3D printing of carbon nanotubes reinforced thermoplastic polyimide composites with controllable mechanical and electrical performance

Ye, Wenli; Wu, Wenzheng; Hu, Xue; Guo, Lin; Guo, Jian-You; Qu, Han; Zhao, Ji

doi:10.1016/j.compscitech.2019.05.028

Cited by 63 publications

(37 citation statements)

References 32 publications

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“…Finally, very recently, numerous authors investigated the possibility to prepare conductive elements made with polymer nanocomposites via dry printing [58,59], inkjet printing [60,61] or 3D printing [62][63][64][65]. However, while such systems require new processing instruments, in some cases very expensive, polymer extrusion is easier and can keep low the costs of the produced parts, resulting to be useful for large scale applications such as building and construction sector.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Polypropylene/Carbon Nanotubes (PP/CNTs) Nanocomposites as Potential Strain Gauges for Structural Health Monitoring

et al. 2020

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Polypropylene/carbon nanotubes (PP/CNTs) nanocomposites with different CNTs concentrations (i.e., 1, 2, 3, 5 and 7 wt%) were prepared and tested as strain gauges for structures monitoring. Such sensors were embedded in cementitious mortar prisms and tested in 3-point bending mode recording impedance variation at increasing load. First, thermal (differential scanning calorimetry (DSC), thermo-gravimetric analysis (TGA)), mechanical (tensile tests) and morphological (FE-SEM) properties of nanocomposites blends were assessed. Then, strain-sensing tests were carried out on PP/CNTs strips embedded in cementitious mortars. PP/CNTs nanocomposites blends with CNTs content of 1, 2 and 3 wt% did not show significant results because these concentrations are below the electrical percolation threshold (EPT). On the contrary, PP/CNTs nanocomposites with 5 and 7 wt% of CNTs showed interesting sensing properties. In particular, the best result was highlighted for the PP/CNT nanocomposite with 5 wt% CNTs for which an average gauge factor (GF) of approx. 1400 was measured. Moreover, load-unload cycles reported a good recovery of the initial impedance. Finally, a comparison with some literature results, in terms of GF, was done demonstrating the benefits deriving from the use of PP/CNTs strips as strain-gauges instead of using conductive fillers in the bulk matrix.

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Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Polypropylene/Carbon Nanotubes (PP/CNTs) Nanocomposites as Potential Strain Gauges for Structural Health Monitoring

et al. 2020

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“…Reproduced with permission: Copyright 2019, John Wiley & Sons. 48 (B) The local enrichment strategy for FDM printing and the electrical conductivity of the printed part. Reproduced with permission: Copyright 2019, The Royal Society of Chemistry.…”

Section: D Printing For Electronic Conductive Devicesmentioning

confidence: 99%

“…(A) Schematic diagram of FDM printed CNTs‐based polymer composites. Reproduced with permission: Copyright 2019, John Wiley & Sons 48 . (B) The local enrichment strategy for FDM printing and the electrical conductivity of the printed part.…”

Section: D Printed Advanced Functional Polymeric Devicesmentioning

confidence: 99%

Current advances and future perspectives of additive manufacturing for functional polymeric materials and devices

Zhang

Kang

et al. 2021

SusMat

184

101

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Three-dimensional (3D) printing has received extensive attention due to its unique multidimensional functionality and customizability and has been recognized as one of the most revolutionary manufacturing technologies. Functional 3D printed products represent an important orientation for next-generation manufacturing and attract a great spotlight for the application in sensors, actuators, robots, electronics, and medical devices. However, the lack of functions of printing polymeric materials dramatically limits the development of functional 3D printing. Different from traditional processing, the physical properties, such as geometry and rheological behavior, of the polymeric materials must match the printing process, making the selection of printable materials limited. More importantly, challenges in large-scale production of such materials further stifle the development of functional 3D printing industry. In this review, we aim to outline recent advances in polymeric materials and methodologies for the functional 3D printing technology. The reports are classified based on functionalities, including electronic conductive, thermally conductive, electromagnetic interference shielding, energy storage, and energy harvesting materials. This study attempts to provide a comprehensive overview of the challenges and opportunities for 3D printing functional polymeric materials/devices, also seeks to enlighten the orientation of future research in this field.

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“…The use of low-cost conductive composite (Carbomorph) based on polycaprolactone with resistivity of 9-12 .cm is also limited for piezoresistive sensors at room temperature, or at lower temperature, due to melting temperature of polymer matrix (65 • C) (Leigh et al, 2012). In order to enlarge the application fields with high performance properties, especially for high temperature, a different approach was recently proposed with the processing and 3D printing up to 380 • C of thermoplastic polyimide (TPI) filled with CNT; the change of resistance under cyclic bending deformation were properly studied and considered for aerospace application (Ye et al, 2019). A commercial filament Proto-Pasta PLA filled with carbon black was 3D printed as a strain sensor (Munasinghe et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Fused Filament Fabrication of Piezoresistive Carbon Nanotubes Nanocomposites for Strain Monitoring

2020

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Conductive carbon nanotubes (CNT)/acrylonitrile butadiene styrene (ABS) nanocomposites parts were easily and successfully manufactured by fused filament fabrication (FFF) starting from composite filaments properly extruded at a laboratory scale. Specific specimens for strain monitoring application were properly evaluated in both short term and long term mechanical testing. In particular, samples of ABS filled with 6 wt.% of CNT were additively manufactured in two different infill patterns: HC (0 • /0 • ) and H45 (−45 • /+45 • ). The piezoresistivity behavior was investigated under various loading conditions such as ramp tensile tests at different rate and extension, and also creep and cyclic loading at room temperature. Experimental work revealed that the resistance changes in the conductive samples were properly detectable during stress or strain modification, as consequence of damage and/or reassembling of the percolation network. The measurement of the gauge factor in various testing conditions evidenced an initial higher sensitivity of the 3D-built parts within H45 pattern in comparison to the correspondent HC counterparts. The CNT conductive network path in the investigated samples seems to be reformed during creep and cycling experiments, showing a progressive reduction of gauge factor that seems to stabilize at about 2.5 for both HC and H45 samples after long term testing. These findings suggest that conductive CNT/ABS nanocomposites at 6 wt.% of loading can be successfully processed by FFF to produce stable strain sensors in the range −25 • and +60 • C, as confirmed by the constancy of resistivity in these temperatures.

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3D printing of carbon nanotubes reinforced thermoplastic polyimide composites with controllable mechanical and electrical performance

Cited by 63 publications

References 32 publications

Preparation and Characterization of Polypropylene/Carbon Nanotubes (PP/CNTs) Nanocomposites as Potential Strain Gauges for Structural Health Monitoring

Preparation and Characterization of Polypropylene/Carbon Nanotubes (PP/CNTs) Nanocomposites as Potential Strain Gauges for Structural Health Monitoring

Current advances and future perspectives of additive manufacturing for functional polymeric materials and devices

Fused Filament Fabrication of Piezoresistive Carbon Nanotubes Nanocomposites for Strain Monitoring

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