Significantly improved shear, dynamic-mechanical, and mode II fracture performance of seawater aged basalt/epoxy composites: The impact of halloysite nanotube reinforcement
| Autor: | Ahmet Avcı, Volkan Eskizeybek, Hasan Ulus, Halil Burak Kaybal |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Toughness
Materials science Computer Networks and Communications 020209 energy Composite number Dynamic mechanical analysis (DMA) 02 engineering and technology engineering.material Seawater aging Halloysite Biomaterials Mode II delamination toughness (GIIC) 0202 electrical engineering electronic engineering information engineering Shear strength Halloysite nanotubes (HNTs) Composite material Civil and Structural Engineering Fluid Flow and Transfer Processes chemistry.chemical_classification Basalt fiber (BF) Mechanical Engineering 020208 electrical & electronic engineering Delamination Metals and Alloys Epoxy Polymer Epoxy (EP) Engineering (General). Civil engineering (General) Electronic Optical and Magnetic Materials chemistry Hardware and Architecture Basalt fiber visual_art engineering visual_art.visual_art_medium TA1-2040 |
| Zdroj: | Engineering Science and Technology, an International Journal, Vol 24, Iss 4, Pp 1005-1014 (2021) |
| ISSN: | 2215-0986 |
| DOI: | 10.1016/j.jestch.2021.01.005 |
| Popis: | The primary concern of fiber-reinforced polymers (FRPs) subjected to seawater environment is losing their initial mechanical performance since water can diffuse into the composite and deteriorates the fiber-matrix interface. Recent studies related to aging performance in the seawater environment have shown that introducing halloysite nanotubes (HNTs) into the polymer matrix offers a combination of an efficient barrier effect and an improved fiber-matrix interface. Hereupon, the principal objective of this study was to experimentally investigate the impact of HNTs on shear and mode II fracture performances of the seawater aged basalt fiber (BF) reinforced epoxy (EP) composites. After six months of aging in seawater, the findings indicated that HNTs reinforced multi-scale composites exhibited 34 and 46% higher shear strength and mode II delamination toughness compared to the neat specimens. Moreover, according to the dynamic-mechanical analysis, higher glass transition temperatures (8%) were obtained for the multi-scale composites. The reduction in mechanical performances induced by fiber-matrix interfacial degradation was also confirmed by scanning electron microscopy analysis. Chemical deterioration of the polymer matrix was explored by Raman spectroscopy to reveal the efficiency of HNTs induced barrier effect. As a result of these investigations, HNT modified BF/EP multi-scale composites were offered for future advanced engineering applications. |
| Databáze: | OpenAIRE |
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