Abstract
The present study aimed at investigating the influence of ZnO-RGO nanofiller on the electrical and dynamic mechanical properties of phenol formaldehyde (PF) resin. The nanocomposites were prepared by solution mixing method followed by compression molding and nanofillers were synthesized by refluxing graphene oxide with zinc acetate dihydrate in DMF. The maximum value of the dielectric constant is observed for composites with 1 wt% ZnO-RGO content. A comparative study on the experimental and theoretical values of effective dielectric constant was done by Maxwell Garnet equation. The theoretical modeling of DC conductivity of the nanocomposites was done by the Bueche, Scarisbrick, and Rahaman modeling. The effect of ZnO-RGO on the viscoelastic properties of PF was analyzed with DMA. About 28% increase in storage modulus is observed with the addition of 0.12 wt% ZnO-RGO. The degree of entanglement, reinforcement efficiency factor, and cross-link density were calculated from DMA analysis to understand the interaction between PF and ZnO-RGO. The nature of the drawn Cole-Cole plot shows the existence of heterogeneity in PF/ZnO-RGO nanocomposites.
| Original language | English |
|---|---|
| Article number | 107934 |
| Journal | Diamond and Related Materials |
| Volume | 108 |
| DOIs | |
| Publication status | Published - Oct 2020 |
| Externally published | Yes |
Keywords
- DC conductivity
- Phenol formaldehyde
- Viscoelastic property
- ZnO-RGO
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- General Chemistry
- Mechanical Engineering
- General Physics and Astronomy
- Materials Chemistry
- Electrical and Electronic Engineering