Influences of density and flake size on the mechanical properties of flexible graphite

Yang Leng; Jialin Gu; Wenquan Cao; Tong Yi Zhang

doi:10.1016/S0008-6223(97)00196-6

Influences of density and flake size on the mechanical properties of flexible graphite

Yang Leng^*
, Jialin Gu
, Wenquan Cao
, Tong Yi Zhang

^*Corresponding author for this work

Department of Mechanical and Aerospace Engineering

Research output: Contribution to journal › Journal Article › peer-review

71 Citations (Scopus)

Abstract

The mechanical properties of flexible graphite sheets made by exfoliated graphite flakes have been investigated in term of the density changes and the flake size variation. The fracture toughness of flexible graphite sheets has been characterized using the concept of essential fracture work (w_e). The experimental results indicate that both tensile strength and the fracture toughness monotonically increase, but the sheet flexibility decreases with the density of flexible graphite sheets and the size of pristine graphite flakes. A compromise combination of compression and recovery can be achieved in the density range of 1.0-1.4 g cm^-3. The flake size has little effects on both compression and recovery. A micro-disc model has been developed based on friction between the interlocked micro-discs in which air is encapsulated. This model interprets the effects of the density and flake size on certain mechanical properties of the flexible graphite sheets.

Original language	English
Pages (from-to)	875-881
Number of pages	7
Journal	Carbon
Volume	36
Issue number	7-8
DOIs	https://doi.org/10.1016/S0008-6223(97)00196-6
Publication status	Published - 1998

Keywords

A. Intercalation compounds
D. elastic properties
D. fracture
D. mechanical properties
D. microstructure

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10.1016/S0008-6223(97)00196-6

Cite this

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title = "Influences of density and flake size on the mechanical properties of flexible graphite",

abstract = "The mechanical properties of flexible graphite sheets made by exfoliated graphite flakes have been investigated in term of the density changes and the flake size variation. The fracture toughness of flexible graphite sheets has been characterized using the concept of essential fracture work (we). The experimental results indicate that both tensile strength and the fracture toughness monotonically increase, but the sheet flexibility decreases with the density of flexible graphite sheets and the size of pristine graphite flakes. A compromise combination of compression and recovery can be achieved in the density range of 1.0-1.4 g cm-3. The flake size has little effects on both compression and recovery. A micro-disc model has been developed based on friction between the interlocked micro-discs in which air is encapsulated. This model interprets the effects of the density and flake size on certain mechanical properties of the flexible graphite sheets.",

keywords = "A. Intercalation compounds, D. elastic properties, D. fracture, D. mechanical properties, D. microstructure",

author = "Yang Leng and Jialin Gu and Wenquan Cao and Zhang, \{Tong Yi\}",

year = "1998",

doi = "10.1016/S0008-6223(97)00196-6",

language = "English",

volume = "36",

pages = "875--881",

journal = "Carbon",

issn = "0008-6223",

publisher = "Elsevier Ltd",

number = "7-8",

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TY - JOUR

T1 - Influences of density and flake size on the mechanical properties of flexible graphite

AU - Leng, Yang

AU - Gu, Jialin

AU - Cao, Wenquan

AU - Zhang, Tong Yi

PY - 1998

Y1 - 1998

N2 - The mechanical properties of flexible graphite sheets made by exfoliated graphite flakes have been investigated in term of the density changes and the flake size variation. The fracture toughness of flexible graphite sheets has been characterized using the concept of essential fracture work (we). The experimental results indicate that both tensile strength and the fracture toughness monotonically increase, but the sheet flexibility decreases with the density of flexible graphite sheets and the size of pristine graphite flakes. A compromise combination of compression and recovery can be achieved in the density range of 1.0-1.4 g cm-3. The flake size has little effects on both compression and recovery. A micro-disc model has been developed based on friction between the interlocked micro-discs in which air is encapsulated. This model interprets the effects of the density and flake size on certain mechanical properties of the flexible graphite sheets.

AB - The mechanical properties of flexible graphite sheets made by exfoliated graphite flakes have been investigated in term of the density changes and the flake size variation. The fracture toughness of flexible graphite sheets has been characterized using the concept of essential fracture work (we). The experimental results indicate that both tensile strength and the fracture toughness monotonically increase, but the sheet flexibility decreases with the density of flexible graphite sheets and the size of pristine graphite flakes. A compromise combination of compression and recovery can be achieved in the density range of 1.0-1.4 g cm-3. The flake size has little effects on both compression and recovery. A micro-disc model has been developed based on friction between the interlocked micro-discs in which air is encapsulated. This model interprets the effects of the density and flake size on certain mechanical properties of the flexible graphite sheets.

KW - A. Intercalation compounds

KW - D. elastic properties

KW - D. fracture

KW - D. mechanical properties

KW - D. microstructure

UR - https://www.webofscience.com/wos/woscc/full-record/WOS:000074773400006

UR - https://openalex.org/W2011156844

U2 - 10.1016/S0008-6223(97)00196-6

DO - 10.1016/S0008-6223(97)00196-6

M3 - Journal Article

SN - 0008-6223

VL - 36

SP - 875

EP - 881

JO - Carbon

JF - Carbon

IS - 7-8

ER -

Influences of density and flake size on the mechanical properties of flexible graphite

Abstract

Keywords

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