ASTM C910-06(2011)..
ASTM C957/C957M-10..
ASTM D1025-10
ASTM D1052-09(2014)..
ASTM D1053-92a(2012)..
ASTM D1056-14
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ASTM D3452-06(2012)
Standard Practice for Rubber—Identification by Pyrolysis-Gas Chromatography
Automatische name übersetzung:
Standard Praxis für Gummi und mdash; Identifikation durch Pyrolyse-Gaschromatographie
NORM herausgegeben am 1.8.2012
Informationen über die Norm:
Bezeichnung normen: ASTM D3452-06(2012)
Anmerkung: UNGÜLTIG
Ausgabedatum normen: 1.8.2012
SKU: NS-23679
Zahl der Seiten: 4
Gewicht ca.: 12 g (0.03 Pfund)
Land: Amerikanische technische Norm
Kategorie: Technische Normen ASTM
Kategorie - ähnliche Normen:
Die Annotation des Normtextes ASTM D3452-06(2012) :
Keywords:
GC, gas chromatography, pyrogram, pyrolysis, rubber composition, rubber identification, ICS Number Code 83.060 (Rubber)
Ergänzende Informationen
| Significance and Use | ||||||
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3.1 For research, development, and quality control purposes, it is advantageous to determine the composition of rubbers in cured, compounded products. 3.2 This practice provides such composition analysis, utilizing a gas chromatograph and pyrolysis products from rubber decomposition. |
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| 1. Scope | ||||||
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1.1 This practice covers the identification of polymers in raw rubbers, and cured and uncured compounds, based on a single polymer, by the gas chromatographic patterns of their pyrolysis products (pyrograms). Implementation of this guide presupposes a working knowledge of the principles and techniques of gas chromatography, sufficient to carry out this practice and to interpret the results correctly.2 1.2 This practice will identify the following polymers: 1.2.1 Polyisoprene of natural or synthetic origin, 1.2.2 Butadiene-styrene copolymers, 1.2.3 Polybutadiene, 1.2.4 Polychloroprene, 1.2.5 Butadiene-acrylonitrile copolymers, 1.2.6 Ethylene-propylene copolymers and related terpolymers, and 1.2.7 Isobutene-isoprene copolymers. 1.3 This practice will not differentiate the following polymers: 1.3.1 Natural polyisoprene from synthetic polyisoprene. 1.3.2 Butadiene-styrene copolymers produced by solution and emulsion polymerization. It is sometimes possible to distinguish butadiene-styrene copolymers containing different amounts of styrene as well as random polymers from block polymers. 1.3.3 Polybutadiene with different microstructures. 1.3.4 Different types of polychloroprenes. 1.3.5 Butadiene-acrylonitrile copolymers with different monomer ratios. 1.3.6 Ethylene-propylene copolymers with different monomer ratios, as well as the copolymers from the related terpolymers. 1.3.7 Isobutene-isoprene copolymers (butyl rubbers) from halogenated butyl rubbers. 1.3.8 Polyisoprene containing different amounts of cis-trans isomers. 1.3.9 The practice does not identify ebonite or hard rubbers. 1.4 The values stated in SI units are to be regarded as standard. The values given in parentheses are for information only. 1.5 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. |
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| 2. Referenced Documents | ||||||
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