Using tqd-g1 air permeability meter to test the air permeability of clothing fabric

Abstract: air permeability is an important performance index to determine whether the fabric is comfortable or not This paper uses Labthink blue light tqd-g1 air permeability tester to test the air permeability of a clothing fabric, and briefly describes the test process, introduces the equipment parameters, application scope and other information, which can provide a reference for the textile industry to test the air permeability of products Keywords: air permeability, air permeability, air permeability, air permeability tester, textiles, fabrics, constant flow pressure difference, constant pressure difference flow measurement 1, meaning air permeability is a physical index to characterize the air permeability in the tested samples, mainly for porous materials and other materials with large air permeability, such as textiles, sponges, leather, etc For fabric materials, the air permeability is related to the number and size of warp and weft yarn gap and fiber gap, warp and weft density, yarn twist, fiber property, yarn structure, fabric thickness and other factors According to the specific use of the fabric, it has different air permeability For example, the air permeability of the fabric used for making parachute should be strictly controlled within the specified range If the air permeability is too large, the parachute cannot be inflated and full, and if the air permeability is too small, the stability of the parachute is poor, or even damaged For the fabric used as carpet, it is required to have relatively high air permeability Degree The air permeability of all fabrics should be changed to ensure the comfort of clothing For example, in summer, the air permeability of clothing should be large, with good heat dissipation, while in winter, the air permeability of clothing should be small, so as to improve the thermal insulation effect Therefore, the appropriate air permeability is one of the preconditions for the fabric to have good performance Fig 1 fabrics for various purposes 2 At present, there are two test methods for air permeability, i.e constant flow pressure difference method and constant pressure difference flow measurement method The constant pressure difference flow measurement method is mainly used for fabric air permeability, and the reference standard is GB / T 5453-1997 determination of air permeability of textile fabrics 3 Test sample fabric material of a certain brand for clothing 4 In this paper, tqd-g1 air permeability tester independently developed and produced by Jinan Languang Electromechanical Technology Co., Ltd is used to test the air permeability of fabric samples Figure 2 test principle of tqd-g1 air permeability tester Constant flow pressure difference method: after the sample is clamped, adjust the air flow to make the air flow through the sample stable at a constant flow, then test the pressure difference between the two sides of the sample under this condition, and then calculate the air flow resistance and other parameters Constant pressure difference flow measurement method: after the sample is clamped, adjust the pressure to form a constant pressure difference on both sides of the sample, and calculate the permeability of the sample and other parameters by measuring the air flow through the given area of the sample in a certain period of time 4.2 scope of application (1) applicable to the test of air permeability and air resistance of automotive interior materials, such as polyurethane, PVC, leather, textiles, nonwovens, etc (2) It is suitable for air permeability test of polymer porous elastic materials, such as sponge, etc (3) It is suitable for air permeability test of textile materials, such as cloth, non-woven fabric, etc (4) It is suitable for air permeability test of leather materials (5) It can also be extended to test the air permeability of paper materials, such as daily paper drawing and rolling (6) It can meet many national and international standards, such as ISO 9237, ISO 4638, ISO 5636, GB / T 10655, GB / T 5453, GB / T 4689.22, GB / T 13764, ASTM d737, TAPPI T460, JIS p8117, etc 4.3 the measurement range of equipment parameter differential pressure is 0 ~ 1kPa, and the measurement range of flow is 0 ~ 1800 L / h Two measuring methods, constant pressure difference and constant flow, are available for users to choose freely High precision electronic air flow and air pressure sensors ensure the accuracy of test data The system adopts microcomputer control, liquid crystal display, menu interface and PVC control panel, which is convenient for users to carry out test operation and data check quickly 5 Test process (1) cut 10 samples with a diameter of 12 cm from the surface of the fabric sample (2) Clamp the cut sample piece onto the air permeability tester (3) Adjust the pressure control valve and adjust the pressure difference on both sides of the test piece When the pressure difference on both sides of the sample reaches the set value, the test stops, and the equipment automatically displays the air flow through the sample under the set pressure difference (4) Repeat steps (2) and (3) until all 10 samples are tested 6 The results showed that the air permeability of 10 samples were 13.15 L / min, 13.36 L / min, 13.60 L / min, 13.13 L / min, 13.11 L / min, 13.29 L / min, 13.53 L / min, 13.48 L / min, 13.29 L / min and 13.35 L / min, respectively 7 Conclusion air permeability is an important property of fabric, which is closely related to the performance of fabric In this paper, by testing the air permeability of a garment fabric, a high cost performance testing equipment tqd-g1 air permeability tester is introduced, which is used for testing the air permeability The equipment has the advantages of wide application range, simple operation, high testing accuracy and good repeatability of test results Labthink Languang has always been committed to providing professional and intimate packaging testing equipment and services for global customers In addition to the air permeability tester, the testing equipment and services Labthink Languang can provide cover the barrier, tensile performance, puncture resistance, friction performance, impact resistance, tear performance, sealing performance and other aspects of packaging materials You can log in to Jinan Languang company Check relevant equipment information or call directly for consultation The more you understand, the more you trust! 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