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

Importancia y uso:

4.1 These test methods can be used for determining which EPDM polymers are evaluated in the different compounds in Test Methods D3568.

4.2 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.

Subcomité:

D11.11

Referida por:

D6047-17R21, D3568-03R22

Volúmen:

09.01

Número ICS:

83.040.10 (Latex and raw rubber)

Palabras clave:

ethylene–propylene copolymers; ethylene–propylene–diene terpolymers; infrared;