Synthesis and Investigation of Thermal and Dynamic Mechanical Properties of Urethane-Containing Epoxy Resins

Year 2023, , 95 - 106, 01.10.2023

Orçun Yüksel Eren Yıldırım Oğuz Yücel , Serkan Emik

https://doi.org/10.58692/jotcsb.1309480

Abstract

This study aims to improve the thermal and mechanical properties of epoxy-based materials. For this purpose, the structure of epoxy resins was changed by chemical modification and epoxy resin containing urethane was synthesized. The synthesized resin was blended with commercial epoxy resin at the ratios of 25%, 50%, 75% by weight and hardened by curing. The thermal and mechanical properties of urethane-containing epoxy materials prepared in different proportions were compared with those produced from commercial epoxy resin. The structural characterization of the prepared materials was investigated by Fourier Transform Infrared Spectroscopy (FTIR) analysis, their thermal behavior was investigated by Thermogravimetric Analysis (TGA), and their mechanical properties were investigated by Dynamic Mechanical Analysis (DMA). TGA and DMA analyses of the materials showed that the presence of urethane in the structure of epoxy resins significantly changed the mechanical and thermal properties. It was observed that the storage and loss modulus values of urethane-containing resins increased approximately 2.5 times compared to commercial epoxy resins, and a decrease of approximately 10% in thermal degradation temperatures was observed.

Keywords

epoxy, ftir, urethane, tga, dma

Supporting Institution

Scientific Research Projects Coordination Unit of Istanbul University-Cerrahpasa

Project Number

56922

Thanks

The authors would like to thank Prof. Dr. Ali Durmuş and Assoc. Prof. Dr. Alper Kaşgöz for their assistance in DMA analysis.

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