Preparation method of carbonyl iron powder based rust-proof powder for producing integrally-formed inductor

Abstract

The invention discloses a preparation method of carbonyl iron powder based rust-proof powder for producing an integrally-formed inductor. The preparation method comprises the following steps: phosphating carbonyl iron powder; dissolving epoxy resin and organic silicon resin into a glue solution by using acetone; diluting a special insulation treating agent with acetone; diluting a film-forming agent with acetone; and adding the glue solution into the phosphatized carbonyl iron powder and stirring into slurry, adding a special insulation treating agent solution and continuing stirring to a uniform state, adding a film-forming agent solution and continuing stirring to a uniform state, carrying out granulating, airing and drying the particles, then adding zinc stearate and carrying out stirring to a uniform state, and carrying out sieving and screening to obtain the carbonyl iron powder based rust-proof powder. By adding the special insulation treating agent and the film-forming agent, ahigh-insulation adhesive film with considerable strength is formed on the surfaces of carbonyl iron powder particles, environmental erosion can be effectively resisted, the product directly achieves an anti-rust effect, the production cycle can be shortened, the production efficiency can be improved, and the production cost can be reduced.

Description

technical field [0001] The invention belongs to the technical field of passive electronic components manufacturing, and in particular relates to a preparation method of carbonyl iron powder antirust powder for producing integrally formed inductors. Background technique [0002] At present, when the one-piece inductor is produced, the electrically connected coil and electrode terminal are first put into the production mold, and then the powder prepared by carbonyl iron powder is filled and compacted by cold pressing with the upper and lower punches to form a As a whole, it is cured at high temperature and has the advantages of strong anti-electromagnetic interference, small size, high current, and low power consumption. [0003] When the carbonyl iron powder purchased in the existing market is prepared into powder and used for the production of integrated inductors, the integrated inductors are prone to rust, and additional spraying treatment (usually painting) is required on...

AI Technical Summary

Problems solved by technology

[0003] When the carbonyl iron powder purchased in the existing market is prepared into powder and used for the production of integrated inductors, the integrated inductors are prone to rust, and additional spraying treatment (usually painting) is required on the surface of the product to prevent rust, which increases The production process prolongs the production cycle and reduces production efficiency