Synthesis and Application of Arylaminophosphazene as a Flame Retardant and Catalyst for the Polymerization of Benzoxazines
Autor: | Yuri S. Svistunov, Yulya V. Bilichenko, Viktoria V. Petrakova, Alexander A. Kolenchenko, Nikolay V. Pavlov, Natalia V. Bornosuz, T. A. Grebeneva, Igor S. Sirotin, Vyacheslav V. Kireev, Duong Thien Nguyen, Larisa V. Chursova, Vyacheslav V. Shutov, Alexey V. Orlov, Irina Yu. Gorbunova, Denis V. Onuchin |
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Jazyk: | angličtina |
Rok vydání: | 2021 |
Předmět: |
Materials science
flame retardant Polymers and Plastics catalysis flammability General Chemistry phosphazenes curing kinetics Article Catalysis lcsh:QD241-441 chemistry.chemical_compound Polymerization Chemical engineering chemistry lcsh:Organic chemistry m-toluidine benzoxazines Glass transition Curing (chemistry) Derivative (chemistry) Phosphazene biomaterials Flammability Fire retardant |
Zdroj: | Polymers Polymers, Vol 13, Iss 263, p 263 (2021) Volume 13 Issue 2 |
ISSN: | 2073-4360 |
Popis: | 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&ndash Tompkins equation for both steps. |
Databáze: | OpenAIRE |
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