Method for judging one-way sweat guiding performance of fabric material

Abstract

The invention relates to a method for judging one-way sweat guiding performance of a fabric material. The method comprises the following steps of flatly placing a liquid level sensor on a light-transmitting plate, placing a sample above the liquid level sensor, and conveying simulated sweat containing an ultraviolet fluorescent indicator to the surface of the sample; meanwhile, triggering a signal transmitter to send pulse signals to an irradiation device and an industrial camera serving as an image acquisition device so that the irradiation device and the industrial camera emit ultraviolet strong pulse light at the same frequency to irradiate the light-transmitting plate from the lower part of the light-transmitting plate and acquire images from the lower side of the light-transmitting plate; and collecting light spots according to time intervals to form an image sequence, acquiring an array of the area of the light spots after processing, setting the first derivative of the array to time to be the change speed of the size of the light spots, and using the change speed of the size of the light spots for judging the sweat discharging capacity of a sample. The one-way sweat guiding performance of the fabric is measured through a liquid water permeation capacity, and the relation between the related performance of the fabric and the comfort of the human body is reflected more scientifically and reasonably.

Description

technical field [0001] The invention relates to a method for measuring the sweat-conducting performance of a material, in particular to a method for measuring the unidirectional sweat-conducting performance of a fabric material. Background technique [0002] Keeping the skin surface dry under conditions of heavy exercise is an important performance index of fabric materials for intimate apparel. Under the premise of such a large amount of exercise and at the same time under extremely high relative humidity conditions, it is difficult for the sweat on the skin surface to be output to the outer surface through the close-fitting clothing to evaporate. Therefore, once the clothing is soaked in sweat, all the gaps in the fabric used in the clothing will be filled with sweat The blockage of exchange through the interstices of the fabric, in the form of vaporization or otherwise, further causes extreme discomfort physiologically. [0003] There is currently no satisfactory method ...

AI Technical Summary

Problems solved by technology

[0004] The first situation: water or liquid can quickly penetrate the fabric to the other side and drip along the electrode. At this time, most of the water reaches the root of the electrode instead of spreading along the plane. The peripheral electrode cannot detect the change of resistance, that is to say, this part of water It is not included in the collected physical quantities, and the test results reflect that the diffusion ability is not good;

[0005] The second situation: all the water or sweat is diffused to the fabric, and all the water is absorbed by the fabric. In this case, the sweat is fully absorbed by the fabric but not excluded from the fabric. The sweat gradually fills the fabric voids and finally completely seals the fabric. Blocking the exchange channel between the body surface and the outside world, the part of the sweat that cannot be absorbed by the fabric will flow along the body surface, causing physiological discomfort

[0007] Therefore, it is not correct to judge the relationship between fabric performance and human comfort under conditions of large amount of exercise and high relative humidity by the change of resistance value and indirectly by water absorption and diffusion capacity.

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