Abstracts

№6, 2010

Modification of Isoprene Rubber by Monoesters of Maleic Acid – Vasil’ev V.A., Khvostik G.M., Smirnov V.P., Morosov Iu.V., Nasyrov I.Sh., Bazhenov Iu.P. (P. 2).

Modification of isoprene rubber by monoesters of maleic acid and properties of modified rubber have been studied. Comparison with NR shows the best strength properties of both unvulcanized and vulcanized rubber as well as tear resistance of vulcanized rubber. Molecular and rheometric characteristics are of the same level.

Key words: isoprene rubber, modification, monoesters of maleic acid, strength properties

Improvement of Structure and Properties of Fluorine-Containing Rubber SKF-26 – Zuev A.V., Kochetkova G.V., Ostrovskaya T.P., Taganova V.A., Pitchkhidze S.Y., Yurovskiy V.S. (P. 6).

Structure and properties of fluorine-containing rubbers SKF-26 and two its experimental analogues SKF-26/8 and SKF-26/10 have been studied. Measurement of tg at different frequencies was in use to evaluate branching of rubbers, MMR studied by means of gel-permitted chromatography. Mechanical and processing properties of technical rubber for rubber/metal seals were also studied. Lower MM and viscosity, minimal branching and maximal Mw /Mn as well as best processing properties were shown for SKF-26/8.

Key words: fluorine-containing rubbers, MMR, branching, mechanical and processing properties, rubber for rubber/metal seals

Properties of Compositions of Rubber SKI-3 and Chlorine-containing BR – Andriasyan Yu.О., Mikhailov I.А., Dvoryashna Т.N., Karpova S.G, Popov А.А, Moskalev Yu.G. (P. 10).

Co-vulcanization of SKI-3 with chlorinated BR and properties of obtained compositions, including gas-permeability, have been studied. Properties of both row and vulcanized rubber compounds are practically independent on the way of obtaining the chlorine-containing BR.

Key words: SKI-3, chlorine-containing BR, co-vulcanization, gas-permeability

The Causes of Differences in Ozone Protection Properties of Chlorine Containing Ethylene-Propylene Rubbers Co-Vulcanized with BNR – Livanova N.M., Andriasyan Yu. O., Mikhailov I. A. (P. 12).

Some causes of difference in amount of bound chlorine and unsaturated bonds in ethylene-propylene elastomers and its ozone protection in blends with BNR are under consideration.

Key words: chlorine containing ethylene-propylene rubbers, BNR, co-vulcanization, ozone protection

Boron-Containing Composite Stabilizer PRS-1B – Puchkov A.F., Spiridonova M.P., Kablov V.F ., Lapin S.V. (P. 14).

Composite stabilizer for protection of rubbers under moisture conditions is offered. Cause of its high activity is under consideration.

Key words: stabilizer, moisture conditions of service

Processing ways to increase structural activity of zeolit in polymer/elastomer blends – Sokolova M.D., Davydova M.L., Shadrinov N.V. (P. 16).

Properties of rubber compounds based on blends of BNR with ultrahigh molecular polyethylene containing zeolit were studied. Mechanical activation results in increase of activity of zeolit.

Key words: zeolit, mechanical activation, PE/BNR blends

Coagulation of Carbon Black Aerosol in a Turbulent Stream – Dmitriev K.I., Shopin V.M. (P. 20).

Process of coagulation of an aerosol of carbon black in a turbulent stream was studied. On the basis of experimental data it is drawn a conclusion on an intensification of process of coagulation of an aerosol with the growth of Dibutyl Phthalate absorption number – parameter characterizing structure of disperse carbon black. Process of amalgamation of aggregates of carbon black is studied at sedimentation of an aerosol on a gas-permeable obstacle.

Key words: disperse carbon black, aerosol, coagulation

Possibilities of the Method of Dynamic Indentation in Estimation of Schungite Filling Degree of Rubbers – Mosgalev V.V., Rudnitskii V.A., Shashok Zh.S., Kasperovich A.V. (P. 23).

Method of dynamic indentation was in use to estimate structure and filling degree by schungite of vulcanised rubbers based on crystallisable isoprene rubber SKI-3 and noncrystallisable styrene-butadiene rubber SKMS-30ARKM-15. Comparison with strength data as well as rubber/filler interaction is under discussion.

Key words: schungite, filling degree, method of dynamic indentation

Surface Modification of Glass Microballs by Polyurethanes – Sirotinkin N. V., Bestuzheva V.V., Bondareva E.A., Davudov M.G. (P. 26).

Conditions for covering up of nano-sized polyurethane films on smooth surfaces of the glass microballs are presented, properties of nano-films and modified glass microballs are studied. The possibility of the use of modified glass microballs to create a new polymer construction materials are evaluated.

Key words: glass microballs, nano-sized polyurethane films, polymer construction materials

Chemistry and Technology of Industrial Synthesis of Halogenated Butyl Rubber. Part 1. Chlorinated Butyl Rubber – Zanaveskin L.N., Averianov V.A., Zanaveskin K.L., Stepanov P.A. (P. 31).

Review of papers devoted to chemistry and technology of industrial synthesis of chlorinated butyl rubber.

Key words: butyl rubber, chlorinated butyl rubber, chlorine, hydrogen chloride, chlorination, isomerization.

Study on the Production of Isoprene in the Single-Step Process from Tert-Butyl Alcohol and Formaldehyde in the Microwave Field over the New Catalysts – Yunusov D.Sh., Daminev R.R., Bikbulatov I.Kh., Karimov O.Kh. (P. 40).

Production of isoprene from isobutylene and formaldehyde in the microwave field over new catalysts is proposed. The best conditions in the use of different catalysts are determined.

Key words: isoprene, formaldehyde, isobutylene. single-step process, microwave field, acid catalysts.