scholarly journals Carbon Nanotube Reinforced Poly(ε-caprolactone)/Epoxy Blends for Superior Mechanical and Self-Sensing Performance in Multiscale Glass Fiber Composites

Polymers ◽  
2021 ◽  
Vol 13 (18) ◽  
pp. 3159
Author(s):  
Xoan F. Sánchez-Romate ◽  
Andrés Alvarado ◽  
Alberto Jiménez-Suárez ◽  
Silvia G. Prolongo

In this paper, a novel carbon nanotube (CNT) polycaprolactone (PCL), epoxy, and glass fiber (GF) composite is reported. Here, the nanoreinforced composites show a flexural strength increase of around 30%, whereas the interlaminar shear strength increases by 10–15% in comparison to unenhanced samples. This occurs because the addition of the CNTs induces a better PCL/epoxy/GF interaction. Furthermore, the nanoparticles also give novel functionalities to the multiscale composite, such as strain and damage monitoring. Here, the electrical response of the tensile- and compressive-subjected faces was simultaneously measured during flexural tests as well as the transverse conductivity in interlaminar tests, showing an exceptional capability for damage detection. Moreover, it was observed that the electrical sensitivity increases with PCL content due to a higher efficiency of the dispersion process that promotes the creation of a more uniform electrical network.

MRS Advances ◽  
2016 ◽  
Vol 1 (19) ◽  
pp. 1339-1344 ◽  
Author(s):  
Yan Li ◽  
Han Zhang ◽  
Ton Peijs ◽  
Emiliano Bilotti

ABSTRACTThree different methods are evaluated for the introduction of graphene nanoplatelets (GNP) in hierarchical carbon- or glass fiber reinforced plastics. They involve; (1) direct infusion of GNP filled epoxy resin, (2) spray coating of GNP on fiber preforms and (3) the use of dissolvable thermoplastic interleaf carrier films. Direct infusion of GNP filled resin is the easiest method to deliver GNP into composite laminates but may lead to viscosity and filtration issues. Automated spray coating was set up to manufacture GNP modified carbon- or glass fiber fabrics, while graphene filled phenoxy interleaf films were manufactured by bar coating, both followed by resin infusion using neat epoxy resin to produce GNP modified epoxy laminates, without the disadvantages of GNP filled resins. No substantial difference in interlaminar shear strength (ILSS) for composites manufactured using the different delivery methods is found. However, the electrical conductivity of the GNP modified glass-fiber composites manufactured by spray coating of glass fabrics is two orders of magnitude higher than for laminates made by direct infusion of GNP modified resin.


2021 ◽  
Vol 309 ◽  
pp. 01224
Author(s):  
Kuldeep Kumar ◽  
Prakhar Kumar Kharwar ◽  
Rajesh Kumar Verma

The glass-reinforced laminated composite is widely used in place of conventional structural materials. The glass fiber composites demonstrate outstanding strength in the uniaxial direction. The effect of carbon nanotube reinforcement percentage on the flexural strength of glass-reinforced polymer composites is investigated in this article. The flexural strength of the final laminates has been found to improve by reinforcing the Carbon nanotube. The small incorporation of MWCNT improves the flexural strength up to 51.3%. The 1.0 wt.% MWCNT reinforcement into GFRP shows the 51.3% improvement into flexural strength in comparison to GFRP composites. MWCNTs plays a prominent role to enhance the mechanical features of the developed samples. The SEM image is used to examine the nature and mechanics of failure. This study highlights the effect of carbon-based nanomaterial on the glass fiber reinforced epoxy composites.


Carbon ◽  
2011 ◽  
Vol 49 (10) ◽  
pp. 3382-3385 ◽  
Author(s):  
Limin Gao ◽  
Tsu-Wei Chou ◽  
Erik T. Thostenson ◽  
Zuoguang Zhang ◽  
Magali Coulaud

2017 ◽  
Author(s):  
Xoan F. Sánchez-Romate ◽  
Claudio Sbarufatti ◽  
Diego Scaccabarozzi ◽  
Simone Cinquemani ◽  
Alberto Jiménez-Suárez ◽  
...  

2021 ◽  
pp. 1-13
Author(s):  
Hamed Tanabi ◽  
A. Gencer Atasoy ◽  
Murat Demiral ◽  
Baris Sabuncuoglu

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