Experimental analysis of the effect of carbon nanoparticles with different geometry on the appearance of anisotropy of mechanical properties in elastomeric composites

Mokhireva, Kseniia A.; Свистков, А. Л.; Solodko, V. N.; Komar, L. A.; Stöckelhuber, Klaus Werner

doi:10.1016/j.polymertesting.2017.01.007

Cited by 38 publications

(19 citation statements)

References 15 publications

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“…Due to their viscoelastic nature, rubbers experience hysteresis loss upon cyclic loading. The first several cycles always show higher hysteresis loss due to the Mullins effect related to the slipping and rearrangement of the rubber chains along each other and the filler particles . As shown in Table , VHB showed the highest hysteresis loss, which can be related to the lack of crosslinking points which could prevent the irreversible flow and rearrangement of the polymer chains upon cyclic loading.…”

Section: Resultsmentioning

confidence: 94%

“…Although NR–ND composites have been discussed in the literature, dielectric properties of such composites have not been extensively studied. As for mechanical losses, addition of NDs can have potential in elastomer composite applications due to the reduced hysteresis of ND‐filled rubbers, which is has been found to be much lower than for other carbon‐based fillers . Therefore, NDs can have potential in elastomer composites applied for energy harvesting.…”

Section: Introductionmentioning

confidence: 99%

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Material‐related losses of natural rubber composites with surface‐modified nanodiamonds

Shakun

Sarlin

Vuorinen

2019

J of Applied Polymer Sci

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Dielectric elastomer generators (DEGs) offer a solution for the growing sustainable energy needs. Despite the active research on DEGs, currently used materials do not possess the required properties to achieve the full potential performance of such generators, thus, limiting an economical attractiveness of DEGs. Therefore, tailor-made materials for DEGs are in demand. Customizing the natural rubber recipe allows both dielectric and mechanical loss reduction, while the addition of nanodiamonds lowers the stress relaxation and hysteresis loss even further. The effect is most pronounced after chemical modification of nanodiamonds with silane coupling agents. Moreover, such modified nanodiamonds show less dielectric losses compared to unmodified nanodiamonds and allow reducing the dynamic loss tangent of the compound.Some research has been done on filled NR, showing the effect of filler modification on dielectric behavior, which usually increased Additional Supporting Information may be found in the online version of this article.

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Section: Resultsmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Material‐related losses of natural rubber composites with surface‐modified nanodiamonds

Shakun

Sarlin

Vuorinen

2019

J of Applied Polymer Sci

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“…Porosity is closely related to the properties of composite materials, and it will reduce the mechanical properties of composite materials, such as interlayer shear strength, tensile and compressive strength, transverse bending strength, and fatigue strength. Even small porosity can have a significant impact on the life of composites [15][16][17][18]. The shape, size and distribution of the pores of the composites are also different and very complex due to the different manufacturing processes of GRANs.…”

Section: Introductionmentioning

confidence: 99%

Effect of Pore Defects on Mechanical Properties of Graphene Reinforced Aluminum Nanocomposites

Shi

Zuo

et al. 2020

Metals

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Pore defects have an important effect on the mechanical properties of graphene reinforced aluminum nanocomposites. The simulation study found that the pores affect the stress distribution in the matrix of the composite. Along the stretching direction, the larger stress appears on both sides of the pore, which is the source of potential cracks. It results in a sharp decrease in the mechanical properties of the composite. The higher the porosity, the greater the tendency of pore aggregation, and the risk of material failure is higher. The stress distribution in the matrix becomes more uneven as the pore size increases, and the large strain area around the pores also increases. Composites with circular pores have a higher strength than other irregularly shaped pores. The failure mode might be pore cracking, while composites with other shape pores are more prone to interface detachment. The simulation value of the stress-strain of the composite material is in good agreement with the experimental value, but the finite element simulation value is larger than the experimental value.

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“…Примером могут служить работы, связанные с изучением свойств эластомеров, заполненных такими наполнителями, как сажа, углеродные нанотрубки, наноалмазы, различные минеральные частицы (монтмориллонит, палыгорскит, шунгит и т.д.) [1][2][3][4][5][6][7][8]. Одновременно с экспериментальными ведутся и теоретические исследованиями по структурному моделированию физико-механических свойств материалов с учетом особенностей внутреннего строения и процессов на микро-и наноуровне [9][10][11][12][13][14][15] и др.…”

Section: Introductionunclassified

Modeling of Strands Formation in Elastomeric Composites

2019

PNRPU MB

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Filling of rubbers with active fillers significantly improves their strength and deformation properties. One of the possible explanations of this phenomenon is presented in this article. It is based on a well-known fact that for large deformations of the elastomer binder filled in the gaps between neighboring filler particles is in the stress-strain state close to uniaxial tension. In this case, most of the polymer chains are oriented along the axis connecting the centers of inclusions. The paper suggests that the strength of the matrix in such a state (due to orientation) should be higher in comparison with other possible states with the same strain intensity. An dequate strength criterion was developed to account for this effect. The results of simulating the elastomeric binder destruction around two absolutely solid spherical inclusions are presented. A model of an incompressible hyperelastic material whose properties are given by a neo-Hookean potential was used to describe the properties of an elastomeric matrix. In the framework of computer experiments it was shown that when the system is deformed, the binder breaks should appear not in the gap between the filler particles, but at some distance from it. The elastic bond between the inclusions remains. A polymeric fiber (nanostrand) is formed between the inclusions, capable of withstanding higher tensile loads. It is known that layers with other physical-mechanical properties can be formed near the filler particles. Solutions are obtained for the problems in which the matrix in the gaps between the filler particles has a higher modulus to evaluate the possible influence of such layers. It is that this factor has virtually no effect on the emergence and formation of strands.

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Experimental analysis of the effect of carbon nanoparticles with different geometry on the appearance of anisotropy of mechanical properties in elastomeric composites

Cited by 38 publications

References 15 publications

Material‐related losses of natural rubber composites with surface‐modified nanodiamonds

Material‐related losses of natural rubber composites with surface‐modified nanodiamonds

Effect of Pore Defects on Mechanical Properties of Graphene Reinforced Aluminum Nanocomposites

Modeling of Strands Formation in Elastomeric Composites

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