High strength toughened epoxy nanocomposite based on poly(ether sulfone)‐grafted multi‐walled carbon nanotube

Konnola, Raneesh; Nair, C. P. Reghunadhan; Joseph, Kuruvilla

doi:10.1002/pat.3602

Cited by 30 publications

(28 citation statements)

References 42 publications

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“…Although the mechanical properties and thermal stability were maintained, the high heat distortion temperature of TLCP resulted in the poor compatibility and processability. In recent years, toughing EP by thermoplastic engineering polymer has received much attention in the area of EP modification . The thermoplastic engineering polymer can continuously penetrate into the EP crosslinking network without scarifying the modulus and the thermal stability.…”

Section: Introductionmentioning

confidence: 99%

Synergistic effect of functional carbon nanotubes and graphene oxide on the anti-corrosion performance of epoxy coating

Long

et al. 2016

Polym. Adv. Technol.

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In this work, we reported the synergistic effect of functional carbon nanotubes (CNTs) and graphene oxide (GO) on the anticorrosion performance of epoxy coating. For this purpose, the GO and CNTs were firstly modified by the 3aminophenoxyphthalonitrile to realize the nitrile functionalized graphene oxides (GO-CN) and carbon nanotubes (CNTs-CN). As modified GO-CN and CNTs-CN were characterized and confirmed by Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, and gravimetric analyzer. It was found that about 19 and 24 wt% of 3-aminophenoxyphthalonitrile were grafted onto the surface of the GO and CNTs, respectively. The electrochemical impedance spectroscopy results showed that the GO-CN&CNTs-CN hybrid materials exhibit a remarkable superiority in enhancing the anticorrosion performance of epoxy coatings. Significant synergistic effect of the lamellar structural GO-CN and CNTs-CN on the anticorrosion performance of epoxy composite coatings was designed. Besides, the epoxy coating with 1 wt% of the GO-CN&CNTs-CN hybrid exhibited the best anticorrosion performance, in which the impedance showed the largest one (immersion in 3.5 wt% of NaCl solution for 168 hr).

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Section: Introductionmentioning

confidence: 99%

Synergistic effect of functional carbon nanotubes and graphene oxide on the anti-corrosion performance of epoxy coating

Long

et al. 2016

Polym. Adv. Technol.

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“…When the PES phase encountered the external force during the fracture process, the cracks were passivated, and the direction of the cracks had changed. This effect was beneficial to improve the performance of the composite; meanwhile, there are polar groups on the surface of O-MWCNTs and PES resin, and they would form a synergistic effect [23][24][25]. When the composite suffered external force, this synergistic effect would hinder the development of microcracks and absorb a quantity of energy to enhance the interaction between the phase interfaces.…”

Section: Resultsmentioning

confidence: 99%

Micromorphology and Mechanical and Dielectric Properties of Bismaleimide Composite Modified by Multiwalled Carbon Nanotubes and Polyethersulfone

Chen

Geng

Han

et al. 2018

Journal of Nanomaterials

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Multiwalled carbon nanotubes (MWCNTs) were modified by oxidizing agent to obtain O-MWCNTs, and the surface of it was coated with active group. 4,4′-Diaminodiphenylmethane bismaleimide (MBMI) was used as matrix, 3,3′-diallyl bisphenol A (BBA) and bisphenol-A diallyl ether (BBE) were used as reactive diluent, polyethersulfone (PES) as toughening agent, and O-MWCNTs as modifier; OMWCNT/PES-MBAE composite was prepared through in situ sol-gel method. The effect of PES and OMWCNTs on the mechanical and dielectric properties of composite was analyzed, and the microstructure was examined by transmission electron microscope (TEM) and scanning electron microscope (SEM). The mechanism of composite toughened by PES and OMWCNTs was observed and analyzed. The results showed that Diels-Alder reaction between MBMI and allyl compounds occurred completely and unsaturated double bond disappeared. O-MWCNTs and PES resin dispersed smoothly in polymer matrix and were used as reinforcement, and PES resin and O-MWCNTs could synergistically improve the properties of the composite and exhibited a typical ductile fracture. The impact and bending strengths were 16.09 kJ/m2 and 153.57 MPa, which were 74.32% and 53.08% higher than those of the MBAE matrix, respectively, and the dielectric constant and the dielectric loss were 3.76 (100 Hz) and 2.79 × 10−3 (100 Hz), when the content of PES was 2 wt% and O-MWCNTs was 0.02 wt%. The outstanding properties of the material made it play an important role in high-performance insulating material applications.

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“…CNTs are developing to be the more promising fillers . Many reports were involving modifications of epoxy resin with CNTs . Properties such as electrical and thermal conductivity of epoxy resin have been increased, whereas the reinforcing effect of storage modulus is less than expected …”

Section: Introductionmentioning

confidence: 99%

Selective localization of multi‐walled carbon nanotubes in epoxy/polyetherimide system and properties of the conductive composites

Wang

Zhang

et al. 2019

J of Applied Polymer Sci

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Multi-walled carbon nanotubes (MWCNTs) were introduced into the diglycidyl ether of a bisphenol A/polyetherimide (DGEBA/PEI) system. A co-continuous phase structure could be formed by the reaction-induced phase separation (RIPS). The MWCNTs localized selectively in PEI-rich phase which was predicted by theoretical calculations of the wetting coefficient (ω a ) and then confirmed both by optical microscopy and scanning electron microscopy. The thermomechanical properties of DGEBA/PEI/MWCNTs were studied by dynamic mechanical analysis. As the MWCNTs content increased from 0.5 to 1.0 wt %, storage modulus had a tendency of increasing monotonically from 2491 to 2948 MPa and the values of T g for epoxy-rich phase were almost unchanged at about 130 C. Subsequently, the result of electrical and thermal properties measurement for composites indicated that their volume resistivity decreased from 3.29 × 10 15 to 3.86 × 10 6 at 2.0 wt % MWCNTs and thermal conductivity were improved by 36.1% at the same time.

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High strength toughened epoxy nanocomposite based on poly(ether sulfone)‐grafted multi‐walled carbon nanotube

Cited by 30 publications

References 42 publications

Synergistic effect of functional carbon nanotubes and graphene oxide on the anti-corrosion performance of epoxy coating

Synergistic effect of functional carbon nanotubes and graphene oxide on the anti-corrosion performance of epoxy coating

Micromorphology and Mechanical and Dielectric Properties of Bismaleimide Composite Modified by Multiwalled Carbon Nanotubes and Polyethersulfone

Selective localization of multi‐walled carbon nanotubes in epoxy/polyetherimide system and properties of the conductive composites

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