Potřebujeme váš souhlas k využití jednotlivých dat, aby se vám mimo jiné mohly ukazovat informace týkající se vašich zájmů. Souhlas udělíte kliknutím na tlačítko „OK“.
Standard Test Method for Carbon Black—Morphological Characterization of Carbon Black Using Electron Microscopy
Automaticky přeložený název:
Standardní zkušební metoda pro Carbon Black & ndash , morfologická charakterizace sazí pomocí elektronové mikroskopie
NORMA vydána dne 1.1.2014
Označení normy: ASTM D3849-14
Poznámka: NEPLATNÁ
Datum vydání normy: 1.1.2014
Kód zboží: NS-25087
Počet stran: 8
Přibližná hmotnost: 24 g (0.05 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Keywords:
aggregate size, automated image analysis, carbon black, electron microscopy, particle size, statistical thickness surface area, ICS Number Code 83.040.20 (Rubber compounding ingredients)
Significance and Use | ||||
4.1 Carbon black morphology significantly affects the transient and end-use properties of carbon black loaded polymer systems. A carbon black's particle size distribution is its single most important property, and it relates to degree of blackness, rubber reinforcement, and ability to impart UV protection. For a given loading of carbon black, blackness, reinforcement, and UV protection increase with smaller particle size. Aggregate size and shape (structure) also affect a carbon black's end-use performance, as higher carbon black structure increases viscosity and improves dispersion. The stiffness (modulus) of elastomer systems becomes significantly higher with increasing structure. The preferred method for measuring carbon black morphology (for example, size and shape) is transmission electron microscopy (TEM), but due to the semi-quantitative nature of TEM, it is not suited for mean particle size (MPS) certification. 4.2 Carbon black aggregate dimensional and shape properties are dependent upon the nature of the system in which the sample is dispersed, as well as the mixing procedure. |
||||
1. Scope | ||||
1.1 This test method covers 1.2 The values stated in SI units are to be regarded as the standard. The values in parentheses are for information only. 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. |
||||
2. Referenced Documents | ||||
|
Poslední aktualizace: 22.11.2024 (Počet položek: 2 206 568)
© Copyright 2024 NORMSERVIS s.r.o.