Fig. 1. Particle size distribution curve of n-BN measured by DLS

Fig. 2. Tensile strength (a) and TG curves (b) of EP before and after being irradiated by γ-ray at different absorbed doses (color online)

Fig. 3. Molecular structure of TADE, MHHPA, and DMP-30 and the curing mechanism of resin

Fig. 4. Calculated bond dissociation energies of every bond in crosslinking structure of epoxy resin

Fig. 5. Tensile strengths of m-BN/EP (a) and n-BN/EP (b) composites after being irradiated by γ-ray at different absorbed doses

Fig. 6. DSC curves of EP and BN/EP composites before γ-ray radiation

Fig. 7. SEM images of EP and its composites before and after being irradiated at different doses

Fig. 8. XRD patterns of EP, 3% m-BN/EP and 3% n-BN/EP

Fig. 9. TG curves of m-BN/EP and n-BN/EP after being irradiated by γ-ray at different absorbed doses (color online)