Polymer‐Carbon Nanotube Nanocomposite Foams

Antunes, Marcelo; Velasco, José Ignácio

doi:10.1002/9781118945964.ch8

Cited by 3 publications

(2 citation statements)

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“…Most importantly, metals mainly protect from EMI by means of reflection, hence being out of use in applications where EMI absorption is required, as for instance in stealth technology [294][295]. Electrically conductive polymer composites could come as a possible alternative [296]. Among these, polymer nanocomposites containing carbon-based nanofillers have been gaining…”

Section: Electromagnetic Interference Shielding Efficiency (Emi Se)mentioning

confidence: 99%

Recent advances in carbon-based polymer nanocomposites for electromagnetic interference shielding

Abbasi

Antunes

Velasco

2019

Progress in Materials Science

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590

274

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Carbon-based nanoparticles have recently generated a great attention, as they could create polymer nanocomposites with enhanced transport properties, overcoming some limitations of electrically-conductive polymers for high demanding sectors. Particular importance has been given to the protection of electronic components from electromagnetic radiation emitted by other devices. This review considers the recent advances in carbon-based polymer nanocomposites for electromagnetic interference (EMI) shielding. After a revision of the types of carbon-based nanoparticles and respective polymer nanocomposites and preparation methods, the review considers the theoretical models for predicting the EMI shielding, divided in those based on electrical conductivity, models based on the EMI shielding efficiency, on the so-called parallel resistor-capacitor model and those based on multiscale hybrids. Recent advances in the EMI shielding of carbon-based polymer nanocomposites are presented and related to structure and processing, focusing on the effects of nanoparticle's aspect ratio and possible functionalization, dispersion and alignment during processing, as well as the *Manuscript 2 use of nanohybrids and 3D reinforcements. Examples of these effects are presented for nanocomposites with carbon nanotubes/nanofibres and graphene-based materials. A final section is dedicated to cellular nanocomposites, focusing on how the resulting morphology and cellular structures may generate lightweight multifunctional nanocomposites with enhanced absorption-based EMI shielding properties.

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Section: Electromagnetic Interference Shielding Efficiency (Emi Se)mentioning

confidence: 99%

Recent advances in carbon-based polymer nanocomposites for electromagnetic interference shielding

Abbasi

Antunes

Velasco

2019

Progress in Materials Science

Self Cite

590

274

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“…Thus it is observed that with the addition of the GTR, the conductive behavior of almost all polymers tends to converge, except for the case of the PA, which remains two orders of magnitude above the rest of the polymers analyzed, that is, for the 40-50%, PA: 4.95 × 10 −13 and 1.73 × 10 −12 S/cm, and for the rest of the polymers, 10 −15 S/ cm, and in the case of ABS and PS, for the 40% of GTR, they reach conductivities of 1.05 × 10 −14 and 1.32 × 10 −14 S/cm, respectively. These results can be interpreted as worse electrical behavior composites than others' experiences with carbon black (CB) [28,29].…”

Section: Comparison Of Conductivities and Loss Tangent (Tg Of δ)mentioning

confidence: 97%

Comparison of Mechanical and Electrical Characteristics of Various Polymers Blended with Ground Tire Rubber (GTR) and Applications

et al. 2019

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The massive manufacture of tires and the difficulty of reducing the stocks of used tires is a serious environmental problem. There are several methods used for recycling wasted tires, one of which is mechanical crushing, in which vulcanized rubber is separated from steel and fibers, resulting in a ground tire rubber (GTR). This can be used in applications such as insulation for footwear work. The aim of the present investigation is to evaluate the use of the GTR when it is mixed with several types of polymer matrix by means of measuring its dielectric and mechanical properties of the resulting composites (polymer + GTR). The analysis is carried out using seven polymeric matrices mixed with different GTR concentrations. With the present study, it is intended to propose a way to reuse the tires out of use as an industrial work footwear insulation, by demonstrating the feasibility of the properties analyzed.

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