Polimery 1998, No 11-12, 709
Modification of liquid epoxy resin with aliphatic polyols of different average molecular weights and identical average functionality is described for the systems cured with acid anhydrides. The composition has a lower viscosity as compared with the original epoxy resin, and a sufficient shelf-life. After curing with different anhydrides, the formulated systems have significantly improved mechanical properties, viz., mechanical strengths, fracture toughness, energy to break and impact resistance, and very good electrical properties. Only a slight decrease of Tg was observed as compared with the unmodified resin.
Keywords: acid anhydride-cured epoxy resins, electric properties, mechanical properties