Effect of compounding procedure on morphology and crystallization behavior of isotactic polypropylene/high-density polyethylene/carbon black ternary composites

2011 ◽  
Vol 23 (7) ◽  
pp. 1112-1120 ◽  
Author(s):  
Chao-Lu Yin ◽  
Zheng-Ying Liu ◽  
Yong-Juan Gao ◽  
Ming-Bo Yang
Keyword(s):  
Carbon Black ◽  
Isotactic Polypropylene ◽  
High Density Polyethylene ◽  
Crystallization Behavior ◽  
High Density

scholarly journals Effects of POE and Carbon Black on the PTC Performance and Flexibility of High-Density Polyethylene Composites

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Feng Xue ◽  
Kangcai Li ◽  
Lei Cai ◽  
Enyong Ding
Keyword(s):  
Carbon Black ◽  
High Density Polyethylene ◽  
Crystallization Behavior ◽  
Thermoplastic Elastomer ◽  
Positive Temperature Coefficient ◽  
High Density ◽  
Room Temperature Resistivity ◽  
Positive Temperature ◽  
Lower Temperature ◽  
Micro Morphology

High-density polyethylene (HDPE)/carbon black (CB) is widely used in positive temperature coefficient (PTC) composites. In order to expand its applications to fields that need good flexibility, polyolefin elastomer (POE) was incorporated into HDPE/CB composites as a secondary thermoplastic elastomer phase to provide flexibility. The effects of POE and CB content on the PTC performance and flexibility were investigated. Micro morphology and crystallization behavior are closely related to PTC properties. SEM was conducted to reveal phase morphology and filler dispersion, and DSC was conducted to research crystallization behavior. The results show that the incorporation of 18 wt.% POE can decrease the percolation threshold of conductive carbon black from 22.5 wt.% to 16 wt.%. When the CB content is 30 wt.%, the room temperature resistivity gradually increases with the increasing content of POE because of the barrier effect of POE phase, and the PTC intensity is gradually enhanced. Meanwhile, the PTC switching temperature shifts down to a lower temperature. The incorporation of 18 wt.% POE significantly increases the elongation at break, reaching an ultrahigh value of 980 wt.%, which means great flexibility has been achieved in HDPE/POE/CB composites. This work provides a new method of fabricating PTC composites with balanced electrical and mechanical properties.

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.

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