Clothing for protection against critical low temperatures is constantly being improved. Modern materials and alloys with shape memory are used for its production. This article presents a method of incorporation of such materials into textile structures. The peculiarity of these alloys is shape memory as a result of training in a different temperature range taking into account the influence of various impurities. The purpose of this article is to develop and evaluate a methodology for shape memory training of functional parts for use in clothing at negative temperatures. In the course of the research, the current conditions for training materials with shape memory that differ in the boundary temperatures, the number of training cycles and the ways of forming the thermal conditions were investigated, The object of this article is thin metal- coated threads (wires) based on the binary alloy of nickel and titanium - Nitinol (NiTi). The geometric parameters of the thread (thin wire) are justified by the geometric parameters of the textile structure, which is specially designed to determine the diameter of threads set at 0.5 mm (based on the mean thickness of materials for winter protective clothing). A thermomechanical training technique was developed. It takes into account the chemical composition of the NiTi-based functional alloy, loading mode, rest mode, number of training cycles, fixation of the desired shape (using a steel mandrel) for set temperature conditions (that are assured by an autonomous refrigerated container and thermostat). Two phase shapes of a thin part were studied - a straight shape and an angular bend shape (for an angle of 2 degrees). It has been established that the developed method of thermomechanical training, including 200 cycles of training and temperature interval from +200C to -180C allowed achieving the form memory effect for trained parts with its direct and reverse response to the change of set temperatures. The obtained result makes it possible to embed the prepared thin metal threads (wires) into the textile structure to control the shape of the volume and overall thermal insulation of the functional clothing for protection against the cold.

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