Abstracts

№5, 2017

On Difference in the Structure Organization of Different BNK

Sokolova L.V. (Assist. Prof., Ph. D. [Chem.]), Tatarinov G.A. (Postgrad. Stud.)

Correlation times of rotation mobility (τс) of two radical of different molar volume in BNK (BNKS and SKN) of different NAK content were studied by EPR-spectroscopy. Difference in comonomer composition of disordered parts of BNKS and SKN are determined. Conclusion is made that aggregation degree of parts of alternating units is lower, and density of chain fragment in the disordered part of BNKS is also lower. Data are shown that presence of the ordered structures of large dimensions in BNKS results in decrease of flexibility of interchains more than small nanostructures in SKN.

Key words: BNKS, SKN, structure, EPR, radical, correlation time, aggregation of units, nanostructures

Single-Walled Carbon Nanotubes in the Vulcanizates Based on Different Rubbers. Part 2. Physical and Mechanical Properties.

Mokhnatkin A.M. (Ph. D. [Techn.], Chief of Department), Dorozhkin V.P. (Prof., D. Sc. [Chem.]), Muradyan V.E. (Ph. D. [Chem.], Deputy Director), Mukhtarov A.R. (Eng.), Mokhnatkina E.G. (Ph. D. [Techn.], Chief of Chair), Batrshina R.R. (Eng.)

Effect of content of single-walled carbon nanotubes (SWCNT) and their carboxylated analogues (SWCNT-COOH) on the physical and mechanical properties of sulfur vulcanizates of NR, SBR, and HNBR have been studied. It is found that the polarity of the rubber has a significant influence on the elongation at break of vulcanizates, their strength, hardness and rebound resilience. The effect of polarity of the rubber on the dependence of the strain at 100, 200 and 300 % elongation of vulcanizates on the content of SWCNT and SWCNT-COOH is also shown.

Key words: single-walled carbon nanotubes, physical and mechanical properties, polarity of rubber

Single-Walled Carbon Nanotubes in the Vulcanizates Based on Different Rubbers. Part 3. Study of Dielectric Properties of Vulcanizates

Dorozhkin V.P. (Prof., D. Sc. [Chem.]), Muradyan V.E. (Ph. D. [Chem.], Deputy Director),

Mokhnatkin A.M. (Ph. D. [Techn.], Chief of Department.), Mokhnatkina E.G. (Ph. D. [Techn.], Chief of Chair),

Mukhtarov A.R.(Eng.), Batrshina R.R. (Eng.)

Dielectric properties, electrical conductivity γ', and dynamical mechanical properties of some sulfur vulcanizates based on rubbers of different chemical nature: NR, SВR, and HNBR were studied. Vulcanizates were filled with single-walled carbon nanotubes (SWCNT) in amount 0,05%-0,3% (mas.), some with chemically modified SWCNT of –СООН group on the surface. Components of complex dielectric permitttivity ε', ε'', and γ', as well as dielectric tgδ were measured at frequency range of 10 1 - 107 Hz at room temperature, components of complex dynamical mechanical modulus G′ and G′′ in temperature range of -80 - +80ºС at heating rate 1ºС/min. Connection of the dependencies of the effect of SWCNT on both electric and mechanical properties of vulcanizates with polarity of rubber is shown, particularly differed the values and frequency positions of ε'' minimums. A possible explanations of results connected with views on structure of vulcanizates filled with SWCNT are under consideration.

Key words: single-walled carbon nanotubes, polarity of rubber vulcanizates, dielectric loss, electrical conductivity, dielectric tgδ, loss modulus, SEM

The Main Results of the Study of the Influence of Single-Walled Carbon Nanotubes of the Company OCSiAl on the Properties of Rubber Compounds of Different Rubbers and Fillers

Dorozhkin V.P. (Prof., D. Sc. [Chem.]), Mukhtarov A.R. (Eng.), Mokhnatkin A.M. (Ph. D. [Techn.], Chief of Department), Muradyan V.E. (Ph. D. [Chem.], Deputy Director), Mokhnatkina E.G. (Ph. D. [Techn.], Chief of Chair)

The results of the study on the influence of OCSiAl single-walled carbon nanotubes (SWCNT) on the properties of rubber compounds based on different rubbers and with different fillers are summarized. The whole group of properties is considered systematic: electrical and elastic properties; processing and vulcanization properties of rubber compounds; physical and mechanical properties; service properties of treads. Comparative analysis of the influence of the chemical nature of rubber, different types of fillers (carbon black of different activity, silica), type of SWCNT and its content is presented.

Key words: single-walled carbon nanotubes, physical and mechanical properties, electrical properties, processing properties

Study on the Type of Wear of Cover is the Efficient Way to Open the Possibilities for Increase the Durability of Conveyor Belts

Golikov G.F. (Ph. D. [Techn.], Chief of Sector)

The data suggested the monitoring of conveyor belts at service for increase of their durability is summarized. The photos of different type of wear are presented. The increase of the strength of rubber under different conditions is recommended in the case of different type of wear: at abrasive wear the increase of usual tensile strength, at «rolling up» wear the increase of tearproof, at fatigue wear besides both of this types of strength, to increase the dynamic fatigue strength. It is possible to correct the properties of rubber and belts timely taking into account the monitoring data. It opens the possibility to provide long-term business relation with consumers.

Key words: conveyor belts, wear, durability

Project – Management

Part 1. Basic Notions and Definitions

Friedman A. (Head of Projects / Managing Partner)

The publication consists of two parts. In the first part are presented the basic notions and definitions of project management. Are given the description of project formats and their contents. Are shown the structural and organizational charts of project management in two main formats; are revealed their features and differences. In the second part, planned to be published in the next issue of the journal, will be considered a number of typical problems and solutions for the successful implementation of projects.

Key words: project management, project formats, project contract types, EPCM / EPC - contractor, main contractor of the project, project customer

Nanomechanics of Reinforcement of Filled Elastomers

Gamlitsky Yu.A. (Assist. Prof., Ph. D. [Phys.-Mat.], Chief Res.)

Review devoted to concepts on reinforcement of rubbers. Model based on assumption of existence of thin pseudo glassy layer of rubber matrix on the surface of filler particles is presented. Glassy state is undergoing in rubberlike one with the increase of the distance from the surface of particles. Under deformation the more deformed macromolecules go out from the glassy layers; this mechanism is similar to mechanism of forced elasticity.

Key words: rubber, active filler, reinforcement; strength; pseudo glassy layer of rubber; forced elasticity

Play on Advance

Post-release on 9-th International Conference «Polymers in Cable Industry 2017» organized by INVENTRA (08.06.17, Moscow).

Key words: cables, cable plants, PVC, PE, nongalogen materials, carbon-black-filled PE, recycling, quality, standards, combustion, ecology, export, import, import substitution

The Strongest Survive

Post-release on the Conference «Polycarbonates 2017» organized by INVENTRA, CREON group (06 – 07 .09.17, Kazan).

Key words: polycarbonate, granulate, monolith polycarbonate, sheet polycarbonate, benzene, fields of application, demand, export, «Kazanorgsyntez»

I. Kondakov is the Author of the First Investigations on the Synthesis of Rubber

Sokolova M.D. (D. Sc. [Techn.], Acting Director), Kurlyand S.K. (Consultant), Pavlova V.V. (Postgrad. Stud.)

Article is devoted to 160 year anniversary of the birth of Russian chemist’s Ivan Kondakov. The most important contributions in science of I. Kondakov are the first synthesis of rubber and the first monograph about synthetic rubber. His biography (the place of his birth is Yakutia) and scientific advances are briefly described.

Key words: history, polymerization, synthetic rubber, Yakutia

Outstanding Personality of Tire Industry - P.F. Badenkov

Edition of the Journal “Kauchuk i Rezina”, Moscow

Article is devoted to the open of Memorial Plaque in honour of Hero of Socialist Labour, Drector of Scientific-Research Institute of Tire Industry P.F. Badenkov. He was at the sours of creation of soviet tire industry. His biography is briefly described. The role of P.F. Badenkov not only in the formation of tire industry, but also in its development and formation of acivements.

Key words: history, tire industry, Yaroslav Tire Plant, tire for military industry, Ministry of Rubber Industry, Chief Administration of Tire Industry, Scientific-Research Institute of Tire Industry, radial tire, tire for «Buran»