Filtern
Erscheinungsjahr
Dokumenttyp
- Beitrag zu einem Tagungsband (26) (entfernen)
Schlagworte
- DMA (3)
- Ultrasound (3)
- Dichtungen (2)
- Elastomere (2)
- High pressure DSC (2)
- Phenolic resin (2)
- Post curing (2)
- Reaction kinetic (2)
- Tieftemperaturverhalten (2)
- Compositbauteil (1)
Das Fließ-Härtungs-Verhalten von Duroplastformmassen wird gegenwärtig nur
unvollständig durch empirische Größen beschrieben. Diese ungenauen und
unsicheren Angaben können zu Schwierigkeiten bei der optimalen Einstellung
der Fertigungsmaschinen des Verarbeiters führen. Insbesondere Veränderungen
der Formmasseeigenschaften während des Transportes und der Lagerung stören
die Produktion. Das vorgestellte Messverfahren mit Ultraschall-sensoren ermöglicht
die schnelle und vollständige Erfassung des Fließ-Härtungs-Verhaltens, auch
während des technologischen Prozesses. Experimentelle Ergebnisse zu
Alterungs-erscheinungen dieser Formmassen illustrieren den Nutzen des
Verfahrens für Formmasse-produzenten und -verarbeiter.
Making Cure Visible
(2005)
The prospects of modern thermoanalytical methods for characterisation
of flow, curing and final mechanical behaviour of
moulding compounds were demonstrated. Using urea resin
moulding compounds from different manufacturers the possibilities
of the various techniques could be shown. With comparatively
low effort, fundamental information can be gained
before production process had been started. On this basis it is
possible to make appropriate material selection at an early
point in the process chain. On the basis of thermoanalytical
data an incoming goods inspection can be established. Also it
is easy to control the compliance with the conditions of delivery.
In some cases it could also be helpful to have stored analysis
data especially when problems appear in manufacturing
process or unexpected part damages occur
With the ultrasound measuring system it is possible to transfer
the findings from the analytical methods directly to the processes
in the mould. The application of ultrasound provides
Dynamic Mechanical Analysis in the mould. Beside quality
assurance ultrasound can also be used for process optimisation,
especially for reduction of cycle time. In an advanced form
ultrasound information can be used as a basis for improved
machine control based on material state. The ultrasound measuring
system developed by ISK Iserlohn and BAM can be
obtained from the ISK.