The test articles were then allowed to devolatilize
for 24 hours.
With the wood fully encapsulated in the plastic, maximum vacuum can be drawn at the vent zone to effectively devolatilize
the melt without drawing dry wood fiber through the vacuum system.
TGA experiments show also that oil shale does not devolatilize
completely until temperatures of about 540([+ or -] 10) [degrees]C are reached.
Twin screw extrusion systems are said to continuously mix and devolatilize
polymers with fillers and additives in combination with direct wire coating extrusion.
The temperature throughout the extruder was maintained at 180[degrees]C for zones 1-3, to thoroughly devolatilize
These are feeders that devolatilize
ingredients while feeding.
The twin-screw extruder can also be used to compound, react, devolatilize
, and--in one step--directly extrude a finished product such as film/sheet, fibers, profiles, and other special-purpose parts.
The TGA results suggest that different constituents of wood devolatilize
at different temperatures.
An additional downstream vent is required to devolatilize
A new series at twin-screw extrusion systems from Leistritz is designed to continuously mix and devolatilize
polymers with fillers and additives in combination with direct wire-coating extrusion.
Methanol was suggested as volatile component to devolatilize
styrene or styrene/acrylonitrile polymer under subatmospheric pressure, reducing the residual monomer content (87).
The extraction and compression sections devolatilize
the melt, while the metering/pumping section develops pressure ahead of the die.