Functionalized Oligoaryloxycyclotriphosphazenes and Noncombustible Binders Based on Them

Yu. V. Bilichenko; Биличенко Ю. В.; Pham Van Thuan; Тхуан Фам Ван; R. S. Borisov; Борисов Р. С.; A. A. Kolenchenko; Коленченко А. А.; V. V. Kireev; Киреев В. В.

doi:10.31857/S2308114723700346

Functionalized Oligoaryloxycyclotriphosphazenes and Noncombustible Binders Based on Them

Authors: Bilichenko Y.V.¹, Thuan P.V.¹, Borisov R.S.¹^,2, Kolenchenko A.A.¹, Kireev V.V.¹
Affiliations:
1. Mendeleev University of Chemical Technology
2. Topchiev Institute of Petrochemical Synthesis
Issue: Vol 65, No 2 (2023)
Pages: 158-163
Section:
URL: https://journals.rcsi.science/2308-1147/article/view/232903
DOI: https://doi.org/10.31857/S2308114723700346
EDN: https://elibrary.ru/HYBZXK
ID: 232903

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Abstract
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Abstract

Carboxyl-containing aryloxycyclotriphosphazene (I) has been used for curing the ED-20 epoxy resin or a phosphazene-containing epoxy oligomer. In the case of ED-20, curing occurs in the range of 125‒220°C and is accompanied by an exothermic effect that increases from 26 to 50 J/g with an increase in the amount of aryloxycyclotriphosphazene (I) from 25 to 50%. The curing of the phosphazene-containing epoxy oligomer occurs in the temperature range of 140–240°C and is accompanied by an endothermic effect (−ΔH = 6.5–6.8 J/g). Cured compositions based on ED-20 + I are self-extinguishing (flammability class V‑1 according to UL-94), and phosphazene-containing epoxy oligomer + I compositions are noncombustible (class V-0 according to UL-94) regardless of the ratio of the initial components.

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