六（4-乙酰氨基苯氧基）环三磷腈固化环氧树脂DER-331及所制备组合物的性能

Curing of Epoxy Resin DER-331 by Hexakis(4-acetamidophenoxy)cyclotriphosphazene and Properties of the Prepared Composition.

作者信息

Chistyakov Evgeniy M, Terekhov Ivan V, Shapagin Aleksey V, Filatov Sergey N, Chuev Vladimir P

机构信息

D. Mendeleev University of Chemical Technology of Russia, 125047 Moscow, Russia.

All-Russian Scientific Research Institute of Aviation Materials, 105005 Moscow, Russia.

出版信息

Polymers (Basel). 2019 Jul 17;11(7):1191. doi: 10.3390/polym11071191.

The method of optical wedge revealed that the optimum temperature for compatibility of hexakis(4-acetamidophenoxy)cyclotriphosphazene (ACP) and DER-331 epoxy resin is in the range of 220-260 °C. The interdiffusion time of components at these temperatures is about 30 min. The TGA and differential scanning calorimetry (DSC) methods revealed the curing temperature of 280 °С for this composition. IR spectroscopy confirmed that the reaction between the resin and ACP is completed within 10 min. According to the DSC data, a glass transition temperature of 130 °С was estimated for the cured resin. Combustion test UL-94 demonstrated that the obtained material can be assigned to the fireproof category of V-0. Burning droplets were not formed during the burning. The coke formed during the combustion of samples possessed a dense and porous structure. The shape of pores is closed, while their size is in the range of 0.2-200 µm.