Title :
THz spectroscopy for the inline control of polymeric compounding processes
Author :
Krumbholz, N. ; Hochrein, T. ; Vieweg, N. ; Hasek, T. ; Kretschmer, K. ; Bastian, M. ; Koch, M.
Author_Institution :
Inst. fuer Hochfrequenztech., Tech. Univ. Braunschweig, Braunschweig
Abstract :
We present non-destructive and contactless inline measurements on the molten polymer polypropylene and on the polymeric compound polypropylene-CaCO3 carried out with a THz spectrometer. The effect of temperature and pressure on the THz properties of the molten polymeric material is investigated. Additionally, we analyze the additive content of the compound during the extrusion processing and compare this data with offline results. Further measurements on wood plastic composites demonstrate the capability of detecting the degree of dispersion of compounds with THz-spectroscopy.
Keywords :
calcium compounds; ecocomposites; extrusion; filled polymers; nondestructive testing; polymers; terahertz wave spectra; wood; THz spectroscopy; contactless inline measurement; extrusion processing; molten polymer polypropylene; nondestructive measurement; polymeric compound; wood plastic composites; Additives; Dielectric measurements; Dispersion; Gravity; Plastics; Polymers; Pressure measurement; Refractive index; Spectroscopy; Temperature;
Conference_Titel :
Infrared, Millimeter and Terahertz Waves, 2008. IRMMW-THz 2008. 33rd International Conference on
Conference_Location :
Pasadena, CA
Print_ISBN :
978-1-4244-2119-0
Electronic_ISBN :
978-1-4244-2120-6
DOI :
10.1109/ICIMW.2008.4665528