Abstract
The aim of this research is the fabrication of new types, environmentally safe, highly efficient and inexpensive fire-protective coatings by the use of high-dispersed composite powders (with high inhibitory properties) of local mineral raw materials, which in fire-protective coatings will play the role as binders as well as efficient inert flame retardants. Fire-protective coating was prepared only by mechanical mixing of binders and fillers, does not require addition of expensive phosphorus and halogen-containing flame retardants. On the one hand it simplifies technological process of production of materials and on the other hand decreases price cost of fire-protective coatings. Polyurethane resins were selected as binders, popularity of which is due to low price and simple technological process of production, high performance properties and low combustion capacity (in comparison with binders, used in series). High-dispersed composite powders of local mineral raw materials: zeolites, perlites, dolomites and clay shales are used as fillers, which are characterized by high inhibition properties and fire-extinguishing ability. Thus, produced coatings will be environmentally safe and much cheaper compared to imported analogues. Due to their performance properties and fire resistance, they will fully meet the requirements set by the normative documentation for building materials. The performance properties of the obtained fire–protective coatings were determined by laboratory standard methods. Thermogravimetric analysis method allows us to study the thermal stability of the material and determine the relative combustion capacity of the material. The effectiveness of the obtained coating was evaluated by the determine the relative combustion capacity - Oxygen Index (OI) and by of studying combustibility of materials. In the course of studying combustibility of materials in an initial stage was established combustible group by the method of "fire tube”- ГОСТ 1708-71.
Highlights
Protection of building materials and constructions against fire is a major problem
One of the most important problems to increase fire safety building materials and constructions is the use of environmentally safe, non-toxic flame retardants for production of fire-protective materials
On the basis of above-mentioned problems, we propose the ways of elaboration of new types, environmentally safe, highly efficient and inexpensive fire-protective coatings by the use of high-dispersed composite powders of mineral raw materials, which in protective coatings will play the role of binders as well as efficient inert flame retardants
Summary
Gurchumelia Lali Chemist, PhD, Senior Researcher, Laboratory of Theoretical Research, TSU Rafael Agladze Institute of Inorganic Chemistry and Electrochemistry, Georgia. Tsarakhov Murman Chemist, PhD, Senior Researcher, N. Landia Laboratory of Thermochemistry, TSU Rafael Agladze Institute of Inorganic Chemistry and Electrochemistry, Georgia. Dzanashvili Dali Chemist, PhD, Senior Researcher Laboratory of Physical-chemical Analysis, TSU Rafael Agladze Institute of Inorganic Chemistry and Electrochemistry, Georgia. Bezhanov Feliks PhD in Engineering, Specialist, Laboratory of Rock, Construction Material Properties and Quality Control, G.Tsulukidze Mining Institute, Georgia. Chudakova Olga MSc in Economic Geography, Coordinator of Sccientific Projects, Department of Scientific Programs, G.Tsulukidze Mining Institute, Georgia. PRODUCING OF NEW TYPES, FIRE-PROTECTIVE COATINGS BY THE USE OF HIGH DISPERSED COMPOSITE POWDERS OF LOCAL MINERAL RAW MATERIALS
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