Facile preparation of Poly(butylene succinate)/Carbon nanotubes/polytetrafluoroethylene ternary nanocomposite foams with superior electrical conductivity by synergistic effect of “ball milling” and supercritical fluid-Assisted processing

2021 ◽  
Vol 201 ◽  
pp. 108519
Author(s):  
An Huang ◽  
Jialin Lin ◽  
Shudong Chen ◽  
Hui Fang ◽  
Hankun Wang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Electrical Conductivity ◽  
Synergistic Effect ◽  
Ball Milling ◽  
Supercritical Fluid ◽  
Butylene Succinate ◽  
Ternary Nanocomposite ◽  
Nanocomposite Foams ◽  
Facile Preparation

Synergistic effect of carbon nanotubes and carbon black on electrical conductivity of PA6/ABS blend

2013 ◽  
Vol 81 ◽  
pp. 1-8 ◽  
Author(s):  
Jie Chen ◽  
Xue-Chong Du ◽  
Wen-Bin Zhang ◽  
Jing-Hui Yang ◽  
Nan Zhang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Electrical Conductivity ◽  
Carbon Black ◽  
Synergistic Effect

scholarly journals Fabrication of Poly(butylene succinate)/Carbon Black Nanocomposite Foams with Good Electrical Conductivity and High Strength by a Supercritical CO2 Foaming Process

Polymers ◽  
2019 ◽  
Vol 11 (11) ◽  
pp. 1852 ◽  
Author(s):  
Zhou Chen ◽  
Junfeng Hu ◽  
Jiajun Ju ◽  
Tairong Kuang
Keyword(s):  
Electrical Conductivity ◽  
Carbon Black ◽  
Supercritical Co2 ◽  
Functional Materials ◽  
High Strength ◽  
Complex Viscosity ◽  
Dynamic Mechanical Properties ◽  
Butylene Succinate ◽  
Foaming Process ◽  
Nanocomposite Foams

Lightweight, high-strength and electrically conductive poly(butylene succinate) (PBS)/ carbon black (CB) nanocomposite foams with a density of 0.107–0.344 g/cm3 were successfully fabricated by a solid-state supercritical CO2 (ScCO2) foaming process. The morphology, thermal and dynamic mechanical properties, and rheological behavior of the PBS/CB nanocomposites were studied. The results indicate that the CB nanofiller was well dispersed in the PBS matrix and the presence of a proper CB nanofiller can accelerate the rate of crystallization, improve the thermal stability, enhance the stiffness, and increase the complex viscosity of PBS/CB nanocomposites. These improved properties were found to play an important role in the foaming process. The results from foaming experiments showed that the PBS/CB nanocomposite foams had a much smaller cell size, a higher cell density, and a more uniform cell morphology as compared to neat PBS foams. Furthermore, the PBS/CB nanocomposite foams also possessed low density (0.107–0.344 g/cm3), good electrical conductivity (~0.45 S/cm at 1.87 vol % CB loading), and improved compressive strength (108% increase), which enables them to be used as lightweight and high-strength functional materials.

Polylactide composite foams containing carbon nanotubes and carbon black: Synergistic effect of filler on electrical conductivity

Carbon ◽  
2015 ◽  
Vol 95 ◽  
pp. 380-387 ◽  
Author(s):  
Defeng Wu ◽  
Qiaolian Lv ◽  
Saihua Feng ◽  
Jianxiang Chen ◽  
Yang Chen ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Electrical Conductivity ◽  
Carbon Black ◽  
Synergistic Effect ◽  
Composite Foams

scholarly journals Hydrothermal Carbon/Carbon Nanotube Composites as Electrocatalysts for the Oxygen Reduction Reaction

2020 ◽  
Vol 4 (1) ◽  
pp. 20 ◽  
Author(s):  
Rafael G. Morais ◽  
Natalia Rey-Raap ◽  
Rui S. Costa ◽  
Clara Pereira ◽  
Alexandra Guedes ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Electrical Conductivity ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Ball Milling ◽  
Active Sites ◽  
Chemical Reactivity ◽  
Carbon Composite ◽  
Reduction Reaction ◽  
Limiting Current

The oxygen reduction reaction is an essential reaction in several energy conversion devices such as fuel cells and batteries. So far, the best performance is obtained by using platinum-based electrocatalysts, which make the devices really expensive, and thus, new and more affordable materials should be designed. Biomass-derived carbons were prepared by hydrothermal carbonization in the presence of carbon nanotubes with different oxygen surface functionalities to evaluate their effect on the final properties. Additionally, nitrogen functional groups were also introduced by ball milling the carbon composite together with melamine. The oxygen groups on the surface of the carbon nanotubes favor their dispersion into the precursor mixture and the formation of a more homogenous carbon structure with higher mechanical strength. This type of structure partially avoids the crushing of the nanotubes and the carbon spheres during the ball milling, resulting in a carbon composite with enhanced electrical conductivity. Undoped and N-doped composites were used as electrocatalysts for the oxygen reduction reaction. The onset potential increases by 20% due to the incorporation of carbon nanotubes (CNTs) and nitrogen, which increases the number of active sites and improves the chemical reactivity, while the limiting current density increases by 47% due to the higher electrical conductivity.

scholarly journals Synergistic Effect of Screen-Printed Single-Walled Carbon Nanotubes and Phosphorylated Cellulose Nanofibrils on Thermophysiological Comfort, Thermal/UV Resistance, Mechanical and Electroconductive Properties of Flame-Retardant Fabric

Materials ◽  
2021 ◽  
Vol 14 (23) ◽  
pp. 7238
Author(s):  
Tjaša Kolar ◽  
Vanja Kokol
Keyword(s):  
Carbon Nanotubes ◽  
Electrical Conductivity ◽  
Synergistic Effect ◽  
Thermal Resistance ◽  
Flame Retardant ◽  
Water Vapour ◽  
Abrasion Resistance ◽  
Single Walled Carbon Nanotubes ◽  
Front Side ◽  
Walled Carbon Nanotubes

Single-walled carbon nanotubes (SWCNTs) and phosphorylated nanocellulose fibrils (PCNFs) were used as functional screen-print coatings on flame-retardant (FR) fabric, to improve its thermal resistance and thermophysiological comfort (wetting, water vapour and heat transmission) properties, while inducing it with electrical conductivity and UV protection. The effect of PCNF printing, followed by applying a hydrophobic polyacrylate (AP), on the same (back/B, turned outwards) or other (front/F, turned towards skin) side of the fabric, with and without the addition of 0.1–0.4 wt% SWCNTs, was studied by determining the amount of applied coating and its distribution (microscopic imaging), and measuring the fabric’s colour, air permeability, thickness, mechanical, flame and abrasion resistance properties. Due to the synergistic effect of PCNF and SWCNTs, both-sided printed fabric (front-side printed with PCNF and back-side with SWCNTs within AP) resulted in an increased heat transfer (25%) and an improved thermal resistance (shift of degradation temperature by up to 18 °C towards a higher value) and UV protection (UPF of 109) without changing the colour of the fabric. Such treatment also affected the moisture management properties with an increased water-vapour transfer (17%), reduced water uptake (39%) and asymmetric wettability due to the hydrophilic front (Contact Angle 46°) and hydrophobic back (129°) side. The increased tensile (16%) and tear (39%) strengths were also assessed in the warp direction, without worsening the abrasion resistance of the front-side. A pressure-sensing electrical conductivity (up to 4.9∙10−4 S/cm with an increase to 12.0∙10−4 S/cm at 2 bars) of the SWCNT-printed side ranks the fabric among the antistatic, electrostatic discharge (ESD) or electromagnetic interference (EMI) shielding protectives.

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