Work

Comparing the mechanical response of di‐, tri‐, and tetra‐functional resin epoxies with reactive molecular dynamics

Year: 2017

Type: article

Abstract: The influence of monomer functionality on the mechanical properties of epoxies is studied using Molecular Dynamics (MD) with the Reax Force Field (ReaxFF). From deformation simulations, the Young's modulus, yield point, and Poisson's ratio are calculated and analyzed. The results demonstrate an increase in stiffness and yield strength with increasing resin functionality. Comparison between the network structures of distinct epoxies is further advanced by the Monomeric Degree Index (MDI). Experimental validation demonstrates the MD results correctly predict the relationship in Young's moduli. Therefore, ReaxFF is confirmed to be a useful tool for studying the mechanical behavior of epoxies.

Source: Journal of Polymer Science Part B Polymer Physics

DOI: 10.1002/polb.24539

Authors: Matthew S. Radue, Benjamin D. Jensen, S. Gowtham, Danielle R. Klimek‐McDonald, Julia A. King, Gregory M. Odegard

Institutions: Michigan Technological University, Langley Research Center

Language: English

Topic: Epoxy Resin Curing Processes

Subfield: Mechanical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: green

Funder: Air Force Office of Scientific Research

Award: G1828967787