Single Polymer Composites of Poly(Butylene Terephthalate) Microfibrils Loaded with Carbon Nanotubes Exhibiting Electrical Conductivity and Improved Mechanical Properties

The main aim of this work was the investigation of the possibility of replacing the heavy metallic meshes applied onto the composite structure in airplanes for lightning strike protection with a thin film of Tuball single-wall carbon nanotubes in the form of ultra-light, conductive paper. The Tuball paper studied contained 75 wt% or 90 wt% of carbon nanotubes and was applied on the top of carbon fibre reinforced polymer before fabrication of flat panels. First, the electrical conductivity, impact resistance and thermo-mechanical properties of modified laminates were measured and compared with the reference values. Then, flat panels with selected Tuball paper, expanded copper foil and reference panels were fabricated for lightning strike tests. The effectiveness of lightning strike protection was evaluated by using the ultrasonic phased-array technique. It was found that the introduction of Tuball paper on the laminates surface improved both the surface and the volume electrical conductivity by 8800% and 300%, respectively. The impact resistance was tested in two directions, perpendicular and parallel to the carbon fibres, and the values increased by 9.8% and 44%, respectively. The dynamic thermo-mechanical analysis showed higher stiffness and a slight increase in glass transition temperature of the modified laminates. Ultrasonic investigation after lightning strike tests showed that the effectiveness of Tuball paper is comparable to expanded copper foil.

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Effect of Coating of Carbon Nanotubes on Mechanical Properties of Polymer Composites: A Review

Materials Performance and Characterization ◽

10.1520/mpc20200159 ◽

2021 ◽

Vol 10 (1) ◽

pp. 20200159

Author(s):

Deepa Bedi ◽

Sumit Sharma ◽

Saurabh Kango ◽

Nitin Sharma ◽

Pramod Rakt Patel

Keyword(s):

Mechanical Properties ◽

Carbon Nanotubes ◽

Polymer Composites

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PLA/Carbon Nanotubes Multifilament Yarns for Relative Humidity Textile Sensor

Journal of Engineered Fibers and Fabrics ◽

10.1177/155892501100600302 ◽

2011 ◽

Vol 6 (3) ◽

pp. 155892501100600 ◽

Cited By ~ 7

Author(s):

Eric Devaux ◽

Carole Aubry ◽

Christine Campagne ◽

Maryline Rochery

Keyword(s):

Mechanical Properties ◽

Carbon Nanotubes ◽

Electrical Conductivity ◽

Relative Humidity ◽

Melt Spinning ◽

Flexible Sensor ◽

Spinning Process ◽

Textile Sensor ◽

Multifilament Yarns

Polylactide (PLA) was mixed with 4 wt.% of carbon nanotubes (CNTs) to produce electrical conductive multifilament yarns by melt spinning process for humidity detection. Thanks to a variation of electrical conductivity, this flexible sensor could detect the moisture presence. The introduction of plasticizer was necessary to ensure higher fluidity and drawability of the blend during the spinning process. The plasticizer modifies the crystallinity and the mechanical properties of the yarns. The effectiveness of this sensor (PLA/4 wt.% CNTs fibres) sensitive to humidity, is optimal when the spinning conditions are adapted. In this way, the temperature and the rate of the drawing roll were reduced. The influence of these parameters on the crystallinity, the mechanical properties and the sensitivity of the yarns were studied. Once the appropriate spinning conditions found, one humidity sensitive yarn was processed and the repeatability and efficient reversibility of its sensitivity were highlighted.

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Electrical and mechanical properties of aluminosilicate inorganic polymer composites with carbon nanotubes

Journal of Materials Science ◽

10.1007/s10853-009-3377-z ◽

2009 ◽

Vol 44 (11) ◽

pp. 2851-2857 ◽

Cited By ~ 48

Author(s):

Kenneth J. D. MacKenzie ◽

Matthew J. Bolton

Keyword(s):

Mechanical Properties ◽

Carbon Nanotubes ◽

Polymer Composites ◽

Inorganic Polymer

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The influence of functionalization time of carbon nanotube on the mechanical properties of the epoxy composites

Journal of Composite Materials ◽

10.1177/0021998317701988 ◽

2017 ◽

Vol 51 (12) ◽

pp. 1693-1701 ◽

Cited By ~ 4

Author(s):

EA Zakharychev ◽

EN Razov ◽

Yu D Semchikov ◽

NS Zakharycheva ◽

MA Kabina

Keyword(s):

Mechanical Properties ◽

Carbon Nanotubes ◽

Tensile Strength ◽

Elastic Modulus ◽

Carbon Nanotube ◽

Composite Materials ◽

Polymer Composites ◽

Epoxy Composites ◽

Multi Walled Carbon Nanotubes ◽

Walled Carbon Nanotubes

This paper investigates the structure, length, and percentage of functional groups of multi-walled carbon nanotubes (CNT) depending on the time taken for functionalization in HNO3 and H2SO4 mixture. The carbon nanotube content and influence of functionalization time on mechanical properties of polymer composite materials based on epoxy matrix are studied. The extreme dependencies of mechanical properties of carbon nanotube functionalization time of polymer composites were established. The rise in tensile strength of obtained composites reaches 102% and elastic modulus reaches 227% as compared to that of unfilled polymer. The composites exhibited best mechanical properties by including carbon nanotube with 0.5 h functionalization time.

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INNOVATIVE MANUFACTURING OF CARBON NANOTUBE-LOADED FIBRILLAR POLYMER COMPOSITES

International Journal of Modern Physics B ◽

10.1142/s021797921006509x ◽

2010 ◽

Vol 24 (15n16) ◽

pp. 2459-2465 ◽

Cited By ~ 16

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.

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