This invention belongs to the technical field of aluminum
powder passivating agents, specifically relating to an aluminum
powder passivating agent and its preparation method. The preparation method of the aluminum
powder passivating agent includes the following steps: heating a
solvent, adding anchoring functional monomers, including
styrene-based
phosphoric acid,
hydroxyethyl methacrylate phosphate, and 2-methacryloyloxyethyl
phosphate, stirring until homogeneous, continuing to add mixed monomers, stirring until homogeneous, adding a
mixed solution of initiator and
solvent dropwise, allowing the reaction to complete, adding
solvent to adjust the
solid content after the reaction, cooling to
room temperature, and obtaining the aluminum powder passivating agent. This invention provides a novel aluminum powder passivating agent and its preparation method. This passivating agent forms a stable protective layer through surface
passivation, effectively blocking the contact between aluminum powder and water, inhibiting
hydrogen generation, avoiding can bulging, and exhibiting high stability.