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Functionalization of Fiber Composites with Nanoparticle-Modified Resin Systems

Nanoparticles (NPs) provide a promising way to effectively improve the performance of fiber reinforced polymer (FRP) structures or introduce certain functionalities to them. In this thesis, the functionalization of FRPs with three representative NP systems with different chemical and physical characteristics (boehmite, silica and carbon nanotube) is comparatively investigated. Firstly, due to the interactions among the base components (NP, epoxy matrix and fiber reinforcement) and their influence on the process and the final properties, the critical material characteristics of each component and their interactions are systematically investigated. Moreover, the important processing aspects such as cure kinetics and rheology of the NP-modified epoxy matrix as well as the compaction behavior (global/local fiber volume fraction and macro/micro porosity) and permeability of the fiber preform considering the NP retention effect are critically studied and modeled. Furthermore, the NP-modified epoxy matrix systems show complex flow and retention behavior depending on the ratio of the critical particle size to macro/micro porosity of the preform. Therefore, different impregnation strategies – including in-plane (sequential and parallel injection) and out-of-plane methods – are investigated. The process development is supported by both experimental and simulation studies regarding the impregnation, as well as cure behavior of NP-modified epoxy resin systems, so that a faster and more robust process design can be guaranteed. Finally, the mechanical (focusing on critical matrix-dominated properties, i.e. interlaminar fracture toughness, flexural and interlaminar shear strength), thermal-mechanical and electrical properties of the FRPs regarding the different NP-epoxy systems are comparatively investigated. The results show a remarkable enhancement of these properties by the modification with NPs.

Lesen Sie die deutsche Zusammenfassung auf Kunststoffe.de
Author
 Dilmurat Abliz

Dilmurat Abliz
Fakultät für Natur und Materialwissenschaften
Technische Universität Clausthal

Information

Free keywords: Nanoparticle; Boehmite; Silica; Carbon nanotube (CNT); Fiber-reinforced polymer (FRP); liquid composite molding (LCM) process; Filament distance distribution; Permeability; Impregnation strategy; Cure kinetics and rheology; Flow and cure simulation; matrix-dominated properties
Institute / chair: Fakultät für Natur und Materialwissenschaften der Technischen Universität Clausthal
Language: English
Technical consultant for expert services: Professor Dr. rer. Nat. Albrecht Wolter, Professor Dr.-Ing. Gerhard Ziegmann, Professor Dr. rer. Nat. Alfred Weber, Professor Dr. Dichen Li
Publication year: 2017
Provider: Wissenschaftlicher Arbeitskreis Kunststofftechnik (WAK) / Kunststoffe.de

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