Back SearchTitle: DEVELOPMENT AND APPLICATION OF PHOTOACOUSTIC AND PHOTOTHERMAL SYSTEMS FOR MEASURING THE GAS PERMEABILITY OF POLYMERS
Page Range: p.T/1-T/6
Author(s): Szabo G; Bozoki Z; Pap G; Koatona T; Filus Z
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Issue Year: ipsat
Volume: 34
Issue No: No.11
Abstract
The principles of gas permeability measurement and photoacoustic and photothermal methods of measurement are outlined together with the methods employed to numerically model the passage of gas. Newly developed photoacoustic and photothermal systems for measuring the gas permeability of polymers are described and applied to the determination of the gas permeability of peroxide-cured hydrogenated nitrile rubber and sulphur-vulcanised polychloroprene/polybutadiene blends. 4 refs. (Article translated from Gummi Fasern Kunststoffe, No.6, 2007, p.343-347)
Title: STUDIES OF THE EFFECT OF CARBON NANOTUBES ON THE DYNAMIC MECHANICAL PROPERTIES OF AN EPOXY POLYMER
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Author(s): Trenisova A L; Anoshkin I V; Gorbunova I Yu; Kerber M L
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Issue Year: ipsat
Volume: 34
Issue No: No.11
Abstract
Composites were fabricated from an epoxy oligomer (ED-20), a curing agent (4,4'-diaminodiphenylsulphone) and carbon nanotubes and the effect of the nanotubes on the properties of the composites investigated by various techniques, including DMA and TMA. Properties evaluated included gel time, Tg, heat resistance and mechanical properties. 10 refs. (Article translated from Plasticheskie massy, No.11, 2006, p.10-12)
Title: STUDY OF THE ADHESION INTERACTION OF EPOXY RESIN AND STICKER IN RESINATE
Page Range: p.T/11-T/13
Author(s): Danilova-Volkovskaya G M; Yazyeva S B; Amineva E Kh
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Issue Year: ipsat
Volume: 34
Issue No: No.11
Abstract
The adhesion between epoxy resin and PVC printed with various inks was investigated using a specially developed sessile drop method to determine equilibrium wetting angles. Surface tension of the epoxy resin was determined using the Wilhelmi glass plate method and a phenomenological model derived for relating the physical effects occurring at the interface with microparameters describing paired molecular interactions. 6 refs. (Article translated from Plasticheskie Massy, No.11, 2006, p.13-14)
Title: EFFECT OF CORROSIVE MEDIA ON THE STRUCTURE OF METAL-CONTAINING COMPOSITE MATERIALS BASED ON EPOXY POLYMERS
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Author(s): Shut N I; Gorshunov O V; Sichkar T G
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Issue Year: ipsat
Volume: 34
Issue No: No.11
Abstract
An investigation was carried out into the relationship between the composition of composites based on an epoxy resin cured with polyethylene polyamines and filled with copper and nickel and the dynamics of swelling of the composites in corrosive media (aqueous solutions of hydrochloric acid, nitric acid and sodium hydroxide). Reversible and irreversible changes occurring in the structure of the composites under the action of alkaline and acidic media were followed and the effects of cure temperature and filler volume fraction on the swelling behaviour of the composites examined. 16 refs. (Article translated from Plasticheskie Massy, No.11, 2006, p.15-19)
Title: SYNTHESIS AND PROPERTIES OF CROSSLINKED METHYL METHACRYLATE POLYMERS
Page Range: p.T/23-T/27
Author(s): Voloshinets V A; Van-Chin-Syan Yu Ya; Gubrii Z V
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Issue Year: ipsat
Volume: 34
Issue No: No.11
Abstract
The preparation of PMMA, copolymers of methyl methacrylate with butanediol-1,4-dimethacrylate (BDDM) in the presence of 2,3-substituted naphthoquinones-1,4 and copolymers of methyl methacrylate with monomeric azo dye and BDDM is described and the results are reported of studies of the extraction of the additives therefrom and diffusion of naphthoquinone and azo dye therethrough. Conditions for producing biocidal and coloured polymers with prolonged service lives are established. 10 refs. (Article translated from Plasticheskie Massy, No.11, 2006, p.23-26)
Title: STRUCTURE OF MONOMERS OF ALPHA-SUBSTITUTED ACRYLATES
Page Range: p.T/29-T/32
Author(s): Sivergin Yu M; Stankevich I V
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Issue Year: ipsat
Volume: 34
Issue No: No.11
Abstract
The results are reported of a study of the structure of alpha-substituted acrylates carried out using proton NMR spectroscopy, Carbon-13 NMR spectroscopy and quantum chemical analysis. Values of q and delta for atoms C1 and C2 in molecules, ionisation potentials, dipole moments, enthalpies of formation and Weinberg constants are tabulated. 10 refs. (Article translated from Plasticheskie Massy, No.11, 2006, p.30-32)
Title: MODIFICATION OF LATEX SYSTEMS WITH POLYMERIC COMPLEXES OF SORBIC ACID
Page Range: p.T/33-T38
Author(s): Snezhko A G; Fedotova A V; Borisova Z S; Filinskaya Yu A; Shtil'man M I; Suprun O V; Tsatsakis A M; Tzatzarakis N
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Issue Year: ipsat
Volume: 34
Issue No: No.11
Abstract
Latices based on vinyl chloride-vinylidene chloride copolymers were modified using polymeric complexes of sorbic acid as antimicrobial additives and controllers of volume/surface properties and the effect of the complexes on the properties, particularly antimicrobial activity of the latices and coatings made therefrom investigated. It was found that latices and coatings containing polyvinyl pyrrolidone complexes of optimised composition possessed prolonged antimicrobial activity, which was retained even on paper and food surfaces. 5 refs. (Article translated from Plasticheskie Massy, No.11, 2006, p.33-36)
Title: INVESTIGATION OF MOISTURE DIFFUSION IN BASALT-REINFORCED PLASTIC BASED ON EPOXY RESIN
Page Range: p.T/39-T/42
Author(s): Igonin N G; Tatarintseva O S
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Issue Year: ipsat
Volume: 34
Issue No: No.11
Abstract
Moisture diffusion in basalt-reinforced epoxy resin composites intended for the manufacture of hot and cold water pipes was investigated by means of gravimetry and layer-by-layer determination of moisture concentration. The results are discussed in terms of kinetics of sorption, sorption and desorption isotherms, temperature dependence of diffusion coefficients and concentration dependence of diffusion coefficients. 4 refs. (Article translated from Plasticheskie Massy, No.11, 2006, p.37-39)
Title: DEVELOPMENT AND INVESTIGATION OF THE PROPERTIES OF AN EFFECTIVE HEAT STABILISER FOR CHLOROPRENE RUBBER NAIRIT KR-50 BASED ON THE CONDENSATION PRODUCT OF GOSSYPOL RESIN WITH AMINE COMPOUNDS
Page Range: p.T/43-T/45
Author(s): Mirvaliev Z Z
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Issue Year: ipsat
Volume: 34
Issue No: No.11
Abstract
The kinetics of thermooxidative degradation of polychloroprene (Nairit KR-50) containing the condensation product of Gossypol resin with amines as heat stabiliser and the physicomechanical properties of the stabilised rubber were investigated and comparisons made with polychloroprene stabilised with phenyl-b-naphthylamine. The effect of heat stabiliser content on the induction period and weight loss of the polychloroprene during thermooxidative degradation was examined and the tensile properties of the vulcanisates after heat ageing in air at 100 degrees C for 48 h tabulated. 2 refs.(Article translated from Plasticheskie Massy, No.11, 2006, p.40-42)
Title: STUDY OF THE INFLUENCE OF GLYCERIN ACID COMPOUNDS ON THE HEAT STABILITY OF POLYVINYL CHLORIDE
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Author(s): Nafikova R F; Mazina L A; Afanas'ev F I; Akhmetkhanov R M; Deberdeev R Ya
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Issue Year: ipsat
Volume: 34
Issue No: No.11
Abstract
The effectiveness of glycerin acid compounds as lubricants in rigid PVC composites containing tribasic lead sulphate, calcium stearate and titanium dioxide was evaluated and compared with that of an imported lubricant, Loxiol GH-4. The glycerin acid compounds were found to be effective mechanochemical stabilisers/lubricants for PVC and capable of reducing considerably the dehydrochlorination rate of the PVC, thereby fulfilling the role of heat stabiliser. 6 refs. (Article translated from Plasticheskie Massy, No.1, 2006, p.42-43)
Title: CARBON-BLACK-FILLED POLYSTYRENE AS AN INTEGRAL NANOCIRCUIT. PART 2. SEMICONDUCTOR HETEROSTRUCTURE AND POSSIBILITIES OF ACHIEVING A LIGHT-DIODE FUNCTION WITH CARBON-BLACK-FILLED POLYSTYRENE
Page Range: p.T/49-T/53
Author(s): Akhmedov U Kh
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Issue Year: ipsat
Volume: 34
Issue No: No.11
Abstract
The development of a carbon black-filled PS with the properties of a light diode in the far-infrared range is reported. The effect of visible light on the main paramagnetic characteristics of the PS composite is discussed and the structure of the composite described. 15 refs. (Article translated from Plasticheskie Massy, No.11, 2006, p.43-46)
Title: STUDY OF THE INFLUENCE OF PROCESSING TECHNOLOGY ON THE ELECTRICAL PROPERTIES OF COMPOSITES
Page Range: p.T/55-T/57
Author(s): Savvinova M E; Kovalenko N A
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Issue Year: ipsat
Volume: 34
Issue No: No.11
Abstract
Polyolefin-based composites were processed by hot and cold pressing and extrusion and the effect of the processing method on the electrical properties of the composites investigated. Tests were conducted on high molec.wt. PE, ultra high molecular weight PE, LDPE and a rubber mix of grade V-14 and conductive filler (KL-1 coke). Maximum electrical conductivity was achieved by pre-pressing a filler blend, grinding and introducing a rubber compound during milling. Carbon-containing composites based on an elastomer and ultra high molecular weight PE produced by extrusion were considered suitable for self-regulating heating cables. 4 refs. (Article translated from Plasticheski Massy, No.11, 2006, p.54-55)
Title: LASER MODIFICATION OF POLYMERIC MATERIALS. PART 2. CHEMICAL REACTIONS INDUCED BY LASER BEAM
Page Range: p.T/59-T/66
Author(s): Rytlewski P; Zenkiewicz M
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Issue Year: ipsat
Volume: 34
Issue No: No.11
Abstract
Changes in the surface layer of polymeric materials occurring under the action of laser irradiation, including generation of free radicals, oxidation and crosslinking, and the effects of these changes on the properties of the irradiated polymers are discussed. 34 refs. (Article translated from Polimery, No.6, 52, 2007, p.403-410)