It is easier to use a single value to compare different polymers with each other.
Therefore, for the viscosity commonly the MVR (melt volume-flow rate) is used.
This value describes how much mass of a polymer is flowing during 10 minutes at a specific temperature and pressure (mostly 2,16 kg or 5 kg) through a given capillary.
The measurement of the volume can be done directly during the experiment, therefore no additional step is necessary.
The higher the MVR, the smaller the viscosity of the polymer.
The used unit is cm^3/ 10 min.

Melt volume-flow rate in Plastic Industry


Plastic: Plastometer for the measurement of MFI and MVR.


Related topics:

Rheology

This glossary of plastic industry is provided by PLEXPERT Canada Inc.
Password Strength Very Weak
FORGOT PASSWORD ?
Lost your password? Please enter your username or email address. You will receive a link to create a new password via email.
We do not share your personal details with anyone.