ASTM D3900-15
Standard Test Methods for Rubber&x2014;Determination of Ethylene Units in Ethylene-Propylene Copolymers (EPM) and in Ethylene-Propylene-Diene Terpolymers (EPDM) by Infrared Spectrometry

Standard No.
ASTM D3900-15
Release Date
2015
Published By
American Society for Testing and Materials (ASTM)
Status
Replace By
ASTM D3900-17
Latest
ASTM D3900-17(2021)
Scope

4.1 These test methods can be used for determining which EPDM polymers are evaluated in the different compounds in Test Methods D3

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 mass8201;% 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:

 

8199;Sections

Test Method A—For EPM and EPDM between 35 and 70 mass8201;% ethylene

9 – 14

Test Method B—For EPM and EPDM between 60 and 85 mass8201;% ethylene, except for ethylene/propylene/1,4-hexadiene terpolymers

15 – 19

Test Method C—For all EPM and EPDM polymers between 35 and 85 mass8201;% ethylene, using near infrared

20 – 24

1.1.2 Cast Film Test Methods: