Coating processes – Direct application of electrical – magnetic – wave – or... – Electrostatic charge – field – or force utilized
Patent
1999-02-09
2000-09-26
Parker, Fred J.
Coating processes
Direct application of electrical, magnetic, wave, or...
Electrostatic charge, field, or force utilized
427486, 427180, 427201, B05D 112, B05D 104
Patent
active
061240001
ABSTRACT:
A method of rendering a surface of a metal substrate substantially acid impervious. The method includes first placing the surface in a field of treatment, then depositing a mixture of a high-temperature resistant polymer particulate such as polyamide particulate and a curable powder adhesive on the surface, and finally subjecting the surface-coated metal substrate to a curing treatment sufficient to cure the powder adhesive and thereby adhere the polymer particulate as a film on the surface. A steel substrate coated in accord with the present methodology is particularly useful as a curing fixture upon which resin-impregnated fiber of polymer composite material is placed to thereby give molded parts made therefrom a desired shape. Production of a part is accomplished by vacuum bagging the composite material to the steel fixture and curing the so-produced part in place on the fixture in an autoclave at an elevated temperature. In this manner the acid impervious curing fixture allows production of composite parts without the danger of leaching iron from the fixture to thus assure full-utility part fabrication.
REFERENCES:
patent: 3458595 (1969-07-01), Ulmer
patent: 3893977 (1975-07-01), Wingler
patent: 4009231 (1977-02-01), Wasserman et al.
patent: 4017447 (1977-04-01), Larsen et al.
patent: 4213486 (1980-07-01), Samour et al.
patent: 5387653 (1995-02-01), Merval et al.
Brimer Jerry Wynn
Kirk James A.
Oehlert, deceased William K.
Silva Ernie Robert
Wong Benjamin S.
Anderson Terry J.
Hoch Jr. Karl J.
Northrop Grumman Corporation
Parker Fred J.
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