Effect of movable crosslinking points on mechanical properties in composite materials of large amount of plasma-surface-modified boron nitride and slide-ring elastomer

Abstract The slide-ring (SR) effect in composite materials is demonstrated by comparing the mechanical properties of plasma-modified boron nitride (p-BN)/SR elastomers and p-BN/fixed crosslinked (FC) elastomer composite materials that include a large amount of plasma-surface-modified BN (∼56 vol%). The toughness of p-BN/SR was ∼7 times that of p-BN/FC. Such SR effect was not observed in the raw BN/SR composite material but only in the p-BN/SR composite material. Time-domain nuclear magnetic resonance measurements suggested that the plasma-surface modification of BN formed crosslinking points to the SR and suppressed the decrease in the molecular mobility of SR in the composite materials.