scholarly journals Study on enhancing effect of carbon nanotubes on the interlayer strength of 3D printing of plastic powder

AIP Advances ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 065106
Author(s):  
Guangzhao Li ◽  
Lajun Feng ◽  
Zhe Zhai ◽  
Fangfang Wang
Keyword(s):  
Carbon Nanotubes ◽  
3D Printing ◽  
Enhancing Effect ◽  
Plastic Powder

scholarly journals Complex Geometry Strain Sensors Based on 3D Printed Nanocomposites: Spring, Three-Column Device and Footstep-Sensing Platform

Nanomaterials ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1106
Author(s):  
Alejandro Cortés ◽  
Xoan F. Sánchez-Romate ◽  
Alberto Jiménez-Suárez ◽  
Mónica Campo ◽  
Ali Esmaeili ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
3D Printing ◽  
Complex Geometry ◽  
Uv Light ◽  
Shielding Effect ◽  
Strain Sensitivity ◽  
Printing Technology ◽  
3D Printing Technology ◽  
Sensing Platform ◽  
Electromechanical Performance

Electromechanical sensing devices, based on resins doped with carbon nanotubes, were developed by digital light processing (DLP) 3D printing technology in order to increase design freedom and identify new future and innovative applications. The analysis of electromechanical properties was carried out on specific sensors manufactured by DLP 3D printing technology with complex geometries: a spring, a three-column device and a footstep-sensing platform based on the three-column device. All of them show a great sensitivity of the measured electrical resistance to the applied load and high cyclic reproducibility, demonstrating their versatility and applicability to be implemented in numerous items in our daily lives or in industrial devices. Different types of carbon nanotubes—single-walled, double-walled and multi-walled CNTs (SWCNTs, DWCNTs, MWCNTs)—were used to evaluate the effect of their morphology on electrical and electromechanical performance. SWCNT- and DWCNT-doped nanocomposites presented a higher Tg compared with MWCNT-doped nanocomposites due to a lower UV light shielding effect. This phenomenon also justifies the decrease of nanocomposite Tg with the increase of CNT content in every case. The electromechanical analysis reveals that SWCNT- and DWCNT-doped nanocomposites show a higher electromechanical performance than nanocomposites doped with MWCNTs, with a slight increment of strain sensitivity in tensile conditions, but also a significant strain sensitivity gain at bending conditions.

scholarly journals Carbon Nanotubes Enabled Laser 3D Printing of High-Performance Titanium with Highly Concentrated Reinforcement

iScience ◽  
2020 ◽  
Vol 23 (9) ◽  
pp. 101498 ◽  
Author(s):  
Dongdong Gu ◽  
Hongyu Chen ◽  
Donghua Dai ◽  
Chenglong Ma ◽  
Han Zhang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
3D Printing ◽  
High Performance

scholarly journals Multifunctional biphenyl derivatives as photosensitisers in various types of photopolymerization processes, including IPN formation, 3D printing of photocurable multiwalled carbon nanotubes (MWCNTs) fluorescent composites

RSC Advances ◽  
2020 ◽  
Vol 10 (53) ◽  
pp. 32162-32182 ◽  
Author(s):  
Wiktoria Tomal ◽  
Anna Chachaj-Brekiesz ◽  
Roman Popielarz ◽  
Joanna Ortyl
Keyword(s):  
Carbon Nanotubes ◽  
3D Printing ◽  
Multiwalled Carbon Nanotubes ◽  
Multiwalled Carbon

Summary of properties and applications of multifunctional of biphenyl derivatives as photosensitisers in various types of photopolymerization processes, including IPN formation, 3D printing of photocurable multiwalled carbon nanotubes (MWCNTs) fluorescent composites.

INNOVATIVE MANUFACTURING OF CARBON NANOTUBE-LOADED FIBRILLAR POLYMER COMPOSITES

2010 ◽  
Vol 24 (15n16) ◽  
pp. 2459-2465 ◽  
Author(s):  
R. J. T. LIN ◽  
D. BHATTACHARYYA ◽  
S. FAKIROV
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Polymer Composites ◽  
Polyamide 66 ◽  
Screw Extruder ◽  
Enhancing Effect ◽  
The Matrix ◽  
Twin Screw ◽  
New Type ◽  
Scanning Electron

The concept of microfibrillar composite (MFC) has been used to create a new type of polymer composites, in which the reinforcing microfibrils are loaded with carbon nanotubes (CNT). Polyamide 66 (PA66) has been melt blended with polypropylene in a twin screw extruder with and without CNT, and thereafter cold drawn to create a fibrillar state as well as to align the CNT in the PA66 microfibrils. The drawn bristles were compression moulded at 180°C to prepare MFC plates. The scanning electron microscope (SEM) observations indicate near perfect distribution of CNT in the reinforcing PA66 microfibrils. Although the fibrillated PA66 is able to improve the tensile stiffness and strength as expected from the MFC structure, the incorporation of CNT does not exhibit any further enhancing effect. It rather adversely affects the mechanical properties due to poor interface adhesion between the matrix and the reinforcing microfibrils with the presence of CNT, as demonstrated by SEM. However, the resulting highly aligned CNT within the MFC are expected to affect the physical and functional properties of these composites.

scholarly journals Essential Nanostructure Parameters to Govern Reinforcement and Functionality of Poly(lactic) Acid Nanocomposites with Graphene and Carbon Nanotubes for 3D Printing Application

Polymers ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 1208 ◽  
Author(s):  
Rumiana Kotsilkova ◽  
Evgeni Ivanov ◽  
Vladimir Georgiev ◽  
Radost Ivanova ◽  
Dzhihan Menseidov ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Lactic Acid ◽  
3D Printing ◽  
Percolation Threshold ◽  
Structural Parameters ◽  
Electromagnetic Properties ◽  
Rheological Parameters ◽  
Poly Lactic Acid ◽  
Structure Property ◽  
Degree Of Dispersion

Poly(lactic) acid nanocomposites filled with graphene nanoplatelets (GNPs) and multiwall carbon nanotubes (MWCNTs) are studied, varying the filler size, shape, and content within 1.5–12 wt.%. The effects of the intrinsic characteristics of nanofillers and structural organization of nanocomposites on mechanical, electrical, thermal, and electromagnetic properties enhancement are investigated. Three essential rheological parameters are identified, which determine rheology–structure–property relations in nanocomposites: the degree of dispersion, percolation threshold, and interfacial interactions. Above the percolation threshold, depending on the degree of dispersion, three structural organizations are observed in nanocomposites: homogeneous network (MWCNTs), segregated network (MWCNTs), and aggregated structure (GNPs). The rheological and structural parameters depend strongly on the type, size, shape, specific surface area, and functionalization of the fillers. Consequently, the homogeneous and segregated network structures resulted in a significant enhancement of tensile mechanical properties and a very low electrical percolation threshold, in contrast to the aggregated structure. The high filler density in the polymer and the low number of graphite walls in MWCNTs are found to be determinant for the remarkable shielding efficiency (close to 100%) of nanocomposites. Moreover, the 2D shaped GNPs predominantly enhance the thermal conductivity compared to the 1D shaped MWCNTs. The proposed essential structural parameters may be successfully used for the design of polymer nanocomposites with enhanced multifunctional properties for 3D printing applications.

Electrohydrodynamic 3D printing of microscale poly ( ε -caprolactone) scaffolds with multi-walled carbon nanotubes

2017 ◽  
Vol 9 (1) ◽  
pp. 015007 ◽  
Author(s):  
Jiankang He ◽  
Fangyuan Xu ◽  
Ruonan Dong ◽  
Baolin Guo ◽  
Dichen Li
Keyword(s):  
Carbon Nanotubes ◽  
3D Printing ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

3D Printing of Carbon Nanotubes-Based Microsupercapacitors

2017 ◽  
Vol 9 (5) ◽  
pp. 4597-4604 ◽  
Author(s):  
Wei Yu ◽  
Han Zhou ◽  
Ben Q. Li ◽  
Shujiang Ding
Keyword(s):  
Carbon Nanotubes ◽  
3D Printing

3D Printing and Stretching Effects on Alignment Microstructure in PDMS/CNT Nanocomposites

2019 ◽  
Author(s):  
Blake Herren ◽  
Tingting Gu ◽  
Qinggong Tang ◽  
Mrinal Saha ◽  
Yingtao Liu
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
3D Printing ◽  
Pdms Substrate ◽  
Polymeric Matrices ◽  
Direct Ink Writing ◽  
Unique Approach ◽  
Writing Technology ◽  
Reinforcing Particle ◽  
Printing Parameters

Abstract The alignment of high aspect ratio reinforcing nanoparticles within a polymer matrix can have significant effects on the mechanical, electrical, and thermal properties of the nanocomposite. Therefore, in order to tailor the properties of the composite, it is imperative to develop novel methods to control the alignment of these filler particles in various polymeric matrices. This paper reports a unique approach to alter the alignment of carbon nanotubes (CNT) within polydimethylsiloxane (PDMS) nanocomposites using 3D printing technology. A line of the reinforced PDMS resin is printed on a PDMS substrate using direct ink writing technology, which can produce alignment in the print direction depending on printing parameters, the loading of the reinforcing particle, and the rheology of the ink. Then, the substrate is stretched and placed in an oven to cure the printed nanocomposites line with increased alignment in the stretch direction. These two techniques have the advantage of simplicity over other techniques and can efficiently manufacture nanocomposites with the alignment of nanoparticles. Optical microscopy will be used to quantify the alignment within the printed line. Electrical and mechanical properties will be tested to determine the effects of the different alignments within the elastomer. The ability to control the alignment of elastomeric CNT composites is advantageous for the growing field of polymer-based electronics.

Engineering gelatin-based alginate/carbon nanotubes blend bioink for direct 3D printing of vessel constructs

2020 ◽  
Vol 145 ◽  
pp. 262-271 ◽  
Author(s):  
Liying Li ◽  
Shuai Qin ◽  
Jun Peng ◽  
Ang Chen ◽  
Yi Nie ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
3D Printing
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