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Investigation of rheological behavior and dispersion stability of epoxy resin with the addition of graphene-based hybrid additives


Title: Investigation of rheological behavior and dispersion stability of epoxy resin with the addition of graphene-based hybrid additives

Authors: Lynsey Baxter, Kevin Keith, Bhishma Sedai, Ranji Vaidyanathan, Mahdi Ghazizadeh

DOI: 10.33599/nasampe/c.23.0162

Abstract: Graphene-based nanomaterials have been a focus of significant research in the past decade due to their multifunctional attributes. Some of the areas of interest are the role these additives can play in enhancing mechanical, thermal and electrical properties of composites. Despite numerous studies reporting successful incorporation of nanomaterials into thermoset and thermoplastic composites resulting in improved behaviors, an industrially scalable method of dispersion that addresses the agglomeration and stability of these nano-additives once incorporated in a matrix has yet to be identified. This study focuses on the dispersion of easily integratable functionalized graphene-based additives for use in epoxy resin. To achieve this goal, various loadings of nano-additives from 0.1 to 5 % by weight were used to mix with EPON 862 epoxy resin. Once mixed, the quality of dispersion was examined using optical microscopy. To study the stability of mixtures, the dispersion was monitored for 6 days with imaging performed at various times (1 hour to 6 days) post-mixing. In addition to distribution quality and stability, the effects of nano-additive incorporation on the epoxy resin’s viscosity were studied under various weight percent loadings. The results found by varying the loading showed that at lower loading percentages (below 1 percent by weight), the mixture is even, stable with no significant change in viscosity. As the loading of nano-additive increases passed 1 %, the viscosity increase becomes more significant. Overall, the findings of this study show that when industrially made graphene-based nano-additives are incorporated into epoxy resin at less than 1 % loading, a uniform and stable mixture can be achieved with no significant changes in viscosity.

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Conference: CAMX 2023

Publication Date: 2023/10/30

SKU: TP23-0000000162

Pages: 9

Price: $18.00

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