Back SearchTitle: NEW COPOLYMERS BASED ON UNSATURATED POLYESTER RESIN PN-15
Page Range: p.T/1-T/4
Author(s): Cheremukhina I V; Studentsov V N
File size: 79K
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Issue Year: ipsat
Volume: 36
Issue No: No.5
Abstract
The synthesis of novel copolymers with improved heat resistance based on an unsaturated polyester resin with aniline-phenol-formaldehyde resin and iodine or hydropyrite as curing system is described and their curing characteristics were investigated. The effects of the layered application of components and of magnetic treatment on the degree of curing, and on impact, flexural and water absorption properties of composites of the copolymers with synthetic fibres such as polyacrylonitrile, polyamide-6 or viscose as fillers were evaluated, and the results are discussed in terms of interfacial adhesion between binder and filler. 5 refs. (Article translated from Plasticheskie Massy, No.1, 2008, pp.13-15)
Title: EFFECT OF DISPERSED AND FIBRE FILLERS ON THE PROPERTIES OF POLYMERISATION-FILLED NYLON-6
Page Range: p.T/5-T/6
Author(s): Sushchenko N V; Lisina E V; Levkina N L; Ustinova T P
File size: 54K
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Issue Year: ipsat
Volume: 36
Issue No: No.5
Abstract
The synthesis of composites of nylon-6 by cationic polymerisation of the monomer in the presence of fibre fillers such as polyacrylonitrile roving, carbon fibres or basalt fibres, or of dispersed particle fillers such as carbon, heat-expanded graphite, or magnetic neodymium-iron-boron alloy powder was investigated. The products were characterised by molecular weight, melting or softening temperature and TGA, and the results are discussed in terms of heat stability. 4 refs. (Article translated from Plasticheskie Massy, No.1, 2008, pp.16-17)
Title: MODIFICATION OF MAGNETIC POWDER-FILLED PLASTICS BASED ON A NEODYMIUM-IRON-BORON INTERMETALLIC ALLOY
Page Range: p.T/7-T/9
Author(s): Artemenko S E; Kononenko S G; Levkina N L; Artemenko A A; Samylkin A M
File size: 69K
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Issue Year: ipsat
Volume: 36
Issue No: No.5
Abstract
The preparation of composites of phenol-formaldehyde resin with three different grades of neodymium-iron-boron magnetic intermetallic alloy powder via in-situ polycondensation or blending processes and their curing in the presence of a magnetic or electric field and of additives such as magnesium oxide, iron(III) oxide or nickel chloride is described. The products were characterised by density, magnetic properties and interlayer shear strength, and the effects of magnetic alloy grade, processing and curing conditions and additives on the characteristics of the products are discussed. 3 refs. (Article translated from Plasticheskie Massy, No.1, 2008, pp.17-19)
Title: MODERN APPROACHES TO THE RECYCLING OF POLYETHYLENE TEREPHTHALATE
Page Range: p.T/11-T/13
Author(s): Ovchinnikova G P; Abdullaev R A; Artemenko S E
File size: 57K
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Issue Year: ipsat
Volume: 36
Issue No: No.5
Abstract
The reprocessing of recycled poly(ethylene terephthalate) was investigated by a number of methods including plasticisation with dibutyl phthalate or poly(ethylsiloxane), addition of basalt wool as a mixture of dispersed filler and reinforcing fibres, polymer chain extension with epoxy-bisphenol A resins and chemical depolymerisation by treatment with sodium hydroxide to give terephthalic acid and ethylene glycol. The effects of reprocessing on the properties of the products, such as molecular weight, mechanical properties, viscosity and melting temperature, are discussed in terms of their potential applications. 3 refs. (Article translated from Plasticheskie Massy, No.1, 2008, pp.27-28)
Title: USE OF AGRICULTURAL WASTE MATERIALS FOR THE FILLING OF POLYMERS
Page Range: p.T/15-T/18
Author(s): Sveshnikova E S; Chelysheva I A; Panova L G
File size: 132K
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Issue Year: ipsat
Volume: 36
Issue No: No.5
Abstract
The use of agricultural waste materials derived from the threshing of millet (WTM) and of buckwheat WTB), subjected to heat treatment at different temperatures and grinding and characterised by optical microscopy, pyrolysis, FTIR and density, as fillers for polymers was investigated. The effects of treated WTM and WTB on the properties of low-flammability low density polyethylene composites were studied by measurements of tensile strength, elongation at break, impact strength, volume resistivity, Brinell hardness and weight loss during combustion in air and the results are discussed. 2 refs. (Article translated from Plasticheskie Massy, No.1, 2008, pp.29-31)
Title: PHOTOOXIDATION OF POLYHYDROXYBUTYRATE
Page Range: p.T/19-T/22
Author(s): Ivanov V B; Khavina E Y; Voinov S I; Ol'Khov A A
File size: 88K
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Issue Year: ipsat
Volume: 36
Issue No: No.5
Abstract
The UV irradiation in air of thin films of poly(3-hydroxybutyrate)(PHB), prepared by solvent casting or hot pressing techniques, was investigated by oxygen absorption, FTIR and UV-visible spectroscopy measurements, and the activation energy of photooxidation was determined. The effects of PHB on the biodegradation, thermal degradation and photodegradation of polyethylene (PE) in blends of PHB and PE are discussed in terms of the mechanism of degradation of PHB. 8 refs. (Article translated from Plasticheskie Massy, No.1, 2008, pp.31-33)
Title: THE EFFECT OF FILLERS ON THE KINETICS OF GELATION AND THE PROPERTIES OF MOISTURE-ABSORBING POLYMERIC MATERIALS
Page Range: p.T/23-T/26
Author(s): Uspenskaya M V; Sirotinkin N V; Bondareva E A
File size: 62K
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Issue Year: ipsat
Volume: 36
Issue No: No.5
Abstract
The synthesis of composite acrylate hydrogels by radical polymerisation of acrylic acid with different degrees of neutralisation in the presence of N,N'-methylenebisacrylamide as crosslinking agent, ammonium persulphate-tetramethylethylenediamine as initiator and fullerene or aluminosilicate glass spheres as fillers, is described. The effects of filler concentration on the kinetics of gelation and on the degree of swelling of the composites were investigated and the results are discussed. 16 refs. (Article translated from Plasticheskie Massy, No.1, 2008, pp.38-40)
Title: PROPERTIES OF POLYMER COMPOSITES FILLED WITH ZIRCONIUM DIOXIDE NANOPOWDERS
Page Range: p.T/27-T/30
Author(s): Beloshenko V A; Borzenko A P; Glazunova V A; Konstantinova T E; Yakovleva R A; Popov Y V
File size: 144K
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Issue Year: ipsat
Volume: 36
Issue No: No.5
Abstract
The synthesis and curing of composites of epoxy resin with various proportions of zirconium dioxide nanoparticles prepared by different processes and differing in chemical composition, particle size (XRD), BET specific surface area and degree of aggregation (SEM), is described. The composites were characterised by heat shrinkage, microhardness, tensile testing, SEM analysis of fracture surfaces, and DSC, and the effects of filler type and content on deformation properties of the composites are discussed. 9 refs. (Article translated from Plasticheskie Massy, No.1, 2008, pp.40-43)
Title: MULTILAYER SHEETS ON A POLYAMIDE BASE
Page Range: p.T/31-T/34
Author(s): Vlasov S V; Shcherbakova E A; Romanov R V; Kuleznev V N
File size: 79K
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Issue Year: ipsat
Volume: 36
Issue No: No.5
Abstract
The production by contact heat welding of multilayer laminated films comprising a base layer of polyamide-12 coated with an adhesive primer and layers of low-melting polyethylene and their subsequent uniaxial orientation elongation at different temperatures is described. The films were characterised by birefringence, tensile strength, elongation at break and separation resistance, and the effects of processing conditions on mechanical properties of the films are discussed. 8 refs. (Article translated from Plasticheskie Massy, No.1, 2008, pp.46-49)
Title: THE INFLUENCE OF FORMATION OF POLYVINYL CHLORIDE FROM LATEX ON THE PROPERTIES OF POLYMER-PLASTICISER DISPERSIONS
Page Range: p.T/35-T/38
Author(s): Bogdanova Y N; Navrotskii A V; Navrotskii V A
File size: 67K
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Issue Year: ipsat
Volume: 36
Issue No: No.5
Abstract
The development of a process for the formation of poly(vinyl chloride)(PVC) from latex via coagulation by cationic polyelectrolytes, based on destabilisation of latex particles by neutralisation of the protective layer formed by emulsifiers leading to precipitation of polymer particles, is described. The products were characterised by density, XRD (crystallinity), optical microscopy (swelling with dioctyl phthalate and dibutylphenyl phosphate plasticisers) and rheological properties of mixtures of PVC and plasticisers, and the effects of the method of formation of PVC on the properties of polymer-plasticiser dispersions are discussed. 17 refs. (Article translated from Plasticheskie Massy, No.2, 2008, pp.10-12)
Title: A STUDY OF THE RADIOLYSIS OF POLYETHYLENE AND THE POLYETHYLENE MATRIX IN GLASS-FIBRE-REINFORCED PLASTIC
Page Range: p.T/39-T/42
Author(s): Smirnov Y N; Ol'Khov Y A; Allayarov S R; Lesnichaya V A; Belov G P
File size: 73K
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Issue Year: ipsat
Volume: 36
Issue No: No.5
Abstract
The radiolysis of films of polyethylene (PE) and of the PE matrix of glass fabric-reinforced PE composite laminates by cobalt-60 gamma irradiation was investigated by tensile strength, tensile strain, elastic modulus and thermomechanical spectroscopy measurements before and after radiolysis. The effects of radiation dose on tensile strength, flexural strength, degree of crystallinity, glass transition temperature and number-average molecular weight of intercrosslink chains were studied and the results are discussed in terms of chemical and physical modifications of the polymer matrix. 17 refs. (Article translated from Plasticheskie Massy, No.2, 2008, pp.12-15)
Title: ASSESSING THE CHARACTERISTIC TEMPERATURES OF THERMAL BREAKDOWN OF POLYMERS BY THERMAL ANALYSIS METHODS
Page Range: p.T/43-T/46
Author(s): Tuinova T G; Yakushev R M
File size: 84K
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Issue Year: ipsat
Volume: 36
Issue No: No.5
Abstract
The development of a method to predict the characteristic temperatures of thermal breakdown of polymers by thermal analysis techniques such as DTA, TG or DTG combined with previously published equations is described. The method was validated by comparison of calculated values at various heating rates with experimental data reported in the literature for a range of polymers including polycarbonate, polyimide and polyoxadiazole, and polysulphide at different degrees of conversion. 9 refs. (Article translated from Plasticheskie Massy, No.2, 2008, pp.15-17)
Title: HEAT-STABLE POLYMERS BASED ON EPOXY OLIGOMERS AND AROMATIC DIESTER DISULPHIMIDES
Page Range: p.T/47-T/49
Author(s): Aslanov T A; Mamedli U M; Ishchenko N Y; Dzhumaeva M N; Guliev A M
File size: 76K
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Issue Year: ipsat
Volume: 36
Issue No: No.5
Abstract
The synthesis of diester disulphimides via transesterification of dimethyl 2-sulphoterephthalate and dimethyl 4-sulphoisophthalate with glycols, and their characterisation by elemental analysis and FTIR, is described. The curing of an epoxy resin using the diester disulphimides as curing agents was investigated by DTA, TGA, tensile stress, compressive stress, flexural stress, elongation at break, Vicat softening point and degree of curing, and the curing and thermal stability are discussed in comparison with those for epoxy resins based on monomers derived by reaction of the diester disulphimides with epichlorohydrin. 7 refs. (Article translated from Plasticheskie Massy, No.2, 2008, pp.20-22)
Title: SYNTHESIS AND MECHANICAL PROPERTIES OF GRADIENT POLYURETHANE ISOCYANURATE POLYMER COMPOSITES BASED ON OLIGOTETRAMETHYLENE GLYCOL
Page Range: p.T/51-T/55
Author(s): Luchkina L V; Petunova M D; Askadskii A A; Kazantseva V V; Kovriga O V; Afonicheva O V
File size: 118K
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Issue Year: ipsat
Volume: 36
Issue No: No.5
Abstract
The synthesis via polycyclotrimerisation and migration polymerisation of gradient polyurethane isocyanurate polymeric materials based on an oligooxytetramethylene glycol, 2,4-toluene diisocyanate and a diamine, di(3-chloro-4-aminophenyl)methane, was investigated by FTIR and potentiometric titration. The products were characterised by Brinell hardness, elastic modulus, impact strength and flexural strength, and the effects of the proportion of polyurethane and polyisocyanurate components on the mechanical properties of the products are discussed. 10 refs. (Article translated from Plasticheskie Massy, No.2, 2008, pp.22-25)
Title: A STUDY OF THE PROPERTIES OF POLYVINYLIDENE FLUORIDE MODIFIED WITH NICKEL NANOPARTICLES
Page Range: p.T/57-T/62
Author(s): Tkachenko S N; Gefle O S; Lebedev S M
File size: 223K
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Issue Year: ipsat
Volume: 36
Issue No: No.5
Abstract
The preparation of nanocomposites of poly(vinylidene fluoride) with various proportions of spherical nickel nanoparticles, and their characterisation by DSC, FTIR, polarised optical microscopy, dielectric permittivity and dielectric loss tangent, and activation energy of the polarisation process, is described. The effects of filler content on the heat stability, degree of crystallinity and supermolecular structure of the polymer were investigated and the results are discussed in terms of optimisation of properties. 11 refs. (Article translated from Plasticheskie Massy, No.2, 2008, pp.28-32)