Optimal research on intake initial condition of high density-low temperature diesel combustion based on multiple index

2011 ◽  
Author(s):  
Jian-xun Liu ◽  
Pu-peng Wan ◽  
Er-li Zhao ◽  
Yu Zhang
Keyword(s):  
Low Temperature ◽  
High Density ◽  
Diesel Combustion ◽  
Initial Condition

scholarly journals Structures and impact strength variation of chemically crosslinked high-density polyethylene: effect of crosslinking density

RSC Advances ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 6791-6797
Author(s):  
Yueqing Ren ◽  
Xiaojie Sun ◽  
Lanlan Chen ◽  
Yafei Li ◽  
Miaomiao Sun ◽  
...  
Keyword(s):  
Low Temperature ◽  
Impact Strength ◽  
High Density Polyethylene ◽  
Crosslinking Density ◽  
High Density ◽  
Strength Variation

Crosslinking significantly improves the toughness and impact strength of HDPE and extends its application, especially at low temperature.

Cu to Cu direct bonding at low temperature with high density defect in electrodeposited Cu

2021 ◽  
Vol 550 ◽  
pp. 149337
Author(s):  
Haneul Han ◽  
Chaerin Lee ◽  
Youjung Kim ◽  
Jinhyun Lee ◽  
Rosa Kim ◽  
...  
Keyword(s):  
Low Temperature ◽  
High Density

scholarly journals Low-Temperature Mechanical Properties of High-Density and Low-Density Polyethylene and Their Blends

Polymers ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1821
Author(s):  
Ildar I. Salakhov ◽  
Nadim M. Shaidullin ◽  
Anatoly E. Chalykh ◽  
Mikhail A. Matsko ◽  
Alexey V. Shapagin ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Low Temperature ◽  
Impact Strength ◽  
Relative Elongation ◽  
High Density ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Elongation At Break ◽  
Subzero Temperatures ◽  
Izod Impact

Low-temperature properties of high-density polyethylene (HDPE), low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE), and their blends were studied. The analyzed low-temperature mechanical properties involve the deformation resistance and impact strength characteristics. HDPE is a bimodal ethylene/1-hexene copolymer; LDPE is a branched ethylene homopolymer containing short-chain branches of different length; LLDPE is a binary ethylene/1-butene copolymer and an ethylene/1-butene/1-hexene terpolymer. The samples of copolymers and their blends were studied by gel permeation chromatography (GPC), differential scanning calorimetry (DSC), 13С NMR spectroscopy, and dynamic mechanical analysis (DMA) using testing machines equipped with a cryochamber. It is proposed that such parameters as “relative elongation at break at −45 °C” and “Izod impact strength at −40 °C” are used instead of the ductile-to-brittle transition temperature to assess frost resistance properties because these parameters are more sensitive to deformation and impact at subzero temperatures for HDPE. LLDPE is shown to exhibit higher relative elongation at break at −45 °C and Izod impact strength at −20 ÷ 60 °C compared to those of LDPE. LLDPE terpolymer added to HDPE (at a content ≥ 25 wt.%) simultaneously increases flow properties and improves tensile properties of the blend at −45 °C. Changes in low-temperature properties as a function of molecular weight, MWD, crystallinity, and branch content were determined for HDPE, LLDPE, and their blends. The DMA data prove the resulting dependences. The reported findings allow one to understand and predict mechanical properties in the HDPE–LLDPE systems at subzero temperatures.

Niobium flex cable for low temperature high density interconnects

Cryogenics ◽  
2013 ◽  
Vol 55-56 ◽  
pp. 1-4 ◽  
Author(s):  
H.J. van Weers ◽  
G. Kunkel ◽  
M.A. Lindeman ◽  
M. Leeman
Keyword(s):  
Low Temperature ◽  
High Density ◽  
Flex Cable

Anisotropic-to-Isotropic Change in Lateral Force at the Surface of Single-Crystal Lamellae of High-Density Polyethylene during Low-Temperature Annealing

2004 ◽  
Vol 37 (13) ◽  
pp. 5115-5117 ◽  
Author(s):  
Yuji Ryousho ◽  
Sono Sasaki ◽  
Toshihiko Nagamura ◽  
Atsushi Takahara ◽  
Tisato Kajiyama
Keyword(s):  
Low Temperature ◽  
Single Crystal ◽  
High Density Polyethylene ◽  
Lateral Force ◽  
High Density ◽  
Low Temperature Annealing
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