The regularities of the thermodynamic compatibility of various industrially produced polyolefins and heterochain polymers and the possibility of obtaining composite materials based on their mixtures with significantly increased performance properties based on existing production facilities and process equipment have been identified.
Щоб покращити властивості епоксидних смол їх модифікують різними сполуками, зокрема олігоестерами. Композиції на основі епоксидної смоли ЕД-20 і ненасичених олігоестерів структуруються в присутності поліетиленполіаміну (ПЕПА). Олігоестер виконує роль пластифікатора, що хімічно не зв’язаний з молекулами просторово-зшитої структури. Це приводить до того, що в процесі експлуатації плівок на основі епоксиолігоестерних композицій спостерігається погіршення їх фізико-механічних і хімічних властивостей.
Досліджено зовнішні просторово-композиційні властивості будівель залізничних вокзалів різного часу на території історичних Галичини і Тиролю. Виявляються спільні ознаки і тенденції їхнього формування під впливом ідеологічних та політичних чинників.
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.
This research is focused on art-stylistic, formative and technological peculiarities of the sculptural works of Lviv from the 19th to early 20 centuries. It analyzes the character of interaction of architecture and sculpture as a phenomenon of the synthesis of spatial arts.
Reveals the importance of management accounting in upravlinnni modern enterprise, its
functionality in managerial concepts. The article is devoted to the consideration of some
outstanding scientists approaches to the interpretation and purpose of “managerial reporting”
notion. The expediency of the proposed “intra-corporate managerial reporting” term using is
grounded, in order to reflect the objective of its further using with a view to put into practice
the carried information and meaning. The classification of managerial reporting presented by
Prospects of recycling of waste products of fibrous materials (cotton, viscose, kapron) for obtaining of elastic composite materials are shown by creation of fibre-latex composition with subsequent coagulation and vulcanization of the filled rubber. The optimum contents of the fibre and its length is determined.
A novel procedure is developed for the quantitative determination of volatile compounds in the vapour phase over samples. Substances were extracted and preconcentrated from the headspace on porous polymer adsorbents under the conditions of thermodynamic equilibrium, followed by back extraction from the adsorbent using organic solvents. The final monitoring was performed by capillary gas chromatography with an internal standard.