Heat flow fabric cool feeling test device and test method

Abstract

The invention relates to a heat flow fabric cool feeling test device and test method. The test device is characterized by comprising a probe and an experiment table provided with a thermal insulation board; the thermal insulation board is covered with a thermal insulation glass shield; the probe comprises an aluminum rack internally provided with a constant temperature heat source and a temperature sensor; heat conduction silicone grease is uniformly smeared at the lower surface of the aluminum rack and is used for fixing 1-2 heat flow sensors; soft heat conduction silicon gel is smeared at the surfaces, contacting a fabric sample, of the heat flow sensors. The test device also comprises a host and a computer; the host is provided with a heat flow meter and an intelligent PID temperature control meter. The temperature sensor feeds a temperature signal back to the intelligent PID temperature control meter which controls the constant temperature heat source to heat, so that the probe is constant in temperature, the probe is placed on the fabric sample, the heat flow sensors generate a signal which is sent to the heat flow meter, and the heat flow meter is communicated with the computer. The test device and test method can conveniently, reliably and fast detect contact instant cool feeling and durable cool feeling performance of various fabrics.

Description

technical field [0001] The invention relates to a heat flow type fabric cool feeling testing equipment and testing method, especially a kind of cool feeling fabrics, summer mats and cool bedding, cushions, seat cushions, sofa surfaces, chair covers, bedding or pet bedding products. Cooling sensation testing equipment and testing method. Background technique [0002] In the hot summer, summer mats and clothing with a cool feeling have always been popular among consumers. For all kinds of mats, cooling cushions, cushions and thicker cooling fabrics, mainly through the larger mass and heat capacity, it absorbs the heat of the human body at the moment of contact, and has an excellent cooling feeling at the moment of contact. For taking light and thin cool-feeling fabrics, the following methods are often used to achieve: (1) Prepared from cool-feeling fibers: cool-feeling fibers refer to natural mineral materials such as jade powder, shell powder, mica powder, etc. Or highly th...

AI Technical Summary

Problems solved by technology

(2) Obtained by post-finishing of cooling aids: for example, substances that absorb heat when encountering water, such as xylitol, or menthol microcapsules with cooling effects, etc. are added in the post-finishing of fabrics; Poor performance, unsustainable, and the application of this additive will affect the effect of other additives, etc., and xylitol cooling additives need to meet sweat to absorb heat, and do not have an instant cooling sensation

[0009] (1) It cannot fully reflect the cooling characteristics of the fabric, and cannot directly test the continuous heat conduction or heat dissipation performance of the fabric

On the one hand, there is no constant temperature heat source on the heat flow probe. During the test process, the temperature of the probe continues to decrease until it is balanced with the sample to be tested, resulting in a continuous decrease in the temperature difference between the probe and the environment during the test process, making the temperature difference conditions of the test constantly changing. Although The thermal conductivity of the fabric can be judged by the slope of the heat flow versus time curve, but it needs to be calculated, which increases the complexity and uncertainty factors; on the other hand, the T-Box probe needs to move to the surface of the sample in the heated state, During this process, the surface temperature of the T-Box probe will change, resulting in test errors

[0010] (2) The pressure of the heat flow probe on the fabric is only 10g / cm 2 , too light, suitable for testing the cool feeling of summer clothing, but not suitable for relatively thick cool feeling bedding materials; and when the fabric has small wrinkles, it will cause a large error

[0011] (3) The heat flow probe is a flat hard material, which does not reflect the soft surface of the skin, and cannot ensure good contact with the flexible textile sample to be tested, resulting in test errors

[0012] (4) The instrument only gives an independent q max value, large error

[0015] In terms of testing equipment, Japan's KES-F7ThermoLabo II instrument is bulky, expensive, and not easy to carry and use commercially; in terms of coolness test and evaluation, the above methods can only reflect the coolness value of the fabric at the moment of contact

[0016] Therefore, existing fabric cooling feeling test equipment and method all can not satisfy market demand

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