Wet and dry joint-coating primer for heat shrinkable tape and manufacturing method thereof

The invention relates to a wet and dry joint-coating primer for a heat shrinkable tape and a manufacturing method thereof. The joint-coating primer comprises a liquid A and a liquid B, wherein the liquid A is prepared from bisphenol A epoxy resin, novolac epoxy resin, long-chain polyamine amide, polar acid ester sodium salt, a high molecular weight amine polycarboxylate derivate solution, a polyether modified dimethyl polysiloxane solution, an alkyl-aryl modified dimethyl siloxane solution, a gamma-amino propyltriethoxysilane solution, carbon black, precipitated barium sulfate, mica powder, talcum powder, gas-phase silicon oxide, glass flake and activated polyamide wax, and the liquid B is prepared from modified alicyclic amine and phenolic aldehyde amine. In use, the liquid A and the liquid B are mixed and cured into a coating which has fine corrosion resistance and high curing speed. Besides, no matter whether the coating is dry or not, the coating has high bonding power up to 100N/cm with the heat shrinkab