TEST METHOD FOR DETERMINING ETCH PERFORMANCE OF COATED SUBSTRATE

TEST METHOD FOR DETERMINING ETCH PERFORMANCE OF COATED SUBSTRATE

The present invention provides a test method for simulating outdoor exposure conditions for testing a coated substrate to evaluate environmental etching of paint caused by acid rain. The test method requires that the test substrate have an acid solution having a pH of less than 6.0 applied thereto b...

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Hauptverfasser: BOISSEAU JOHN E, GROSSMAN DOUGLAS M, QUILL JEFFREY A, PATTISON LYNN E, WURST WILLIAM, DESKOVITZ PAUL J, BRENNAN PATRICK J, CAMPBELL DONALD H
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INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
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creator BOISSEAU JOHN E
GROSSMAN DOUGLAS M
QUILL JEFFREY A
PATTISON LYNN E
WURST WILLIAM
DESKOVITZ PAUL J
BRENNAN PATRICK J
CAMPBELL DONALD H
description The present invention provides a test method for simulating outdoor exposure conditions for testing a coated substrate to evaluate environmental etching of paint caused by acid rain. The test method requires that the test substrate have an acid solution having a pH of less than 6.0 applied thereto by spray or in atomized droplets. The substrate is held in a substantially horizontal position of less than 15° to the horizontal and exposed to heat of above a black panel temperature of 30° C. and light during testing. The light source must emit light in the spectral distribution of at least visible and ultraviolet light, including the spectral distribution of sunlight. Following exposure to testing the substrate is evaluated for environmental etch.
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subjects INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
title TEST METHOD FOR DETERMINING ETCH PERFORMANCE OF COATED SUBSTRATE
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