The structural characteristics and the conductivity of the epoxy-inorganic polymers, obtained due to hardening by heteropolyacids.

Epoxy polymers based on epoxy resin ED-20 and water solutions of phosphotungstic and phosphomolibdic heteropolyacids have been synthesized. It is shown that the type of heteropolyacid and quantity of the solvent influence on the structural characteristics and the conductivity of the obtained epoxy-inorganic polymers. Increasing of the crosslinking density of the epoxy-inorganic polymer causes growth its glass transition temperature in accordance with the linear law. This dependence is stronger for the epoxy-phosphomolibdic polymers than for the epoxy-phosphotungstic polymers. The conductivity of the investigated polymers increases with molecular weight between crosslinking sites in accordance with power dependence. [ABSTRACT FROM AUTHOR]