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Standard Test Method for Methyl (Comonomer) Content in Polyethylene by Infrared Spectrophotometry
Automatische name übersetzung:
Standardtestverfahren für Methyl- (Comonomer) Inhalt aus Polyethylen durch Infrarotspektrophotometrie
NORM herausgegeben am 1.1.2010
Bezeichnung normen: ASTM D6645-01(2010)
Anmerkung: UNGÜLTIG
Ausgabedatum normen: 1.1.2010
SKU: NS-36005
Zahl der Seiten: 4
Gewicht ca.: 12 g (0.03 Pfund)
Land: Amerikanische technische Norm
Kategorie: Technische Normen ASTM
Keywords:
branching, comonomer, FTIR, infrared spectrophotometry, polyethylene, Infrared spectrophotometry, Methyl content, Polyethylene (PE), ICS Number Code 19.100 (Non-destructive testing), 83.080.20 (Thermoplastic materials)
Significance and Use | ||||||||||||||||||||||||
This method determines the number of branches (that is, comonomer content) in copolymers of ethylene with 1-butene, 1-hexene or 1-octene. This information can be correlated with physical properties such as melting point, density, and stiffness, all of which depend on the degree of crystallinity of the polymer. Differences in the comonomer content thus may have a significant effect on the final properties of products made from these resins. |
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1. Scope | ||||||||||||||||||||||||
1.1 This test method covers the determination of methyl groups (that is, comonomer content) in polyethylenes by infrared spectrophotometry. The test method is applicable to copolymers of ethylene with 1-butene, 1-hexene, or 1-octene having densities above 900 kg/m3. High-pressure low-density polyethylenes (LDPE) and terpolymers are excluded. 1.2 The values stated in SI units, based on , are to be regarded as 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. Note 1—There is no known ISO equivalent to this standard. |
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2. Referenced Documents | ||||||||||||||||||||||||
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