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.
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 | |
| Publication status | Published - Jul 2018 |
Keywords
- Cure
- Thermal properties
- Polymer-matrix composites (PMCs)
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Zhang, Y., Shen, YC., Shi, K., Wang, TW., & Harkin-Jones, E. (2018). Constructing a filler network for thermal conductivity enhancement in epoxy composites via reaction-induced phase separation. Composites Part A: Applied Science and Manufacturing, 110, 62-69. https://doi.org/10.1016/j.compositesa.2018.04.009