ВИЗНАЧЕННЯ ОПТИМАЛЬНИХ ПАРАМЕТРІВ ТЕПЛОЗАХИСНИХ ВЛАСТИВОСТЕЙ НАТУРАЛЬНИХ ТА СИНТЕТИЧНИХ НАПОВНЮВАЧІВ ДЛЯ ВИГОТОВЛЕННЯ ВЕРХНЬОГО ДИТЯЧОГО ОДЯГУ

Abstract

Urgency of the research. The main functional property of children's outerwear is a heat-shielding property. The research of the heat-shielding properties of natural and synthetic fillers for children's outerwear production is quite multifaceted, complex and insufficiently studied question. This is due to the fact that for the manufacture of children's outerwear new fabrics for the top and lining, as well as fillers of various materials are used. Target setting. Determination of the optimal parameters of the heat-shielding properties of natural and synthetic fillers for children's outerwear production is an important task, since the greatest value of clothing is for the processes of heat exchange of the human body with the environment and to ensure normal thermoregulation. Actual scientific researches and issues analysis. Considerable attention has been paid to the prediction of the heatprotective properties of winter clothing or its construction, the substantiation of the choice of a package of materials for the manufacture of children's outerwear, mathematical modelling of the heat transfer through textile materials and to the physical model of thermal resistance determination. Uninvestigated parts of general matters defining. The heat-shielding properties of natural and synthetic fillers for the outerwear of children are practically not studied, and the calculations of the optimal parameters of these properties are fragmentary. The research objective. to determine the optimal parameters of the heat-shielding properties of natural and synthetic fillers for children's outerwear production. The statement of basic materials. It was found that the heat-shielding properties of children's jackets with feather-down and synthetic textile filler depend on the type of filler, thickness, surface density and breathability of the clothing package. Conclusions. Children's jackets with feather-down filler with a smaller thickness have the lowest level of breathability, which provides them with the best heat-shielding properties. The higher level of breathability inherent in a children's jacket with synthetic textile filler with a significantly greater thickness of the package can provide high levels of the heat-shielding properties. Mathematical equations to determine the optimal parameters of the heat-shielding properties of natural and synthetic fillers for children's outerwear production are suggested.