Abstract：To find the heat exchange coil of air source heat pump with the best performance, SiC powder, gra‐
phene and spherical graphite with different volume concentrations were added to the coating on the surface of the
copper tube, and the water-based epoxy resin coating was used as the comparison benchmark. The effects of dif‐
ferent filler types and filler concentrations on heat dissipation performance, anti-frosting performance and corro‐
sion resistance performance of the specimens were studied respectively. The test results show that the perfor‐
mance of the coating is improved with the addition of filler. For the SiC filler coating, the heat dissipation, antifrosting and corrosion resistance all increase with the increase of volume concentration. For the graphene filler
coating, with the increase of volume concentration, the anti-frosting performance is improved, but due to the ag‐
gregation of molecules, the heat dissipation and corrosion resistance increase first and then decrease. For the
spherical graphite filler coating, the heat dissipation and anti-frosting properties increase with the increase of vol‐
ume concentration, and same as graphene, the corrosion resistance performance shows a trend of rising first and
then falling. Through the comprehensive comparison of three different fillers, the performance of spherical graph‐
ite is better than other fillers in terms of anti-frosting and corrosion resistance performances, and in terms of heat
dissipation, when the inlet water temperature is high, it is also superior to other test pieces.
史新立，张 柳. 铜管表面不同环氧树脂复合涂层性能对比研究[J]. 粉末冶金工业, 2023, 33(04): 54-60.
SHI Xinli，ZHANG Liu. Comparative study on performance of different epoxy resin composite coatings on copper tube surface. Powder Metallurgy Industry, 2023, 33(04): 54-60.
2023, Vol. 33 
