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ASTM D3452-06(2021)
Standard Practice for Rubber—Identification by Pyrolysis-Gas Chromatography
NORMA vydaná dňa 1.11.2021
Informácie o norme:
Označenie normy: ASTM D3452-06(2021)
Dátum vydania normy: 1.11.2021
Kód tovaru: NS-1044313
Počet strán: 5
Približná hmotnosť: 15 g (0.03 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Kategórie - podobné normy:
Anotácia textu normy ASTM D3452-06(2021) :
Keywords:
GC, gas chromatography, pyrogram, pyrolysis, rubber composition, rubber identification,, ICS Number Code 83.060 (Rubber)
Doplňujúce informácie
| 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.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 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.6?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. |
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| 2. Referenced Documents | ||||||
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