| abstract |
Provided is a primer for metal surfaces and the preparation method thereof. The primer comprises 50-80 wt% of organic solvent (A), 2-15 wt% of phenolic resin (B), 1-10 wt% of rubber elastomer (C), 1-10 wt% of silane coupling agent (D), 5-25 wt% of metal oxide powder (E), and 1-10 wt% of inorganic filler (F); wherein the organic solvent (A) is an organic solvent capable of dissolving the phenolic resin (B) and the rubber elastomer (C), and the inorganic filler (F) is different from the metal oxide powder (E). The primer can facilitate the bonding of metal and rubber, and has high adhesion strength. |