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Synergistic Effects of Microspheres, Microfibers, and A Phosphorus-Boron Modifier in Fire- and Heat-Resistant Ethylene-Propylene-Diene Rubber Composites

V. G. Kochetkov(1), V. F. Kablov(2), N. A. Keibal(3), O. M. Novopolceva(4), D. A. Kryukova(5), D. A. Urzhumov(6), I. M. Myasnikov(7), S. V. Borisov(8), M. P. Spiridonova(9),


(1) Volgograd State Technical University
(2) Volgograd State Technical University
(3) Volgograd State Technical University
(4) Volgograd State Technical University
(5) Volgograd State Technical University
(6) Volgograd State Technical University
(7) Volgograd State Technical University
(8) Volgograd State Technical University
(9) Volgograd State Technical University
Corresponding Author

Abstract


This study investigates fire- and heat-resistant elastomeric composites based on ethylene-propylene-diene rubber containing functionally active microheterogeneous structures composed of microspheres, microfibers, and a synthesized phosphorus-boron organic modifier. The modifier was synthesized from aminotrimethylene phosphonic acid, diethylene glycol, and boric acid, while low-temperature plasma treatment was applied to enhance its interaction with the microdispersed components. The resulting three-component structures improved the mechanical, thermal, adhesive, and fire-protective performance of the elastomeric composites. Their incorporation increased the heating time of the unheated surface, reduced the linear burning rate, increased coke residue, and strengthened the resulting coke layer while maintaining material density. These findings demonstrate the synergistic role of microspheres, microfibers, and the phosphorus-boron modifier in developing multifunctional elastomeric composites with enhanced resistance to high-temperature and fire exposure.

Keywords


Ethylene-propylene-diene rubber; Fire-heat protection; Microfibers; Microspheres; Phosphorus-boron modifier.

References


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