Effect of Carbon Nanotubes Upon Emissions From Cutting and Sanding Carbon Fiber-Epoxy Composites.
作者： William A Heitbrink , Li-Ming Lo , None
DOI: 10.1007/S11051-015-3140-0
关键词: Machining 、 Materials science 、 Nanocomposite 、 Epoxy 、 Carbon nanotube 、 Composite epoxy material 、 Particle 、 Fiber 、 Composite material 、 Graphite
摘要: Carbon nanotubes (CNTs) are being incorporated into structural composites to enhance material strength. During fabrication or repair activities, machining nanocomposites may release CNTs the workplace air. An experimental study was conducted evaluate emissions generated by cutting and sanding on three types of epoxy-composite panels: Panel A containing graphite fibers, B fibers carbon-based mat, C multi-walled CNTs. Aerosol sampling with direct-reading instruments, filter samples were collected for measuring elemental carbon (EC) fiber concentrations. Our results showed that a band saw did not generate detectable inspected transmission electron microscopy but increase particle mass, number, EC emission concentrations 20–80 % compared Panels B. Sanding operation performed two resulted in rates 1.9 × 108 2.8 106 per second (f/s), while no free aerosol detected from These CNT be health concern. However, analysis these same cannot clearly indicate presence CNTs, because extraneous generation composite epoxy increased mass EC.
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