Polymer nanocomposites for tribotechnical applications

Охлопкова, А. А.; Попов, С. Н.; Sleptzova, S. A.; Петрова, П. Н.; Avvakumov, E. G.

doi:10.1007/s10947-006-0113-2

Cited by 9 publications

(5 citation statements)

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“…These decay processes are investigated as a function of temperature. The application of polymer nanocomposites as an electret is the promising area of research 1–3. Electrets can store the charge for long time and will especially apply as a supercapacitor, piezosensor, pyro sensor, etc 4–10.…”

Section: Introductionmentioning

confidence: 99%

Investigation of optical and thermally stimulated properties of SiO₂ nanoparticles‐filled polycarbonate

Rathore

Gaur

Singh

2012

J of Applied Polymer Sci

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Polycarbonate nanocomposite containing silicon oxide nanoparticles average size of 5 nm at different weight ratio has been prepared by solution mixing method. The dispersion of nanoparticles in polymer matrix was studied by transmission electron microscopy (TEM). The optical and thermally stimulated behavior of nanocomposites were analyzed by energy dispersive X-ray spectra (EDX), X-ray diffraction pattern (XRD), UV-vis spectroscopy, differential scanning calorimetry (DSC), and thermally stimulated discharge current (TSDC). TEM images show the dispersion and size of the nanoparticles, however, EDX indicate the presence of SiO 2 on the surface of the nanocomposite film. An XRD result reveals that the crystallinity increases with increase in concentration of SiO 2 nanoparticles in polymer matrix. The direct and indirect optical energy band gaps decreased and number of carbon atom increased with concentration of SiO 2 nanoparticles. We have observed that the increase of SiO 2 nanoparticles in PC significantly reduces the refractive index. DSC and TSDC show that glass transition temperature increases according to SiO 2 weight ratio. The TSDC of nanocomposites samples could be understand in terms of non-Debye theory of charge relaxation and co-tunneling mechanism of charge transport. V C 2012 Wiley Periodicals, Inc.J Appl Polym Sci 126: [960][961][962][963][964][965][966][967][968] 2012

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Section: Introductionmentioning

confidence: 99%

Investigation of optical and thermally stimulated properties of SiO₂ nanoparticles‐filled polycarbonate

Rathore

Gaur

Singh

2012

J of Applied Polymer Sci

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“…This is typical of conventional composites, when the areas of contact with the segments of the macromolecule between the polymer macromolecule and the microdimensional filler are limited by the projections or roughness of the filler. The relaxing ability of matrix macromolecules decreases due to internal stresses [9,10], i.e., these results are due to agglomeration of the filler. Tables I and II show that the modulus of elasticity in almost all composites is higher than that of the original PTFE.…”

Section: Resultsmentioning

confidence: 99%

Influence of Layered Silicates 1:1 on PTFE Properties

Laukkanen¹,

Sleptsova²,

Tarasov³

et al. 2019

Proceedings of the International Symposium "Engineering and Earth Sciences: Applied and Fundamental Research" Dedicated to the

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The results of the study of physical and mechanical and tribological properties of PTFE-based composites with addition of serpentine and kaolin are described. Magnesium spinel was used as a functional additive. Improvement of the characteristics of the material due to mechanical activation of the fillers increasing adhesive interaction between components of the composite material was identified. Methods of capillary electrophoresis and atomic adsorption spectroscopy revealed an increase in the number of active cations due to mechanical activation. The IR-spectroscopy identified that the cause of an increase in the number of cations is destruction of octahedral networks of fillers subject to mechanical activation. It is assumed that high coordination activity of aluminum ions which are part of magnesium and kaolin spinels relative to the fluorine atoms of PTFE macromolecules and oxygen atoms on the surface of mechanically activated layered silicates, intensifies interfacial interaction.

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“…It is known [10,11] that an increase in durability induced by the addition of any filler directly depends on the degree of composite structuralization. Therefore, atomic force and electron microscopy, small and large angle X-ray scattering methods were employed to study the PTFE structure formation processes under the action of liquid lubricant components and solid-phase zeolite particles.…”

Section: Methodsmentioning

confidence: 99%

“…Thus, oil components, increasing the growth rate of sperulites and preventing their aggregation into more complex structures such as ribbons and planes, result in that crystallization finishes by the formation of a fine spherulitic structure with distinct interfaces. The fine spherulitic structure provides lower friction coefficients and higher wear resistance of PCM [10,11]. An increase in the total number of spherulitic forms is explained by that the liquid lubricant components act as crystallization initiators along with solid phase filler particles.…”

Section: Methodsmentioning

confidence: 99%

Features of the structure formation of polymer composites modified by a liquid lubricant

2011

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Polymer nanocomposites for tribotechnical applications

Cited by 9 publications

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Investigation of optical and thermally stimulated properties of SiO₂ nanoparticles‐filled polycarbonate

Investigation of optical and thermally stimulated properties of SiO₂ nanoparticles‐filled polycarbonate

Influence of Layered Silicates 1:1 on PTFE Properties

Features of the structure formation of polymer composites modified by a liquid lubricant

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Polymer nanocomposites for tribotechnical applications

Cited by 9 publications

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Investigation of optical and thermally stimulated properties of SiO2 nanoparticles‐filled polycarbonate

Investigation of optical and thermally stimulated properties of SiO2 nanoparticles‐filled polycarbonate

Influence of Layered Silicates 1:1 on PTFE Properties

Features of the structure formation of polymer composites modified by a liquid lubricant

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Investigation of optical and thermally stimulated properties of SiO₂ nanoparticles‐filled polycarbonate

Investigation of optical and thermally stimulated properties of SiO₂ nanoparticles‐filled polycarbonate