Kozar O. Development of scientific bases for creation shape stable footwear using mineral compositions.

Complex scientific and practical problems of creating special protective footwear thanks to the formation of shoe leather materials features for upper parts and adhesives using mineral compositions based on natural aluminosilicates have been solved in the thesis. The hypothesis about the possibility of making appropriate shape stable footwear of special purpose through the formation and correction of properties of shoe leather materials and adhesives at the stage of manufacturing has been confirmed theoretically and practically. The role of mineral fillers on the structure formation of the dermis and the performance, ergonomic, safety, relaxation and deformation properties of leather and cutting features for top of special purpose footwear has been found. The possibility of improving thermo- and fire resistance of leather materials, water resistance to static and dynamic conditions, improving heat, water and frost resistance of adhesive joints of shoe uppers details and soles has been proved. Technological parameters have been improved: mineral filling of semi-finished products using dispersions of zeolite and a mixture of zeolite and montmorillonite; forming uppers with the previous adjustments of deformation properties of leather; construction of shoe bottom using the modified zeolite polyurethane adhesive. The proposed technological solutions allow to reduce the cost of foreign production materials, to reduce the cost of materials through the use of environmentally-friendly national minerals, to increase efficiency in leather cutting, to reduce consumption of materials and energy of shaping processes what provides the possibility to create shape stable footwear with improved protective properties.