Back SearchTitle: ONLINE CONTROL FOR THE PROCESSING OF UREA RESIN MOULDING COMPOUNDS
Page Range: p.T/1-T5
Author(s): Stark W; Kurten Ch
File size: 94K
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Issue Year: ipsat
Volume: 36
Issue No: No.7
Abstract
Dielectric cure monitoring was evaluated as a means of controlling the injection moulding of urea moulding compounds and reducing cycle time. A general overview of the reaction process was carried out and a realistic upper limit for the mould temperature set by means of DMA and DSC. Following preliminary tests on a pilot plant scale, tests were extended to the injection moulding of switch plates and a reduction in cycle time was achieved by increasing mould temperature and preventing overcure using a process control system based on changes in dielectric signals. 11 refs. (Article translated from Gummi Fasern Kunststoffe, No.12, 2008, p.790-793)
Title: THE RELATIONSHIP BETWEEN THE TEMPERATURE DEPENDENCE OF THE MECHANICAL LOSS TANGENT AND THE OUTPUT CHARACTERISTICS OF TREAD RUBBERS OF DIFFERENT COMPOSITION
Page Range: p.T/7-T/11
Author(s): Piguchin A M; Stepanova L I; Shcherbakov Yu V
File size: 95K
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Issue Year: ipsat
Volume: 36
Issue No: No.7
Abstract
An investigation was carried out into the relationship between the temperature dependence of the mechanical loss tangent and output characteristics of tread rubbers. Tests were conducted on rubber formulations based on solution and emulsion butadiene-styrene and butadiene rubbers with different structures and rubbers based on solution SBR containing various amounts of carbon black and silica fillers. The loss tangent was determined on an Instron-8032 dynamic testing machine under sinusoidal loading at a frequency of 5 Hz, a strain amplitude of 5% and a static compressive strain of 20%. 4 refs. (Article translated from Kauchuk I Rezina, No.4, 2008, p.2-5)
Title: QUANTUM-CHEMICAL MODELLING AND PREDICTION OF THE STRUCTURE AND FUNCTIONAL ACTIVITY OF FREE RADICALS AND BIRADICALS OF N-PHENYL-N'-ISOPROPYL-P-PHENYLENEDIAMINE AND N,N'-DIPHENYL-P-PHENYLENEDIAMINE
Page Range: p.T/13-T/17
Author(s): Mukhutdinov E A; Mukhutdinov A A
File size: 122K
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Issue Year: ipsat
Volume: 36
Issue No: No.7
Abstract
The results are reported of the quantum chemical modelling of the structural parameters, electron structure and energy characteristics as well as the prediction of the comparative functional activity of molecules of N-phenyl-N'-isopropyl-p-phenylenediamine (Diafen FP), N,N'-diphenyl-p-phenylenediamine and biradicals of given formulae. The data obtained make it possible to predict the mechanism of thermooxidative and ozone ageing of tyre rubbers by Diafen PP and N,N'-diphenyl-p-phenylenediamine antioxidants. 13 refs. (Article translated from Kauchuk I Rezina, No.4, 2008, p.6-10)
Title: AGEING AND STABILISATION OF POLYMERS - WHO NEEDS IT AND WHY? A HISTORICAL PERSPECTIVE
Page Range: p.T/19-T/22
Author(s): Zaikov G E
File size: 37K
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Issue Year: ipsat
Volume: 36
Issue No: No.7
Abstract
A review is presented on the history of ageing and stabilisation of polymers and on work being carried out in this field in Russia. Attention is paid to nanocomposite stabilisation, chemiluminescence and research into natural polymers. (Article translated from Kauchuk I Rezina, No.4, 2008, p.10-13)
Title: INFLUENCE OF THE FREE ENERGY DENSITY ON THE COATING OF RUBBER BY ION-ASSISTED APPLICATION OF THIN FILMS
Page Range: p.T/23-T/26
Author(s): Tashlykov I S; Veres O G
File size: 100K
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Issue Year: ipsat
Volume: 36
Issue No: No.7
Abstract
An investigation was carried out into the effect of free energy density on the structure formation of nitrile rubber coated with graphite, titanium, zirconium and molybdenum via ion-assisted deposition and on adhesion interaction between the coating and rubber substrate. Rutherford backscattering was employed to study the elemental composition of the rubber surface and the adhesion stability of the coatings on the rubber determined using the pin pull test. A table showing the influence of the energy of the assisting ions on the free energy density in cascades of atomic collisions as accelerated metal ions are stopped is included. 15 refs. (Article translated from Kauchuk I Rezina, No.4, 2008, p.13-17)
Title: PROPERTIES OF SHUNGITE FILLERS FROM DIFFERENT FIELDS AND THEIR EFFECT ON THE PROPERTIES OF RUBBERS
Page Range: p.T/27-T/22
Author(s): Tolstova O N; Pichugin A M; Kosso R A; Titova T V
File size: 64K
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Issue Year: ipsat
Volume: 36
Issue No: No.7
Abstract
The effect of shungite fillers from the Kareliya and Kazakhstan fields and combinations thereof with carbon black or precipitated silica on the properties of standard and typical tyre rubbers were investigated and compared. Rubbers based on SKS-30ARK and SKI-3 were employed and tables of comparative properties of typical tread rubber mixes and lorry tyre rubbers, rubber mixes and rubber compounds of the bottom interlayer of the first carcass layer and rubber mixes and rubber compounds for bead wire insulation tabulated. (Article translated from Kauchuk I Rezina, No.4, 2008, p.22-26)
Title: A DEHYDROGENATION CATALYST AS A FILLER FOR RUBBER MIXES
Page Range: p.T/33-T/35
Author(s): Kazakov Yu M; Khusainova R M; Vol'fson S I
File size: 57K
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Issue Year: ipsat
Volume: 36
Issue No: No.7
Abstract
The possibility of using spent hydrogenation catalyst (IM-2201) containing various metal oxides as a filler for rubber mixes based on butadiene-alpha-methylstyrene rubber (SKMS-30ARKM-15) was investigated. The processing and physicomechanical properties of the filled rubbers were determined and compared with those of rubbers filled with carbon black. Data are included showing the effects of the type and content of filler on the properties and swelling behaviour of the mixes and vulcanisates. 4 refs. (Article translated from Kauchuk I Rezina, No.4, 2008, p.30-32)
Title: FEATURES OF THE DEFORMATION AND DESCRIPTION OF THE ELASTIC PROPERTIES OF FILLED ELASTOMERS UNDER ELONGATION
Page Range: p.T/37-T41
Author(s): Shil'ko S V; Chernous D A; Anfinogenov S B
File size: 176K
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Issue Year: ipsat
Volume: 36
Issue No: No.7
Abstract
The development of a mathematical model for describing the effect of the volume fraction of fillers on the elastic modulus of rubbers and predicting the non-linear deformation of the filled rubbers is reported. Stress-strain data are included. 12 refs. (Article translated from Kauchuk I Rezina, No.4, 2008, p.34-38)
Title: CALCULATING THE PROFILING CHANNELS FOR THE PRODUCTION OF GUARANTEED-QUALITY, LONG, MECHANICAL RUBBER GOODS
Page Range: p.T/43-T/45
Author(s): Sokolov M V; Klinkov A S; Belyaev P S; Odnol'ko V G
File size: 82K
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Issue Year: ipsat
Volume: 36
Issue No: No.7
Abstract
A method for determining the numerical value of overall shear under specified extrusion conditions and during the processing of rubber mixes, making it possible to predict changes in extrudate dimensions in the design of profiling channels, is presented. 2 refs. (Article translated from Kauchuk I Rezina, No.4, 2008, p.38-40)
Title: USING WASTE RUBBER TO PRODUCE SECONDARY MOULDED MECHANICAL RUBBER GOODS
Page Range: p.T/47-T/48
Author(s): Ushmarin N F; Vasil'yeva N G; Kol'tsov N I
File size: 53K
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Issue Year: ipsat
Volume: 36
Issue No: No.7
Abstract
Rubber crumb from polyisoprene, SBR and BR was combined with inexpensive mineral fillers (Taurit TSD, micarb 03-96) and additives (monoethanolamine and oxanol KD-6) and used to manufacture mechanical rubber goods (car mats and "sleeping policemen" for railway lines). Products with the best plastoelastic and physicomechanical properties were obtained by two-stage manufacture in internal mixers. 2 refs. (Article translated from Kauchuk I Rezina, No.4, 2008, p.40-41)
Title: VULCANIZATION ACCELERATORS
Page Range: p.T/49-T/55
Author(s): Komatsu T
File size: 122K
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Issue Year: ipsat
Volume: 36
Issue No: No.7
Abstract
The history of vulcanisation accelerators is outlined and the effects of sulphur, accelerator and zinc oxide, accelerator combinations, efficient vulcanisation and cure temperature discussed. The characteristics of accelerators (aldehyde ammonia, aldehyde amine, thiourea, guanidine, thiazoles, sulphenamides, thiurams, dithiocarbamates and xanthates) are described and guidelines for choosing accelerators are discussed in terms of vulcanisation performance, form and dispersibility, blooming, staining and discolouration and environmental impact and health risk. Regulations and legislation on accelerators are also briefly discussed. 9 refs. (Article translated from Nippon Gomu Kyokaishi, No.1, 2009, p.33-38)
Title: IMPROVEMENT OF IMPACT STRENGTH OF ELASTOMER BLENDED POLYPROPYLENE BY FILLING WITH FINE PARTICLES
Page Range: p.T/57-T62
Author(s): Nagata K; Hikasa S
File size: 243K
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Issue Year: ipsat
Volume: 36
Issue No: No.7
Abstract
The effects of dispersion states of a blended elastomer (SEBS) particles and fine calcium carbonate particles on the impact strength of PP were investigated and the influence of the synergism between filler and elastomer on the mechanical properties of the composites examined. The mechanism of impact strength improvement was considered on the basis of the analysis of fracture surfaces by means of optical microscopy. (Article translated from Nippon Gomu Kyokaishi, No.4, 2009, p.124-129). 19 refs.