Variant of time ? Temperature superposition for partially crystalline polymers (high-density polyethylene)

1975 ◽  
Vol 10 (2) ◽  
pp. 224-230 ◽  
Author(s):  
A. Yu. Gol'dman ◽  
A. M. Grinman
Keyword(s):  
High Density Polyethylene ◽  
High Density ◽  
Crystalline Polymers ◽  
Temperature Superposition ◽  
Time Temperature Superposition

scholarly journals Time-Temperature Superposition of Time-Dependent Birefringence for High Density Polyethylene

1970 ◽  
Vol 19 (199) ◽  
pp. 350-356
Author(s):  
Yoshiharu FUKUI ◽  
Masahiro USHIROKAWA ◽  
Tadahiro ASADA ◽  
Shigeharu ONOGI ◽  
Takami SATO
Keyword(s):  
High Density Polyethylene ◽  
High Density ◽  
Time Dependent ◽  
Temperature Superposition ◽  
Time Temperature Superposition

Time and temperature effects on geomembrane strain from a gravel particle subjected to sustained vertical force

2012 ◽  
Vol 49 (3) ◽  
pp. 249-263 ◽  
Author(s):  
A. Sabir ◽  
R.W.I. Brachman
Keyword(s):  
Experimental Data ◽  
Temperature Effects ◽  
High Density Polyethylene ◽  
Measured Data ◽  
Vertical Force ◽  
Temperature Superposition ◽  
Measured Strain ◽  
Time Temperature Superposition ◽  
Tensile Strains

Experimental data is reported that quantifies how time (up to 10 000 h) and temperature (from 22 to 85 °C) impact tensile strains in a 1.5 mm thick high-density polyethylene geomembrane — with a compressible clay liner beneath it — that are induced by an overlying gravel particle when subjected to a sustained vertical force. At an average applied stress of 250 kPa and clay water content of 16%, tensile strains were found to increase by 1.25 times as the temperature was increased from 22 to 55 °C after 1000 h. Similarly, strains were found to increase by factors between 1.2 to 1.3 as time was increased from 10 to 1000 h. Based on the measured data, time–temperature superposition (tTS) was then used to develop an approach to predict long-term geomembrane strains from gravel indentations. The tTS approach was validated against independent experiments conducted for 10 000 h (1.14 years) as it was found that the predicted strain of 19% was very close to the measured strain of 18%. Provided that the physical properties of the geomembrane do not decrease abruptly, the results suggest that the tTS approach developed can be used to provide estimates of long-term geomembrane strains.

Time-temperature superposition for partially crystalline polymers (polytetrafluoroethylene)

1976 ◽  
Vol 11 (3) ◽  
pp. 340-346 ◽  
Author(s):  
A. Ya. Gol'dman ◽  
A. N. Grinman ◽  
Yu. F. Dunichev
Keyword(s):  
Crystalline Polymers ◽  
Temperature Superposition ◽  
Time Temperature Superposition

Morphological study of the wear of crystalline polymers I: High density polyethylene

Wear ◽  
1982 ◽  
Vol 75 (1) ◽  
pp. 173-182 ◽  
Author(s):  
Tadashi Kōmoto ◽  
Kenji Tanaka ◽  
Seiichiro Hironaka ◽  
Takeshi Matsumoto ◽  
Nobuyuki Takano
Keyword(s):  
High Density Polyethylene ◽  
Morphological Study ◽  
High Density ◽  
Crystalline Polymers
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