Time–temperature dependence of the electrical resistivity of high-density polyethylene/carbon black composites

2007 ◽  
Vol 106 (3) ◽  
pp. 2065-2074 ◽  
Author(s):  
Matteo Traina ◽  
Alessandro Pegoretti ◽  
Amabile Penati
Keyword(s):  
Electrical Resistivity ◽  
Carbon Black ◽  
Temperature Dependence ◽  
High Density Polyethylene ◽  
High Density

Surface and electrical properties of high density polyethylene + carbon black composites near the percolation threshold

e-Polymers ◽  
2010 ◽  
Vol 10 (1) ◽  
Author(s):  
Enrique Vigueras-Santiago ◽  
Susana Hernández-López ◽  
Witold Brostow ◽  
Oscar Olea-Mejia ◽  
Omar Lara-Sanjuan
Keyword(s):  
Electrical Resistivity ◽  
Electrical Properties ◽  
Carbon Black ◽  
Percolation Threshold ◽  
High Density Polyethylene ◽  
Scratch Resistance ◽  
Electric Resistivity ◽  
High Density ◽  
Dynamic Friction ◽  
Scratch Testing

AbstractWe have studied friction, scratch resistance and electrical resistivity in high density polyethylene (HDPE) + carbon black (CB) composites in relation to electric resistivity percolation threshold. Below the threshold, CB addition lowers dynamic friction by providing a smaller surface area of contact of the composites with the pin surface; the effect is stronger at higher loads. Above the percolation concentration, an increase in friction is seen due to formation of CB agglomerates and thus an increase in the area of contact. The recovery depth in scratch testing behaves similarly as dynamic friction and for the same reasons, particularly so at high loads, with a minimum at the percolation threshold. Thus, at the threshold we have simultaneously superior scratch resistance, low dynamic friction and low electric resistivity.

Investigation on the piezoresistive behavior of high-density polyethylene/carbon black films in the elastic and plastic regimes

2014 ◽  
Vol 97 ◽  
pp. 34-40 ◽  
Author(s):  
Shaodi Zheng ◽  
Jie Deng ◽  
Luqiong Yang ◽  
Danqi Ren ◽  
Shinlin Huang ◽  
...  
Keyword(s):  
Carbon Black ◽  
High Density Polyethylene ◽  
High Density ◽  
Black Films

Effect of Technical Carbon the Deformation-Strength Properties of Low Pressure Polyethylene

2020 ◽  
Vol 869 ◽  
pp. 229-233
Author(s):  
Timur A. Borukaev ◽  
Abubekir Kh. Shaov ◽  
Raisa D. Archakova ◽  
Zakhirat Kh. Sultigova
Keyword(s):  
Carbon Black ◽  
Polymer Matrix ◽  
High Density Polyethylene ◽  
Entire Range ◽  
Filler Content ◽  
Strength Properties ◽  
Optimal Combination ◽  
High Density ◽  
Strength And Ductility ◽  
Properties Of Composites

The influence of carbon black on the deformation-strength properties of high density polyethylene is considered. It was found that the deformation-strength properties of the polymer matrix change over the entire range of the filler content. The amount of carbon black that can be introduced into high-density polyethylene and obtained a composite material with the optimal combination of stiffness, strength and ductility is established. It was shown that the change in the deformation-strength properties of composites is due to the behavior and influence of carbon black particles on the structure of the polymer matrix.

Evaluation of drilling parameters on surface roughness and burr when drilling carbon black reinforced high-density polyethylene

2018 ◽  
Vol 52 (20) ◽  
pp. 2719-2727 ◽  
Author(s):  
Alper Uysal
Keyword(s):  
Surface Roughness ◽  
Carbon Black ◽  
High Density Polyethylene ◽  
Cutting Speed ◽  
Lower Surface ◽  
High Density ◽  
Effective Parameter ◽  
High Cutting Speed ◽  
Drilling Parameters ◽  
Drill Point

In this study, surface roughness and burr were investigated in drilling of pure and carbon black reinforced high-density polyethylene at three cutting speeds and feeds with three drill point angles. The measurement results of surface roughness of drilled holes were evaluated by Taguchi and analysis of variance statistical methods to specify the optimal drilling parameters and the effects of selected drilling parameters. According to the results, lower surface roughness and fewer burrs were obtained in drilling at high cutting speed and low feed with drill tools having small point angle and it was specified that the carbon black reinforcement reduced the surface roughness. Additionally, the optimal drilling parameters were determined as drill point angle of 80°, feed of 0.1 mm/rev and cutting speed of 120 m/min and the most effective parameter was found as drill point angle and the least effective parameter was found as feed.

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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