Abstracts

№1, 2012

Polyurethane Elastomers Based on Oligobutadienediol of 1,2 Double Bonds – Medvedev V.P., Ukrainskaya S.I., Chapurkin V.V., Murzin A.V. (P. 2)

Possibility of curing of the new oligobutadienediol is studied. The effect of ratio between isocyanate and hydroxyl groups and the amount of glycerin on mechanical properties, the degree of cross-linking, the vulcanizing network structure and the ratio between numbers of chemical and physical networks junctions of oligourethane is shown.

Key words: Oligodiendiols, oligodienurethanes, elastomer coatings, oligomers curing

Mechanical Activation of SKN­26 – Galimova E.M., Dorozhkin V.P, Sofronova O.V. (P. 5)

Processing and mechanical properties, glass transition and structure of butadiene acrylonitrile rubber SKN-26 after mechanical activation have been studied. There is nearly no effect of mechanical activation on molecular mass characteristics. Some trend in increase of glass transition temperature, strength properties and hardness of vulcanizates and changes of microstructure is shown.

Key words: butadiene acrylonitrile rubber, mechanical activation, microstructure, IR, DSC, Glass transition, mechanical properties

The Choice of the Method of the Modification of Elastomer Composition Based on Butadiene Acrylonitrile Rubber to Decrease the Friction Coeffici­ent – Pyatov I.S., Vrublevskaya Yu.I., Sheverdyaev O.N., Maksimova Yu.A., Bychkova T.V., Danilov V.D. (P. 8)

Effect of volume, adsorptive-absorption and combined treatments on friction and other properties of BNK (BNKS type) has been studied. The improvement of friction characteristics under combined treatment is shown.

Key words: volume modification, adsorptive-absorption modification, friction coefficient, friction characteristics

Grinding of Ethylene­Propylene­Diene Rubbers by Means of the Method of High­Temperature Shear Deformation – Solomatin D.V., Kuznetsova O.P., Prut E.V. (P. 11)

Grinding of EPDM vulcanized rubbers by means of the method of high-temperature shear deformation has been studied. Monodispersed rubber powders with the predominant fraction of particles of 0.315-0.63 mm in size were prepared. Grinding results in the formation of particles consisted of the core of high-density cross-linking, surrounded by a layer of low-density cross-linking gel fraction and the density of cross-linking of this gel fraction is lower than that of initial vulcanized rubber.

Key words: EPDM, grinding, rubber powder, cross-linking density, strength, elongation at break

Phase State of the Calcium Stearate in the Butadiene Acrylonitrile Rubbers (BNKS type) – Sokolova L.V., Matukhina E.V. (P. 14)

Calcium stearate itself and in butadiene acrylonitrile rubbers (BNKS type) have been studied by means of X-Ray diffraction under large and small angles as well as DSC. Conclusion about formation of liquid crystals of two types of calcium stearate in BNKS is presented. Annealing of BNKS results in decrease of phase transition temperatures of calcium stearate.

Key words: calcium stearate, BNKS, X-Ray diffraction, DSC, liquid crystals, phase transitions

Elastomeric Compositions Containing Carbon Nanomaterial – Vishnevskii K.V., Shashok Z.S., Prokopchuk N.R. (P. 18)

Effect of structure of carbon nanomaterial on the properties of elastomeric compositions based on isoprene (SKI-3), styrene-butadiene

(SKMS-30 FRKM-15) and butadiene acrylonitrile rubbers (BNKS-18, BNKS-40) rubbers has been studied. Parts of nanomaterial of different structure were obtained by ultrasonic treatment. The changes of viscosity, vulcanization characteristics and strength properties as well as the changes of the effect of aging are shown.

Key words: carbon nanomaterial, SKI-3, BSK, BNK, processing properties, strength properties, heat aging.

Organoclay as a Filler for Ethylene­Propylene Rubber – Nurmukhametova A.N., Zenitova L.A. (P. 22)

Effect of addition of organoclay (montmorillonits Cloisite 10 A, Cloisite 15 A, Cloisite 30 B) treated by surfactant on the properties of rubbers for sealant based on ethylene-propylene rubber (in particular for sealant) has been studied. Some changes of viscosity, vulcanization characteristics and strength properties (especially tear) as well as the changes of the effect of aging are shown.

Key words: montmorillonits, SKEPT, processing properties, strength properties, tear, heat aging, rubbers for sealant

Optimization of the Conditions of Preparation of Blocked Polyisocyanate BKPIС­DBSP – Puchkov A.F., Spiridonova M.P., Kablov V.F ., Kozlova O.V. (P. 25)

Effect of temperature of preparation of blocked polyisocyanate BKPIС-DBSP on its properties as well as processing properties and rubber-to-cord strength of tire rubber compounds has been studied. The best complex of properties is shown at temperature 90 °С.

Key words: blocked polyisocyanate, DTA, tire rubbers, rubber-to-cord strength, processing properties

Formulation of Rubber Compounds Based on Butadiene Acrylonitrile Rubber with the Use Of Complex Fire Retardants – Ushmarin N.F., Petrova N.N., Sandalov S.I., Petrova N.P., Koltsov N.I. (P. 28)

The possibility is shown to use the thrichloroethylphosphate and aluminum oxyhydroxide (Skar-Let -315) together with the other fire retardants for increase the fire resistance of rubber compounds based on BNK.

Key words: fire retardants, fire resistance, BNK, thrichloroethylphosphate, aluminum oxyhydroxide

Some Views on Mechanism of Activator Effects. Part 1 – Shershnev V. A. (P. 31)

Review of papers devoted to the role of activators of sulfur vulcanization in view of their ability to adsorption and chemisorptions of vulcanizing agents.

Key word: disulfide vulcanization of rubbers, metal oxides, activators, adsorption, chemisorptions.

Conference by Company LANXESS «Rubber Day – Germany» – Bukhina M.F. (P. 37)

Review of papers and information about Conference by Company LANXESS devoted to progress and trends in production and properties of Synthetic Rubber. (Düsseldorf, Germany, 21.09.11)

Key words: synthetic rubbers, bio-sources, chemicals, tires, rubber technical articles, mobility

Finnish Sky­Track – Ryazanov V.A. (P. 39)

Review of papers and information about Conference «Rubbers, tires and RTI 2011», organized by company Creon (Moscow, Hotel Balchug Kempinski, 22.11.11).

Key words: rubber, tire, rubber composition, prospects of science and industry

Rubber Technical Articles in Automotive Applications – Magg G. (P. 43)

Information about products by Company LANXESS used in rubber compounds for rubber technical articles of high quality for automotive applications.

Key words: synthetic rubbers, chemicals, rubber technical articles

Company «HF Group» – More than 155 Years Always One Step Ahead – Vladiko I. (P. 44)

Information about processing equipment, namely extrusion one, for rubber and tire industry, developed and produced by company «HF Group».

Key words: processing equipment, extruders