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RESEARCH OF SURFACE PROPERTIES OF FABRICS FOR MANUFACTURE OF TENTS

The operation of easily erected structures made of flammable textiles encourages the use of fire protection, as the operation may ignite tarpaulin fabric, which is a flammable material. Therefore, studies aimed at determining the patterns of formation of an elastic layer of fire-retardant coating on fabrics with a composition based on mixtures of organic and inorganic substances, characterized by the necessary technological properties, are relevant. The paper presents the results of studies of free surface energy, as well as its components (polar and dispersed) for tarpaulin fabric and methods of its change when using a fire-retardant coating. A drop of coating was applied to the sample with a pipette during the test. After reaching the equilibrium drops, its height and diameter were determined with a microscope. The sequences of polarity change and their relationship with the main component of the fabric after the formation of the flame retardant coating, which are consistent with the structural and functional features of the tarpaulin fabric. The resulting fabric is characterized by a reduced property of water absorption, as the free surface energy changes 2.3 times and the polarity 2 times, which is associated with a decrease in the surface tension of the coating. Given the above, it was found that the polarity of the canvas fabric is close to the polarity of the flame retardant coating, which is difficult to wet the material. Instead, the addition of a foaming agent reduces the polarity of the coating and increases the wettability, which allows you to effectively process the canvas fabric. Thus, when applying a comprehensive approach to the study of wettability, polarity, interfacial tension, you can choose stable technologies for new products from fire-retardant fabric and expand their scope.