Method of combining electrocoated primer with fluoropolymer coating

摘要

The electrophoretically coating of a conductive workpiece with an epoxy resin and then depositing a fluoropolymer top coat on said epoxy resin is provided. The method includes electrodepositing a first epoxy resin layer, which is subsequently at least partially cured, and then depositing a fluoropolymer onto the workpiece as a second layer. Subsequently, the workpiece is further cured.

主权项

1. A method of coating a conductive workpiece with a fluoropolymer topcoat comprising:
(a) positioning said workpiece in a first mixture containing a first epoxy resin, wherein a first electrode is also positioned in said first mixture; (b) applying a potential between said workpiece and said first electrode until a coating of said first epoxy resin has been deposited on said workpiece to create an epoxy-coated workpiece; (c) subjecting said first epoxy-coated workpiece to a first curing sufficient to bring said first epoxy resin to at least a partially cross-linked state to create at least a partially cured workpiece; (d) depositing a second mixture containing a fluoropolymer onto said at least partially cured workpiece to create a fluoropolymer coated workpiece, wherein said second mixture is deposited by electrodeposition; and (e) subjecting said fluoropolymer-coated workpiece to a second curing sufficient to cure said second mixture deposited on said epoxy-coated workpiece.