Abstracts

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2, 2005

Some Investigations of Rubber Nanocomposites Jurkowski B., Jurkowska B. (P. 2).

Properties of compounds based on NR containing nanofillers (Montmorillonite and fullerene-containing carbon black) as well as compounds based on blends of NR with butadiene rubber containing special organo-element Lubricant K 95 have been studied by complex of different methods. The change some of the studied properties.in presence of small amount of all these components is shown.

Comparative Study on the Use of Reclaim and Fine Powder in Different Tyre Tread Compounds Hendriks A.P.M., Martinez Antonio M.E. (P. 6).

Results on comparative study on the use of reclaim and fine powder obtained from worn-out tyres are presented. Properties of tread compounds with the powder of particle dimensions less than 0,250 mm are the same or even better than properties of compounds with reclaim.

Effect of Treatment of Skim Natural Rubber Latex on Properties of Pressure-Sensitive Adhesive Tapes Sakdapipanich I., Nawamawat K. (P. 9).

The possibility of the use the skim natural rubber latex to produce the pressure-sensitive adhesive tapes is shown. The treatment of latex by NaOH at 70 O for 3 hours results in removal of nonrubber components and improvement of the adhesion properties.

Enzymatic Purification of Natural Rubber Latex Sawatklang S., Siwarungson N., Kokanutaporn S. (P. 12 ).

Purification of natural rubber latex by means of enzymes results in decrease of content of nonrubber components. Fourier transform infrared spectroscopy (FTIR) technique was used to confirm the quality of purified natural rubber. Properties of latex films of medical glove formula obtained with treated and untreated latex are compared.

Multiaxial Anisotropic Stress-softening Constitutive Equation Shariff M.H.B.M. (P. 16).

Model of tress-softening in rubberlike materials (Mullins effect) have been proposed. Several experimental data by different authors exhibiting anisotropic behavior under different types of deformation are compared with obtained theoretical results.

Life Time Prediction of Rubber Products for Automobile Parts Kim J.K., Jung J.H., Yang K.-M. (P. 19).

A new modified Arrhenius equation was derived using the temperature and stress as major parameters in predicting the life time of the rubber articles. The results are compared to results of model and field tests of articles. The morphological analysis of the articles after field test are fulfilled by means of electron microscopy.

Gradient Elastic Polymer Materials of Continuous and Smooth Transition from Plastic to Rubber Askadskii A.A., Luchkina L.V., Goleneva L.M. (P. 21).

Methods of block polymerization and hot moulding were in use to obtain polyurethane materials of continuous changes of modulus from values specific to glass to values specific to rubberlike polymers. Chemical processes involved are under consideration.

The Use of Hydrogenated Elastomers in Blend and Dynamic Thermoplastic Elastomers Zemskii D.N., Ivanov V.P., Kazakov Yu.M., Volfson S.I., Dorozhkin V.P. (P. 27).

The improvement of properties of blend and dynamic thermoplastic elastomers as a result of the addition of small amount of hydrogenated isoprene or butadiene rubbers for increase of miscibility of components is shown. Increase of crystallinity of Polypropylene in presence of hydrogenated rubbers is considered as the evidence of participation of rubber in this process.

Vulcanization of Rubber Compounds Based on Styrene-Butadiene Rubber SKMS-30 ARKM-15 under Action of Ceramic IR Sources Nazarov E.S., Yusupbekov A.Kh. (P. 29).

New ceramic composition of compounds for IR sources is offered. Power of IR radiation is shown to be determining factor in properties of vulcanized rubbers. Optimum conditions of vulcanization of thin-walled rubbers under action of IR sources are established

New Geometrical Characteristics of Carbon Black Tutorskii I.A., Roldugin V.I., Zatevalov A.M., Vishnyakov I.I. (P. 30).

The method of fractal dimension determination of carbon black aggregates and agglomerates is described. Method is based on the measurement of oil capacity by absorption of DBF on absorptometer Brabender after compression under different pressures. The displacement of plunger is measured; it characterized the free volume decrease at fixed pressure. The method of calculation of fractal dimension using this data is presented.

Effect of Small Addition of Fiber Fillers on Properties of Styrene-Butadiene Raw Rubber and Vulcanizates Akatova I.N., Nikulin S.S., Sedykh V.A. (P. 32).

Effect of small addition of Capron and Viscose fibrous at the stage of formation-and-finishing of rubber from latex on processing and mechanical properties of styrene-butadiene rubber and vulcanizates have been studied. Results of swelling show the presence of interaction of rubber with acidified surface of Capron and absence of interaction with Viscose.

Purification of Sewage at Production of Rubber Latex Goods Berestnev V.A., Trofimovich D.P., Lopatin V.V. (P. 35).

The data about pollution of sewage on different technological stages of latex goods production and list of main polluting substances are presented. The method of sewage purification is recommended as well as technological scheme and the list of equipment and reagents used.

Rubber to Metal Cord Bonding with the Use of Compounds of Metal of Variable Valence Bobrov Yu.A., Kandyrin K.L., Shmurak I,L., Potapov E.E. (P. 37).

Review of data concerning rubber to metal cord bonding. Improving of adhesion with the use of cobalt and some other substances is under consideration as well as assortment of these substances.

XV Annuary Conference on Combustibility Current Advances in the Field of Retardation of Combustion of Polymer Material Zaikov G.E., Madyuskina L.L., Artsis M.I. (P. 45).

Review of papers presented on XV annual Conference on combustibility (69 June 2004, Stamford, Connecticut, USA) devoted to retardation of combustion of polymer material.

The Prospect for the Use of Hydrogenated Butadiene Acrylonitrile Rubbers in Production of Thermo Resistant Stators of Screw Drilling Engine and Screw Pumps Korotkikh N.I., Klochkov V.I., Krasovskii V.N. (P. 48).

The advantages of Hydrogenated Butadiene Acrylonitrile Rubbers in comparison with the other unsaturated rubbers in production of thermo resistant drilling equipment are shown.

Polychloroprene Based Adhesives of Improved Adhesion to Polychloroprene Based Vulcanizates Keibal N.A., Bondarenko S.N., Kablov V.F., Sergeev G.N. (P. 49).

Amino-containing oligomer modifiers for chloroprene based adhesives (series 88) obtained as result of reaction between epoxy resin and bottom of aniline production are suggested to improve the adhesion to polychloroprene based vulcanizates.

Method of Calculation of Quasi-Static Deformation of Metal-Elastomer Elements of Shock Absorbers Evelson L.I., Rafalovskaya M. Ya. (P. 50).

Information about methods, algorithm and software for FEM analysis of quasi-static deformation of elastomer in metal-elastomer elements of shock absorbers is presented. Deformations under consideration are 0?50%. The geometrical non-linearity of the process and non-compressibility of elastomer as well as complicated boundary conditions (including dry friction) are taken into account.

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