Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

The Relaxation Model of Relation between Elastic Modulus and Thermal Expansivity of Thermosetting Polymers’ and Frps’

Version 1 : Received: 9 January 2023 / Approved: 13 January 2023 / Online: 13 January 2023 (06:26:49 CET)

A peer-reviewed article of this Preprint also exists.

Korolev, A.; Mishnev, M.; Ulrikh, D.; Zadorin, A. Relaxation Model of the Relations between the Elastic Modulus and Thermal Expansivity of Thermosetting Polymers and FRPs. Polymers 2023, 15, 699. Korolev, A.; Mishnev, M.; Ulrikh, D.; Zadorin, A. Relaxation Model of the Relations between the Elastic Modulus and Thermal Expansivity of Thermosetting Polymers and FRPs. Polymers 2023, 15, 699.

Abstract

This research is completed in development of researches devoted to relations between elastic modulus (MoE) and thermal expansivity (CTe) of different materials. This study experimentally confirmed the relation of MoE and CTe for thermosetting polymers and FRPs both under normal and heating temperatures. As the thermosetting polymers, the epoxy compositions were used and glass fiber and mineral additives for FRP. The experiment was based on dilatometric and elastic deformations’ testing. Also, the relaxation model of MoE/CTe was proposed, that is based on physical properties of polymers’ supramolecular structures. The comparative analyzing of MoE/CTes’ different models is done. The most accurate models are determined, and the relaxation model has demonstrated the high accuracy.

Keywords

polymers; polymer composites; glass fiber reinforced plastics; elasticity; modulus of elasticity; thermal expansivity; coefficient of thermal expansion; relaxation; thermo-relaxation

Subject

Chemistry and Materials Science, Polymers and Plastics

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