Testing and evaluation of thermal insulation performance of down jackets in simulated practical application scenarios.

Aiming at the problem that the existing thermal insulation test methods and evaluation standards of clothing fabrics cannot intuitively and fully reflect the thermal insulation performance of clothing products in actual use, the cooling rate method was adopted to construct an environmental climate simulation chamber and a warm body dummy system, and the warm dummy was used to objectively test down jacket clothing at a certain ambient temperature. The objective test results were verified by the subjective evaluation of the thermal performance of down jacket garment and the infrared thermal imaging test. The results show that the thermal property and cooling rate of the garments are inversely proportional under different simulated ambient temperatures. Through subjective evaluation and infrared thermal imaging verification, a set of evaluation system that can intuitively, comprehensively and accurately reflect the thermal performance of down jacket garment under different environmental conditions is constructed, which can meet the specific requirements of producers and consumers for the thermal performance of clothing, which has strong theoretical and practical significance. [ABSTRACT FROM AUTHOR]