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Polymers
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State-of-the-Art Polymer Science and Technology in Russia  (2020,2021)
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State-of-the-Art Polymer Science and Technology in Russia  (2020,2021)

A special issue of Polymers (ISSN 2073-4360).

Deadline for manuscript submissions: closed (31 December 2021) | Viewed by 4519

Special Issue Editor

Prof. Dr. Alexander Malkin

E-Mail Website
Guest Editor
Institute of Petrochemical Synthesis, Russian Academy of Sciences, Moscow, Russia
Interests: mechanics of polymers; rheology of polymer melts and solutions; colloid; multicomponent compositions; nanocomposites; polymer technology and pocessing
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Research

15 pages, 4377 KiB  
Article
Synthesis and Application of Arylaminophosphazene as a Flame Retardant and Catalyst for the Polymerization of Benzoxazines
by Natalia V. Bornosuz, Irina Yu. Gorbunova, Vyacheslav V. Kireev, Yulya V. Bilichenko, Larisa V. Chursova, Yuri S. Svistunov, Denis V. Onuchin, Vyacheslav V. Shutov, Viktoria V. Petrakova, Alexander A. Kolenchenko, Duong T. Nguyen, Nikolay V. Pavlov, Alexey V. Orlov, Tatyana A. Grebeneva and Igor S. Sirotin
Polymers 2021, 13(2), 263; https://doi.org/10.3390/polym13020263 - 14 Jan 2021
Cited by 7 | Viewed by 3596
Abstract
A novel type of phosphazene containing an additive that acts both as a catalyst and as a flame retardant for benzoxazine binders is presented in this study. The synthesis of a derivative of hexachlorocyclotriphosphazene (HCP) and meta-toluidine was carried out in the medium [...] Read more.
A novel type of phosphazene containing an additive that acts both as a catalyst and as a flame retardant for benzoxazine binders is presented in this study. The synthesis of a derivative of hexachlorocyclotriphosphazene (HCP) and meta-toluidine was carried out in the medium of the latter, which made it possible to achieve the complete substitution of chlorine atoms in the initial HCP. Thermal and flammability characteristics of modified compositions were investigated. The modifier catalyzes the process of curing and shifts the beginning of reaction from 222.0 °C for pure benzoxazine to 205.9 °C for composition with 10 phr of modifier. The additive decreases the glass transition temperature of compositions. Achievement of the highest category of flame resistance (V-0 in accordance with UL-94) is ensured both by increasing the content of phenyl residues in the composition and by the synergistic effect of phosphorus and nitrogen. A brief study of the curing kinetics disclosed the complex nature of the reaction. An accurate two-step model is obtained using the extended Prout–Tompkins equation for both steps. Full article
(This article belongs to the Special Issue State-of-the-Art Polymer Science and Technology in Russia  (2020,2021))
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