Abstracts

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3, 2010

Kinetic Parametres of Lithium Polybutadiene Polymerization and its Molecular Characteristics The Influence of Toluene and Hexene-1 Concentration Akhmetov I.G, Boreyko N.P., Bourganov R.T., Gluchovskoy V.S., Kalashnikova O.A., Kozlov V.G . (P. 2).

Kinetic parameters of butadiene polymerization and molecular characteristics of a polymer synthesized using n-butyllithium (Lapramolat M-3) based initiator system at various content of chain transfer agents i.e. toluene and hexane-1 added into reaction medium, were defined. It is shown, that toluene and hexene-1 concentration impacts significantly the level of an average molecular weight and polybutadiene polydispersity, but practically has no effect on polymerizing rate. It was found out, that toluene is a better chain transfer agent than hexene-1.

Key words: Polybutadiene, polymerization, molecular characteristics, lithium catalyst system

Butadine Polymerization in the Presence of Modified Neodimium Based Catalyst Sistem: The Influence of Chlorinating Agent Akhmetov I.G., Akhmetova D.R., Salakhov I.I., Sakhabutdinov A.G. , Kozlov V.G. .(P. 4)

The influence of chlorinating agent contained in neodymium versatate diisobutylalumi-numhydride hexachloride-p-xylene methylaluminoxane catalyst system on kinetic parameters of butadiene polymerization has been studied. The molecular characteristics and microstructure of a synthesized butadiene sample were determined.

Key words: Polybutadiene, polymerization, molecular characteristics, neodimium catalyst system

Behavior of Butadiene Acrylonitrile Rubbers in the Course of Polymerization of High Impact Polystyrene Lifanov A.D., Arkhireev V.P., Aninova G.A., Ismagilova A.I. .(P. 7).

Formation of homopolymers, graft copolymers, and the gel fraction under graft polymerization of styrene on butadiene acrylonitrile rubbers in the course of obtaining of high impact polystyrene has been studied

Key words: butadiene acrylonitrile rubbers, graft copolymerization, high impact polystyrene

Structure and Properties of Blends of Polyethylene and Ethylenepropylenediene Rubber Stepanov A. V., Zaderenko T.V., Goncharuk G.P., Karpova S.G., Yulovskaya V.D., Serenko O.A. (P. 8).

Blends of polyethylene and ethyleneprophylenediene rubber are studied. It is shown that dynamic vulcanization of a blend leads to increase of a composition stress. On the basis of results of the thermomechanical analysis, an electronic paramagnetic resonance and differential scanning calorimetry the structural model of a blend is offered. Formation of areas of not complete division of components and nanosize agglomerates of rubber particles as well as its dividing by the thin polyethylene layers in the course of dynamic vulcanization are supposed.

Key words: TPR, dynamic vulcanization, ethylene propylene rubber

TPR, Modified by Morillonite Volfson S.I., Ohotina N.A., Nigmatullina A.I., Sabirov R.., Vlasov V.V., Trofimov L.V. (P. 11).

Physical, mechanical, thermal, and service properties of oil-resistant TPR based on butadiene acrylonitrile rubber and polypropylene, obtained by dynamic vulcanization and filled by modified montmorillonite clay, were analyzed. It was shown that the best results were achieved by addition a small amount of montmorillonite clay to the rubber.

Key words: TPR, dynamic vulcanization, butadiene acrylonitrile rubber, polypropylene, montmorillonite clay

Study of Crystallization Ability of Hydrogenated Butadiene Acrylonitrile Elastomers Akopyan L.A., Kurljand S.K., Falyosa V.Y. (P. 14).

By means of light microscopy, relaxation and dynamic mechanical spectrometry, true strength as well as other physical and mechanical measurements the ability of hydrogenated butadiene acrylonitrile elastomers to microcrystallization has been established.

Key words: hydrogenated butadiene acrylonitrile rubber (HNR), dynamic and other mechanical properties, microcrystallization

Specific Features of Vulcanization of Butadiene Acrylonitrile Rubber in Presence of Dinitroso-Generating Systems Makarov T.V., Muflikhanov I.I., Volfson S.I. (P. 17).

The possibility of the use of different dinitroso-generating systems for vulcanization of butadiene acrylonitrile rubbers is shown. The best results have been obtained for rubber BNKS-40 vulcanized by one of quinol ester.

Key words: vulcanization, butadiene acrylonitrile rubber, dinitroso-generating systems

Effect of Shungite on the Structure and Properties of Covulcanized Blends of Butadiene Acrylonitrile and Ethylene-Propylene-Diene Elastomers Livanova N.M., Shershnev V.A., Dudnik M.V., Popov A.A. (P. 19).

Structure, mechanical properties, ozone resistance and swelling in toluene of blends of butadiene-acrylonitrile and ethylene-propylene-diene (EPDM) rubbers covulcanized in presence of zinc oxide and shungite as activators of vulcanization were studied. The influence of shungite, acrylonitrile groups content and modification of EPDM has been shown.

Key words: butadiene-acrylonitrile rubber, EPDM, covulcanization, compatibility, shungite, mechanical properties, ozone resistance, swelling

Effect of Specific Features of the Structural Parameters of Furnace Carbon Black on electrical Characteristics of Elastomers Estrin R.I., Ovsyannikov N.Ya., Kornev A.E., Kovaleva L.A. (P. 24).

Model of of filled elastomer based on specific number of contacts between filler aggregates (v) and the method of v calculation are proposed. v is supposed to include the main structural parameters of carbon black: dispersity, structure and content. The uses of model open the possibility to predict the electrical properties of elastomers filled with different carbon blacks. Calculated data coincide with experimental for filled NR.

Key words: filled elastomers, electrical properties, carbon black, dispersity, structure

Effect of Specific Features of the Structure of Oxipropiated Aromatic Amines on Processing Properties of Rubber Compounds. Part I Dorofeeva Yu.N., Ztmskii D.N., Kurljand S.K.,Mokhnatkina E.G. (P. 27).

Effect of specific features of the structure of oxipropiated aromatic amines on processing properties of tire rubber compounds has been studied. The same high level of processing properties as for compounds of standard stabilizers and increase of tackiness are shown.

Key words: tire rubber compounds, stabilizers, antioxidants

Alumosilicate Micro Spheres as Regulators of Porosity of Elastomers Sirotinkin N. V., Davudov M.G., Omelchuk U.V. (P. 30).

Effect of alumosilicate micro spheres on properties of materials based on chloroprene latex has been studied. The possibility to predict the density, the porosity as well as strength and durability of such materials is shown.

Key words: micro spheres, latex, porosity

The Use of Novantox 8 PFDA as an Antiager in Production of Rubber Technical Articles Sandalov S.I., Ushmarin N.F., Koltsov N.I. (P. 32).

The possibility of the use of Novantox 8 PFDA instead of Naftam-2 or Acetonanil N as an antiager in production of rubber technical articles of different rubbers is shown.

Key words: antiagers, compounds for rubber technical articles

Modification of Ethylene Propylene Diene Terpolymer by Using Bifunctional Organosilane to Increase its Adhesive Properties Shastin D.A., Makarov T.V., Volfson S.I. (P. 36).

The possibility to increase adhesive properties of ethylene propylene diene terpolymer by its modification of bifunctional organo silane is shown

Key words: EPDM, silane, adhesion

Ozone Resistance. Transparence of the Test Data to Western Customers. Guidance to Producers Opening Up the Global Market of Rubber Technical Articles Shellkes G.A., Nonnenmacher K. (P. 38).

The modern testing ozone-chamber from Germany is introduced, meeting the tougher requirements of the global rubber-market to the ozone resistance of elastomers. The carried out tests should cover the rigorous prescriptions of the international standards that is the prerequisite for the new market-player.

Key words: ozone resistance, ozone-chamber

Polyurethanes of Cold Curing Based on Reactive Oligomers Novakov I.A., Morozov Yu.L., Nistratov A.V., Reznichenko S.V. (P. 39).

Review of papers devoted to cold curing of polyurethanes based on reactive oligomers.

Key words: polyurethanes, cold curing, reactive oligomers.

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