Michael Meyen / Claudia Riesmeyer (2009): Diktatur des Publikums. Journalisten in Deutschland. Konstanz: UVK

Basalt fiber reinforced polymers with improved thermal and mechanical properties by combination of twin polymerization with epoxide chemistry

“…APSI reacts in a twin polymerization in presence of BADGE reactant to a hybrid network consisting of a phenolic resin and a bisphenol A-based polydialkylsiloxane (Scheme 1) [21]. As the monomer ratio of conventional epoxy and amine curing agent determines the mechanical and thermal properties of the resulting thermosetting polymer, BADGE was cured with APSI at two different compositions -BADGE/APSI 1:1 and 1:2.…”

“…Twin polymerization of BADGE and APSI yields an inorganic-organic hybrid material featuring increased thermal stability depending on the composition and curing temperature [21]. Moreover, SiO 2 formation while combustion gives higher residual mass.…”

“…The experimental values correlate with the calculated SiO 2 content (Table 3). Slight deviations can be explained by incomplete polymerization of the polydialkylsiloxane or formation of cyclic siloxanes that evaporate during the heating process [21].…”

“…It can be polymerized thermally and reacts to a phenolic resin and a polydialkylsiloxane with pendant primary amino groups still accessible for reaction with electrophilic reagents [20]. Thus, the reaction of amino functionalized TM (APSI) and commercially available bisphenol-A-diglycidylether (BADGE) (Scheme 1) leads to the formation of a nanostructured and crosslinked epoxide/amine, phenolic resin and polydialkylsiloxane network [21].…”