Zinc Rich Organic Coating Systems Exposed to a Marine Atmosphere: Three-year Exposure of Zinc Rich Saran PDF Download
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Author: Carl V. Brouillette
Publisher:
ISBN:
Category :
Languages : en
Pages : 22
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Book Description
Three-package or two-package zinc-rich epoxy coatings, with or without topcoats, and a zinc-filled modified saran (5.3 pounds of zinc per gallon), with or without a modified saran topcoat, will give long term protection to steel in a marine atmospheric environment. (Author).
Author: Carl V. Brouillette
Publisher:
ISBN:
Category :
Languages : en
Pages : 22
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Book Description
Three-package or two-package zinc-rich epoxy coatings, with or without topcoats, and a zinc-filled modified saran (5.3 pounds of zinc per gallon), with or without a modified saran topcoat, will give long term protection to steel in a marine atmospheric environment. (Author).
Author: Carl V. Brouillette
Publisher:
ISBN:
Category : Paint, Antifouling
Languages : en
Pages : 58
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Book Description
Zinc-rich organic primers, with and without topcoats, were exposed for 5 years in the tropical marine atmospheric environment of Kwajalein, Marshall Islands, and Kaneohe, Hawaii, and at Port Hueneme, California. Satisfactory protection to steel test panels was given by two- and three-package zinc-rich epoxy primers, and a zinc-filled modified saran coating. An alkyd enamel was found to be a very good topcoat when applied directly over the zinc- rich primer. A silicone alkyd was found to give outstanding protection as a topcoat. A modified saran containing 3.1 to 5.3 pounds of zinc dust per gallon, with or without a modified saran topcoat, gave excellent protection to the steel test specimens. Zinc-rich epoxy primers are recommended for replacing primers containing toxic lead oxide or chromate pigmentation. The degree of protection of metal substrates by coating systems exposed to severe tropical marine atmospheric environments for 3 to 5 years can be used as the criterion for predicting good to superior performance by coatings.
Author: Carl V. Brouillette
Publisher:
ISBN:
Category :
Languages : en
Pages : 64
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Book Description
Zinc rich epoxy coatings, with and without topcoats, were exposed to marine atmospheric environments at Kwajalein, Marshall Islands, Kaneohe Marine Corps Air Station, Kaneohe, Hawaii, and Port Hueneme, California for periods up to 3 years. These coatings were found to be excellent coatings for protecting steel in marine atmospheric environments. The alkyd enamel, TT-E-489c, applied directly over the zinc-rich epoxy and topcoated with a silicone alkyd proved to be the best topcoat system. A modified Navy saran coating containing 5 pounds of zinc dust per gallon of coating gave excellent protection to steel in marine atmospheric environments. (Author).
Author: Naval Civil Engineering Laboratory (Port Hueneme, Calif.)
Publisher:
ISBN:
Category : Bibliographical services
Languages : en
Pages : 374
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Book Description
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 428
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Book Description
Author: Carl V. Brouillette
Publisher:
ISBN:
Category :
Languages : en
Pages : 34
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Book Description
Zinc-rich organic coatings, with and without topcoats, were exposed at a 6000 foot depth in the Pacific Ocean for six months' duration. Two air-dried zinc-rich epoxies, without topcoats, and one of these with an air dried epoxy topcoat, blistered during the six months of exposure. In contrast zinc-rich 'catalytically' cured epoxies, with or without 'catalytically' cured epoxy or coal-tar epoxy topcoats gave excellent protection to steel test panels. Also, a zinc-filled modified orange saran gave excellent protection to steel panels for six months in the deep ocean. Modified white saran topcoats did not improve the protection given by the zinc-filled modified orange saran. (Author).
Author:
Publisher:
ISBN:
Category : Corrosion and anti-corrosives
Languages : en
Pages : 294
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Book Description
Author: William J. Paton
Publisher:
ISBN:
Category : Carbon steel
Languages : en
Pages : 92
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Book Description
A program was conducted to evaluate the performance of topcoated and untopcoated zinc-rich coatings. Sacrificial coatings of this type are required for protecting carbon steel structures from the aggressive KSC sea coast environment. A total of 59 commercially available zinc-rich coatings and 47 topcoated materials were exposed for an 18-month period. Test panels were placed in special racks placed approximately 30.5 m (100 feet) above the high tide line at the KSC Corrosion Test Site. Laboratory tests to determine the temperature resistance, abrasion resistance, and adhesion of the untopcoated zinc-rich coatings were also performed. It has been concluded that: (1) The inorganic types of zinc-rich coatings are far superior to the organic types in the KSC environment. (2) Organic zinc-rich coatings applied at 0.1 - 0.15 mm (4-6 mils) film thickness provide better corrosion protection than when applied at the manufacturers' recommended nominal film thickness of .08 mm (3 mils). (3) Topcoats are not necessary, or even desirable, when used in conjunction with zinc-rich coatings in the KSC environment. (4) Some types of inorganic zinc-rich coatings require an extended outdoor weathering period in order to obtain adequate mechanical properties. and (5) A properly formulated inorganic zinc-rich coating is not affected by a 24-hour thermal exposure to 400 C (752 F).
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 1140
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Author:
Publisher:
ISBN:
Category : Research
Languages : en
Pages : 1266
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Book Description
Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.
