Thermo‐viscoelastic behavior of PCNF‐filled polypropylene nanocomposites

Frormann, Lars; Iqbal, Azhar; Abdullah, Sukarnur Che

doi:10.1002/app.27349

Cited by 13 publications

(22 citation statements)

References 49 publications

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“…The calculated degree of crystallinity of the PP phase increased with increasing content of both nanoparticles, indicating that the nanofillers nucleated the crystallization process. (Frormann et al, 2008) This implies that the existence of nanoparticles facilitates the crystallization of PP and this effect becomes more evident with higher nanoparticle content (Zhao & Li, 2006). Similar results for PP/CaCO3 nanocomposites, PP/carbon nanotube composites and PP/nanoclay composites (Han & Fina , 2011;Frormann et al, 2008;Vakili et al, 2011) have been reported.…”

Section: Differential Scanning Calorimetry (Dsc)supporting

confidence: 70%

“…(Frormann et al, 2008) This implies that the existence of nanoparticles facilitates the crystallization of PP and this effect becomes more evident with higher nanoparticle content (Zhao & Li, 2006). Similar results for PP/CaCO3 nanocomposites, PP/carbon nanotube composites and PP/nanoclay composites (Han & Fina , 2011;Frormann et al, 2008;Vakili et al, 2011) have been reported. However there are some contradicting results in the literature (Zhao & Li, 2006 Table 3.…”

Section: Differential Scanning Calorimetry (Dsc)supporting

confidence: 70%

“…The increase in TC for ZnO nanoparticles is more than CaCO 3 due to the nature of nanofiller and also crystallinity degree regarding to DSC results (Table 3). These increases in TC for both nanoparticles are higher than that of reported values for CNF in a PP matrix (Frormann et al, 2008).…”

Section: Thermal Conductivity Measurementcontrasting

confidence: 67%

“…In the concentration of 15 wt% no model could predict well the TC values and all of the mentioned models underestimated the TC values of nanocomposite whereas in the case 5 wt% all models overestimated the TC values. This fact can be attributed to the intrinsic thermal conductivity of both nanoparticles and their large surface area which even at lower loadings of nanofillers they are still effective to transfer heat through the samples (Frormann et al, 2008). At a higher volume fraction, this effect becomes stronger.…”

Section: Thermal Conductivity Measurementmentioning

confidence: 99%

“…In the case of 15 wt% other models underestimated the TC values of nanocomposites except for the Ce Wen Nan model, whereas for 5 wt% all models overestimated the TC value. The predicted TC values by the models depend on the nature of nanofiller and their relative concentrations (Weidenfeller et al, 2004;Frormann et al, 2008 …”

Section: Thermal Conductivity Measurementmentioning

confidence: 99%

See 4 more Smart Citations

Thermal Conductivity of Nanoparticles Filled Polymers

Ebadi‐Dehaghani¹,

Nazempour²

2012

Smart Nanoparticles Technology

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Section: Differential Scanning Calorimetry (Dsc)supporting

confidence: 70%

Section: Differential Scanning Calorimetry (Dsc)supporting

confidence: 70%

Section: Thermal Conductivity Measurementcontrasting

confidence: 67%

Section: Thermal Conductivity Measurementmentioning

confidence: 99%

Section: Thermal Conductivity Measurementmentioning

confidence: 99%

See 3 more Smart Citations

Thermal Conductivity of Nanoparticles Filled Polymers

Ebadi‐Dehaghani¹,

Nazempour²

2012

Smart Nanoparticles Technology

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Effect of Cis‐13‐docosenamide in the Properties of Compatibilized Polypropylene/Clay Nanocomposites

Moreira

Alves

Barbosa

et al. 2016

Macromolecular Symposia

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The importance of obtaining materials with better properties than the pure polymer is increasing worldwide. A strategy often used to obtain better properties is the use of reinforcing fillers in the nanoscale. In this paper, polypropylene (PP) and organophilic montmorillonite (OMMT) nanocomposites were prepared, using maleic anhydride grafted polypropylene (PP-g-MA) as compatibilizer in concentrations of 3%, 5%, 15% and 22.5% and erucamide as cointercalant in concentrations of 0.3%, 0.5%, 1% and 1.5%. The nanocomposites were prepared by the melt intercalation method with a single screw extruder. The influence of the concentration of the compatibilizer and the cointercalant on morphological and mechanical properties of the materials were examined by X-ray diffraction, tensile test and Fourier transform infrared. The XRD results showed that the level of intercalation and/or exfoliation rises with the increase of additive concentrations, best outcomes were obtained from systems with smaller and greater percentages of clay, compatibilizer and cointercalant. The mechanical tests did not show significant rises when the concentration of PP-g-MA and erucamide increased. From the FTIR results, characteristic bands of the material and its possible interactions and intercalations were observed.

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Industrial Applications Perspective of Nanodielectrics

Tuncer¹,

Sauers²

2009

Dielectric Polymer Nanocomposites

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The field of nanodielectrics has had a significant impact on voltage endurance characteristics of electrical insulation. Improved time-tobreakdown behavior, resulting in reduced aging of insulation, and enhanced thermal stability are of considerable importance in industrial applications. This chapter discusses several specific aspects of nanodielectrics and their role in the future of electrical insulation and dielectric sciences. IntroductionOne should not forget that power technology-high-voltage apparatus, transmission, and most electrical components-could not exist without satisfactory electrical insulation. It is a challenging task to design and optimize an electrical insulation system while energy demand, voltage levels, and operating temperatures are either increasing in conventional applications or decreasing to cryogenic temperatures in superconducting applications. In addition, these * Research sponsored by the U.S. Department of Energy-Office of Electricity Delivery and Energy Reliability, Superconductivity Program for Electric Power Systems under contract DEAC05-00OR22725 with Oak Ridge National Laboratory, managed and operated by UT-Battelle, LLC.2 electrical components and equipment sizes are becoming smaller and more compact than conventional devices, placing greater demands on the insulation. New insulation materials are expected to have better endurance and to have better reliability than their conventional counterparts. Recent developments in composite materials filled with nanometer-size particles (defined here as particles in which at least one dimension is in the range 1-100 nm) have shown some interesting results, creating a new research field in electrical insulation being referred to as nanodielectrics (Lewis 1994;Lewis 2006;Nelson and Fothergill 2004;Cao et al. 2004).A detailed description of dielectrics for high-voltage applications was provided in earlier work by Dakin (1978). In this chapter, our discussion will focus on recent developments in the field of nanodielectrics. Only solid insulation materials composed of nanoparticle-loaded polymers will be considered here. The chapter is organized as follows. Different aspects of the nanodielectrics will be considered starting with the background and challenges faced in synthesizing nanocomposites. Some of the significant advantages of the nanodielectrics and their impact on electrical insulation industry are then discussed in the context of dielectric breakdown and voltage endurance. Nanodielectric applications at high and low temperatures together with specific device/component applications are discussed as well.

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Thermo‐viscoelastic behavior of PCNF‐filled polypropylene nanocomposites

Cited by 13 publications

References 49 publications

Thermal Conductivity of Nanoparticles Filled Polymers

Thermal Conductivity of Nanoparticles Filled Polymers

Effect of Cis‐13‐docosenamide in the Properties of Compatibilized Polypropylene/Clay Nanocomposites

Industrial Applications Perspective of Nanodielectrics

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