Synthesis of Bisphenol A Based Phosphazene-Containing Epoxy Resin with Reduced Viscosity

Polymers

Jianxin Mu¹  Igor S. Sirotin²  Sergey N. Filatov²  Yulya V. Bilichenko²  Anastasiya V. Eroshenko²  Vyacheslav V. Kireev²  Dmitry A. Kuznetsov³  Roman S. Borisov⁴ 

[1] College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China;Department of Plastics, Mendeleev University of Chemical Technology of Russia, Miusskaya sq. 9, 125047 Moscow, Russia;Scientific & Research Institute of Natural Gases and Gas Technologies — Gazprom VNIIGAZ, Razvilka, s.p. Razvilkovskoe, Leninsky dist., Moscow region, 142717 Moscow, Russia;Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Leninskii pr. 29, 119991 Moscow, Russia;

关键词: epoxy resin, epoxy oligomer, phosphazene, bisphenol a, phenol;   

DOI  :  10.3390/polym11121914

来源: DOAJ

【 摘 要 】

Phosphazene-containing epoxy oligomers (PEO) were synthesized by the interaction of hexachlorocyclotriphosphazene (HCP), phenol, and bisphenol A in a medium of excess of epichlorohydrin using potassium carbonate and hydroxide as HCl acceptors with the aim of obtaining a product with lower viscosity and higher phosphazene content. PEOs are mixtures of epoxycyclophosphazene (ECP) and a conventional organic epoxy resin based on bisphenol A in an amount controlled by the ratio of the initial mono- and diphenol. According to ³¹P NMR spectroscopy, pentasubstituted aryloxycyclotrophosphazene compounds predominate in the ECP composition. The relative content in the ECP radicals of mono- and diphenol was determined by the MALDI-TOF mass spectrometry method. The organic epoxy fraction, according to gas chromatograpy-mass spectrometry (GC-MS), contains 50−70 wt % diglycidyl ether of bisphenol A. PEO resins obtained in the present work have reduced viscosity when compared to other known phosphazene-containging epoxy resins while phosphazene content is still about 50 wt %. Resins with an epoxy number within 12−17 wt %, are cured by conventional curing agents to form compositions with flame-retardant properties, while other characteristics of these compositions are at the level of conventional epoxy materials.

【 授权许可】

Unknown