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Moisture adsorption and desorption behavior of raw materials for the t-rtm process

Herzog, Janek; Wendel, Rainer; Weidler, Peter G.; Wilhelm, Michael; Rosenberg, Philipp; Henning, Frank

Abstract:

The use of fiber reinforced plastics (FRPs) has significant potential to reduce the weight of components. As regards the sustainability of these components, thermoplastic matrices offer more potential for recycling than thermoset ones. A possible manufacturing process for the production of thermoplastic FRPs is thermoplastic resin transfer molding (T-RTM). In this very moisture-sensitive process, ε-caprolactam in addition to an activator and catalyst polymerizes anionically to polyamide 6 (aPA6). The anionic polymerization of aPA6 is slowed down or even completely blocked by the presence of water. This study analyses the sorption behavior of the matrix, fiber, binder and core materials for the production of anionic polyamide 6 composites, which are processed in the thermoplastic RTM process. Water vapor sorption measurements are used to determine the adsorption and desorption behavior of the materials. The maximum moisture loading of the materials provides information about the water adsorption capacity of the material. This knowledge is crucial for correct handling of the materials to achieve a fast process and good properties of the final product.


Verlagsausgabe §
DOI: 10.5445/IR/1000132368
Veröffentlicht am 07.05.2021
Originalveröffentlichung
DOI: 10.3390/jcs5010012
Scopus
Zitationen: 13
Dimensions
Zitationen: 13
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Funktionelle Grenzflächen (IFG)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2021
Sprache Englisch
Identifikator ISSN: 2504-477X
KITopen-ID: 1000132368
HGF-Programm 43.33.11 (POF IV, LK 01) Adaptive and Bioinstructive Materials Systems
Erschienen in Journal of Composites Science
Verlag MDPI
Band 5
Heft 1
Seiten Art.-Nr.: 12
Nachgewiesen in Dimensions
Scopus
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