Thermal conductivity and mechanical properties of expanded graphite

Afanasov, I. M.; Савченко, Д. В.; Ionov, S. P.; Rusakov, D. A.; Seleznev, A. N.; Авдеев, В. В.

doi:10.1134/s0020168509050057

Cited by 53 publications

(34 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Graphite possesses a very high modulus along its plane, and has excellent electrical conductivity [10]. These useful properties, and its low cost compared to CNTs, make it a useful filler for conducting polymer composites for industrial applications.…”

Section: Introductionmentioning

confidence: 98%

Effect of surfactant and radiation treatment on the morphology and properties of PP/EG composites

et al. 2015

View full text Add to dashboard Cite

The effects of surfactant and electron beam (EB) radiation treatment on the morphology and properties of polypropylene (PP)/expanded graphite (EG) composites were investigated. Surfactant treatment and sonication of EG before mixing with PP significantly influenced the morphologies of the composites, and the modification of EG with sodium dodecyl sulphate (SDS) had a strong negative influence on the electrical conductivities of these composites. The electrical percolation concentration is shifted from 5 to 6 wt% filler to about 10 wt% filler in the presence of SDS. The melting and crystallization temperatures of PP in the composites were not affected by surfactant or EB radiation treatment. There were small differences in PP crystallinity, depending on the type and combination of treatments. The filler particles acted as nucleating agents and the crystallization temperatures shifted to higher temperatures. The thermal stability of PP was significantly higher after irradiation, and improved even further for the samples containing EG, but the presence of EG had little influence on the thermal stabilities of the non-irradiated composites. For both non-irradiated and irradiated composites the maximum tensile stress and elongation at break values are lower than the neat matrix, while the tensile modulus increased significantly.

show abstract

Section: Introductionmentioning

confidence: 98%

Effect of surfactant and radiation treatment on the morphology and properties of PP/EG composites

et al. 2015

View full text Add to dashboard Cite

show abstract

“…The mesh size of the CEG filler was 0.1 mm. The numerical issue The equation motion (8) was solved by the Newton-Raphson method. The numerical model of the gasket and plates as well as the boundary conditions is presented in Fig.…”

Section: Optimization Formulationmentioning

confidence: 99%

“…EG is widely used as an addition to various types of nano-composites [2][3][4][5][6][7]. It inherited lots of favorable features of NG, i.e., it exhibits high chemical and thermal resistance [8,9]. Paper [10] presents an innovative investigation method and test results concerning elastic properties of EG.…”

Section: Introductionmentioning

confidence: 99%

Adaptation of a highly compressible elastomeric material model to simulate compressed expanded graphite and its application in the optimization of a graphite-metallic structure

Jaszak

2020

J Braz. Soc. Mech. Sci. Eng.

View full text Add to dashboard Cite

The paper presents simulations of mechanical properties of compressed expanded graphite. To model the stress and strain states of compressed expanded graphite, a hyperelastic material model formulated by the Blatz-Ko was adapted. The idea of using this model resulted from the assumptions that compressed expanded graphite exhibits similar mechanical properties to polyurethane foam with high density. The material constant of the Blatz-Ko model was determined by numerical calculations where deformation energy equation was parameterized with the shear modulus. Such material model used in a compressed expanded graphite simulation was experimentally validated. Subsequently, the Blatz-Ko model was used in a numerical simulation of the graphite-metallic structure in the form of a spiral wound gasket which is composed of metallic and elastic tapes. This structure was subjected to an optimization process which included the reduction of stress in the elastic graphite tape obtaining the appropriate axial stiffness of the gasket. In the final stage, the optimal design of the gasket was experimentally tested. The experimental results were compared with the data obtained numerically, which allowed to verify the adapted material model and boundary conditions of the numerical gasket model.

show abstract

“…Expanded graphite (EG), as a lightweight and highly porous material, has emerged as an intriguing material for potential applications in adsorbent [14], fuel cell [15] and sensor [16] due to its unique mechanical and electronic properties [17]. Recently, EG was used as electrode materials for the determination of catechol [18], Sudan I [19], Sunset yellow [20], Ponceau-4R [21], simultaneous determination of 4-chlorophenol and oxalic acid [22], and simultaneous determination of Ponceau-4R and Tartrazine [23].…”

Section: Introductionmentioning

confidence: 99%

Simultaneous determination of Ponceau-4R and Allura Red in soft drinks based on the ionic liquid modified expanded graphite paste electrode

Zhang

Wang

et al. 2015

International Journal of Environmental Analytical Chemistry

View full text Add to dashboard Cite

Thermal conductivity and mechanical properties of expanded graphite

Cited by 53 publications

References 16 publications

Effect of surfactant and radiation treatment on the morphology and properties of PP/EG composites

Effect of surfactant and radiation treatment on the morphology and properties of PP/EG composites

Adaptation of a highly compressible elastomeric material model to simulate compressed expanded graphite and its application in the optimization of a graphite-metallic structure

Simultaneous determination of Ponceau-4R and Allura Red in soft drinks based on the ionic liquid modified expanded graphite paste electrode

Contact Info

Product

Resources

About