Abstracts

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4, 2011

Effect of Co-Catalyst at Polymerization of Isoprene Carried out over Neodymium-Based Catalyst System Akhmetov I.G., Vagizov A.M. (P. 2).

The process of isoprene polymerization carried out over methylaluminoxane-modified catalyst system NdCl33i-37͖l(i-49)3 at various co-catalyst content have been studied. Kinetic parameters of the process were calculated and molecular characteristics of the synthesized polyisoprene samples were defined.

Key words: polyisoprene, neodymium-based catalyst system, polymerization kinetics, molecular characteristics

Microstructure of Ethylene-Propylene-Diene Elastomers and their Thermal-Oxidative properties Osipova O.L., Galanin D.A., Molchanova O.A., Sofronova N.P., Boreyko N.P. (P. 4).

Microstructure of ethylene-propylene-diene rubbers has been studied by IR-spectroscopy, microscopy, and TGA. Connection between microstructure and thermal-oxidative resistance and other properties of elastomers is determined.

Key words: ethylene-propylene-diene elastomers, microstructure, IR-spectroscopy, microscopy, TGA, thermal-oxidative resistance

Special Features of Thermal-Oxidative Degradation of Ethylene-Propylene-Diene Copolymers Osipova O.L., Boreyko N.P., Kiyanenko G.V., Sokolova E.V., Molchanova O.A. (P. 8).

Thermal-oxidative degradation of ethylene-propylene-diene copolymers has been studied. Qualitative and quantitative composition of volatile matters of decomposition is determined. The suggestion about possible sources of a smell has been made.

Key words: ethylene-propylene-diene copolymers, thermal-oxidative degradation, volatile matters.

On the Cause of the Increasing of Stability of SKI-3 at the Decrease of Antioxidant Content Kavun S.M., Borisenko V.N., Sakhabutdinov A.G., Nasyrov I.Sh. (P. 11).

Effect of the different antioxidants content on the viscosity of rubber SKI-3 and aging of SKI-3 based standard and tire rubbers have been studied. Conclusion about the cause of the increasing of stability of SKI-3 at the decrease of antioxidant content is presented.

Key words: polyisoprene rubber SKI-3, antioxidants, aging

Effect of Polyethylene on Thermo-Mechanical Properties of Row Rubber Blends Based on Butyl and Ethylene-Propylene Rubber Markov V.V., Reznitchenko S.A., Vlasenko F.S., Kornev A.E., Kukushkin Yu.V. (P. 14).

Thermo-mechanical properties and green strength of row rubber based on butyl as well as ethylene-propylene rubber blended with polyethylene of different types have been studied. Connection between some features of thermo-mechanical curves and cohesive properties of blends determined and conclusions about effect of polyethylene on molecular mobility of rubber are presented.

Key words: butyl rubber, ethylene-propylene rubber, polyethylene of different types, polymer blends, thermo-mechanical curves, cohesive properties, molecular mobility

Study of Effect of Schungite on Properties of Rubber Compounds Based on Chlorobutil Rubber Artamonova O.A., Trostin A.V., Sakharova E.V., Potapov E.E., Bobrov A.P., Trukhlyaeva I.V. (P. 17).

The possibility of introduction of schungite in rubber compounds based on chlorobutil rubber of medical use, as well as of inner liner of tires is shown. This allows the complete exclusion of lithopone, chalk, MgO, ZnO and reduce the content of carbon black and accelerator of sulfur vulcanization.

Key words: schungite, chlorobutil rubber, medical rubber compounds, tire rubber compounds, vulcanization.

Production and Study of Properties of Elastomers Modified by Ultradispersed (Nano) Particles Ershov D.V., Redkin V.E., Ivanenko A.A., Naumenko L.S., Lapkovskaya E.Y., Tkathev A.G. (P. 19).

Effect of introduction of ultradispersed (of nanoparticles) diamond and carbon containing materials in rubber compound based on SBR have been studied. Process of introduction based on ultra-sonic modification of nano-particles is developed. Efficiency of the presence of small amount of studied nano-particles is shown.

Key words: nanoparticles, reinforcement, fillers, diamond and carbon containing materials modification, SBR, carbon black.

2,2-Bis(vinyl)benzimidazole in Elastomer Composition Based on SBR Tuzhikov O.O., Tuzhikov O.I., Khokhlova T.V., Lukasik V.A., Orlova S.A., Zheltobryukhov V.F. (P. 23).

2,2-bisvinylbenzimidazole (2,2BVBA) has been synthesized by interaction between phenylenediamine and maleic anhydride in the presence of phosphoric acid. Effect 2,2BVBA on mechanical and other properties of standard composition based on SBR is studied. Increase of strength and dynamic modulus as well as heat resistance and vulcanization rate in presence of low amount of 2,2BVBA is shown.

Key words: SBR, 2,2-bisvinylbenzimidazole, synthesis, vulcanization, mechanical properties, heat resistance,

Method of Evaluation of Rubber Friction on Wet Surface Vlasov V.V., Solovyev M. E. (P. 26).

A new method of measurement of wear resistance and friction coefficient of rubber on both dry and wet surface is suggested. Effect of surface conditions (dry, wet and in water), load, and rubber composition is studied.

Key words: friction coefficient, wear resistance, dry, wet and in water surface, rubber composition

System of Control over Vulcanizing Characteristics of Rubber Compound Klimov A.Y., Sochnev A.N., Sadchikova G.M., Biryukov V.P. (P. 27).

System of control over vulcanizing characteristics of rubber compound based on mathematical model is presented. Possibility to reduce the effect of the deviation of characteristics of initial ingredients on characteristics vulcanization process and rubber compound, as well as increase the stability of mechanical properties of rubber goods is shown.

Key words: control of quality, mathematical model, vulcanization, vulcanizing agents, vulcanizing characteristics, technical rubber goods

Properties of Rubber Powder Recycled under High Temperature Shear Deformation Kuznetsova O.P., Bulygina Yu.V., Tichonov A.P., Prut E.V. (P. 30).

The particle size distribution and specific surface of rubber powder grinded of rubber tire under high temperature shear deformation were studied. The sol-fraction content extracted by acetone and toluene and gel-fraction crosslink density as a function of particle size was determined. The effect of modification of rubber powder by bitumen was investigated.

Key words: rubber powder, tire, bitumen, grinding, particle size, dispersity, specific surface, sol, gel, crosslink density

Study of the Process of the Rolling of Reinforced Reclaimed Tire Veschev A.A., Balandin V.S. (P. 33).

Deformation behavior of reinforced rubber of reclaimed tire under one-dimension compression is studied and corresponding equation is suggested. Experimental procedure of determination of characteristics of process of the rolling of reinforced reclaimed tire (for separation of the metal from rubber) is developed.

Key words: reclaimed tire, rolling

Silica for Tire Rubbers: Last Trends and Prospects Kandyrin K.L. (P. 37).

Review of papers devoted to different types of silica, their properties and use in tire rubbers.

Key words: silica, tire rubbers

Elastomer Nanocomposites Morozov Yu.L., Reznichenko S.V. (P. 42).

Review of papers devoted to elastomer nanocomposites; comparison of properties of old and new ones.

Key words: nanocomposites

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