The invention discloses a method for preparing a
graphite oxide / macromolecular water-based cold rolling lubricating additive, and relates to a method for preparing a
graphite oxide-based lubricating additive. The method solves the problems that the conventional cold rolling liquid has short service life, is easy to settle and break
emulsion and has poor lubricating performance, poor anti-
rust level, high
viscosity and high
residual carbon quantity and residual iron quantity. The method comprises the following steps of: adding
graphite oxide into
mixed solution of
thionyl chloride and methylbenzene, performing
reflux reaction to obtain graphite
acetyl chloride, then adding the graphite
acetyl chloride and water-soluble macromolecules into N,N-
dimethyl formamide to react,
drying the
reaction system, dispersing the dried product into water, then adding
ethanol to obtain
sediment, and
drying the
sediment. The molecular structure of the water-based cold rolling lubricating additive has flexible
polymer molecular chains, so the anti-friction performance of the lubricating additive is improved; the lubricating additive forms stable solution in water, and the solution has low
viscosity, is not easy to settle and has long service life; and the lubricating additive has good anti-
rust level and low
residual carbon quantity and residual iron quantity. Through the water-based cold rolling lubricating additive, the friction spot
diameter of the base liquid is reduced by 26.2 percent.