To what extent do oxygen and water vapor affect the melt index and color during plastic extrusion?
Thread Content
This post was last edited by QXZ-1966 on 2010-1-1 17:02. To what extent do oxygen and water vapor affect the melt index and color during plastic extrusion?
Oxygen and water are essential in people’s lives, but in the process of plastic processing, even trace amounts can bring about dramatic changes in the plastic! Color change, reduced impact and tensile properties! Deformation of the dimensions of the processed items! Damage to the mold. All in all, it brings endless disasters!
It accelerates degradation, increases the melt index, and worsens the color.
Is there anyone among the sea friends who can suggest ways to solve similar problems?
The melt index will improve; I’m not too sure about the color
It depends on your aging system; if the system is poor, the color will darken and the melt index will increase!