Acronitrile butadiene styrene/polycaprolactam/nano carbon black composites: Selective percolation, glass transition and temperature dependence of electrical conductivity

2014 ◽  
Vol 37 (2) ◽  
pp. 481-487 ◽  
Author(s):  
R.K. Mondal ◽  
K.A. Dubey ◽  
Y.K. Bhardwaj ◽  
L. Panicker ◽  
L. Varshney
Keyword(s):  
Electrical Conductivity ◽  
Glass Transition ◽  
Carbon Black ◽  
Temperature Dependence ◽  
Nano Carbon ◽  
Butadiene Styrene

Electrical Conductivity and Electromagnetic Shielding Effectiveness of CB/ABS Composites

2011 ◽  
Vol 675-677 ◽  
pp. 461-463
Author(s):  
Hai Ping Duan ◽  
Yu Ping Duan
Keyword(s):  
Electrical Conductivity ◽  
Carbon Black ◽  
Mass Fraction ◽  
Acrylonitrile Butadiene Styrene ◽  
Volume Resistivity ◽  
Electromagnetic Shielding ◽  
Shielding Effectiveness ◽  
Percolation Effect ◽  
Electromagnetic Shielding Effectiveness ◽  
Butadiene Styrene

In this paper, the effects of carbon black (CB) mass fraction on volume resistivity and electromagnetic shielding effectiveness (SE) of CB/Acrylonitrile Butadiene Styrene (ABS) composites were studied. The results indicated that when CB mass fraction was over 15 wt%, the volume resistivity dropped sharply and when it rose to 35 wt%, the volume resistivity achieved the lowest value about 103Ω·cm. In addition, there are two obvious percolation effect at 15~20 wt% and 25~35 wt% CB respectively in the course of the volume resistivity changing. Titanate coupling agent could greatly improve conduction and SE of CB/ABS composites. Lastly, the SE of CB/ABS composites was investigated by experimental observation.

Preparation of Nano Carbon Black/Epoxy Composite by Frontal Polymerization

2014 ◽  
Vol 692 ◽  
pp. 416-419 ◽  
Author(s):  
Zhuo Chen ◽  
Peng Liu ◽  
Lei Shi ◽  
Zhi Xiong Huang ◽  
Bing Yan Jiang
Keyword(s):  
Electrical Conductivity ◽  
Carbon Black ◽  
Epoxy Composite ◽  
Test Tube ◽  
Frontal Polymerization ◽  
Epoxy System ◽  
Pure Epoxy ◽  
Hot Air ◽  
Air Gun ◽  
Nano Carbon

Frontal polymerization is an fast, energy saving approach to prepare polymers and its composites. nanoCarbon /epoxy composite were prepared by frontal polymerization in this study. The composite was prepared using test-tube, and the reacting front was triggered by hot air gun. It was found that increasing the amount of hardener from 10wt% to 20wt%, the reacting frontal propagating velocity of pure epoxy system increased from 0.11mm/s to 0.34mm/s. With the increasing amount of nanocarbon black, the electrical conductivity of the composite was improved. Along the direction of the frontal polymerization, the conductivity of the composite did not change obviously which indicating the forming of uniform nanocarbon black/epoxy composite by frontal polymerization.

scholarly journals Heterogeneous Distribution of Carbon Black in Polymer Blends: Effect on Crystallization and Temperature Dependence of Electrical Conductivity.

1991 ◽  
Vol 48 (10) ◽  
pp. 635-640 ◽  
Author(s):  
Shigeo ASAI ◽  
Yu HAYAKAWA ◽  
Ken-ichi SUZUKI ◽  
Masao SUMITA ◽  
Keizo MIYASAKA ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Carbon Black ◽  
Polymer Blends ◽  
Temperature Dependence ◽  
Heterogeneous Distribution

Electrical conductivity and rheological properties of carbon black based conductive polymer composites prior to and after annealing

2021 ◽  
pp. 096739112110012
Author(s):  
Qingsen Gao ◽  
Jingguang Liu ◽  
Xianhu Liu
Keyword(s):  
Electrical Conductivity ◽  
Carbon Black ◽  
Percolation Threshold ◽  
Rheological Properties ◽  
Network Formation ◽  
Loss Modulus ◽  
Conductive Polymer ◽  
Complex Viscosity ◽  
Electrical Percolation ◽  
Electrical Percolation Threshold

The effect of annealing on the electrical and rheological properties of polymer (poly (methyl methacrylate) (PMMA) and polystyrene (PS)) composites filled with carbon black (CB) was investigated. For a composite with CB content near the electrical percolation threshold, the formation of conductive pathways during annealing has a significant impact on electrical conductivity, complex viscosity, storage modulus and loss modulus. For the annealed samples, a reduction in the electrical and rheological percolation threshold was observed. Moreover, a simple model is proposed to explain these behaviors. This finding emphasizes the differences in network formation with respect to electrical or rheological properties as both properties belong to different physical origins.

Sign in / Sign up

Export Citation Format

Share Document