Aircraft painting and finishing Flashcards
Why is butyrate dope safer to use than nitrate dope?
Much less flammable
What are the two types of dope used for fabric finishes?
Cellulose nitrate
Cellulose acetate butyrate
What is the appearance of a blushing paint finish?
Chalky or cloudy
What finishing defect is the result of a paint room temperature that is too warm?
Pinholes or blisters
What causes dope to blush?
High humidity, moisture in the spray system, or application over a damp surface.
What factors cause spray paint sags and runs?
Inadequate surface preparation or paint sprayed on too thickly
what components or parts of the airframe must be protected from damage when using paint stripper?
Windshields and windows, plastics, composites, synthetic rubber, and fabrics
What is the function of zinc-chromate or wash primers?
Primers serve to inhibit corrosion and provide a good bond between the metal and topcoats.
Name several common types of paint used on aircraft.
Zinc-chromate and wash primers, synthetic enamels, acrylic lacquer, and polyurethane
What is the proper thinner to use with zinc-chromate primer?
toluene
What health and safety precautions must be observed when using the toxic solvents and thinners that are part of modern finishing systems?
Respirators and/or masks must be worn when spraying finishes.
If spray painting dust causes a surface to appear dry and rough, what are the most likely causes?
Too much air pressure or the spray gun is too far from the surface being painted.
What causes “orange-peel”?
Spray pressure too high, use of a thinner that dries too fast, cold temperatures or a damp draft over the surface.
what regulation governs the application of the registration numbers to aircraft registered in the United States?
FAR part 45
Other than appearance, what is another reason for touching up painted surfaces?
reduction or elimination of general corrosion problems.
