water absorption

This study investigates the effect of thermoactivation temperature on the pore characteristics of zeolites from the Sokyrnytsia deposit and local tuffaceous rock at 600, 800, and 1000°C, as well as on the sorption properties of the materials under water absorption conditions. A series of compositions for adsorbent production using ceramic processing techniques has been developed. The influence of firing temperature on the formation of the porous structure of the materials has been examined.

The sintering regularities of the developed majolica masses compositions on the basis of typicalmass MKL-1 and MK-4K with the addition of broken glass and ceramic bricks wereinvestigated. Theinfluence of these sintering processes additives of the studied mass compositions depending on theircontent and firing temperature is established. A new method of decorating ceramics at the stage of its plastic state was developed. The obtained results will be used to improve the technological processesof obtaining decorative and applied ceramics.

The influence of talc filler, its content, as well as an additional heat treatment and temperature on the regularities of polylactide materials water-absorption has been researched. Based on the obtained data, the water diffusion coefficient in polylactide materials and the activation energy of the diffusion process were determined. It was found that the process of water absorption by the filled and heat-treated materials based on polylactide proceeds slower and requires more activation energy of the process.

The influence of the filler - talc, its content, additional heat treatment and temperature on the physical-mechanical and thermophysical properties of polylactide materials, in particular on the surface hardness, heat resistance according to Vick and thermomechanical characteristics has been studied. The influence of filler and temperature on the resistance of polylactide materials to the action of the aqueous medium is revealed. The diffusion coefficient of water in polylactide materials and the activation energy of the diffusion process were determined.

The results of the study of water absorption, compressive strength and bending strength, wetting angle of ceramic and cement-sand materials, impregnated with the production of SDP “Kremniypolimer” and developed mixtures of water-soluble liquids are presented in the article. The main hydrophobic materials produced by ZDP “KremnoiPolimer” for obtaining waterproofing liquids are 136-157 M; ETS-32; AKOR-B100. On the basis of GKZH-11N and GKZH-11K experimental waterproofing fluids No. 1 K, No. 2 K, No. 1 H and No. 2 Н were developed.

The influence of the polymeric modifier – poly(vinyl chloride) on the chemical stability of polyester composites was investigated. From the results of the research, it is found that equilibrium water absorption for polyester composites is established within 7-14 days. Water absorption of unmodified polyester material is about 1,5%.

The current article is focused at the physical and technical properties of ceramic bricks. It was established that the decisive factors in the process of interaction of ceramic bricks with water, water solutions and water vapor is the composition of pore structure and energy state of its surface. It is substantiated and defined the component composition and technological regime of the protective coating formation on the surface of ceramic bricks. The technological properties of the initial composition and physico-mechanical properties of coatings based on them are established.

The article describes the effects of surface treatment of concrete protective coatings filled of polimetylfynilsyloksan based on its corrosion resistance. The influence of the coating on the adhesive strength, hydrophobicity and water absorption of concrete. The possibility of using the developed formulations of protective coatings to improve durability of concrete is showed, which is operated under conditions of external aggressive factors.

The thesis is devoted to the development of theoretical bases of the corrosion resistance of concrete by protective coatings on the base of polymethylphenylsiloxane filled with aluminum and zinc oxides. The technological properties of protective coatings compositions were investigated by methods of physical and chemical analysis, methods of the concrete surface coating and form conditions were shown. Determined that the forming matric-oxide structure covering in the process of hardening passpasses behind counting polymerization polymethylphenylsiloxane.