Constructing a filler network for thermal conductivity enhancement in epoxy composites via reaction-induced phase separation

Y Zhang; YC Shen; K Shi; TW Wang; Eileen Harkin-Jones

doi:10.1016/j.compositesa.2018.04.009

Constructing a filler network for thermal conductivity enhancement in epoxy composites via reaction-induced phase separation

Y Zhang, YC Shen, K Shi, TW Wang, Eileen Harkin-Jones

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

25 Citations (Scopus)

70 Downloads (Pure)

Abstract

Diglycidyl ethers of bisphenol-A (DGEBA)/methyl tetrahydrophthalic anhydride/polyethersulphone (PES) blends are prepared as matrix resins for thermally conductive composites using graphite nanoplatelets (GNPs) as the conductive component. The epoxy/PES blends form a network structure via reaction-induced phase separation (RIPS) during the curing process, and the GNPs are selectively localized in the PES phase and at the interface leading to a three-dimensional continuous filler network. With this unique structure, the thermal conductivity of the epoxy/PES/10 wt% GNPs composite is increased to 0.709 W m-1 K-1, which is nearly 3.5 times that of the pure epoxy or a 52% increase compared to the epoxy/GNP composite without PES. In addition, it is found that the impact strength of the composite relative to the unfilled
material is also improved.

Original language	English
Pages (from-to)	62-69
Number of pages	8
Journal	Composites Part A: Applied Science and Manufacturing
Volume	110
Early online date	12 Apr 2018
DOIs	https://doi.org/10.1016/j.compositesa.2018.04.009
Publication status	Published - Jul 2018

Keywords

Cure
Thermal properties
Polymer-matrix composites (PMCs)

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10.1016/j.compositesa.2018.04.009

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title = "Constructing a filler network for thermal conductivity enhancement in epoxy composites via reaction-induced phase separation",

abstract = "Diglycidyl ethers of bisphenol-A (DGEBA)/methyl tetrahydrophthalic anhydride/polyethersulphone (PES) blends are prepared as matrix resins for thermally conductive composites using graphite nanoplatelets (GNPs) as the conductive component. The epoxy/PES blends form a network structure via reaction-induced phase separation (RIPS) during the curing process, and the GNPs are selectively localized in the PES phase and at the interface leading to a three-dimensional continuous filler network. With this unique structure, the thermal conductivity of the epoxy/PES/10 wt% GNPs composite is increased to 0.709 W m-1 K-1, which is nearly 3.5 times that of the pure epoxy or a 52% increase compared to the epoxy/GNP composite without PES. In addition, it is found that the impact strength of the composite relative to the unfilledmaterial is also improved.",

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author = "Y Zhang and YC Shen and K Shi and TW Wang and Eileen Harkin-Jones",

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doi = "10.1016/j.compositesa.2018.04.009",

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T1 - Constructing a filler network for thermal conductivity enhancement in epoxy composites via reaction-induced phase separation

AU - Zhang, Y

AU - Shen, YC

AU - Shi, K

AU - Wang, TW

AU - Harkin-Jones, Eileen

PY - 2018/7

Y1 - 2018/7

N2 - Diglycidyl ethers of bisphenol-A (DGEBA)/methyl tetrahydrophthalic anhydride/polyethersulphone (PES) blends are prepared as matrix resins for thermally conductive composites using graphite nanoplatelets (GNPs) as the conductive component. The epoxy/PES blends form a network structure via reaction-induced phase separation (RIPS) during the curing process, and the GNPs are selectively localized in the PES phase and at the interface leading to a three-dimensional continuous filler network. With this unique structure, the thermal conductivity of the epoxy/PES/10 wt% GNPs composite is increased to 0.709 W m-1 K-1, which is nearly 3.5 times that of the pure epoxy or a 52% increase compared to the epoxy/GNP composite without PES. In addition, it is found that the impact strength of the composite relative to the unfilledmaterial is also improved.

AB - Diglycidyl ethers of bisphenol-A (DGEBA)/methyl tetrahydrophthalic anhydride/polyethersulphone (PES) blends are prepared as matrix resins for thermally conductive composites using graphite nanoplatelets (GNPs) as the conductive component. The epoxy/PES blends form a network structure via reaction-induced phase separation (RIPS) during the curing process, and the GNPs are selectively localized in the PES phase and at the interface leading to a three-dimensional continuous filler network. With this unique structure, the thermal conductivity of the epoxy/PES/10 wt% GNPs composite is increased to 0.709 W m-1 K-1, which is nearly 3.5 times that of the pure epoxy or a 52% increase compared to the epoxy/GNP composite without PES. In addition, it is found that the impact strength of the composite relative to the unfilledmaterial is also improved.

KW - Cure

KW - Thermal properties

KW - Polymer-matrix composites (PMCs)

U2 - 10.1016/j.compositesa.2018.04.009

DO - 10.1016/j.compositesa.2018.04.009

M3 - Article

VL - 110

SP - 62

EP - 69

JO - Composites Part A: Applied Science and Manufacturing

JF - Composites Part A: Applied Science and Manufacturing

SN - 1359-835X

ER -