4, 60 NEWS

PROCESSING OF POLYMERS AND COMPOSITES
10 DENSURF DA 4010 is your right choice for carbon black grinding — Denisova O. V., Aylin Aydemir, Hüseyin Eren
24 Restore lost positions. Part 4. Three in one: coalescer, elastifier for polyvinyl acetate dispersion, reinforce of products from it — Candidate of Tech. Sci. Voitovich V. A., Candidate of Tech. Sci., Khryapchenkova I. N.
Abstract. The article provides information that ethyl silicate-32 performs in polyvinyl acetate dispersion the function of a coalescent during film formation, an elasticizer during the operation of products, as well as a substance that increases strength.
Keywords: coalescence, polyvinyl acetate dispersion, ethyl silicate-32, elastification, strengthing.

45 Typical aspects of formulating solvent based coatings for general industrial use — Candidate of Tech. Sci., Fedyakova N. V., Bokrenev Yu. A., Pavlov A. V., Zelenskaya A. D.
Abstract. The paper considers the basic rules for formulating solvent based coatings for general industrial purposes. The classification of recipes is given. Using the combined method, the formulation of uralkid enamel of the business category was calculated. A computer program for calculating the formulations of solvent based coatings for general industrial purposes has been developed.
Keywords: recipe building identifiers, recipe cycle, degree of pigmentation, filling constant, program for calculating formulations of coatings.

DISCUSSION CLUB
15 Compete on equal terms

CHEMICAL TECHNOLOGIES
20 Polyaspartic resins and their coating applications — Dr. Cemil Dizman, M.Sc. Semiha Eral
29 Adsorption of oligomers with various functional groups from solutions in xylene on titanium dioxide samples used in the domestic coatings industry — Candidate of Chem. Sci. Konichev M. A., Candidate of Chem. Sci. Aristov B. G., Candidate of Chem. Sci. Smrchek V. A., Candidate of Chem. Sci. Kienskaya K. I., Doctor of Chem. Sci. Perevalov V. P.
Abstract. The adsorption of special additives containing different functional groups: acidic, alkaline and quaternary ammonium — from solutions in xylene was studied on samples of titanium dioxide used in the domestic coatings industry. The areas occupied by additive molecules in a dense monolayer on the TiO2 surface are calculated. It is shown that the maximum values of adsorption are observed in the case of an additive having a basic character, and the minimum values in the case of a quaternary amine. The largest value of the main additive is explained by the presence of modifiers in TiO2 samples — oxides of amphoteric metals (Al2O3, SiO2, ZrO2) capable of showing acid-base properties. In this case, simultaneously with the physical adsorption of the solute, chemoadsorption takes place due to strong Lewis acid centers. The smaller value of the acidic additive indicates both weak chemisorption due to weaker main centers, and a weakening of physical adsorption due to the displacement of the additive from the surface of TiO2 by solvent molecules. In the case of quaternary amine, chemisorption is absent and only physical adsorption is observed, weakened by competing solvent adsorption, the value of which is almost the same for all TiO2 samples. The largest amount of adsorption of basic and acidic additives is observed in the case of TiO2 samples obtained by the chloride method. In relation to the main additive, TiO2 samples of the following brands show the greatest activity: R-706, R-966, R-280, R-902, BLR-699.
Keywords: functional group, titanium dioxide, adsorption, monolayer, acidic additive, alkaline additive, aluminum, silicon, zirconium oxides, aluminosilicates, acid-base properties, Lewis and Brensted acid centers, chemisorption.

STANDARDIZATION AND METROLOGY
37 UL-263 standard. Safety standard for testing building structures and materials for fire resistance. Part 9 — Doctor of Tech. Sci. Drinberg A. S., Candidate of Military Sci. Savelyev D. V., Candidate of Chem. Sci. Pavlovich A. V., Mamonov A. I.
Abstract. The American standard UL-263 for testing building structures and materials for fire resistance is considered. The temperature-time curves of various fire regimes are shown. Special equipment that allows you to test materials under preload was studied. The parameters for which this method is tested are shown. Additional tests of fire-resistant materials with subsequent exposure to a water jet of a fire nozzle are described.
Keywords: temperature regimes of fires, intumescent materials, test furnace, deformation load, water jet impact.

57 YOUR NAVIGATOR