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Durałek, Paweł
in Cooperation with on an Cooperation-Score of 37%
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Publications (8/8 displayed)
- 2024Using 3D printing technology to monitor damage in GFRPs
- 2024Field testing of low-cost particulate matter sensors for Digital Twin applications in nanomanufacturing processescitations
- 2024PBT-based polymer composites modified with carbon fillers with potential use of strain gauges
- 2024Electrically conductive and flexible filaments of hot melt adhesive for the fused filament fabrication process
- 2023Experimental analysis of the influence of thermoplastic veils doped with nanofillers on the thermal properties of fibre-reinforced composites
- 2020Characterization of thermoplastic nonwovens of copolyamide hot melt adhesives filled with carbon nanotubes produced by melt-blowing methodcitations
- 2018Comparison of properties of CFRPs containing nonwoven fabrics with carbon nanotubes, fabricated by prepreg and liquid technology
- 2018Nonwoven fabrics with carbon nanotubes used as interleaves in CFRPcitations
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article
Characterization of thermoplastic nonwovens of copolyamide hot melt adhesives filled with carbon nanotubes produced by melt-blowing method
Abstract
<p>Thermoplastic nonwovens containing 2.5 wt% of multi-walled carbon nanotubes were manufactured by half-industrial melt-blowing process from two copolyamides belonging to the group of hot melt adhesives having different melt-viscosities. The initial masterbatches have been analyzed by their rheological and thermal properties to adjust the appropriate conditions of melt-blowing process which allowed to manufacture the nonwovens without structural defects. It was found using a scanning electron microscope that in 10 wt% masterbatches fewer agglomerates of the multi-walled carbon nanotubes occurred in less viscous coPA2 and their average diameter measured by ImageJ was 60 µm. For more viscous coPA1 some oval agglomerates with even 270 µm diameters have been detected but during the extrusion they were destroyed. Microstructural observations of the nonwovens showed that fibers occur in the entangled state and their average diameter is around 45 µm for each type of the copolyamides. Analysis of the electrostatic properties of the nonwovens with low and high areal weight showed that electrical surface resistivity is slightly higher for the nonwovens based on coPA2 and those with higher areal weight. Using high-resolution microscope, it was possible to ascertain that in the nonwovens made of coPA1 + 2.5 wt% the carbon nanotubes are well-dispersed with their visible alignment along the fiber axis, unlike those in the nonwovens made of coPA2 + 2.5 wt% which occur mainly as lightly connected bundles without any specific orientation. The developed nonwovens can be used as interlayers to increase the electrical and mechanical properties of composite structures in the aerospace and automotive sectors.</p>