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Standard Test Method for Apparent Density of Rigid Cellular Plastics
Automaticky přeložený název:
Standardní zkušební metoda pro zdánlivé hustoty tuhých lehčených plastů
NORMA vydána dne 1.4.2008
Označení normy: ASTM D1622/D1622M-14
Poznámka: NEPLATNÁ
Datum vydání normy: 1.4.2008
Kód zboží: NS-17877
Počet stran: 4
Přibližná hmotnost: 12 g (0.03 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Keywords:
apparent core density, apparent density, apparent overall density, density, rigid cellular plastics, spray foam, ICS Number Code 83.100 (Cellular materials)
Significance and Use | ||||||||
4.1 If the material to be tested includes forming skins, the apparent overall density, or the apparent core density, or both, shall be determined. If the material does not have forming skins, the term overall density is not applicable. 4.2 This test method is also applicable to spray foam materials. 4.3 Before proceeding with this test method, reference shall be made to the specification of the material being tested. Any test specimen preparation, conditioning, dimensions, or testing parameters, or combination thereof, covered in the relevant ASTM materials specification shall take precedence over those mentioned in this test method. If there are no relevant ASTM material specifications, then the default conditions in this method apply. 4.4 When density or apparent density is used in reference to a cellular plastic, without further qualification, it shall be interpreted as follows: 4.4.1 density—shall be interpreted as being the apparent overall density if the material is to be used with forming skins intact. 4.4.2 density—shall be interpreted as the apparent core density if the forming skins have been, or will be, removed before the material is used. |
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1. Scope | ||||||||
1.1 This test method covers the density of a cellular plastic. Density can be evaluated as the apparent overall density (includes forming skins) or by apparent core density (forming skins removed). 1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. 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.
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Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
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ISO 845
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Cellular Plastics and Rubbers--Determination of Apparent (Bulk) Density Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
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Standard Terminology Relating to Plastics
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Standard Practice for Conditioning Plastics for Testing |
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