ДОСЛІДЖЕННЯ ЕКРАНУЮЧИХ ВЛАСТИВОСТЕЙ ТЕКСТИЛЬНИХ МАТЕРІАЛІВ ЩОДО ДІЇ УЛЬТРАФІОЛЕТОВОГО ВИПРОМІНЮВАННЯ

Abstract

Study the possibility of using textile materials for shielding against the negative effects of ultraviolet radiation. Methodology. Theoretical and experimental researchs are based on the basic principles of textile materials science. The UV shielding ability of textiles was assessed by the UV protection factor (UPF). The UV protection factor was evaluated on a UV-Vis spectrophotometer (Cary 50, Varian, Australia) in accordance with AS / NZ 4399: 1996 in the wavelength range 280-400 nm. According to AS / NZ 4399: 1996, textiles are classified according to the value of the UV protection factor (UPF) as those that provide "excellent UV protection", "very good UV protection", "good UV protection", "does not protect against UV radiation." Results. The main sources of UV radiation are analyzed and the features of the conditions of human exposure when working indoors and outside are considered. It has been established that the degree of human exposure depends on the intensity of UV radiation, and can be reduced by using protective equipment. Flexible textile screens can be one of the effective means of protection against UV radiation. The advantages of textile screens are the possibility of their modification and the ability to create shielding products of various shapes. The level of protective properties of textile screens depends on many factors, namely: the chemical nature of the polymer of textile materials, structural characteristics, modification by certain substances, color, moisture, etc. The results of the study of the coefficient of protection against ultraviolet radiation of textile materials, depending on their color are presented. Scientific novelty. It is proved that the optical properties are not only important for the evaluation of appearance of the textile and garment aesthetic perception, they can control the shielding properties of the textile to the action of UV radiation. It was found that dark saturated colors of textile fabrics, all other conditions being equal, provide shielding properties at the level of "very good protection" compared to light unsaturated colors (the UPF level varies from 10 to 35 with increasing color saturation). Practical value. The possibility of using textile materials for UV protection has been confirmed.