Abstracts

№5, 2010

Polymerization of Butadine in the Presence of Modified Neodimium Based Catalyst Sistem: The influence of methylalumin-oxane – Akhmetov I.G., Akhmetova D.R. (P. 2).

Polymerization of butadiene over neodymium versatate – diisobutylaluminiumhydride – hexachloride-p-xylene – methylaluminoxane catalyst system at various concentration of methy-laluminoxane was studied. Kinetic parameters of this process as well as the microstructure and molecular characteristics of the synthesized polybutadiene were determined.

Key words: Polybutadiene, polymerization kinetics, molecular characteristics, neodymium catalyst system

The Main Features of the Influence of Curing System and the Molecular Weight of Oligobutadiendiols Krasol LBH on the Structure and Mechanical Properties of Polyurethane Elastomers – Novakov I.A., Nistratov A.V., Medvedev, V.P., Pylnov D.V., Agayeva V.B., Lymareva P.N., Gugina S.Yu. (P. 5).

Structure and different mechanical properties (hardness, strength, resilience, dynamic and other relaxation properties) of polyurethane elastomers have been studied. Effect of curing system and the molecular weight of oligobutadiendiols (Krasol LBH) is shown.

Key words: polyurethane; oligodiendiol; oligomer composition, structure, mechanical properties

Study of Possibility of Application of Karelite (Schungite) as Curing Agent in Rubber Based on Polychloroprene and Chlorosulfonated Polyethylene – Artamonova O.A., Durmish-Ogly L.I., Potapov E.E., Godunov B.A., Bobrov A.P., Sakharova E.V. (P. 10).

Vulcanization and properties of rubber compounds based on chlorosulfonated polyethylene, polychloroprene, and its blends with butadiene acrylonitrile rubber containing both modified and nonmodified Karelite have been studied. Possibility of partial and full replacement of traditional curing agents by Karelite as well as higher activity of modified Karelite is shown.

Key words: Karelite, schungite, polychloroprene, chloro-sulfonated polyethylene, vulcanization, zinc oxide, magnesium oxide, modification, urotropine, resorcin

High-temperature ageing of rubbers based on the ethylene-propylene rubber modified by particles of metals of variable valance – Novakov I.A., Kablov V.F., Petryuk I. P., Mikhailyuk A. E. (P. 13).

Ageing of peroxide vulcanized rubbers based on the ethylene-propylene rubber modified by particles of metals of variable valence have been studied. Effect of highly disperse nickel and copper particles on high-temperature ageing resistance and possibility to improve it are shown.

Key words: Ageing, ethylene-propylene rubber, particles of metals of variable valence, modification, nanocomposition

Stabilising Effect of Mesogenic Compounds in Processes of Ageing of Rubbers – Kuvchinova S.A., Fokin Dm.S., Vasil’ev D.M., Burmistrov V.A. (P. 15).

Four liquid crystalline compounds with chemical active terminal substitutes were synthesized. Their structural characterization was studied by the methods of an element analysis and 1H NMR. High light-thermostabilizing efficiency of mesogenic compounds in composition based on butadiene-styrene rubber was shown.

Key words: mesogenic compounds, butadiene-styrene rubber, structural characteristics, mechanical properties

Modifying of molded rubber articles based on butadiene acrylonitrile rubber in the liquid environment – Uss E.P., Kasperovich A.V., Shashok Zh.S., Pyatov I.S., Maksimova Y.A., Vrublevskaya Y.I. (P. 19).

New variant of surface-bulk modification of rubber sealants in polyethylene glycol of various molecular weight is offered. The improvement of tensile properties, heat-resistance and compression set is shown.

Key words: butadiene acrylonitrile rubber, sealant, modification, polyethylene glycol

Metallocene catalysts for synthesis of ethylene-propylene rubbers – Arutyunov I.A., Ivanis’ko O.L., Kostoglodov P.V., Maksimov D.A., Kochnev A.I., Kazakov Yu.M. (P. 22).

Review of papers devoted to synthesis of ethylene-propylene rubbers over metallocene catalysts

Key words: catalysis, metallocene catalysts, ethylene-propylene rubbers

The Use of Highly Disperse Metal Particles in Elastomeric Compositions – Petryuk I.P., Novakov I.A., Kablov V. F., Mikhailyuk A. E. (P. 27).

Review of papers devoted to the prospect of the use of highly disperse metal particles (in particular of metal of variable valence) in elastomeric compositions.

Key words: nanocomposites, metal particles, metal of variable valence, modification, filler.

Silica fillers for silicone rubbers. Review – Kopylov V.M., Kostyleva E.I., Kostylev I.M., Kovyazin A.V. (P. 32).

Review of papers devoted to synthesis of different silica fillers, their effect on properties of silicone rubbers and methods of obtaining of compounds with silica particles of nanodimension.

Key words: silica, nanosilica, silicone rubbers, nanocomposites