Effect of hydrophilic graphite flake on thermal conductivity and fracture toughness of basalt fibers/epoxy composites

Seong Hwang Kim; Young Jung Heo; Mira Park; Byung Gak Min; Kyong Yop Rhee; Soo Jin Park

doi:10.1016/j.compositesb.2018.07.022

Effect of hydrophilic graphite flake on thermal conductivity and fracture toughness of basalt fibers/epoxy composites

Seong Hwang Kim, Young Jung Heo, Mira Park, Byung Gak Min, Kyong Yop Rhee, Soo Jin Park

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

Abstract

In this work, we fabricated basalt fiber-reinforced epoxy composites using natural graphite flakes. The composites were reinforced with various concentrations of natural graphite flakes. Natural graphite flakes significantly enhanced the mechanical properties of the composites, such as the critical stress intensity factor (K_IC) and critical strain energy release rate (G_IC). In particular, basalt fiber-reinforced composites containing 20 wt% of natural graphite flakes exhibited highest mechanical behavior compared. The fracture toughness mechanisms were illustrated using a crack theory based on morphology analyses of fracture surfaces. In addition, the composites exhibited high thermal stability and thermal conductivity, attributed to the exceptional thermal stability and thermal conductivity inherent in the natural graphite flakes. We observed a direct linear relationship between thermal conductivity and fracture toughness through certain polar components of surface energy. The natural graphite flake particles improved mechanical and thermal properties by performing a crack pinning role in the epoxy-matrix composites.

Original language	English
Pages (from-to)	9-16
Number of pages	8
Journal	Composites Part B: Engineering
Volume	153
DOIs	https://doi.org/10.1016/j.compositesb.2018.07.022
Publication status	Published - 15 Nov 2018
Externally published	Yes

Keywords

Basalt fibers
Epoxy resins
Fracture toughness
Natural graphite flakes
Surface free energy
Thermal conductivity

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10.1016/j.compositesb.2018.07.022

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title = "Effect of hydrophilic graphite flake on thermal conductivity and fracture toughness of basalt fibers/epoxy composites",

abstract = "In this work, we fabricated basalt fiber-reinforced epoxy composites using natural graphite flakes. The composites were reinforced with various concentrations of natural graphite flakes. Natural graphite flakes significantly enhanced the mechanical properties of the composites, such as the critical stress intensity factor (KIC) and critical strain energy release rate (GIC). In particular, basalt fiber-reinforced composites containing 20 wt\% of natural graphite flakes exhibited highest mechanical behavior compared. The fracture toughness mechanisms were illustrated using a crack theory based on morphology analyses of fracture surfaces. In addition, the composites exhibited high thermal stability and thermal conductivity, attributed to the exceptional thermal stability and thermal conductivity inherent in the natural graphite flakes. We observed a direct linear relationship between thermal conductivity and fracture toughness through certain polar components of surface energy. The natural graphite flake particles improved mechanical and thermal properties by performing a crack pinning role in the epoxy-matrix composites.",

keywords = "Basalt fibers, Epoxy resins, Fracture toughness, Natural graphite flakes, Surface free energy, Thermal conductivity",

author = "Kim, \{Seong Hwang\} and Heo, \{Young Jung\} and Mira Park and Min, \{Byung Gak\} and Rhee, \{Kyong Yop\} and Park, \{Soo Jin\}",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd",

year = "2018",

month = nov,

day = "15",

doi = "10.1016/j.compositesb.2018.07.022",

language = "English",

volume = "153",

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journal = "Composites Part B: Engineering",

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TY - JOUR

T1 - Effect of hydrophilic graphite flake on thermal conductivity and fracture toughness of basalt fibers/epoxy composites

AU - Kim, Seong Hwang

AU - Heo, Young Jung

AU - Park, Mira

AU - Min, Byung Gak

AU - Rhee, Kyong Yop

AU - Park, Soo Jin

PY - 2018/11/15

Y1 - 2018/11/15

N2 - In this work, we fabricated basalt fiber-reinforced epoxy composites using natural graphite flakes. The composites were reinforced with various concentrations of natural graphite flakes. Natural graphite flakes significantly enhanced the mechanical properties of the composites, such as the critical stress intensity factor (KIC) and critical strain energy release rate (GIC). In particular, basalt fiber-reinforced composites containing 20 wt% of natural graphite flakes exhibited highest mechanical behavior compared. The fracture toughness mechanisms were illustrated using a crack theory based on morphology analyses of fracture surfaces. In addition, the composites exhibited high thermal stability and thermal conductivity, attributed to the exceptional thermal stability and thermal conductivity inherent in the natural graphite flakes. We observed a direct linear relationship between thermal conductivity and fracture toughness through certain polar components of surface energy. The natural graphite flake particles improved mechanical and thermal properties by performing a crack pinning role in the epoxy-matrix composites.

AB - In this work, we fabricated basalt fiber-reinforced epoxy composites using natural graphite flakes. The composites were reinforced with various concentrations of natural graphite flakes. Natural graphite flakes significantly enhanced the mechanical properties of the composites, such as the critical stress intensity factor (KIC) and critical strain energy release rate (GIC). In particular, basalt fiber-reinforced composites containing 20 wt% of natural graphite flakes exhibited highest mechanical behavior compared. The fracture toughness mechanisms were illustrated using a crack theory based on morphology analyses of fracture surfaces. In addition, the composites exhibited high thermal stability and thermal conductivity, attributed to the exceptional thermal stability and thermal conductivity inherent in the natural graphite flakes. We observed a direct linear relationship between thermal conductivity and fracture toughness through certain polar components of surface energy. The natural graphite flake particles improved mechanical and thermal properties by performing a crack pinning role in the epoxy-matrix composites.

KW - Basalt fibers

KW - Epoxy resins

KW - Fracture toughness

KW - Natural graphite flakes

KW - Surface free energy

KW - Thermal conductivity

UR - https://www.scopus.com/pages/publications/85050150810

U2 - 10.1016/j.compositesb.2018.07.022

DO - 10.1016/j.compositesb.2018.07.022

M3 - Article

AN - SCOPUS:85050150810

SN - 1359-8368

VL - 153

SP - 9

EP - 16

JO - Composites Part B: Engineering

JF - Composites Part B: Engineering

ER -

Effect of hydrophilic graphite flake on thermal conductivity and fracture toughness of basalt fibers/epoxy composites

Abstract

Keywords

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