SINGLE-SIDED ELECTRO-GALVANIZED NON-CHROME SURFACE TREATMENT STEEL PLATE FOR FUEL TANK, AND SURFACE TREATMENT AGENT

摘要

An inorganic water surface treatment agent for a single-sided electro-galvanized non-chrome surface treatment steel plate, and a single-sided electro-galvanized non-chrome surface treatment steel plate for a fuel tank and a manufacturing method thereof. The inorganic water surface treatment agent for a single-sided electro-galvanized non-chrome surface treatment steel plate comprises a metal ion compound containing at least one of Zn2+, Mn2+, Mg2+, Ni2+, Al3+ and Ca2+; a vanadium contained compound with at least one of V4+ and V5+; a compound comprising at least one of a phosphoric acid, a pyrophosphoric acid, a metaphosphoric acid, an organic acid and an ammonium sa a fluoric acid comprising at least one of Zr, Ti, Si, and Ha; a silane coupling agent comprising at least one of a vinyl silane coupling agent, amino silane coupling agent, an epoxy silane coupling agent, and acryloyl silane coupling agent; a silicasol with a grain size of less than 100 nm; and a surface active agent comprising at least one of a carboxylate, a sulfate salt, sulfonate and a phosphate salt. A total solid content of the surface treatment agent is 2wt% to 20wt%. By using the method for manufacturing the a single-sided electro-galvanized non-chrome surface treatment steel plate for a fuel tank, after the surface of the single-sided electro-galvanized steel plate layer is solidified in 70 to 100 degrees centigrade after the surface is coated by using the foregoing surface treatment agent, and oil coating processing is performed finally, so as to obtain a 10 to600 mg/m2 membrane.