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Title: Water sorption, thermal, and fire resistance properties of natural shell-based epoxy composites
Authors: Zamani, Kianoosh
Kocaman, Süheyla
Işık, Murat
Soydal, Ülkü
Özmeral, Nimet
Ahmetli, Gülnare
Keywords: composite
epoxy resin
natural shell
Contact angle
Epoxy composites
Fire resistance
Shells (structures)
Thermogravimetric analysis
Epoxy composite
Epoxy composite materials
Fire resistance properties
Hazelnut shells
Mussel shells
Natural shell
Solid products
Walnut shells
Water sorption
Epoxy resins
Publisher: John Wiley and Sons Inc
Abstract: In this study, walnut shell (WSh), hazelnut shell (HSh), and mussel shell (MSh) waste as inexpensive reinforcements were recycled for the preparation of epoxy composite materials. Subsequent used inexpensive fillers are chars (WShC and HShC), which are the pyrolysis solid products of the natural WSh and HSh wastes. Three types of epoxy resins: bisphenol-A type (DGEBA), modified with polyurethane (MER with PU), and rubber modified (MER with rubber) epoxy resins were used as the matrix in MSh composites. Thermogravimetric analysis of the composites showed that the thermal strength of the epoxy matrix increased significantly with the MSh and chars. The best water sorption results were obtained with the MSh. The contact angle values of MSh composites prepared with DGEBA epoxy resin were quite high (111°–113.5°) and their water retention values ranged from 0.2% to 0.32%. The composites that were produced using 50 wt% chars and the same epoxy resin showed better flammability stability. The full extinction times were determined as 63 and 58 s for WShC and HShC composites, respectively. © 2022 Wiley Periodicals LLC.
ISSN: 0021-8995
Appears in Collections:Mühendislik ve Doğa Bilimleri Fakültesi Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collections

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