Wir benötigen Ihre Einwilligung zur Verwendung der einzelnen Daten, damit Sie unter anderem Informationen zu Ihren Interessen einsehen können. Klicken Sie auf "OK", um Ihre Zustimmung zu erteilen.
Standard Test Method for In Situ Determination of Network Parameters of Crosslinked Ultra High Molecular Weight Polyethylene (UHMWPE)
Name übersetzen
NORM herausgegeben am 1.10.2016
Bezeichnung normen: ASTM F2214-16
Anmerkung: UNGÜLTIG
Ausgabedatum normen: 1.10.2016
SKU: NS-666116
Zahl der Seiten: 5
Gewicht ca.: 15 g (0.03 Pfund)
Land: Amerikanische technische Norm
Kategorie: Technische Normen ASTM
Keywords:
crosslink density, molecular weight, network, swelling, UHMWPE,, ICS Number Code 83.080.01 (Plastics in general)
Significance and Use | ||||
5.1 This test method is designed to produce data indicative of the degree of crosslinking in ultra high molecular weight polyethylene that has been crosslinked chemically or by ionizing radiation. 5.2 The results are sensitive to the test temperature, solvent, and method used. For the comparison of data between institutions, care must be taken to have the same test conditions and reagents. 5.3 The data can be used for dose uniformity analysis, fundamental research, and quality assurance testing. |
||||
1. Scope | ||||
1.1 This test method describes how the crosslink density, molecular weight between crosslinks, and number of repeat units between crosslinks in ultra-high molecular weight polyethylene (UHMWPE) crosslinked by ionizing radiation or by chemical means can be determined by measuring the swelling ratio of samples immersed in o-xylene. Examples of experimental techniques used to make these measurements are discussed herein. 1.2 The test method reported here measures the change in height of a sample specimen while it is immersed in the solvent. Volumetric swell ratios assume that the sample is crosslinked isotropically, and that the change in dimension will be uniform in all directions. This technique avoids uncertainty induced by solvent evaporation or temperature change. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4 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. |
||||
2. Referenced Documents | ||||
|
Wollen Sie sich sicher sein, dass Sie nur die gültigen technischen Vorschriften verwenden?
Wir bieten Ihnen Lösungen, damit Sie immer nur die gültigen (aktuellen) legislativen Vorschriften verwenden könnten.
Brauchen Sie mehr Informationen? Sehen Sie sich diese Seite an.
Letzte Aktualisierung: 2024-04-28 (Zahl der Positionen: 2 896 137)
© Copyright 2024 NORMSERVIS s.r.o.