Is Metallocene Polyethylene Blend with HDPE More Compatible Than with PP?

1999 ◽  
pp. 17-21
Author(s):  
D. Rana ◽  
K. Cho ◽  
B.H. Lee ◽  
S. Choe
Keyword(s):  
Metallocene Polyethylene ◽  
Polyethylene Blend

scholarly journals Correlation between Structure and Dielectric Breakdown in LDPE/HDPE/Clay Nanocomposites

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
B. Zazoum ◽  
E. David ◽  
A. D. Ngô
Keyword(s):  
High Density Polyethylene ◽  
Dielectric Breakdown ◽  
Breakdown Strength ◽  
Thermomechanical Properties ◽  
Clay Nanocomposites ◽  
Screw Extruder ◽  
Short Term ◽  
Polyethylene Blend ◽  
Twin Screw ◽  
High Voltage Insulation

Cross-linked polyethylene (XLPE) is commonly used in medium/high voltage insulation due to its excellent dielectric properties and acceptable thermomechanical properties. To improve both electrical and thermal properties to a point that would possibly avoid the need for crosslinking, nanoclay fillers can be added to polymer matrix to form nanocomposites materials. In this paper, PE/clay nanocomposites were processed by mixing a commercially available premixed polyethylene/O-MMT masterbatch into a polyethylene blend matrix containing 80 wt% low density polyethylene LDPE and 20 wt% high density polyethylene HDPE with and without compatibilizer using a corotating twin-screw extruder. Various characterization techniques were employed in this paper, including optical microscopy, AFM, TEM, TGA, DMTA, and dielectric breakdown measurements in order to understand the correlation between structure and short-term dielectric breakdown strength.

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