ASTM-D3900 2000

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D3900-95(2000) Standard Test Methods for Rubber Raw-Determination of Ethylene Units in EPM (Ethylene-Propylene Copolymers) and EPDM (Ethylene-Propylene-Diene Terpolymers)

Published By	Publication Date	Number of Pages
ASTM	2000	9

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Categories: 83.040.10 - Latex and raw rubber, ASTM

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Description

1.1 These infrared 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:

1.1.1 Pressed Film Test Methods

1.1.2 Cast Film Test Methods:

1.2 These test methods are not applicable to oil-extended EPDM unless the oil is first removed in accordance with Test Method D.

1.3 The values stated in SI units are to be regarded as the 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.

Additional information

	Sections
Test Method B -For EPM and EPDM between 60 and 85 mass % ethylene, except for ethylene/propylene/1,4-hexadiene terpolymers	14-18
Test Method A -For EPM and EPDM between 35 and 65 mass % ethylene	8-13
Test Method D -For all EPM and EPDM polymers between 35 and 85 mass % ethylene, except for ethylene/propylene/1,4-hexadiene terpolymers	24-31
Test Method C -For all EPM and EPDM polymers between 35 and 85 mass % ethylene, using near infrared	24-31
ICS Codes	83.040.10 - Latex and raw rubber

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ASTM-D3900 2000

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