Interdiffusing core-shell nanofiber interleaved composites for excellent Mode I and Mode II delamination resistance
| Autor: | Dagmar R. D'hooge, Wim Van Paepegem, Lode Daelemans, Karen De Clerck, Nuray Kizildag |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
chemistry.chemical_classification
Technology and Engineering Materials science Delamination General Engineering Chemical modification 02 engineering and technology Adhesion Polymer Composite laminates 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences chemistry.chemical_compound chemistry Nanofiber Polyamide Polycaprolactone Ceramics and Composites Composite material 0210 nano-technology |
| Zdroj: | COMPOSITES SCIENCE AND TECHNOLOGY |
| ISSN: | 0266-3538 1879-1050 |
| DOI: | 10.1016/j.compscitech.2019.03.019 |
| Popis: | Electrospun nanofibre interleaving has a great potential for toughening of composite laminates as an effective, safe and industrially relevant method. Although many studies showcase large increases in delamination resistance, these are typically obtained under either Mode I or Mode II loading and for a wide variety of nanofibres. Here, we present a more general approach towards simultaneous excellent Mode I and Mode II delamination resistance using a single nanofibre system without the need for additional chemical modification steps or speciality polymers. It is illustrated based on the concept of interdiffusion of polycaprolactone nanofibres during the curing process into the epoxy matrix resin for improved adhesion. The results show that for a simultaneous increase in Mode I and Mode II delamination resistance, the adhesion and the fibre morphology of the nanofibres are crucial. The methodology is then expanded to allow for industrial relevant working windows by core-shell structured polyamide/polycaprolactone nanofibres. This approach results in a G I c of 650 ± 50 J m-2 (+ca. 60% vs. virgin material) and a G I I c of 3160 ± 35 J m-2 (+ca. 60% vs. virgin material). |
| Databáze: | OpenAIRE |
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