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Description of ASTM-D3900 2010ASTM D3900 - 05a(2010)Standard Test Methods for Rubber-Determination of Ethylene Units in Ethylene-Propylene Copolymers (EPM) and in Ethylene-Propylene-Diene Terpolymers (EPDM) by Infrared SpectrometryActive Standard ASTM D3900 | Developed by Subcommittee: D11.11 Book of Standards Volume: 09.01 ASTM D3900Significance and Use These test methods can be used for determining which EPDM polymers are evaluated in the different compounds in Test Methods D3568 . Differences in ethylene sequence distribution cause differences in crystallinity and green strength at the same ethylene content. Since these are important variables in EPM and EPDM processability and end-use properties, the ethylene content of the rubber should not be used as the sole measurement to determine the suitability of a particular rubber for an intended purpose. 1. Scope 1.1 These test methods cover the determination of the proportion of ethylene and propylene units in ethylene-propylene copolymers (EPM) and ethylene-propylenediene terpolymers (EPDM) over the range from 35 to 85 mass % ethylene. Four test methods are needed to encompass the variety of commercial polymers that contain additives or polymerized diene units that interfere with the various infrared peaks. Except when interferences are present, all four test methods should give similar results. The test methods appear in the following order:
ASTM Standards D297 Test Methods for Rubber Products--Chemical Analysis D3568 Test Methods for Rubber--Evaluation of EPDM (Ethylene Propylene Diene Terpolymers) Including Mixtures With Oil 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 Keywords ethylene propylene copolymers; ethylene propylene diene terpolymers; infrared; Cast film method; Chemical analysis--rubber chemicals/materials; EPM/EPDM materials/applications; Ethylene-propylene copolymers; Infrared (IR) analysis--rubber; Infrared spectrophotometry; Pressed film method; Raw rubber; ICS Code ICS Number Code 83.040.10 (Latex and raw rubber) DOI: 10.1520/D3900-05AR10 ASTM International is a member of CrossRef. ASTM D3900This book also exists in the following packages...Subscription InformationMADCAD.com ASTM Standards subscriptions are annual and access is unlimited concurrency based (number of people that can access the subscription at any given time) from single office location. For pricing on multiple office location ASTM Standards Subscriptions, please contact us at info@madcad.com or +1 800.798.9296.
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About ASTMASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide. |
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