固体润滑国家重点实验室（LSL）知识库

Composite insulators with superhydrophobic coatings can ensure the safe operation of railways, electricity and
telecommunication systems. A robust Mg(OH)2/epoxy resin superhydrophobic coating for composite insulators
is reported. The coating is fabricated by a simple method, and the water contact angle reaches its maximum
value of 155° at the stearic acid loading of 0.285 g. The superhydrophobic property is controlled by different
amounts of stearic acid, which influence the surface roughness of the coating. Additionally, the coating shows
mechanical stability, chemical durability and a self-cleaning property, allowing it to be stored in water for more
than 20 days. In consideration of the above-mentioned advantages, these characteristics make the composite
insulators with this coating a better value than the commercial composite insulators, which is of great benefit to
global electricity issues.