Comprehensive assessment of properties of waterproof materials for special clothing

Prolonged exposure to water negatively affects human health, leads to various diseases and reduces labor productivity. One of the main roles in ensuring waterproof properties of products is played by the materials from which these products are made. The acquisition of special properties by textile materials is achieved through the special finishing. Each type of such finishing serves to improve a specific consumer property. The most common ways of imparting waterproof properties are water - repellent impregnation and coating. The range of modern waterproof materials allows clothing manufacturers to significantly ease the package of materials while maintaining a comfortable microclimate in the undergarment space and a high degree of protection from unfavorable weather conditions. The aim of the work is to evaluate the properties of moisture - protective materials for the manufacture of special clothing using a comprehensive assessment methodology, which makes it possible to determine the quality of materials at the stage of incoming inspection. The method differs in that it ensures the selection of the most suitable material to perform the protective function of the product. Based on the current technical regulations and analysis of literature sources, the single quality indicators were selected. To determine the weight of the indicators, an expert method was used, which is based on assigning ranks to individual indicators. To determine the quality indicators we used both standard methods and author's methods that exclude the shortcomings of standard ones. As objects of the study were chosen moisture - protective materials having a woven base of polyester yarns, made by plain weave and containing in its structure a membrane layer made of polyetherurethane with various additives. In the course of the study, the effectiveness of application of the methodology of complex evaluation of properties of moisture - protective materials of similar structures and raw material composition for selecting a sample with the maximum degree of protection was established.