Southern California Aerospace Industry’s Program to Control Smog Produced by Chemical Milling Maskants and Shop Protective Coatings 670816

This paper discusses the materials, test criteria results, and conclusions for chemical milling maskants and hand-peelable shop protective coatings which comply with Rule 66 of the Los Angeles County Air Pollution Control District (APCD), and are used by the aerospace industry in Southern California.
The maskants were evaluated to determine the material best suited under Rule 66 to perform chemical milling, and the shop protective coatings were evaluated to determine the material best suited for protecting metal surfaces during fabrication, adhesive bonding, and assembly operations.


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