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Open AccessArticle

Influence of Filler Content and Filler Size on the Curing Kinetics of an Epoxy Resin

Institute of Polymer Technology, University Erlangen-Nueremberg, 91058 Erlangen, Germany
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Polymers 2019, 11(11), 1797; https://doi.org/10.3390/polym11111797
Received: 15 October 2019 / Revised: 30 October 2019 / Accepted: 30 October 2019 / Published: 1 November 2019
(This article belongs to the Special Issue Thermosets II)
In this research, the influences of filler content and filler particle size on the flow-hardening behavior were investigated by a measuring mixer. In order to more reliably assess the observed rheological behavior, isothermal differential scanning calorimetry (DSC) measurements were employed to study the curing kinetics of the compounds. The measured data can be fitted well with Kamal-Sourour’s model modified by the diffusion correlation according to Chern and Poehlein. After that, the influence of filler content and size on the kinetic parameters are presented discussed. The results show that the ultimate glass transition temperature is significantly lower for pure epoxy resin (EP) than for compounds filled with surface-treated glass beads, which have an essential effect on the diffusion-controlled reaction at different curing temperatures. For the surface-treated glass beads used in this study, the reaction speed in the early curing stage is accelerated by increasing filler content or decreasing of filler size. In the later curing stage, the reaction speeds of compounds with higher filler content or smaller fillers reduce more quickly. The study of reaction kinetics indicates that the activation energy Ea1, Ea2, the reaction order m, and n are affected differently by varying filler content and size. View Full-Text
Keywords: epoxy molding compound (EMC); reaction kinetics; filler content; filler size; isothermal DSC; Kamal-Sourour’s model; diffusion epoxy molding compound (EMC); reaction kinetics; filler content; filler size; isothermal DSC; Kamal-Sourour’s model; diffusion
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MDPI and ACS Style

Zhao, Y.; Drummer, D. Influence of Filler Content and Filler Size on the Curing Kinetics of an Epoxy Resin. Polymers 2019, 11, 1797. https://doi.org/10.3390/polym11111797

AMA Style

Zhao Y, Drummer D. Influence of Filler Content and Filler Size on the Curing Kinetics of an Epoxy Resin. Polymers. 2019; 11(11):1797. https://doi.org/10.3390/polym11111797

Chicago/Turabian Style

Zhao, Yang; Drummer, Dietmar. 2019. "Influence of Filler Content and Filler Size on the Curing Kinetics of an Epoxy Resin" Polymers 11, no. 11: 1797. https://doi.org/10.3390/polym11111797

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