Handbook of Solvents - George Wypych - ChemTech - Ventech!

852 George Wypych
8 P Enenkel, H Bankowsky, M Lokai, K Menzel, W Reich, Pitture e Vernici, 75, No.2, 23-31 (1999).
9 J. van Heumen, H Khalil, W Majewski, G. Nickel, G Wypych, US Patent 5,288,797, Tremco, Ltd., 1994.
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13 Pitture e Vernici, 73, No.20, 39-40 (1997).
14 M Moss, Pigment Resin Technol., 26, No.5, 296-9 (1997).
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20 R M Podhajny, Paper, Film & Foil Converter, 72, No.12, 24 (1998).
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22 I R Owen, US Patent 5,464,888, 3M, 1995.
23 C D Congelio, A M Olah, US Patent 5,859,103, BFGoodrich, 1999.
24 D Zhao, H Sakuyama, T Tomoko, L-C Chang, J-T Lin, US Patent 5,859,181, Nippon Mektron Ltd., 1999.
25 H Ariga, N Futaesaku, H Baba, US Patent 5,663,265, Maruzen Petrochemical Co. Ltd., 1997.
26 E Konig, U F Gronemeier, D Wegener, US Patent 5,672,229, Bayer AG, 1997.
14.2 AEROSPACE
George Wypych
ChemTec Laboratories, Inc., Toronto, Canada
Figure 14.2.1 shows a schematic diagram of the aerospace manufacturing process. 1 Metal
finishing is the process in which most solvents and solvent containing materials are used.
The main function of the metal finishing process is corrosion protection which requires
proper cleaning, surface preparation, and the selection of suitable coatings.
The functions of coatings used in aircrafts are different from those used in ordinary
coating applications therefore an extrapolation of the progress made with solvent replacement
in other coating types is not justified. The typical flight conditions of operating
altitude (about 10,000 m above the earth), speed (most frequently 900 km/h), temperature
(very low in space at about -60 o C and substantially higher after landing up to 80 o C), humidity
(low in space and high at earth level are combined with condensation due to the tempera-
Figure 14.2.1. Schematic diagram of aerospace manufacturing process. [Reproduced from Profile of the Aerospace
Industry. EPA Office of Compliance Sector Notebook Project. US Environmental Protection Agency. November
1998.]