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Influence of Particle Size on Toughening Mechanisms of Layered Silicates in CFRP

DOI zum Zitieren der Version auf EPub Bayreuth: https://doi.org/10.15495/EPub_UBT_00005512
URN to cite this document: urn:nbn:de:bvb:703-epub-5512-1

Title data

Hutschreuther, Julia ; Kunz, Raphael ; Breu, Josef ; Altstädt, Volker:
Influence of Particle Size on Toughening Mechanisms of Layered Silicates in CFRP.
In: Materials. Vol. 13 (May 2020) Issue 10 . - No. 2396.
ISSN 1996-1944
DOI der Verlagsversion: https://doi.org/10.3390/ma13102396

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Project information

Project title:
Project's official titleProject's id
SFB 840 - Von partikulären Nanosystemen zur MesotechnologieNo information
Open Access PublizierenNo information

Project financing: Deutsche Forschungsgemeinschaft

Abstract

Carbon-fiber-reinforced epoxies are frequently used for lightweight applications that require high mechanical properties. Still, there is potential regarding the improvement of the interlaminar-fracture toughness. As matrix toughening with nanoparticles is one possibility, in this study two different layered silicates are used to reinforce carbon fiber composites. The first type is a synthetical K-Hectorite (K-Hect) with outstanding lateral extension (6 µm) that has shown high toughening ability in resins in previous work. The other is a commercial montmorillonite (MMT) with a smaller size (400 nm). The aim of this study is to show the influence of the particles on mode I and mode II fracture toughness, especially the influence of particle size. Therefore, double-cantilever-beam tests and end-notched-flexure tests were carried out. Additionally, the fracture mechanisms were investigated via scanning electron microscopy (SEM). It is concluded, that the larger Hectorite particles are beneficial for mode I fracture behavior because of enhanced toughening mechanisms. One the other hand, the mode II energy dissipation rate is increased by the smaller montmorillonite particles due to sufficient interaction with the formation of hackling structures.

Further data

Item Type: Article in a journal
Additional notes (visible to public): Special Issue Advances in Fiber-Reinforced Polymer Composites
Keywords: interlaminar-fracture toughness; layered silicate; carbon-fiber-reinforced composite; prepreg
DDC Subjects: 500 Science
500 Science > 540 Chemistry
600 Technology, medicine, applied sciences > 620 Engineering
600 Technology, medicine, applied sciences > 660 Chemical engineering
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Inorganic Chemistry I > Chair Inorganic Chemistry I - Univ.-Prof. Dr. Josef Breu
Faculties > Faculty of Engineering Science > Former Professors > Chair Polymer Materials - Univ.-Prof. Dr.-Ing. Volker Altstädt
Research Institutions
Research Institutions > Affiliated Institutes
Research Institutions > Affiliated Institutes > Bavarian Polymer Institute (BPI)
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Inorganic Chemistry I
Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Chair Polymer Materials
Faculties > Faculty of Engineering Science > Former Professors
Language: English
Originates at UBT: Yes
URN: urn:nbn:de:bvb:703-epub-5512-1
Date Deposited: 17 May 2021 08:58
Last Modified: 17 May 2021 08:58
URI: https://epub.uni-bayreuth.de/id/eprint/5512

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