Fabrication and properties of CTBN/Si₃N₄/cyanate ester nanocomposites

Hybrid fillers of carboxyl‐terminated liquid butadiene‐acrylonitrile/silicon nitride (CTBN/Si₃N₄) are performed to regulate the mechanical properties, heat resistance properties, dielectric properties and thermal conductivities of the bisphenol A dicyanate ester (BADCY) resins. With the 10 wt% addition of CTBN/Si₃N₄ hybrid fillers, the maximum impact, and flexural strength of the CTBN/Si₃N₄/BADCY nanocomposite is increased to 15.4 kJ/m² and 144.3 MPa, respectively. And the corresponding thermal conductivity value of the CTBN/Si₃N₄/BADCY nanocomposite is increased to 0.622 W/mK with 18 wt% addition of CTBN/Si₃N₄ hybrid fillers. Moreover, with the addition of CTBN/Si₃N₄ hybrid fillers, the heat resistance properties of the CTBN/Si₃N₄/BADCY nanocomposites are increased, but the dielectric properties get worse slightly. POLYM. COMPOS., 37:2522–2526, 2016. © 2015 Society of Plastics Engineers