NPFC - TT-P-1757
PRIMER COATING, ALKYD BASE, ONE COMPONENT
|Publication Date:||15 May 1997|
This specification covers the requirements for two types, classes, and colors of a one-component, alkyd-base, corrosion-inhibiting
The primers coatings consist of the following types:
Type I - Volatile content consists of non-photochemically reactive solvents (see 126.96.36.199) Type II - Volatile organic compound (VOC) content less than or equal to 340 grams/liter (gm/l) (2.8 lb./gal) (see 188.8.131.52)
The primer coatings consist of the following classes:
Class C - Chromate based corrosion-inhibitors
Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commander, Naval Air Warfare Center Aircraft Division Code 414100 B120-3, Highway 547, Lakehurst, NJ 08733-5100, by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter.
The primer coating colors consist of the following:
Color Y - Deep yellow Color T - Green (FED-STD-595, color number 34151)
Part numbers, for cataloging purposes, may be assigned in accordance with 6.3.
This primer coating is intended for use as a corrosion inhibiting primer coating on aluminum and aluminum alloy structures and surfaces and on surfaces coated with a pretreatment coating... View More
This primer coating is intended for use as a corrosion inhibiting primer coating on aluminum and aluminum alloy structures and surfaces and on surfaces coated with a pretreatment coating conforming to MIL-C-8514 or DOD-P-15328. The recommended dry film thickness is 15.2 to 22.9 µm (0.6 to 0.9 mil). Suggested testing for dip or flow-coat application is as follows:
• Dip application: Dip a test panel, with approximate dimensions of 101.5 by 305 mm (4 by 12 in.), full-length, into the primer coating, whose viscosity has been reduced as specified by the manufacturer. Upon removal from the primer coating, examine the test panel. If the film is not uniform in appearance and free from color separation, runs, sags or streaks, it is unsuitable for dip application.
• Flow-coat application. When applied by flow-coating to a glass panel, the primer coating should produce a continuous film, free from grit, seeds, streaks, blisters, or other surface irregularity.View Less