Effect of surfactant treatment on thermal stability and mechanical properties of CNT/polybenzoxazine nanocomposites

Kaleemullah, Muhammad; Khan, Shafi Ullah; Kim, Jang Kyo

doi:10.1016/j.compscitech.2012.08.020

Cited by 76 publications

(42 citation statements)

References 48 publications

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“…The rougher fracture surface provided a larger surface area for fracture energy absorption. [6b,34] Several pores left by the pulled‐out nanotubes suggested a moderate interfacial adhesion between the CNT sponge and the matrix. The visible parts of the CNT sponge show a remarkably longer length (on the order of micrometers) as compared to the separated CNTs observed in epoxy/CNT nanocomposites.…”

Section: Resultsmentioning

confidence: 99%

High‐Performance Epoxy Nanocomposites Reinforced with Three‐Dimensional Carbon Nanotube Sponge for Electromagnetic Interference Shielding

Chen

Zhang

Yang

et al. 2015

Adv Funct Materials

620

307

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Light‐weight and high‐performance electromagnetic interference (EMI)‐shielding epoxy nanocomposites are prepared by an infiltration method using a 3D carbon nanotube (CNT) sponge as the 3D reinforcement and conducting framework. The preformed, highly porous, and electrically conducting framework acts as a highway for electron transport and can resist a high external loading to protect the epoxy nanocomposite. Consequently, a remarkable conductivity of 148 S m−1 and an outstanding EMI shielding effectiveness of around 33 dB in the X‐band are achieved for the epoxy nanocomposite with 0.66 wt% of CNT sponge, which is higher than that achieved for epoxy nanocomposites with 20 wt% of conventional CNTs. More importantly, the CNT sponge provides a dual advantage over conventional CNTs in its prominent reinforcement and toughening of the epoxy composite. Only 0.66 wt% of CNT sponge significantly increases the flexural and tensile strengths by 102% and 64%, respectively, as compared to those of neat epoxy. Moreover, the nanocomposite shows a 250% increase in tensile toughness and a 97% increase in elongation at break. These results indicate that CNT sponge is an ideal functional component for mechanically strong and high‐performance EMI‐shielding nanocomposites.

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Section: Resultsmentioning

confidence: 99%

High‐Performance Epoxy Nanocomposites Reinforced with Three‐Dimensional Carbon Nanotube Sponge for Electromagnetic Interference Shielding

Chen

Zhang

Yang

et al. 2015

Adv Funct Materials

620

307

View full text Add to dashboard Cite

show abstract

“…While ever, some researchers used surfactants or coupling agents (such as KH570, KH550, etc.) to graft with CNTs, and then composited with resin matrix.…”

Section: Introductionmentioning

confidence: 99%

Core‐shell structure of carbon nanotube nanocapsules reinforced poly(lactic acid) composites

Liu

et al. 2017

J of Applied Polymer Sci

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In this study "core-shell" structure of carbon nanotube (CNT) nanocapsules, which aimed at toughening poly(lactic acid) (PLA) were designed by a synthetic strategy consisting of two reaction steps. The first step was to produce reactive chemical bond to bridge CNTs and PLA. So coupling agent KH570 was used to modify CNTs (CNTs-KH570). The second step involved ring open polymerization of lactide (LA). Lactide polymerized into PLA under catalysis and meanwhile grafted onto CNTs via KH570 (CNTs-KH570-PLA). Thus, the CNTs nanocapsules were constructed. Fourier transform infrared spectroscopy (FTIR) showed coupling agent KH570 succeeded in linking CNTs and PLA during LA polymerization. In addition, scanning electron microscopy (SEM) and transmission electron microscope (TEM) indicated CNTs dispersed homogeneous in PLA matrix and the compatibility between them was excellent. The mechanical test also suggested the designed nanocapsules had good effect on toughening PLA composites. This research found one economical and simple way to improve PLA mechanical properties and further broaden its application in many fields.

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“…In the polymer field, epoxy resins are well established thermosetting matrices of advanced composites, displaying a series of interesting characteristics such as good stiffness and specific strength, dimensional stability, chemical resistance and also strong adhesion to the embedded reinforcement . They are used as high grade synthetic resins in, for example, the electronics, aeronautics and astronautics industries and in surface coatings.…”

Section: Introductionmentioning

confidence: 99%

Physical study of room‐temperature‐cured epoxy/thermally reduced graphene oxides with various contents of oxygen‐containing groups

Hsu

Chang

et al. 2014

Polymer International

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In this study, the effects of different oxygen-containing group contents in thermally reduced graphene oxides (TRGs) for enhancing the physical properties of epoxy nancomposites was examined. The epoxy/TRG nanocomposites (ETNs) were prepared by a room temperature curing method in the presence of TRGs containing different oxygen-containing groups and were then characterized by Fourier transform infrared spectroscopy. TRG contents with higher oxygen-containing group contents (ca 33%) were found to show better dispersion capability in the epoxy matrix than TRGs with lower oxygen-containing group contents (ca 11%) based on morphological observations by transmission electron microscopy. The better dispersion capability of TRGs with higher oxygen-containing group contents in ETN membranes was found to lead to significantly enhanced mechanical strength, thermal stability and thermal conductivity based on measurements of dynamic mechanical analysis, tensile tests, thermogravimetric analysis and by the transient plane source technique.

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Effect of surfactant treatment on thermal stability and mechanical properties of CNT/polybenzoxazine nanocomposites

Cited by 76 publications

References 48 publications

High‐Performance Epoxy Nanocomposites Reinforced with Three‐Dimensional Carbon Nanotube Sponge for Electromagnetic Interference Shielding

High‐Performance Epoxy Nanocomposites Reinforced with Three‐Dimensional Carbon Nanotube Sponge for Electromagnetic Interference Shielding

Core‐shell structure of carbon nanotube nanocapsules reinforced poly(lactic acid) composites

Physical study of room‐temperature‐cured epoxy/thermally reduced graphene oxides with various contents of oxygen‐containing groups

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