Chemically bonded iron carbonyl for magnetic composites based on phthalonitrile polymers

Abstract

Dicarboxylic acid-containing 1,3-benzoxazine was synthesized and chemically bonded on iron carbonyl particles using a post-coating method. Novel organic-inorganic hybrid magnetic composites were prepared via the interfacial reaction between magnetic phthalonitrile prepolymers and the benzoxazine functional coatings that chemically modified the iron carbonyl particles. The results showed that, compared with pure iron carbonyl particles, the modified particles could cure the phthalonitrile prepolymers efficiently and improve the interfacial compatibility of the functional composites. The magnetic composites with chemically modified particles exhibited stronger magnetism in comparison to composites containing bare particles: the saturation magnetization of the magnetic composites with equal concentration (5 wt%) of Fe(CO) 5 increased from 41.12 to 48.82 emu g −1 . Also, the magnetic composites obtained demonstrated excellent thermal stability up to 500 • C.

Self-promoted curing phthalonitrile with high glass transition temperature for advanced composites

“…The FTIR data revealed that the characteristic absorption peak of the nitrile band at 2231 cm −1 gradually decreased, which are attributed to an increase of curing temperature and time. It was consistent with a typical feature of polymerization of phthalonitrile polymers [30]. In addition, a weak peak assigned to the triazine absorption at 1520 cm −1 showed a small increase in intensity as the curing temperature and time increased.…”

Mechanical and thermal properties of phthalonitrile resin reinforced with silicon carbide particles

“…The easy processability of the phthalonitrile monomers into void-free thermosets with a number of exceptional properties, such as a high glass transition temperature, outstanding thermal and thermo-oxidative stabilities, excellent mechanical properties, good moisture, and fire resistant performance [3][4][5], allowed these types of resins to be used as an advanced composites matrices, adhesives, carbon precursors, and microelectronic packing materials [6][7][8].…”

Thermal and mechanical properties enhancements obtained by reinforcing a bisphenol-a based phthalonitrile resin with silane surface-modified alumina nanoparticles

“…This high performance resin has been widely used in different applications such as in composites [10], as a carbon precursor [11], and in microelectronic packaging [12].…”