Effect of exfoliated graphite nanoplatelets on the fracture surface morphology and the electrical resistivity of phenylethynyl-terminated polyimide

Cho, Donghwan; Fukushima, Hiroyuki; Drzal, Lawrence T.

doi:10.5714/cl.2012.13.2.121

Cited by 7 publications

(2 citation statements)

References 18 publications

(22 reference statements)

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“…In recent years, many research efforts have been devoted to studying the effect of carbon nanoparticles, such as xGNP and carbon nanotubes, on the mechanical, thermal, and/or electrical properties of various polymers [80][81][82][83][84][85][86][87][88]. Fig.…”

Section: Effect Of Xgnp On the Electrical Resistivity Of Peti-5 [80]mentioning

confidence: 99%

Phenylethynyl-terminated polyimide, exfoliated graphite nanoplatelets, and the composites: an overview

Cho

Drzal²

2016

Carbon letters

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In efforts to characterize and understand the properties and processing of phenylethynylterminated imide (LaRC PETI-5, simply referred to as PETI-5) oligomers and polymers as a high-temperature sizing material for carbon fiber-reinforced polymer matrix composites, PETI-5 imidization and thermal curing behaviors have been extensively investigated based on the phenylethynyl end-group reaction. These studies are reviewed here. In addition, the use of PETI-5 to enhance interfacial adhesion between carbon fibers and a bismaleimide (BMI) matrix, as well as the dynamic mechanical properties of carbon/BMI composites, are discussed. Reports on the thermal expansion behavior of intercalated graphite flake, and the effects of exfoliated graphite nanoplatelets (xGnP) on the properties of PETI-5 matrix composites are also reviewed. The dynamic mechanical and thermal properties and the electrical resistivity of xGnP/PETI-5 composites are characterized. The effect of liquid rubber amine-terminated poly(butadiene-co-acrylonitrile) (ATBN)-coated xGnP particles incorporated into epoxy resin on the toughness of xGnP/epoxy composites is examined in terms of its impact on Izod strength. This paper provides an extensive overview from fundamental studies on PETI-5 and xGnP, as well as applied studies on relevant composite materials.Key words: polyimide, exfoliated graphite nanoplatelets, carbon fiber, composite, properties Phenylethynyl-Terminated Imide PolymerPolyimides have been extensively used in the electronics industry [1] as coatings, films, or adhesives and also in composite applications [2] as a primary or secondary structural material. When incorporated with organic or inorganic fibers, including carbon fibers and glass fibers, they can potentially be applied as a sizing material for high-temperature uses. In advanced applications, one of the most desirable advantages of polyimides, especially the aromatic polyimides, is their excellent high-temperature performance. Their thermal characteristics, including high temperature stability and cure behavior, are critical to successful processing and to the final properties of the resulting polyimide. For aerospace and aircraft applications, advanced polymer materials must successfully maintain their properties at high service temperatures over a long exposure time [3][4][5].The important parameters influencing the heat resistance of a polymeric material are its glass transition temperature (T g ), melting point (T m ), thermal stability, and etc., which may depend on its thermal history. Accordingly, polymers that are used to fulfill such high temperature performance should exhibit a high T g or T m and have excellent thermal stability. Even though some polyimides meet the high temperature requirement, their uses have been limited due to processing difficulties, such as poor solubility in common solvents, the release of volatiles, brittleness, and high processing temperature [6,7].Aromatic polyimides, especially acetylene or ethynyl-terminated polyimides, have been extensiv...

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Section: Effect Of Xgnp On the Electrical Resistivity Of Peti-5 [80]mentioning

confidence: 99%

Phenylethynyl-terminated polyimide, exfoliated graphite nanoplatelets, and the composites: an overview

Cho

Drzal²

2016

Carbon letters

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“…Recently, graphite nanoplatelets have had considerable attention in academia and a large number of papers have been dealing with this material . Carbon nanoparticles, such as carbon nanotubes and graphite nanoplatelets, have been frequently used as fillers to increase the thermal, mechanical, and electrical properties of polymers . However, their poor dispersibility in polymers has caused some difficulties in increasing the targeting properties, particularly in the cases of using a relatively large amount of carbon nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Elastomeric Coating of Exfoliated Graphite Nanoplatelets with Amine‐Terminated Poly(butadiene‐co‐acrylonitrile): Characterization and Its Epoxy Toughening Effect

Cho

Hwang

2013

Adv Polym Technol

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In the present study, exfoliated graphite nanoplatelets (EGN), which were prepared by means of microwave and ultrasonic processes from graphite intercalation compounds, were coated with a liquid rubber amine-terminated poly(butadiene-co-acrylonitrile) (ATBN) at various concentrations via ultrasonic and deep-freezing methods. The presence of ATBN coating on EGN particles was characterized by using multiple analytical tools such as X-ray photoelectron spectroscopy, energy dispersive X-ray spectroscopy, elemental analysis, X-ray diffractometer, thermogravimetric analyzer, and scanning electron microscope. The level of ATBN coating of the EGN particles strongly depended on the coating concentration, and it was clearly demonstrated. The characterization results were consistent with each other, indicating that the elastomeric coating of EGN with ATBN was performed successfully. The 1 wt% EGN coated with 10 wt% ATBN incorporated into epoxy increased the toughness of epoxy by 18%. It turns out that the elastomeric coating of EGN with ATBN effectively contributed to toughen epoxy with a very small amount of 0.1 wt% ATBN compared to the epoxy. C

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Simultaneous enhancement of impact toughness, mechanical properties and thermo-dimensional stability of epoxy composites by rubber-coated exfoliated graphite nanoplatelets

Hwang

Cho

2013

Fibers Polym

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Effect of exfoliated graphite nanoplatelets on the fracture surface morphology and the electrical resistivity of phenylethynyl-terminated polyimide

Cited by 7 publications

References 18 publications

Phenylethynyl-terminated polyimide, exfoliated graphite nanoplatelets, and the composites: an overview

Phenylethynyl-terminated polyimide, exfoliated graphite nanoplatelets, and the composites: an overview

Elastomeric Coating of Exfoliated Graphite Nanoplatelets with Amine‐Terminated Poly(butadiene‐co‐acrylonitrile): Characterization and Its Epoxy Toughening Effect

Simultaneous enhancement of impact toughness, mechanical properties and thermo-dimensional stability of epoxy composites by rubber-coated exfoliated graphite nanoplatelets

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