ASTM D3900-95(2000)
Historical Standard: ASTM D3900-95(2000) Standard Test Methods for Rubber Raw-Determination of Ethylene Units in EPM (Ethylene-Propylene Copolymers) and EPDM (Ethylene-Propylene-Diene Terpolymers)
SUPERSEDED (see Active link, below)
ASTM D3900
1. Scope
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
| Sections | |
| Test Method A -For EPM and EPDM between 35 and 65 mass % ethylene | 8-13 |
| 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 C -For all EPM and EPDM polymers between 35 and 85 mass % ethylene, using near infrared | 24-31 |
1.1.2 Cast Film Test Methods:
| 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 |
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.
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
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/D3900-95R00
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