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Standard Test Method for Methyl (Comonomer) Content in Polyethylene by Infrared Spectrophotometry
Automaticky preložený názov:
Štandardná skúšobná metóda pre metyl (komonomér) Obsah v polyetylénu Infrared Spektrofotometria
NORMA vydaná dňa 1.1.2010
Označenie normy: ASTM D6645-01(2010)
Poznámka: NEPLATNÁ
Dátum vydania normy: 1.1.2010
Kód tovaru: NS-36005
Počet strán: 4
Približná hmotnosť: 12 g (0.03 libier)
Krajina: Americká technická norma
Kategória: Technické normy 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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