Tailoring of Eco-Friendly Epoxies with Synergistic Adhesion Strength

Document Type : Research Paper

Authors

1 Department of Materials Science and Engineering, Faculty of Engineering, Urmia University, P. O. BOX 575615-1818, Urmia, Iran

2 Baspar Pishrafteh Sharif Company, Tehran, Iran

3 Department of Materials Science and Engineering, Sharif University of Technology, P. O. Box 11155-9466, Tehran, Iran

Abstract

For sustainable development, eco-friendly epoxies, composed of recycled rubber micro-particles and core-shell rubber (CSR) nanoparticles, were processed to improve adhesion strength of an epoxy resin to structural steel substrates. To achieve this, the influence of mixing ratio of a recycled rubber micro-particles and CSR nanoparticles on the adhesion strength and adhesion fracture mechanisms of an epoxy were investigated in the present study. Synergistic adhesion strength was obtained for a certain combination of 7.5 parts per hundred resin (phr) CSR nanoparticles and 2.5 phr recycled rubber micro-particles. The remarkable increase in adhesion strength was attributable to “branching” of the crack-tip damage zone plus crack deflection to cause an adhesive to cohesive fracture transformation.

Keywords

References

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Iranian Journal of Materials Forming
Volume 9, Issue 4
October 2022
Pages 34-43

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