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Standard Test Method for Measuring Surface Water Absorption of Overlaid Wood-Based Panels
Automaticky přeložený název:
Standardní zkušební metoda pro měření povrchové vody Absorpce obložil na bázi dřeva
NORMA vydána dne 1.8.2013
Označení normy: ASTM D7433-13
Poznámka: NEPLATNÁ
Datum vydání normy: 1.8.2013
Kód zboží: NS-38448
Počet stran: 3
Přibližná hmotnost: 9 g (0.02 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Keywords:
wood-based panels, water absorption, overlays, Cobb Ring, ICS Number Code 79.060.01 (Wood-based panels in general)
Significance and Use | ||||||
3.1 Water absorptiveness through the surface of an overlaid panel is a function of various characteristics of the overlay and substrate, including overlay resin content, thickness of the overlay, porosity, and permeability. 3.2 This test method is useful in comparing the water absorption characteristics of different overlaid panel products. The results from this test method are influenced by both the performance of the overlay system and the panel substrate. Therefore, the results are appropriate for comparison of the relative performance of an overlay system when tested over similar or matched panel substrates. 1.1 This test method covers the
determination of the quantity of water absorbed in a specified time
through the surface of an overlaid wood-based panel. The test
method measures the rate of water gain within a controlled surface
area of the overlaid panel surface when exposed to standing water.
The method was adapted from the principles of Test Method
D5795.
1.2 This test method is applicable to various overlaid wood-based panels including, but not limited to, plywood (such as MDO grades and HDO grades referenced in PS 1–09), oriented strand board, medium density fiberboard, particleboard, and hardboard. 1.3 This test method does not address sampling procedures, number of replications nor performance criteria since those details vary depending upon the purpose of the testing and the type of product. The method is specific to the panel surface and does not evaluate water absorption or edge swell that may occur along panel edges. The method does not consider the variables related to in-service moisture conditions and therefore does not claim to directly relate to water absorption that may occur in actual panel use situations. 1.4 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only. 1.5 This test method 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 test method to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. |
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2. Referenced Documents | ||||||
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