Back SearchTitle: SILICONE RUBBERS IN MEDICAL APPLICATIONS - FRICTION REDUCTION WITH LSR TOP COAT
Page Range: p.T/1-T/4
Author(s): Ledig B
File size: 115K
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Issue Year: ipsat
Volume: 37
Issue No: No.2
Abstract
The growing use of liquid silicone rubber in medical applications is briefly discussed and the LSE 4000 series of liquid silicone rubbers for medical and pharmaceutical applications is introduced. Examples of medical applications of LSE 4000 are presented and the development of a two-component liquid silicone rubber topcoat (TP3719) for reducing surface friction is reported. This topcoat can be applied to any silicone rubber to provide a marked reduction in friction, lower dust attraction and enhanced cleanability through sterilisation. 2 refs. (Article translated from Gummi Fasern Kunststoffe, No.11, 2009, p.658-661)
Title: MAIN DIRECTIONS OF SCIENTIFIC RESEARCH ON ANIONIC-POLYMERISED POLYMERS
Page Range: p.T/5-T/11
Author(s): Glukhovskoi V S; Litvin Yu A; Kovtunenko L V
File size: 93K
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Issue Year: ipsat
Volume: 37
Issue No: No.2
Abstract
The industrial synthesis of statistical butadiene-styrene copolymers, properties of industrial, high-vinyl, solution butadiene-styrene rubbers and an industrial process for producing butadiene-styrene thermoplastic elastomers are described. Tables are including showing the properties of DSSK-2545M27 rubber, oil-extended DSSK rubber, rubber mixes and vulcanisates based on DSSK-2560M27 and thermoplastic vulcanisates based on styrene-butadiene copolymer. (Article translated from Kauchuk I Rezina, No.2, 2009, p.9-15) 6 refs.
Title: LOW-MOLECULAR-WEIGHT POLYDIENES: SYNTHESIS, PROPERTIES, MODIFICATION, AND APPLICATION
Page Range: p.T/13-T/15
Author(s): Gusev Yu K; Glukhovskoi V S; Yudin V P; Shvetsova E A
File size: 64K
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Issue Year: ipsat
Volume: 37
Issue No: No.2
Abstract
The synthesis of low molec.wt. polydienes based on butadiene (synthesis via chain transfer) and isoprene (synthesis by frontal initiation, characteristics of grades of low molec.wt. polybutadiene and chemical modification of low molec.wt. polybutadiene are described and discussed. (Article translated from Kauchuk I Rezina, No.2, 2009, p.15-17) 13 refs.
Title: VULCANISATION OF HYDROGENATED BUTADIENE-ACRYLONITRILE RUBBERS WITH QUINOLIC ETHER
Page Range: p.T/17-T/19
Author(s): Kuvardina K S; Pen V R; Levchenko S I
File size: 66K
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Issue Year: ipsat
Volume: 37
Issue No: No.2
Abstract
The possibility of vulcanising hydrogenated nitrile rubbers (Therban C3446 and Therban A42307) with quinolic ether was investigated and the effects of quinolic ether content and temperature on the vulcanisation characteristics and of quinolic ether content on certain properties of the rubber mixes and compounds evaluated. The rubber vulcanisates possessed a good combination of processing properties and physicomechanical properties. (Article translated from Kauchik I Rezina, No.2, 2009, p.17-20) 8 refs.
Title: STABILITY OF OZONIDE RINGS IN UNSATURATED POLYMERS DURING LATEX OZONISATION
Page Range: p.T/21-T/T23
Author(s): Poluektov P T; Vlasova L A; Gritskova I A
File size: 72K
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Issue Year: ipsat
Volume: 37
Issue No: No.2
Abstract
Polybutadiene latex was prepared at a temperature of 5 to 6 degrees C in an aqueous emulsion stabilised with potassium salts of fatty acids and disproportionated rosin and ozonised in a thermostatically controlled flask. The factors affecting the formation and stability of ozonide rings during ozonolysis of the latex were investigated and the activation energy of thermal breakdown of ozonide rings under given experimental conditions determined. (Article translated from Kauchuk I Rezina, No.2, 2009, p.25-27) 10 refs.
Title: RHEOLOGY OF THE CURING OF FILLED (VINYLDIMETHYLSILOXY)POLYDIMETHYL SILOXANES
Page Range: p.T/25-T/28
Author(s): Kovyazin A V; Kopylov V M; Kovyazin V A; Bondareva M M; Sazikova N N; Chalykh A E; Shapagin A V; Sotnikova E S
File size: 115K
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Issue Year: ipsat
Volume: 37
Issue No: No.2
Abstract
An investigation was carried out into the kinetics of vulcanisation of composites based on alpha,omega-divinylpolydimethyl siloxane rubber and containing hydrophobised pyrogenic silica, a crosslinking agent, an inhibitor and platinum catalyst. The effects of filler content, catalyst, temperature and inhibitor concentration on gel time and life of the composites were examined and an empitrical equation derived for calculating gel time and composite lifetime as a function of temperature and molar ratio of inhibitor and platinum catalyst. (Article translated from Kauchuk I Rezina, No.2, 2009, p.28-31) 5 refs.
Title: OLIGOMERIC DERIVATIVES OF RESORCINOLS IN THE COMPOSITION OF TYRE RUBBERS
Page Range: p.T/29-T/31
Author(s): Fomin S V; Shirokova E S; Dvoeglazova T P
File size: 58K
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Issue Year: ipsat
Volume: 37
Issue No: No.2
Abstract
The possibilities of replacing pine rosin with an oligomeric derivative of resorcinol (Chemoxol EE) as adhesion promoter and of replacing Octophor N with Chemoxol-O resin in rubber mixes and vulcanisates, including tyre mixes, are investigated. Tables are included showing the properties of the rubber mixes and vulcanisates containing pine rosin, Chemoxol, Octophor N and Chemoxol-O. (Article translated from Kauchuk i Rezina, No.2, 2009, p.31-33) 3 refs.
Title: NANOPRENE AND THE SERVICE LIFE OF TYRES
Page Range: p.T/33-T/35
Author(s): Obrecht W
File size: 81K
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Issue Year: ipsat
Volume: 37
Issue No: No.2
Abstract
An innovative feedstock component, called Nanoprene, with a very narrow particle size distribution, is reported and its effect on the properties of rubber mixes is discussed. Nanoprene grades available are briefly described and the results of tests on tyres containing Nanoprene are presented. The use of Nanoprene in tyres in shown to improve rolling resistance, wet traction and abrasion resistance. (Article translated from Kauchuk I Rezina, No.2, 2009, p.33-35)
Title: EFFECT OF ANTI-ADHESIVE LUBRICANTS ON THE QUALITY OF RUBBERY HEAT-SHIELDING COATINGS
Page Range: p.T/37-T/42
Author(s): Belyakova E G; Mel'nikov V N
File size: 86K
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Issue Year: ipsat
Volume: 37
Issue No: No.2
Abstract
The results are reported of investigations into the effect of anti-adhesive lubricants (K-21 and PENTA-107) applied to compression moulds on the quality of rubber heat shield coatings used in the aircraft industry and in rocket building. Data are included showing changes in weight during swelling of the coatings based on different rubber mixes manufactured with the anti-adhesive lubricants and the influence of the type of anti-adhesive lubricant on the adhesive strength of the coatings after bonding and accelerated heat ageing. (Article translated from Kauchuk I Rezina, No.2, 2009, p.38-43) 7 refs.
Title: IMPROVEMENT IN THE QUALITY OF MANUFACTURE OF LOW-FUEL-PERMEABILITY HOSING
Page Range: p.T/43-T/45
Author(s): Zuev A V; Pichkhidze S Ya; Yurovskii V S
File size: 87K
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Issue Year: ipsat
Volume: 37
Issue No: No.2
Abstract
The results are reported of tests conducted on barrier layers fabricated from a tetrafluoroethylene-hexafluoropropylene copolymer, tetrafluoroethylene-hexafluoropropylene-vinylidene fluoride terpolymer and a copolymer of a fluorine-containing rubber and fluorothermoplastic for use in fuel hoses with rubber linings for automobiles. The effect of the type of rubber on the ply-separation bond strength of vulcanisates with the different fluoropolymers is examined and the fuel permeability of the hoses evaluated. Hoses which satisfy the ecological requirements of Euro-3 and Euro-4 standards are produced. (Article translated from Kauchuk i Rezina, No.2, 2009, p.43-45) 9 refs.
Title: MAGNETORHEOLOGY OF MAGNETIC COMPOSITE GELS
Page Range: p.T/47-T/54
Author(s): Abe N; Mitsumata T
File size: 315K
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Issue Year: ipsat
Volume: 37
Issue No: No.2
Abstract
A review is presented on magnetic gels whose elastic modulus varies in response to the application of a magnetic field and an examination is made of the mechanism responsible for the change in modulus. The focus is on magnetic composite gels, effect of magnetorheology on magnetic soft materials and the giant-negative magnetoelastic effect in polysaccharide magnetic gels. (Article translated from Nippon Gomu Kyokaishi, No.8, 2009, p.356-362) 17 refs.