Abstract:
The temperature measurements and anti-/deicing experiments of the composite anti-/deicing component were performed with water-based and oil-based graphene coating. In view of the sensitivity of helicopter rotor to icing, a method of modifying the heat transfer performance of rotor anti-/deicing component with graphene coating on the iron surface was proposed to improve the efficiency of anti-/deicing component. In order to verify the effect of graphene coating on the heat transfer efficiency, the temperature measurements and deicing experiments of the coated rotor anti-/deicing components were carried out on the deicing experimental platform. The experimental results show that the graphene coating has a significant effect on improving the heat transfer performance of anti-/deicing component. Meanwhile, the heat transfer of oil-based graphene coating and water-based graphene coating were tested respectively. The results show that the temperature rise rate of oil-based graphene coating is higher than that of water-based graphene coating, and the average heat transfer rate of oil-based graphene coating is 0.021℃/s, the instantaneous maximum heat transfer rate is 0.083℃/s, which are higher than that of water-based graphene coating. The results indicate that the anti-/deicing effect of oil-based graphene coating is better than that of water-based graphene coating. Finally, by changing the spraying process to control the thickness of graphene coating, it is found that with the increasing of the thickness of graphene coating, the thermal conductivity of the coating gradually decreases. The experimental results verify the inverse proportion relationship between the thermal conductivity of graphene coating and the thickness of the sheet in the thermal conductivity formula deduced by Balandin et al.