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ASTM D2967-07(2017)
Standard Test Method for Corner Coverage of Powder Coatings
Přeložit název
NORMA vydána dne 1.6.2017
Informace o normě:
Označení normy: ASTM D2967-07(2017)
Poznámka: NEPLATNÁ
Datum vydání normy: 1.6.2017
Kód zboží: NS-686096
Počet stran: 3
Přibližná hmotnost: 9 g (0.02 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Kategorie - podobné normy:
Anotace textu normy ASTM D2967-07(2017) :
Keywords:
coating powder, corner coverage, corner thickness, edge coverage, face thickness, powder coating,, ICS Number Code 29.035.99 (Other insulating materials)
Doplňující informace
| Significance and Use | ||
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4.1 This test method measures the degree to which different coating powder materials cover sharp corners. Corner coverage is influenced by face thickness, thixotropy, melt viscosity, surface tension, cure rate, and temperature of application and curing. |
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| 1. Scope | ||
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1.1 This test method covers the determination of the ratio of corner thickness (see 3.1.3) to face thickness (see 3.1.4) of powder coatings applied to a specific face thickness by dipping preheated square bars into aerated powder and curing the coating using predetermined conditions. Note 1: The property of corner coverage has also been referred
to as “edge coverage,” though the latter is not recommended. There
are widespread misunderstandings and expectations relative to the
term “edge coverage.” This test is performed on a steel bar having
square corners and the results do not necessarily relate to edges
that are sharper, that is, burrs. A coating that has measurable
corner coverage may still not protect sharper edges from corrosion
or provide the electrical insulation needed in some
applications.
1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. |
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| 2. Referenced Documents | ||
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