Enhanced Thermally Conductive Silicone Grease by Modified Boron Nitride

In this work, a chemical modification method was used to prepare silicone grease with high thermal conductivity. We report two preparation methods for conductive fillers, which are hydroxylated boron nitride-grafted carboxylic oil (h-BN-OH@CS) and amino (h-BN-NH2@CS). When h-BN-OH@CS h-BN-NH2@CS were filled 30 wt% in the base grease, conductivity 1.324 W m−1 K−1 0.982 K−1, is 6.04 4.48 times that of (0.219 K−1), respectively. The interfacial resistance reduced from 11.699 °C W−1 1.889 2.514 W−1, Inorganic filler h-BN organic chemically grafted improve compatibility between grease. covalent bond functionalized stronger than van der Waals force, can reduce viscosity