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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

Format:	PDF
Name:	materials-13-02396.pdf
Version:	Published Version
Available under License	Creative Commons BY 4.0: Attribution

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Project information

Project title:	Project's official title Project's id SFB 840 - Von partikulären Nanosystemen zur Mesotechnologie No information Open Access Publizieren No 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 Colloids for Electrochemical Energy storage > Chair Chair Inorganic Colloids for Electrochemical Energy storage - 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 Colloids for Electrochemical Energy storage 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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