0.076 0.149 0.073 Sample 3 0.065 0.152 0.087 / / / Average 0.077 (value 0.08)

[0046] (2) Cut two 10cm x 10cm square samples above 200cm from the fabric selvedge, and number them as square sample 1 and square sample 2 respectively. Make a 2cm diameter circular mark on the center of square sample 1 and square sample 2 respectively.

[0047] (3) Place square sample 1 face up on a 9 cm diameter circular qualitative filter paper A, and place square sample 2 back face up on a 9 cm diameter circular qualitative filter paper B. Use two pipettes to take 0.28 mL of 9 g / L NaCl aqueous solution, and drop 1 drop per second vertically 1 cm above the center of square sample 1 and square sample 2, respectively, and at the same time, observe whether the maximum of the diffusion circles of square sample 1 and square sample 2 reaches 2 cm within 5 s. After observation, remove square sample 1 and square sample 2 at the same time, and observe the state of the water stains on the filter paper.

[0048] (4) The maximum of the diffusion circles of square sample 1 and square sample 2 does not reach 2 cm within 5 s, but the state of the water stains on filter paper B is as shown in b of Figure 1 (a scattered spot shape), and the state of the water stains on filter paper A is as shown in a of Figure 1 , so it is determined that the fabric only has a one-way moisture transfer function and does not have a quick-drying function.

[0049] Example 3

[0050] A test method for the one-way moisture transfer and quick-drying function of a fabric includes the following steps:

[0051] (1) Cut 3 pieces of 2 cm diameter circular samples above 200 cm from the fabric selvage, and record the original mass m0 and the mass m after soaking and dripping water according to the test method of 8.1 in GB / T21655.1-2008, and calculate the mass difference between m0 and m. The test results are shown in Table 3.

[0052] Table 3

[0053] Sample m0(g) m (g) Mass difference (g) Sample 1 0.051 0.107 0.056 Sample 2 0.053 0.106 0.053 Sample 3 0.049 0.108 0.059 / / / Average 0.056 (value 0.06)

[0054] (2) Cut two 10 cm x 10 cm square samples above 200 cm from the fabric selvage, and number them as square sample 1 and square sample 2, respectively. Make a 2 cm diameter circular mark on square sample 1 and square sample 2, respectively, with the center of the square sample as the center;

[0055] (3) Place square sample 1 face up on a 9 cm diameter circular qualitative filter paper A, and place square sample 2 back face up on a 9 cm diameter circular qualitative filter paper B. Use two pipettes to respectively take 0.26 mL of 9 g / L NaCl aqueous solution, and drop it at a speed of 1 drop / s to the center of the fabric 1 cm vertically above the center, and simultaneously time, observe whether the maximum of the diffusion circle of square sample 1 and square sample 2 reaches 2 cm within 5 s. After observation, simultaneously remove square sample 1 and square sample 2, and observe the state of the water stains on the filter paper.

[0056] (4) The maximum of the diffusion circle of square sample 1 and square sample 2 both reaches 2 cm within 5 s, the state of the water stains on filter paper B is as shown in a of FIG. 6 (scattered dots), and the state of the water stains on filter paper A is as shown in c of FIG. 6 (completely unwetted), so it is determined that the fabric does not have the one-way wet permeation and quick drying function. Figure 1 Figure 1

[0057] Example 4

[0058] A testing method for the one-way wet permeation and quick drying function of a fabric, comprising the following steps:

[0059] (1) Cut 3 pieces of 2 cm diameter circular samples above 200 cm from the fabric selvedge, and record the original mass m0 and the mass m after water dripping after soaking according to the testing method of 8.1 in GB / T21655.1-2008, and calculate the mass difference of m0 and m. The testing results are shown in Table 4.

[0060] Table 4

[0061] Sample m0(g) m (g) Mass difference (g) Sample 1 0.047 0.052 0.005 Sample 2 0.045 0.054 0.009 Sample 3 0.049 0.054 0.005 / / / Average 0.006 (value 0)

[0062] (2) Cut two 10 cm x 10 cm square samples above 200 cm from the fabric selvedge, and number them as square sample 1 and square sample 2. Make a 2 cm diameter circular mark on square sample 1 and square sample 2 with the center of the square sample as the center;

[0063] (3) Place square sample 1 face up on a 9 cm diameter circular qualitative filter paper A, and place square sample 2 back face up on a 9 cm diameter circular qualitative filter paper B. Use two pipettes to respectively take 0.2 mL of 9 g / L NaCl aqueous solution, and drop it at a speed of 1 drop / s to the center of the fabric 1 cm vertically above the center, and simultaneously time, observe whether the maximum of the diffusion circle of square sample 1 and square sample 2 reaches 2 cm within 5 s. After observation, simultaneously remove square sample 1 and square sample 2, and observe the state of the water stains on the filter paper. ​​

[0064] (4) In 5s, the maximum diffusion circle of square sample 1 and square sample 2 did not reach 2cm, the water stain state on filter paper B was as shown in a of FIG. 6 (scattered dot shape), the water stain state on filter paper A was as shown in c of FIG. 6 (completely unwetted), thus it was determined that the fabric did not have the one-way moisture transfer and quick drying function. Figure 1 (4) In 5s, the maximum diffusion circle of square sample 1 and square sample 2 did not reach 2cm, the water stain state on filter paper B was as shown in a of FIG. 6 (scattered dot shape), the water stain state on filter paper A was as shown in c of FIG. 6 (completely unwetted), thus it was determined that the fabric did not have the one-way moisture transfer and quick drying function. Figure 1 (4) In 5s, the maximum diffusion circle of square sample 1 and square sample 2 did not reach 2cm, the water stain state on filter paper B was as shown in a of FIG. 6 (scattered dot shape), the water stain state on filter paper A was as shown in c of FIG. 6 (completely unwetted), thus it was determined that the fabric did not have the one-way moisture transfer and quick drying function.

[0065] The above merely provides a specific implementation of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can think of changes or replacements within the technical range disclosed by the present application without creative labor, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be limited by the protection scope defined in the claims.

Claims

1. A test method for the one-way moisture-wicking and quick-drying function of fabric, characterized in that, Includes the following steps: (1) Cut three circular samples with a diameter of 2±0.2cm at a distance of more than 200cm from the edge of the fabric. According to the test method in 8.1 of GB / T21655.1-2008, calculate the original mass m~0~ and the mass m after being soaked and dripped with water. The mass difference between m and m~0~ is recorded as P. (2) Cut two square samples with a side length of 10±0.2cm at a distance of more than 200cm from the edge of the fabric. They are numbered as square sample 1 and square sample 2 respectively. With the center of the square sample as the center, make a circular mark with a diameter of 2cm on square sample 1 and square sample 2 respectively. (3) Place square sample 1 face up on a circular qualitative filter paper A with a diameter of 9cm, and square sample 2 face down on a circular qualitative filter paper B with a diameter of 9cm. Use two pipettes to draw sodium chloride solution with a concentration of 9g / L, with a drop volume of (P+0.2)g and a drop rate of 1 drop / second. Drop the solution quickly onto the center of the filter paper 1cm above the center of square sample 1 and square sample 2 respectively, and start timing at the same time. Observe whether the maximum diffusion circle of square sample 1 and square sample 2 reaches 2cm within 5s. After observation, remove square sample 1 and square sample 2 at the same time and observe the state of water stains on the filter paper. The state of water stains includes scattered, completely wetted or completely unwetted. (4) If only the solution of square sample 1 or square sample 2 reaches a maximum diffusion circle of 2 cm within 5 s, and the water stains on qualitative filter paper B or qualitative filter paper A are completely wetted in sheets, while the water stains on the other qualitative filter paper A or qualitative filter paper B are scattered or completely unwetted, then the fabric has a one-way moisture-wicking and quick-drying function; if the solution of square sample 1 and square sample 2 does not reach a maximum diffusion circle of 2 cm within 5 s, and the water stains on qualitative filter paper B or qualitative filter paper A are in sheets... If the water stains on the other qualitative filter paper A or qualitative filter paper B are either completely wetted or scattered or completely unwetted, then the fabric only has a one-way moisture-wicking function. If the solutions of square sample 1 and square sample 2 do not spread to 2cm or both reach 2cm within 5s, and the water stains on qualitative filter paper B or qualitative filter paper A are either scattered or completely unwetted, and the water stains on the other qualitative filter paper A or qualitative filter paper B are either scattered or completely unwetted, then the fabric is determined not to have a one-way moisture-wicking and quick-drying function.

2. The test method for the one-way moisture-wicking and quick-drying function of fabric according to claim 1, characterized in that, In step (3), the front side is the outer layer of the fabric that does not come into direct contact with the skin, and the back side is the inner layer that comes into direct contact with the skin.

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