ASTM D6047 - 99(2009)

    Standard Test Methods for Rubber, Raw--Determination of 5-Ethylidenenorbornene (ENB) or Dicyclopentadiene (DCPD) in Ethylene-Propylene-Diene (EPDM) Terpolymers

    Active Standard ASTM D6047 | Developed by Subcommittee: D11.11

    Book of Standards Volume: 09.01


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    Abstract

    These test methods cover the determination of the content of 5-ethylidenenorbornene (ENB) or dicyclopentadiene (DCPD) in ethylene-propylene-diene (EPDM) terpolymers. They are applicable to diene contents in the 0.1 to 10 mass % range. The different apparatus used for testing are presented in details. The methods for the preparation of the test specimen are presented in details. The precision and bias for ENB shall be prepared to meet the requirements prescribed. The precision and bias for DCPD shall be prepared to meet the requirements prescribed.

    This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

    1. Scope

    1.1 These test methods cover the determination of the content of 5-ethylidenenorbornene (ENB) or Dicyclopentadiene (DCPD) in ethylene-propylene-diene (EPDM) terpolymers. They are applicable to diene contents in the 0.1 to 10 mass % range.

    1.2 ENB and DCPD are dienes introduced in ethylene/propylene rubbers to generate specific cure properties. Since high precision for diene content determination has become very important, a Fourier Transform Infrared Spectroscopic (FTIR) method was developed. Diene determination was performed in the past by a refractive index technique.

    Note 1—The procedures for % ENB and % DCPD differ only in the location in the infrared (IR) of the IR peak being quantified.

    1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

    1.4 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 (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D297 Test Methods for Rubber Products--Chemical Analysis

    D1416 Test Methods for Rubber from Synthetic Sources--Chemical Analysis

    D3568 Test Methods for Rubber--Evaluation of EPDM (Ethylene Propylene Diene Terpolymers) Including Mixtures With Oil

    D3900 Test Methods for Rubber--Determination of Ethylene Units in Ethylene-Propylene Copolymers (EPM) and in Ethylene-Propylene-Diene Terpolymers (EPDM) by Infrared Spectrometry

    D4483 Practice for Evaluating Precision for Test Method Standards in the Rubber and Carbon Black Manufacturing Industries

    E168 Practices for General Techniques of Infrared Quantitative Analysis

    E932 Practice for Describing and Measuring Performance of Dispersive Infrared Spectrometers

    E1421 Practice for Describing and Measuring Performance of Fourier Transform Mid-Infrared (FT-MIR) Spectrometers: Level Zero and Level One Tests

    ANCHA Document

    Specification for Evaluation of Research Quality Analysis of Infrared Spectra


    ICS Code

    ICS Number Code 83.060 (Rubber)

    UNSPSC Code

    UNSPSC Code 13101725(Ethylene propylene diene EPDM)


    DOI: 10.1520/D6047-99R09

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