Positive Temperature Coefficient and Electrical Conductivity Investigation of Hybrid Nanocomposites Based on High Density Polyethylene/Graphene Nanoplatelets/ Carbon Black

2021 ◽  
Author(s):  
Mohammad Shafiei ◽  
Ismaeil Ghasemi ◽  
Sepideh Gomari ◽  
Ali Abedini ◽  
Roghayeh Jamjah
Keyword(s):  
Electrical Conductivity ◽  
Carbon Black ◽  
Temperature Coefficient ◽  
High Density Polyethylene ◽  
Positive Temperature Coefficient ◽  
Graphene Nanoplatelets ◽  
High Density ◽  
Hybrid Nanocomposites ◽  
Positive Temperature

Positive Temperature Coefficient Behavior of the Graphite Nanofibre and Carbon Black Filled High-Density Polyethylene Hybrid Composites

2008 ◽  
Vol 47-50 ◽  
pp. 226-229 ◽  
Author(s):  
Qi Li ◽  
Jong Wan Kim ◽  
Tae Hee Shim ◽  
Yun Ki Jang ◽  
Joong Hee Lee
Keyword(s):  
Carbon Black ◽  
Temperature Coefficient ◽  
High Density Polyethylene ◽  
Hybrid Composites ◽  
Positive Temperature Coefficient ◽  
High Density ◽  
Hybrid Nanocomposites ◽  
Room Temperature Resistivity ◽  
Positive Temperature ◽  
Temperature Resistivity

The graphite nanofiber (GNF) and carbon black filled high-density polyethylene (HDPE) hybrid nanocomposites were prepared by solution mixing and melt blending techniques. The effect of addition of GNF on the positive temperature coefficient (PTC) behavior of the nanocomposites was investigated. The incorporation of small amount of GNF into HDPE/CB composites showed a significant improvement in PTC intensity and repeatability of the hybrid nanocomposites. The maximum PTC intensity was observed for the HDPE/CB/GNF (80/20/0.25) nanocomposite with a relatively low room temperature resistivity.

Distinct positive temperature coefficient effect of polymer–carbon fiber composites evaluated in terms of polymer absorption on fiber surface

2016 ◽  
Vol 18 (11) ◽  
pp. 8081-8087 ◽  
Author(s):  
Xi Zhang ◽  
Shaodi Zheng ◽  
Xiaofang Zheng ◽  
Zhengying Liu ◽  
Wei Yang ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
Temperature Coefficient ◽  
High Density Polyethylene ◽  
Fiber Surface ◽  
Fiber Composites ◽  
Positive Temperature Coefficient ◽  
High Density ◽  
Carbon Fiber Composites ◽  
Positive Temperature ◽  
Ptc Effect

The positive temperature coefficient (PTC) effect for high-density polyethylene (HDPE)/carbon fiber (CF) composites was studied.

Electrical, Thermal and Positron Lifetime Spectroscopy Studies on Multi-Walled Carbon Nanotube Reinforced High Density Polyethylene/Carbon Black Nanocomposites

2010 ◽  
Vol 123-125 ◽  
pp. 59-62 ◽  
Author(s):  
T. Jeevananda ◽  
O.G. Palanna ◽  
Joong Hee Lee ◽  
Siddaramaiah ◽  
C. Ranganathaiah
Keyword(s):  
Thermal Properties ◽  
Carbon Nanotube ◽  
Carbon Black ◽  
Free Volume ◽  
High Density Polyethylene ◽  
High Density ◽  
Hybrid Nanocomposites ◽  
Positive Temperature ◽  
Multi Walled Carbon Nanotube ◽  
Positron Lifetime Spectroscopy

The present study investigates the effect of the carboxylated multi-walled carbon nanotube (0~3 wt %) content on the electrical and thermal properties of high density polyethylene/carbon black/carboxylated multi-walled carbon nanotube (HDPE/CB/c-MWNT) hybrid nanocomposites. The room temperature electrical resistivity and positive temperature coefficient (PTC) intensity of the nanocomposites significantly improved with the addition of c-MWNT. However, the heat of fusion decreases as the amount of c-MWNT increases. Further, the microstructural parameters such as the fractional free volume (Fv) and free volume hole size (Vf) of the nanocomposites shows appreciable changes around the percolation threshold. Secondly, the PALS results seem to correlate well with the electrical and thermal properties of the composites.

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