scholarly journals Effect of Crystalline Morphology on Electrical Tree Growth Characteristics of High-Density and Low-Density Polyethylene Blend Insulation

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 114413-114421
Author(s):  
Zhonglei Li ◽  
Shuofan Zhou ◽  
Boxue Du ◽  
Mingsheng Fan ◽  
Jingang Su
Keyword(s):  
Tree Growth ◽  
Growth Characteristics ◽  
High Density ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Crystalline Morphology ◽  
Polyethylene Blend ◽  
Electrical Tree

Use of Near-Infrared Spectroscopy to Determine the Composition of High-Density/Low-Density Polyethylene Blend Films

1993 ◽  
Vol 47 (2) ◽  
pp. 222-228 ◽  
Author(s):  
Charles E. Miller
Keyword(s):  
Near Infrared ◽  
Principal Component Regression ◽  
Nir Spectroscopy ◽  
Principal Component ◽  
High Density ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Blend Films ◽  
Polyethylene Blend

The ability of near-infrared (NIR) spectroscopy, combined with principal component regression (PCR), to nondestructively determine the blend ratio of high-density polyethylene (HDPE) and low-density polyethylene (LDPE) in extruded films is demonstrated. Results indicate that the NIR spectrum in the region 2100 to 2500 nm can be used to determine the HDPE mass percentage of 60–80- μm-thick film samples to within 2.5%, over a range of 0 to 100%. NIR spectral effects from scattering are important for the determination of the HDPE % for HDPE contents above 50%, and spectral effects from changes in the methyl group concentration and perhaps the PE crystallinity are important for the determination of the HDPE % for HDPE contents below 50%. In addition, a large variation between the spectra of replicate samples, probably caused by variations in the degree or direction of molecular orientation in the samples, was observed.

Time-resolved small-angle x-ray scattering of a high-density polyethylene/low-density polyethylene blend

1990 ◽  
Vol 23 (8) ◽  
pp. 2380-2384 ◽  
Author(s):  
H. H. Song ◽  
D. Q. Wu ◽  
Benjamin Chu ◽  
M. Satkowski ◽  
M. Ree ◽  
...  
Keyword(s):  
Small Angle ◽  
High Density Polyethylene ◽  
High Density ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Time Resolved ◽  
X Ray ◽  
X Ray Scattering ◽  
Polyethylene Blend ◽  
Ray Scattering
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