Tensile modulus modeling of carbon‐filled nylon 6,6 and polycarbonate‐based resins

Konell, Jeremiah P.; King, Julia A.; Miskioğlu, I.

doi:10.1002/app.12855

Cited by 13 publications

(18 citation statements)

References 24 publications

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“…(10)–(13)] appear to give reasonable results for SG/PP, CB/PP, and CNT/PP composites. This is consistent with that seen in the earlier study of Konell et al52 for carbon black and synthetic graphite fillers in nylon 6,6 and in polycarbonate resins. However, Keith et al61 found that for composites containing synthetic graphite in Vectra, the Halpin‐Tsai models performed the best, with the Nielsen model underpredicting the tensile modulus.…”

Section: Tensile Modulus Modelingsupporting

confidence: 93%

“…In Figure 6 it can be seen that higher concentrations of all carbon fillers in the polypropylene matrix caused an increase in the tensile modulus of the composite. This can be explained by the fact that the tensile modulus of the fillers is much higher than that of the neat polypropylene 49, 52–54. The adhesion between the filler and the matrix may also contribute to this effect, and will be described in a following subsection.…”

Section: Resultsmentioning

confidence: 99%

“…Based on the previous experimental results, the tensile modulus of polypropylene was 1500 MPa. In previous modeling research on nylon 6,6 and polycarbonate composites,52 the modulus of Thermocarb TC‐300 used was 827 GPa and the modulus of Ketjenblack EC‐600 JD was 827 GPa. The modulus of carbon nanotubes is available in the recent literature53, 54, 72, 73 and in the range of 900–1060 GPa.…”

Section: Tensile Modulus Modelingmentioning

confidence: 99%

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Effects of carbon fillers on tensile and flexural properties in polypropylene‐based resins

Gaxiola

Jubinski

Keith

et al. 2010

J of Applied Polymer Sci

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A potential application for conductive resins is in bipolar plates for use in fuel cells. The addition of carbon filler can increase the electrical and thermal conductivities of the polymer matrix but will also have an effect on the tensile and flexural properties, important for bipolar plates. In this research, three different types of carbon (carbon black, synthetic graphite, and carbon nanotubes) were added to polypropylene and the effects of these single fillers on the flexural and tensile properties were measured. All three carbon fillers caused an increase in the tensile and flexural modulus of the composite. The ultimate tensile and flexural strengths decreased with the addition of carbon black and synthetic graphite, but increased for carbon nanotubes/polypropylene composites due to the difference in the aspect ratio of this filler compared to carbon black and synthetic graphite. Finally, it was found that the Nielsen model gave the best prediction of the tensile modulus for the polypropylene based composites.

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Section: Tensile Modulus Modelingsupporting

confidence: 93%

Section: Resultsmentioning

confidence: 99%

Section: Tensile Modulus Modelingmentioning

confidence: 99%

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Effects of carbon fillers on tensile and flexural properties in polypropylene‐based resins

Gaxiola

Jubinski

Keith

et al. 2010

J of Applied Polymer Sci

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“…Figure shows the tensile modulus for the talc/CE composites along with the models discussed earlier. In the models described above, the following values were used .…”

Section: Resultsmentioning

confidence: 99%

Thermal, electrical, and mechanical properties of talc‐ and glass microsphere‐Reinforced Cycloaliphatic epoxy composites

et al. 2017

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Cycloaliphatic epoxy (CE) is used in high voltage and temperature applications because of its high glass transition temperature and resistance to ultraviolet, ozone, and hydrothermal aging mechanisms. Fillers can be used to increase the tensile modulus and thermal conductivity (TC) without a corresponding increase in electrical conductivity (1/electrical resistivity [ER]), which would be detrimental in a high voltage environment. In this study, two fillers were examined in a CE system: talc and glass microspheres (MS). Up to 20 wt% talc/CE and up to 40 wt% glass MS/CE composites were fabricated and tested for ER, TC, and tensile properties. As desired, all composites remained electrically resistive. Composite TC increased with increasing filler content from 0.15 W/m‐K for the neat epoxy to 0.25 W/m‐K for 20 wt% talc and for 40 wt% glass MS. This TC increase could be helpful to dissipate heat in high voltage and temperature applications. Tensile modulus increased from 2.7 GPa for the neat epoxy to 3.6 GPa for 20 wt% talc/CE and to 5.2 GPa for 40 wt% glass MS/CE composites. Increasing the tensile modulus is useful in the newly developed Polymer Core Composite Conductors that are used to transmit power. POLY COMPOS., 39:E1581–E1588, 2018. © 2017 Society of Plastic Engineers

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“…The Halpin‐Tsai model has been used to model the tensile modulus of composites containing CNT and GNP 26, 29–32. The Nielsen and Halpin‐Tsai models have been used to model tensile modulus of CB/nylon 6,6, CB/polypropylene, and CNT/polypropylene composites 33–37. Both of these models account for constituent properties, concentrations of each constituent, as well as aspect ratio, orientation, and packing of the filler 29, 33–35…”

Section: Introductionmentioning

confidence: 99%

Tensile modulus modeling of carbon black/polycarbonate, carbon nanotube/polycarbonate, and exfoliated graphite nanoplatelet/polycarbonate composites

Via

King

Keith

et al. 2011

J of Applied Polymer Sci

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Conductive fillers are often added to thermoplastic polymers to increase the resulting composite's electrical conductivity (EC) which would enable them to be used in electrostatic dissipative and semiconductive applications. The resulting composite also exhibits increased tensile modulus. The filler aspect ratio plays an important role in modeling composite EC, and tensile modulus. It is difficult to measure the filler aspect ratio after the manufacturing process (often extrusion followed by injection molding) in the composite, especially when nanomaterials are used. The EC percolation threshold is a function of the filler aspect ratio; hence, knowledge of this percolation threshold provides a means to extract the filler aspect ratio. In this study, the percolation threshold of the composite was determined from EC measurements and modeling, which in turn was used to determine the filler aspect ratio for tensile modulus modeling. Per the authors' knowledge, this approach has not been previously reported in the open literature. The fillers; carbon black (CB: 2-10 wt %), multiwalled carbon nanotubes (CNT: 0.5-8 wt %), or exfoliated graphite nanoplatelets (GNP: 2-12 wt %); were added to polycarbonate (PC) and the resulting composites were tested for EC and tensile modulus. With the filler aspect ratio determined from EC values for CNT/PC and GNP/PC composites, the three-dimensional randomly oriented fiber Halpin-Tsai model accurately estimates the tensile modulus for the CNT/PC composites and the Nielsen model predicts the tensile modulus well for the CB/PC and GNP/PC composites.

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Tensile modulus modeling of carbon‐filled nylon 6,6 and polycarbonate‐based resins

Cited by 13 publications

References 24 publications

Effects of carbon fillers on tensile and flexural properties in polypropylene‐based resins

Effects of carbon fillers on tensile and flexural properties in polypropylene‐based resins

Thermal, electrical, and mechanical properties of talc‐ and glass microsphere‐Reinforced Cycloaliphatic epoxy composites

Tensile modulus modeling of carbon black/polycarbonate, carbon nanotube/polycarbonate, and exfoliated graphite nanoplatelet/polycarbonate composites

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