INNOVATIONS EQUIPMENT FOR DETERMINING CAPILLARITY OF FIBROUS MATERIALS FOR CLOTHES
Modern textile materials entering the world market do not always correspond to those physical, mechanical and hygienic characteristics, which are indicated in the corresponding accompanying documentation. This creates considerable difficulties in the manufacture of sewing products of various purposes and, most importantly, affects their final quality and service life. In this regard, there is a need for a comprehensive check of modern textile materials to meet the necessary level of their operational properties. For example, one of the most important indicators of hygiene of textile materials is their ability to interact with liquids, such as water or its chemical compounds. Analysis of literary sources showed that the least technically secured is the technique of studying the capillarity of materials, that is, their ability to raise the liquid with fibers at a certain height. This is due to the fact that the specified physical and chemical process is difficult to study, because it is associated with many indicators of materials: the type of their interweaving, thickness, raw material content, the size of fibers, the type of decoration, etc. This article provides a comprehensive analysis of existing techniques and techniques for the study of capillarity over the past 30 years. In particular, existing and projected special devices are considered, the basis of which is the principle of interaction of the experimental material and the column of liquid. In addition, contemporary developments of the Ukrainian scientists in this area are proposed for consideration, the achievements of which have been confirmed by their patentability and official acts of tests.