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 Measurement of Percent Crystallinity of Polyetheretherketone (PEEK) Polymers by Means of Specular Reflectance Fourier Transform Infrared Spectroscopy (R-FTIR)
Name übersetzen
NORM herausgegeben am 1.9.2020
Bezeichnung normen: ASTM F2778-09(2020)
Ausgabedatum normen: 1.9.2020
SKU: NS-1004641
Zahl der Seiten: 4
Gewicht ca.: 12 g (0.03 Pfund)
Land: Amerikanische technische Norm
Kategorie: Technische Normen ASTM
Keywords:
crystallinity, Fourier transmission infrared spectroscopy (FTIR), polyetheretherketone (PEEK), specular reflectance,, ICS Number Code 83.080.20 (Thermoplastic materials)
Significance and Use | ||
4.1 Mechanical properties of PEEK polymers, such as stiffness or yield strength, are influenced by the level of crystallinity.5 The reported crystallinity index determined by this test method has been correlated with percent crystallinity in PEEK polymers by wide-angle X-ray scattering (WAXS) experiments.2, 4.2 This test method may be useful for both process development, process control, product development, and research. |
||
1. Scope | ||
1.1 This test method describes the collection of absorption spectra of polyetheretherketone (PEEK) polymer in filled and unfilled grades, as supplied by a vendor, and the subsequent calculation of the percent crystallinity. The material is evaluated by infrared spectroscopy. The intensity (height) of the absorbance peaks is related to the amount of crystalline regions present in the material. 1.2 This test method can be used for PEEK consolidated forms, such as injection molded parts, as long as the samples are optically flat and smooth. 1.3 The applicability of the infrared method to industrial and medical grade PEEK materials has been demonstrated by scientific studies.2, 1.4 This test method does not suggest a desired range of crystallinity for specific applications. 1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.6 This standard may involve hazardous materials, operations, and equipment. 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. |
||
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: 2024-05-02 (Zahl der Positionen: 2 896 910)
© Copyright 2024 NORMSERVIS s.r.o.