wash primer

wash primer

[′wäsh ‚prī·mər]
(metallurgy)
A synthetic vehicle primer containing phosphoric acid and zinc chromate; used as a corrosion-inhibiting first paint coat on metals.

wash primer

A primer containing polyvinyl butyral, zinc chromate, alcohol, and phosphoric acid; applied in a thin film to bare steel, causes etching of the metal, thereby promoting adhesion of the subsequent coat.
References in periodicals archive ?
Sherwin-Williams Aerospace Coatings donated products--including Chrome Hazard Free Urethane Primer and Wash Primer --to create and protect the Red Knight color scheme.
This DIM system eliminates the need to use any type of metal pretreatment, such as Alodine, Solgel, or Wash primer technologies; the primer is applied directly to the clean Scotch-Brited substrate and provides the necessary adhesion and corrosion resistance to meet the stringent specification requirements," notes Fusco.
The wash primer protects the surface and will help the WD primer bond to it.
Wash primer is excellent for galvanized and aluminum surfaces to promote adhesion of top coats.
PPG donated a wash primer, which was used to prepare the aircraft surface for primer application, as well as primer and topcoat, which recreated the olive drab color and yellow markings of the original "Dinah Might" flown by Maj.
1) Twelve years later, it was found that a wash primer, based solely on silanes could provide similar benefits.
PPG Industries aerospace business has qualified a new chromate-free wash primer coatings system to SAE International s Aerospace Material Specification 3095 for airline exterior paint.
A direct to metal system eliminates the need to use any kind of metal pre-treatment such as Alodine, Solgel or Wash primer technologies.
In addition, there should be some kind of wash primer, pretreatment, or conversion coating to enhance wetting and provide a uniform surface for better adhesion.
Built in 1976, it was grit blasted and shop coated with one of zinc chromate polyvinylbutyral wash primer plus three coats of zinc phosphate epoxy primer (4 mils).
It eliminates the need to apply a wash primer, which is often used with urethane adhesives to ensure adequate adhesion of parts.
This is the first completely chrome free wash primer in the industry, and is well-suited for aftermarket and OEM applications in terms of improved efficiency.