Thermostable cyanate ester resins and POSS-containing nanocomposites: influence of matrix chemical structure on their properties

Thermostable densely crosslinked cyanate ester resins (CER) with different chemical structures, derived from monomer dicyanate esters of bisphenol E (DCBE), bisphenol A (DCBA), hexafluorobisphenol A (6F‐DCBA) or from cyanated phenol‐formaldehyde oligomer PT‐30, and the nanocomposites based thereon, with 0.01 to 10 wt% epoxycyclohexyl‐functionalized polyhedral oligomeric silsesquioxane (ECH‐POSS), were synthesized and characterized by means of dynamic mechanical analysis, differential scanning calorimetry, far‐infrared, and creep rate spectroscopy techniques. As shown, thermal and mechanical properties increased in a row of matrices prepared from DCBE