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NEPLATNÁ ASTM D3452-06(2012) 1.8.2012 náhľad

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ASTM D3452-06(2012)

Standard Practice for Rubber—Identification by Pyrolysis-Gas Chromatography

Automaticky preložený názov:

Štandardná prax pre Guma & ndash; Identifikácia pyrolýzou-plynovej chromatografie

NORMA vydaná dňa 1.8.2012

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Informácie o norme:

Označenie normy: ASTM D3452-06(2012)
Poznámka: NEPLATNÁ
Dátum vydania normy: 1.8.2012
Kód tovaru: NS-23679
Počet strán: 4
Približná hmotnosť: 12 g (0.03 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM

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Keywords:

GC, gas chromatography, pyrogram, pyrolysis, rubber composition, rubber identification, ICS Number Code 83.060 (Rubber)

Doplňujúce informácie

Significance and Use

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.

1. Scope

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.

2. Referenced Documents

D297-21	Standard Test Methods for Rubber Products—Chemical Analysis
E260-96(2019)	Standard Practice for Packed Column Gas Chromatography
E355-96(2021)e1	Standard Practice for Gas Chromatography Terms and Relationships (Includes all amendments and changes 4/28/2021).