Antistatic and microwave shielding performance of polythiophene-graphene grafted 3-dimensional carbon fibre composite

Bhardwaj, Preetam; Grace, Andrews Nirmala

doi:10.1016/j.diamond.2020.107871

Cited by 51 publications

(15 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The effect of SE M can be negligible when SE A > 10 dB. [17,18,24,25,[47][48][49][50][51][52][53][54][55] In the term of scattering parameters the coefficients of reflection (R), transmission (T), and absorption (A), are defined as…”

Section: Se Db ð þ= Se a + Se R + Se M ð4þmentioning

confidence: 99%

Electromagnetic interference shielding response of multiwall carbon nanotube/polypropylene nanocomposites prepared via melt processing technique

Kaushal

Singh

2020

Polymer Composites

View full text Add to dashboard Cite

The present study tells about dc conductivity, mechanical, and electromagnetic interference (EMI) shielding response of multiwall carbon nanotubes (MWCNT) reinforced polypropylene nanocomposites prepared via melt processing technique using a twin-screw extruder. The tensile strength of the nanocomposites shows improvement by 27% compared to the sample with no filler added (PCN0). The incorporation of MWCNT leads to a boost in electrical conductivity from 2.07 × 10 −10 to 4.21 × 10 −6 S/cm. The maximum EMI shielding effectiveness obtained at 5 wt% of MWCNT load valued −21.07 in the X-band (8.2-12.4 GHz) frequency range, measured using the vector network analyzer. The results concluded that the prepared nanocomposite is suitable to be used as a mechanically durable shielding material to fulfill the industrial needs of shielding.

show abstract

Section: Se Db ð þ= Se a + Se R + Se M ð4þmentioning

confidence: 99%

Electromagnetic interference shielding response of multiwall carbon nanotube/polypropylene nanocomposites prepared via melt processing technique

Kaushal

Singh

2020

Polymer Composites

View full text Add to dashboard Cite

show abstract

“…Однак такі полімери поки що досить високовартісні, що гальмує їх практичне використання. Відповідно, є інтерес до застосування дешевших, хоча й погано розчинних ПТ, особливо найпростішої його по-https://doi.org/10.15407/akademperiodyka.444.159 хідної, полі(3-метилтіофену) (П3МТ), для якої в допованому стані вже вдалося досягти високої електропровідності (до 2000 См/см) [7,8]. Недоліки, пов'язані з нерозчинністю чи неплавкістю цього полімеру, можуть бути мінімізовані отриманням його нанокомпозитів з термопластичними полімерами або іншими наноматеріалами, наприклад вуглецевими нанотрубками, графеном, оксидами металів тощо [9][10][11][12].…”

Section: вплив допанту на особливості формування та властивості нанокомпозитів полі(3-метилтіофену) з полівініліденфторидомunclassified

Influence of dopant on the specific features of formation and properties of nanocomposites of poly(3-methylthiophene) with polyvinylidene fluoride

Pud¹,

Ogurtsov²,

Kruglyak³

2021

New Functional Substances and Materials for Chemical Engineering

View full text Add to dashboard Cite

The work is devoted to the development and study of conducting nanocomposites of poly(3-methylthiophene) (P3MT) and poly(vinylidene fluoride) (PVDF), suitable for changing properties when interaction with of the environment components, and to find factors of influence on properties of such materials. The kinetic aspects of P3MT formation in the process of 3-methylthiophene (3MT) polymerization in PVDF dispersions in the presence of dopants of different nature, in particular, chloride (Cl-), as well as surface-active dodecylbenzenesulfonate (DBS-) and perfluorooctanoate (PFO-) anions are studied. It is found that DBS- and PFO- anions inhibit 3MT oxidation and decrease P3MT yield in comparison with those of chloride anions. It is shown that P3MT is formed through two consecutive kinetically different reactions of pseudo-first order in terms of the oxidant concentration. Transmission electron microscopy revealed that as a result of such polymerization nanoparticles of doped P3MT formed a surface inhomogeneous layer on PVDF particles, thus forming nanocomposite particles with core-shell morphology. Thermal studies showed higher thermal stability of the doped P3MT phase in the nanocomposite compared to the pure polymer. It is found that thermal stability of the P3MT phase in the PVDF/P3MT-DBS nanocomposites is higher than in the PVDF/P3MT-Cl. The influence of the dopant nature and content of doped P3MT on conductivity and sensitivity of the nanocomposites to vapors of harmful volatile organic compounds (acetone and isopropanol) is characterized. The strongest responses to acetone are shown by the nanocomposite with PFO- dopant. In the DBS- dopant case medium intensity responses are found and the lowest ones are observed for Cl- dopant. It is shown that the sensitivity of nanocomposites extremely depends on the conducting polymer content.

show abstract

“…Para aramid fibers (commonly referred to as PPTA fibers) were first produced in 1972 and have since then been widely used in diverse areas such as military applications, aerospace industry, electrical engineering, and so on. ,, Because PPTA fibers are excellent materials for electrical insulation, they can easily generate and accumulate substantial static electricity that can damage electronic equipment and textiles during their use . Static electricity can also be a fire hazard and negatively impact human health. − The electromagnetic interference from PPTA fibers can also interrupt the normal functioning of electronic devices, and cancer risk escalates when people are exposed to prolonged electromagnetic radiation. As a result, there is a considerable demand for specialized aramid fibers that are free from the problems due to static electricity and electromagnetic interference.…”

Section: Introductionmentioning

confidence: 99%

Conductive Aramid Fibers from Electroless Silver Plating of Crosslinked HPAMAM-Modified PPTA: Preparation and Properties

et al. 2022

View full text Add to dashboard Cite

Conductive aramid (PPTA) fibers are highly needed for making flexible conductive materials, antistatic materials, and electromagnetic shielding materials. In this work, silver-plated conductive PPTA fibers with high conductivity and excellent mechanical properties were prepared by the electroless plating of PPTA fibers modified with crosslinked hyperbranched polyamide-amine (HPAMAM). The crosslinked HPAMAM creates a stable interface between the PPTA fibers and the silver plating. The morphology and physicochemical properties of the modified and the silver-plated fibers were characterized by Fourier transform infrared spectroscopy, scanning electron microscopy, atomic force microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and thermogravimetric analysis. Three epoxy crosslinking agents with different chain lengths were used to crosslink HPAMAM, and the effects of HPAMAM concentration, crosslinking agent dosage, and crosslinking time on the resistance of the fibers were studied. The long chain crosslinking agent appears to be beneficial to silver plating. The lowest resistance (0.067 Ω/cm) was attained when HPAMAM was modified by diethylene glycol diglycidyl ether (1:1 molar ratio), and 20 g/L HPAMAM was used to modify the PPTA fibers. The tensile strength of the original PPTA fibers decreased by only 3% or less after silver plating.

show abstract

Antistatic and microwave shielding performance of polythiophene-graphene grafted 3-dimensional carbon fibre composite

Cited by 51 publications

References 34 publications

Electromagnetic interference shielding response of multiwall carbon nanotube/polypropylene nanocomposites prepared via melt processing technique

Electromagnetic interference shielding response of multiwall carbon nanotube/polypropylene nanocomposites prepared via melt processing technique

Influence of dopant on the specific features of formation and properties of nanocomposites of poly(3-methylthiophene) with polyvinylidene fluoride

Conductive Aramid Fibers from Electroless Silver Plating of Crosslinked HPAMAM-Modified PPTA: Preparation and Properties

Contact Info

Product

Resources

About