Enhanced Reaction Kinetics and Impact Strength of Cyanate Ester Reinforced with Multiwalled Carbon Nanotubes

Badrinarayanan, Prashanth; Leonard, Josh; Kessler, Michael R.

doi:10.1166/jnn.2011.3835

Cited by 14 publications

(16 citation statements)

References 25 publications

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“…Interestingly, a paper showed that an increase in reaction rate can lead to a decrease in glass transition temperature. 60 As pointed out in a series of papers, 61,63 to properly determine the effect of adding carbon nanotubes to dispersion-reaction systems requires confirmation that the reaction itself is not affected by nanotubes. Possible interference is certainly more critical for thermosetting resins, and more difficult to measure (and, in the case of functionalized tubes, can even depend on whether functionalization occurs at the tips or along the sidewalls!).…”

Section: Dynamics: Glass Transition and Diffusion Coefficientmentioning

confidence: 99%

Effects of carbon nanotubes on polymer physics

Grady

2012

J Polym Sci B Polym Phys

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A single carbon nanotube has many similarities with an individual polymer chain including the fact that the end-to-end length of both are often about the same and the diameter of the chain is about the same (for single-walled nanotubes) or only $10 to 20 times larger (for multiwalled nanotubes). The combination of the solid surface and the similarity of the two materials means that polymer physics are altered in manners not seen with any other type of commonly used filler. The purpose of this review is to update a chapter that appears in a recent tome by Grady (2011) and describe how polymer physics is altered in composites that contain carbon nanotubes. Subjects that will be discussed include chain configuration, glass transition, polymer diffusion, unit cells and crystalline superstructure (lamellae, spherulites and shishkebabs), and crystallization kinetics. V C 2012 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 50: 2012

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Section: Dynamics: Glass Transition and Diffusion Coefficientmentioning

confidence: 99%

Effects of carbon nanotubes on polymer physics

Grady

2012

J Polym Sci B Polym Phys

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“…These are chosen based on the stronger interfacial interaction with this resin as reported earlier. 20 CNTs are functionalized with OH/ COOH content of 5%. The Fourier Transform Infrared Spectroscopy (FTIR) spectra to conform the type of functionalization are provided by the supplier and for the multi-walled carbon nanotubes (CNTs), SEM and TEM images along with Raman spectrum are provided.…”

Section: Methodsmentioning

confidence: 99%

“…Out of the limited literature available dealing with cyanate ester nanocomposites, Wang et al 19 reported that cyanate ester resin infused with 2 wt% CNTs functionalized with epoxy groups improved the impact and flexural strength by nearly 40% and 50%, respectively. Badrinarayanan et al 20 reported the use of low viscosity cyanate ester resin and studied the effect of CNTs with OH and COOH functional groups. They found that the impact strength of the resin increased by 91% and 63% on incorporation of 1 wt% COOH and OH CNTs, respectively.…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties of CNT–Bisphenol E cyanate ester-based CFRP nanocomposite developed through VARTM process

Rao

Renji

Bhat

et al. 2015

Journal of Reinforced Plastics and Composites

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This paper reports on the effect of multiwall carbon nanotubes (CNTs) without and with chemical functionalization on the mechanical properties of Bisphenol E cyanate ester resin (BECy) based carbon fibre reinforced plastic (CFRP) laminated composites. BECy with its low viscosity, low moisture uptake and superior mechanical properties is selected for its application in CFRP laminates through the cost-effective Vacuum Assisted Resin Transfer Moulding (VARTM) process. However, unlike CNT-epoxy-CFRP composites, processing and performance issues such as dispersion of CNTs, chemical bonding with resin, functionalization effects, effects on mechanical properties, etc. for BECy-CNT-CFRP composite system are not well reported. The objective of this study is to improve the mechanical properties of BECy resin with small additions of CNTs and functionalized CNTs in CFRP laminates. CNTs and fCNTs are infused into BECy using ultrasonication and standard mixing methods. Improvements in Young's modulus and strength in tension, compression, shear, flexure and interlaminar shear strength are analysed. It is observed that addition of 0.5 wt% CNTs effected for maximum mechanical properties of the resin and 1 wt% CNTs for the mechanical properties of CNT-CFRP nanocomposite. Further, improvements obtained with fCNTs are marginal. Dispersion behaviour and effect of CNTs/ fCNTs in load transfer corroborated with SEM pictures are presented. The enhanced mechanical properties realized in VARTM processing of BECy-CFRP laminate indicate clear advantage of CNT based modification of the process.

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“…The catalytic function of ZIF‐61 in the curing process of bisphenol A cyanate ester is induced by the Lewis acidity of ZIF‐61 which has an unoccupied orbital on the Zn atom . Multiwalled carbon nanotubes containing hydroxyl groups have exhibited the most dramatic catalytic effect on the polymerization of bisphenol E cyanate ester (CE) resin . 2,5‐Dihydroxyphenyl‐9,10‐dihydro‐9‐oxa‐10‐phosphaphenanthrene‐10‐oxide (DPDP) decreased the curing peak of the DPDP/CE system by 21–76 °C compared with that of the CE resin .…”

Section: Introductionmentioning

confidence: 99%

Catalytic effect of poly(silicon‐containing arylacetylene) with terminal acetylene on the curing reaction and properties of a bisphenol A type cyanate ester

Cai

Yuan

Huang

2018

Polymer International

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Bisphenol A dicyanate ester (BADCy) was blended with an acetylene‐terminated poly(silicon‐containing arylacetylene) (PSA‐E) with acidic terminal acetylene groups to prepare a modified cyanate ester (BADCy/PSA‐E) via solution and evaporation. The curing reaction of the BADCy/PSA‐E was studied by DSC and in situ infrared monitoring. The curing initial temperature and peak temperature of the blended resin decreased by up to 95 and 57 °C, respectively. The PSA‐E could catalyze the curing reaction of BADCy. The thermal, dielectric and mechanical properties of the cured blended resins were further evaluated. The temperature at 5% mass loss of the cured blended BADCy with 20% mass fraction of PSA‐E increased from 361 to 426 °C, although the glass transition temperature (Tg) of the cured blended resin remained at 270 °C. The cured BADCy/PSA‐E blended resin exhibited a good thermal stability. The dielectric loss factor and mechanical properties of the cured BADCy decreased upon addition of the PSA‐E resin. However, the flexural strength and impact strength of the cured blended BADCy/PSA‐E resin exhibited values of 95 MPa and 21 kJ m−2, respectively. © 2018 Society of Chemical Industry

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Enhanced Reaction Kinetics and Impact Strength of Cyanate Ester Reinforced with Multiwalled Carbon Nanotubes

Cited by 14 publications

References 25 publications

Effects of carbon nanotubes on polymer physics

Effects of carbon nanotubes on polymer physics

Mechanical properties of CNT–Bisphenol E cyanate ester-based CFRP nanocomposite developed through VARTM process

Catalytic effect of poly(silicon‐containing arylacetylene) with terminal acetylene on the curing reaction and properties of a bisphenol A type cyanate ester

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