Abstract
The organic/inorganic hybrid materials from polyhedral oligomeric silsesquioxane (POSS, inorganic nanoparticles) and polybenzoxazine (PBZ) have received much interesting recently due to their excellent thermal and mechanical properties, flame retardance, low dielectric constant, well-defined inorganic framework at nanosized scale level, and higher performance relative to those of non-hybrid PBZs. This review describes the synthesis, dielectric constants, and thermal, rheological, and mechanical properties of covalently bonded mono- and multifunctionalized benzoxazine POSS hybrids, other functionalized benzoxazine POSS derivatives, and non-covalently (hydrogen) bonded benzoxazine POSS composites.
Highlights
We focus on the synthesis and polyhedral oligomeric silsesquioxane (POSS) as well of as various through physical with PBZs
We developed a new nanocomposite prepared from the reactions of a incorporation of the POSS units intoPBZ/POSS
We developed a new PBZ/POSS nanocomposite prepared from the reactions of a multifunctional
Summary
Benzoxazine (BZ) monomers are heterocyclic compounds containing oxygen and nitrogen atoms in a six-membered oxazine ring; they can be synthesized through facile and environmentally friendly condensation reactions of aromatic phenols, primary or aromatic amines, and paraformaldehyde in the absence of a catalyst [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20]. The incorporation of organic functional groups (e.g., vinyl, allyl, methacryloyl, nitrile, benzoxazole, epoxy), inorganic silicates (e.g., clay), carbon nanotubes (CNTs), and polyhedral oligomeric silsesquioxane (POSS) into BZ monomers can improve the thermal or mechanical properties of PBZ resins through the crosslinking network formation and decreased chain mobility [43,44,45,46,47,48,49,50,51,52,53,54,55,56] Both organic components and inorganic POSS can display the enhancement of performance capability compared with that their non-hybrid polymeric [57,58]. Three approaches have been developed for the introduction of POSS NPs into BZs monomers
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