Enhancing Thermomechanical Strength and Thermal Stability of Poly(dicyclopentadiene) Composites through Cost-Effective Fly Ash Reinforcement for Structural and Impact Applications

Author:

Colorado Henry A.1ORCID,Yuan Wei2,Meza Juan3,Jaramillo Franklin4,Gutierrez-Velasquez Elkin I.5

Affiliation:

1. Composites Laboratory, Engineering School, Universidad de Antioquia (UdeA), Calle 70 No. 52-21, Medellín 050010, Colombia

2. Department of Materials Science and Engineering, University of California, Los Angeles, CA 90095, USA

3. Universidad Nacional de Colombia, Calle 75 No 79A 51, Bloque M17, Medellín 050032, Colombia

4. Centro de Investigación, Innovación y Desarrollo de Materiales—CIDEMAT, Facultad de Ingeniería, Universidad de Antioquia (UdeA), Calle 62 No. 52-59, Medellín 050010, Colombia

5. Faculty of Engineering and Basic Sciences, Fundación Universitaria Los Libertadores, Bogotá 111221, Colombia

Abstract

Poly(dicyclopentadiene) (poly-DCPD) is a thermoset with potential for high-performance applications. In this research, epoxy resin was blended with different concentrations of fly ash class F particles at 0.0, 1.0, 10.0, and 50.0 wt.%, aiming to improve its use as a high-volume structural material by decreasing costs and reducing its negative environmental impact through using fly ash particles. A planetary Thinky mixer was used to initially mix the resin with the curing agent, followed by incorporating a Grubbs catalyst. The microstructures were analyzed using scanning electron microscopy (SEM), where particles were found to be homogeneously distributed over the polymer matrix. The thermomechanical behavior was evaluated via curing, compression, dynamic mechanical analysis (DMA), and thermo-gravimetric analysis (TGA). Nanoindentation tests were also conducted. Fly ash was found to decelerate the curing of the resin through the release of calcium ions that enhanced the exothermic reaction.

Publisher

MDPI AG

Subject

Polymers and Plastics,General Chemistry

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