Method for testing wet resistance of fabric

Abstract

The invention relates to a method for testing the wet resistance of a fabric, which includes the following steps: water levels of different distances from the lower surface of a tested fabric are sequentially arranged in a wet penetration cup; under certain controlled water temperatures and environmental conditions, the wet penetration amount of the tested fabric is sequentially tested, and the data is regressed to obtain the wet penetration amount when the distance from the water level to the lower surface of the fabric is zero, and the wet resistance of the fabric is obtained by calculationaccording to the wet resistance formula. The method for testing the wet resistance of a fabric uses the relatively simple wet penetration cup method for testing the wet penetration amount when the distance from the water level to the lower surface of the fabric is zero, calculates the wet resistance, solves the problem that no internal conjunction exists between the two indexes of the wet resistance of the fabric measured by the original sweating plane table and the wet penetration amount of the fabric measured by the wet penetration cup method, and has low investing cost, simple and convenient operation and wide application range.

Description

technical field [0001] The invention belongs to the technical field of heat and humidity comfort testing of clothing materials, in particular to a method for testing the moisture resistance of fabrics. Background technique [0002] At present, there are two types of indicators to characterize the moisture permeability of fabrics: moisture permeability and moisture resistance. Moisture permeability is the 24-hour water vapor transmission rate of the fabric measured under certain experimental conditions by using a moisture-permeable cup, and the unit is g / m24h. This type of method is simple and easy to implement, and has a wide range of applications. However, the standards of various countries are different, and the experimental methods are different. , The results of the same sample under different standards are often not comparable. For example, the American standard ASTME 96-66 Method B modified is different from my country’s GB / T12704-91 standard. If you only compare the da...

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Problems solved by technology

[0003] At present, due to the huge difference in the test equipment and test methods of the two types of indicators that indicate the moisture permeability of the fabric, the moisture permeability and the moisture resistance, so that there is no intrinsic relationship between them, and sometimes even contradictory results appear. It makes it difficult to objectively and accurately evaluate the moisture permeability of fabrics

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