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Open AccessArticle

Optical and Mechanical Properties of Highly Transparent Glass-Flake Composites

Chair of Ceramic Materials Engineering, Keylab Glasstechnology, University Bayreuth, 95447 Bayreuth, Germany
Deggendorf Institute of Technology, TAZ Spiegelau, 94518 Spiegelau, Germany
Department of Engineering Thermodynamics and Transport Processes (LTTT), Centre of Energy Technology (ZET), University of Bayreuth, 95447 Bayreuth, Germany
Author to whom correspondence should be addressed.
J. Compos. Sci. 2019, 3(4), 101;
Received: 29 October 2019 / Revised: 15 November 2019 / Accepted: 18 November 2019 / Published: 21 November 2019
(This article belongs to the Special Issue Mechanics of Innovative Materials in Engineering Applications)
In this paper, the dynamic mechanic and optical properties of composites made of Polyvinyl Butyral (PVB) and Micro Glass Flakes (MGF) with matching refractive indices (RIs) are investigated. The composite is produced by a slurry-based process using additional blade casting and lamination. It can be shown that a high degree of ordering of the MGF in the polymer matrix can be achieved with this method. This ordering, combined with the platelet-like structure of the MGF, leads to very efficient strengthening of the PVB with increasing content of the MGF. By carefully adjusting the RIs of the polymer, it is shown that haze is reduced to below 2%, which has not been achieved with irregular fillers or glass fibers. View Full-Text
Keywords: Micro Glass Flakes; PVB; Glass Particles; Transparent Composite Micro Glass Flakes; PVB; Glass Particles; Transparent Composite
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Scharfe, B.; Lehmann, S.; Gerdes, T.; Brüggemann, D. Optical and Mechanical Properties of Highly Transparent Glass-Flake Composites. J. Compos. Sci. 2019, 3, 101.

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