High thermal and mechanical properties enhancement obtained in highly filled polybenzoxazine nanocomposites with fumed silica

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

“…In fact, this improvement in the thermal stability upon adding the SiC fillers can be explained by a good dispersion of the particles in the resin and a better adhesion between the matrix and the inorganic fillers due to the presence of polar groups on the external surface of the treated SiC microparticles. Also, the high decomposition temperature of the SiC microparticles allows them to act as a thermal insulator protecting the bisphthalonitrile matrix [47]. Another explanation is that the used micro-SiC particles restrain the movement of the chain inside the polymeric matrix; this trend has also been observed in polyurethane filled with silicon carbide nanofillers [30] and in the multi-walled carbon nanotube (MWCNT) reinforced polybenzoxazine nanocomposites [48].…”

Friction and Mechanical Properties of Highly Filled Polybenzoxazine Composites: Nanosilica Particle Size and Surface Treatment

“…The determination of density can provide insight into the nature of the particle dispersion within the polymer matrix as well as the presence of voids or air gap formation in the sample . One of the outstanding characteristics of BA‐a is low A‐stage viscosity and therefore, it provides good filler wetting characteristic and allows large amount of filler or reinforcement to be incorporated in the matrix resin during composite fabrication as previously reported .…”

“…Polybenzoxazines have been reported to exhibit a high glass transition temperature ( T g ), high thermal stability, high modulus, low dielectric constant, low water absorption, and near‐zero shrinkage upon curing . In addition, a unique property of benzoxazine resins is its very low A‐stage viscosity which gives an excellent processibility for fabrication of highly filled composite system and consequently exhibits a good adhesion with various type of fillers such as boron nitride (BN), woodflour, graphite, graphene, and nanosilica …”

“…Dueramae et al. studied the effect of nanosilica particle contents on mechanical and thermal properties of highly filled polybenzoxazine nanocomposites filled with nanosilica particles . Storage modulus and microhardness of the nanocomposites exhibited an enhancement of 83% and 49% from those of the polybenzoxazine matrix, respectively at the maximum nanosilica loading of 30 wt% (18.8 vol%) in the polybenzoxazine.…”

Effect of Thermo-oxidation on the Mechanical Performance of Polymer Based Composites for High Temperature Applications

“…Finally, the significant increment in the glass transition temperature (T g ) of the PBA-a/nano-SiO 2 composites was also observed with the ΔT g up to 16°C at the nano-SiO 2 loading of 30 wt%. The resulting PBA-a/nano-SiO 2 composite can be used as coating material in electronic packaging or other related applications [50]. Aluminosilicates are important materials for applications related to adsorbents, water softeners, catalysis and mechanical and thermal reinforcement because of their high surface area, excellent thermal and hydrothermal stability, high shape-selectivity and superior ionexchange capability.…”