ИСТИНА

Existing studies of phthalonitrile thinners have demonstrated that fiber-reinforced plastics (FRP) based on them are promising for operation at temperatures above 300°C. Silicon-containing phthalonitrile derivatives have relatively low melting points, therefore they may potentially be used as active thinners in mixtures of phthalonitrile monomers for the preparation of polymeric matrices for FRP. Structures with siloxane bridges are characterized by hydrolytic instability. Silozane linkers, in turn, are resistant to hydrolysis. However, to date, there is only one publication that addresses phthalonitrile compounds containing the Si-N bond.[1] The compounds described in this publication are capable of undergoing polycondensation reactions in the absence of catalysts and possess sufficiently high thermal stability. Therefore, the objective of this work was to synthesize and determine the properties of a number of promising silicon-containing monomers and the FRP based on them.