Fabrication and properties of CTBN/Si 3 N 4 /cyanate ester nanocomposites

Hybrid fillers of carboxyl‐terminated liquid butadiene‐acrylonitrile/silicon nitride (CTBN/Si 3 N 4 ) 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/Si 3 N 4 hybrid fillers, the maximum impact, and flexural strength of the CTBN/Si 3 N 4 /BADCY nanocomposite is increased to 15.4 kJ/m 2 and 144.3 MPa, respectively. And the corresponding thermal conductivity value of the CTBN/Si 3 N 4 /BADCY nanocomposite is increased to 0.622 W/mK with 18 wt% addition of CTBN/Si 3 N 4 hybrid fillers. Moreover, with the addition of CTBN/Si 3 N 4 hybrid fillers, the heat resistance properties of the CTBN/Si 3 N 4 /BADCY nanocomposites are increased, but the dielectric properties get worse slightly. POLYM. COMPOS., 37:2522–2526, 2016. © 2015 Society of Plastics Engineers