vinegar vs epoxy

T

tininjun67

I have read all the warnings against the use of phosphoric acid and epoxy. Does vinegar fall under the same scrutiny?
 
there's nothing wrong with using metal prep which is a wetting agent with 15 to 30% phosphoric acid. it just needs to be rinsed well before it drys. if you choose to use vinegar then rinse it well .

the only problem with acid is the wrong information on the net about it's use .
 
Food for thought. Acetic acid, the active ingredient in vinegar, will form iron acetate on contact with steel. I haven't found any good info on the effectiveness of iron acetate as a passivation layer, nor on its effect on coating adhesion. Unless someone can come up with that kind of information, I'd avoid vinegar as a pretreatment. In contrast, the properties of iron phosphate conversion treatments and zinc phosphate passivation layers are well known, and actually compatible with epoxy. It's just that they are so likely to be misused, or to be unintentionally left in hard to reach areas, their use is not recommended.
 
You must log in or register to reply here.
Back
Top