Influence of Noncovalent Modification on Dispersion State
Multiwalled carbon nanotubes (MWNTs) were melt-mixed with polyamide6 (PA6) and acrylonitrile butadiene styrene copolymer (ABS) to obtain electrically conducting composites. MWNTs were noncovalently modified with sodium salt of 6-aminocaproic acid (MWNTs-m1) and 3-pyrenealdehyde (MWNTs-m2) to deagglomerate MWNTs. Raman spectroscopic analysis indicated a G-band shift
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Triple percolation behavior and positive temperature
Feng JY Chan CM (2000) Double positive temperature coefficient effects of carbon black-filled polymer blends containing two semicrystalline polymers.
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Double percolation of multiwalled carbon nanotubes in
Sep 02 2016 · Double percolation leads to a low electrical percolation threshold.
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Selection of Immiscible Polymer Blends Filled with Carbon
Selection of Immiscible Polymer Blends Filled with Carbon Nanotubes for Heating Applications and Joule effect) cases and 0.16 wt. for polystyrene filled with carbon nanotubes. Miles et al
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USA1Use of carbon nanotubes for the
The invention relates to the use of carbon nanotubes for the production of an electrically-conductive organic composition having an electrical resistivity that is constant as a function of temperature and to the applications of said compositions. The conductive organic composition has a temperature-insensitive electrical resistivity and a temperature-insensitive thermal conductivity.
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Influence of Multiwall Carbon Nanotubes Trapped at the
Tao Fangfang Auhl Dietmar Baudouin Anne-Christine Stadler Florian J. Bailly Christian . The infl uence on interfacial energy of multiwall unfunctionalized carbon nanotubes (CNTs) trapped at the interface of an immiscible blend of polyamide 12 (PA12) and acrylate-ethylene (EA) copolymer is investigated with the help of the Palierne model combined with transmission electron microscopy
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Localization behavior of multiwalled carbon nanotubes in
blend phases in immiscible or compatible polymer blends having co-continuous morphology. This concept is known as double percolation and was initially described by Sum-ita et al. (1991 1992) for carbon black filled immiscible polymer blends and it has been applied for CNT filled polymer composites (Maiti et al. 2013 Poyekar et al. 2015).
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Localization behavior of multiwalled carbon nanotubes in
blend phases in immiscible or compatible polymer blends having co-continuous morphology. This concept is known as double percolation and was initially described by Sum-ita et al. (1991 1992) for carbon black filled immiscible polymer blends and it has been applied for CNT filled polymer composites (Maiti et al. 2013 Poyekar et al. 2015).
Get PriceInfluence of annealing on conduction of high‐density
The high‐density polyethylene/carbon black (HDPE/CB) composite with a CB volume fraction of 0.113 is isothermally annealed at various temperatures from 116 to 149°C covering the positive temperature coefficient (PTC) transition and the negative temperature coefficient regions during heating as well as from 149 to 122°C above the reverse‐PTC transition during cooling.
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Triple percolation behavior and positive temperature
Double PTC effect of carbon nanotubes filled immiscible polymer blends. Article. May 2014 C. Lu D. Yang R. Wang Y. Zhang A double-positive temperature coefficient (PTC) effect was
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Triple percolation behavior and positive temperature
Feng JY Chan CM (2000) Double positive temperature coefficient effects of carbon black-filled polymer blends containing two semicrystalline polymers.
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Influence of morphology on PTC effect for poly (ethylene
Nov 14 2013 · Multiwall carbon nanotubes (MWCNTs) filled poly (ethylene-co-butyl acrylate)/nylon6 (EBA/PA6) blends were prepared by melt-mixing method. MWCNTs were localized in PA6 phase and the percolation threshold was 6 wt . A weak PTC (positive temperature coefficient) effect was observed. The method that EBA-g-MAH was first reacted with MWCNTs and then blended with EBA/PA6 was
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Carbon black–filled immiscible blends of poly(vinylidene
An increase in CB content in the composites with a fixed PVDF/HDPE volume ratio (1/1) and an increase in PVDF content in composites with a fixed CB content (10 wt ) greatly decreased the domain size of the PVDF phase. A positive‐temperature‐coefficient effect was used to
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Influence of morphology on PTC effect for poly (ethylene
Nov 14 2013 · Multiwall carbon nanotubes (MWCNTs) filled poly (ethylene-co-butyl acrylate)/nylon6 (EBA/PA6) blends were prepared by melt-mixing method. MWCNTs were localized in PA6 phase and the percolation threshold was 6 wt . A weak PTC (positive temperature coefficient) effect was observed.
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Double PTC Effect of Carbon Nanotubes Filled Immiscible
Double PTC Effect of Carbon Nanotubes Filled Immiscible Polymer Blends Double PTC Effect of Carbon Nanotubes Filled Immiscible Polymer Blends Author / Creator Lu Study of Influential Factors in Double-shell Phase Change Micro-nano Capsules Preparation. Shang Jianli / Zhang
Get PriceHigh positive temperature coefficient effect of
Jun 01 2020 · 1. Introduction. Electrically conductive polymer composites (CPCs) which were generally composed of polymer matrix and conductive fillers such as carbon nanotubes (CNTs) carbon black (CB) 5 6 graphite 7 8 graphene 9 10 and metal particles have attracted the wide interest in both science research and practical application due to the electrical thermal and mechanical
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Influence of Multiwall Carbon Nanotubes Trapped at the
Tao Fangfang Auhl Dietmar Baudouin Anne-Christine Stadler Florian J. Bailly Christian . The infl uence on interfacial energy of multiwall unfunctionalized carbon nanotubes (CNTs) trapped at the interface of an immiscible blend of polyamide 12 (PA12) and acrylate-ethylene (EA) copolymer is investigated with the help of the Palierne model combined with transmission electron microscopy
Get PriceSelection of Immiscible Polymer Blends Filled with Carbon
Selection of Immiscible Polymer Blends Filled with Carbon Nanotubes for Heating Applications and Joule effect) cases and 0.16 wt. for polystyrene filled with carbon nanotubes. Miles et al
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Conductivity Modification of Carbon-Based Nanocomposites
The combination of carbon materials and polymer has been well studied according to their compatable mixture in polymer with promising properties. Due to their excellent electrical and thermal properties for some types of carbons such as carbon nanotubes and graphite they have been selected as component for nanocomposites. Here capability of multi-walled carbon nanotubes (MWNTs) and graphite
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Nanomaterials Free Full-Text Effect of Hybrid Carbon
The effect of hybrid carbon fillers of multi-walled carbon nanotubes (CNT) and carbon black (CB) on the electrical and morphological properties of polystyrene (PS) nanocomposites were systematically investigated in microinjection molding (μIM). The polymer nanocomposites with three different filler concentrations (i.e. 3 5 and 10 wt ) at various weight ratios of CNT/CB (100/0 30/70 50/50
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Double positive temperature coefficient effects of carbon
Double positive temperature coefficient effects of carbon black-filled polymer blends containing two semicrystalline polymers June 2000 Polymer 41(12)
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Selection of Immiscible Polymer Blends Filled with Carbon
Selection of Immiscible Polymer Blends Filled with Carbon Nanotubes for Heating Applications and Joule effect) cases and 0.16 wt. for polystyrene filled with carbon nanotubes. Miles et al
Get PriceCNAPreparation method of electrically conductive
The invention discloses a making method of conductive composite material with positive-temperature coefficient effect which comprises the following steps (1) putting two blending polymers and conductive filler in the double-screw squeezing machine or sealed fusing machine to fuse 5-20 min with fusing temperature higher than fusing point of polymer by 10-50 deg.c (2) moulding the blending
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FRA1Use of carbon nanotubes for the manufacture
The present invention relates to the use of carbon nanotubes for the manufacture of an electrically conductive organic composition having a constant electrical resistivity as a function of temperature as well as the applications of these compositions.This conductive organic composition has an insensitive electrical resistivity. at temperature and temperature insensitive conductivity.
Get Price(PDF) Positive temperature coefficient thermistors based
Lu C. et al. Influence of morphology on PTC effect for poly (ethylene-co-butyl vertically aligned carbon nanotube-based sandwich composites. ACS Nano 4 acrylate)/nylon6 blends with multiwall carbon nanotubes dispersed at interface (2010). and in matrix. Polym. Bull. 71 (2014). 16.
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Triple percolation behavior and positive temperature
Feng JY Chan CM (2000) Double positive temperature coefficient effects of carbon black-filled polymer blends containing two semicrystalline polymers.
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Properties of microinjection-molded multi-walled carbon
Sumita M Sakata K Hayakawa Y Asai S Miyasaka K Tanemura M (1992) Double percolation effect on the electrical conductivity of conductive particles filled polymer blends. Colloid Polym Sci 270 134–139
Get Price(PDF) Positive temperature coefficient thermistors based
Lu C. et al. Influence of morphology on PTC effect for poly (ethylene-co-butyl vertically aligned carbon nanotube-based sandwich composites. ACS Nano 4 acrylate)/nylon6 blends with multiwall carbon nanotubes dispersed at interface (2010). and in matrix. Polym. Bull. 71 (2014). 16.
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Two-step positive temperature coefficient effect with
Mar 01 2017 · Zha et al. explored the PTC effect of immiscible polymerblends ultra-high molecular weight polyethylene (UHMWPE)/polyvinylidene fluoride (PVDF) = 4 1 based composites containing hybrid fillers carbon nanotubes (CNTs) and carbon black (CB) and they found both of the PTC intensity (I PTC = log(ρ max /ρ RT) where ρ max is the maximum
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