Effect of Temperature and Pressure on Oxygen Pressure Aging

1942 ◽  
Vol 34 (11) ◽  
pp. 1352-1357 ◽  
Author(s):  
A. M. Neal ◽  
H. G. Bimmerman ◽  
J. R. Vincent
Keyword(s):  
Oxygen Pressure ◽  
Effect Of Temperature ◽  
Temperature And Pressure

Effect of Temperature and Pressure on Oxygen Pressure Aging

1943 ◽  
Vol 16 (2) ◽  
pp. 453-465 ◽  
Author(s):  
A. M. Neal ◽  
H. G. Bimmerman ◽  
J. R. Vincent
Keyword(s):  
Temperature Coefficient ◽  
Oxygen Pressure ◽  
The State ◽  
Effect Of Temperature ◽  
Individual Study ◽  
Aging Rate ◽  
Temperature Coefficients ◽  
Pressure Test ◽  
Temperature And Pressure

Abstract An increase in the temperature of the oxygen pressure test from 70° to 80° C greatly increases the rate of aging of rubber vulcanizates. The temperature coefficients of aging rate for the six stocks tested vary between 1.63 and 3.48. The state of cure markedly affects the temperature coefficient of some stocks. It is obvious that no change in the specification from 70° to 80° C should be made without first determining the temperature coefficient of the stock involved. A decrease in the pressure of the oxygen pressure test decreases the rate of aging, but the rate is not proportional to pressure. The relative rates of aging between 0.5 and 300 pounds oxygen pressure for the stocks tested vary between 1.09 and 4.87 for the normal cures, and between 1.50 and 6.74 for the longer cures. The state of cure markedly affects the change in rate of aging with change in pressure. The data show that changes in the pressure of the oxygen pressure test must be accompanied by a revision of all aging specifications, which will involve an individual study of each stock and every cure of each stock, since no correlation between stocks seems to exist for the changes in rate of aging that occur with changes in pressure.

Effect of temperature and pressure on mixed oxide solid solutions

2020 ◽  
Vol 117 ◽  
pp. 107965
Author(s):  
M.Yu. Petrushina ◽  
E.S. Dedova ◽  
K.V. Yusenko ◽  
A.S. Portnyagin ◽  
E.K. Papynov ◽  
...  
Keyword(s):  
Solid Solutions ◽  
Mixed Oxide ◽  
Effect Of Temperature ◽  
Temperature And Pressure

SOLUBILITY OF ETHYLENE IN WATER. EFFECT OF TEMPERATURE AND PRESSURE

1952 ◽  
Vol 44 (1) ◽  
pp. 211-212 ◽  
Author(s):  
E. J. Bradbury ◽  
Dorothy McNulty ◽  
R. I. Savage ◽  
E. E. McSweeney
Keyword(s):  
Effect Of Temperature ◽  
Water Effect ◽  
Temperature And Pressure

The Effect of Temperature and Pressure on Residual Stress in LPCVD Polysilicon Films

1992 ◽  
Vol 276 ◽  
Author(s):  
D-G. Oei ◽  
S. L. McCarthy
Keyword(s):  
Residual Stress ◽  
Deposition Temperature ◽  
Polycrystalline Silicon ◽  
Chemical Vapor ◽  
Effect Of Temperature ◽  
Pressure Chemical ◽  
Polysilicon Films ◽  
Oriented Polycrystalline ◽  
Temperature And Pressure ◽  
Reduced Pressures

ABSTRACTMeasurements of the residual stress in polysilicon films made by Low Pressure Chemical Vapor Deposition (LPCVD) at different deposition pressures and temperatures are reported. The stress behavior of phosphorus (P)-ion implanted/annealed polysilicon films is also reported. Within the temperature range of deposition, 580 °C to 650 °C, the stress vs deposition temperature plot exhibits a transition region in which the stress of the film changes from highly compressive to highly tensile and back to highly compressive as the deposition temperature increases. This behavior was observed in films that were made by the LPCVD process at reduced pressures of 210 and 320 mTORR. At deposition temperatures below 590 °C the deposit is predominantly amorphous, and the film is highly compressive; at temperatures above 610 °C (110) oriented polycrystalline silicon is formed exhibiting high compressive residual stress.

Synergetic effect of temperature and pressure on energetic and structural characteristics of {ZIF-8 + water} molecular spring

Nanoscale ◽  
2015 ◽  
Vol 7 (19) ◽  
pp. 8803-8810 ◽  
Author(s):  
Ya. Grosu ◽  
G. Renaudin ◽  
V. Eroshenko ◽  
J.-M. Nedelec ◽  
J.-P. E. Grolier
Keyword(s):  
Structural Characteristics ◽  
Synergetic Effect ◽  
Effect Of Temperature ◽  
Temperature And Pressure

scholarly journals NEAR HYDRATION OF SINGLY CHARGED MONOATOMIC IONS IN EXTREMELY DILUTED SOLUTIONS: THE EFFECT OF TEMPERATURE AND PRESSURE

2021 ◽  
pp. 24-31
Author(s):  
Viktor Ivanovych Булавин ◽  
Ivan Nikolajevych V’unik ◽  
Andrii Viktorovych Kramarenko ◽  
Alexandr Ivanovych Rusinov
Keyword(s):  
Ion Solvation ◽  
Effect Of Temperature ◽  
Temperature Growth ◽  
Translational Displacement ◽  
Na Ions ◽  
Extremely Diluted Solutions ◽  
Temperature And Pressure ◽  
Singly Charged ◽  
Direction Opposite ◽  
Structure Breaking

The diffusion coefficient  and the distance of translational displacement of Li+, Na+ K+, Cs+, Cl– and Br– ions  in water at 298.15 K – 423.15 K (25 K step) and pressure from 0.0981 to 784.5 MPa (98.1 MPa step) were calculated from the literature data on limiting molar electrical conductivity. The  values for these ions increase with pressure growth from 0.0981  to 98.1 MPa at 298.15 K. Further pressure increase (up to 785 MPa) leads to decrease in . Temperature growth under isobaric conditions leads to an increase in . Parameter (– ri) (deviation from the Stokes–Einstein law, ri is ion structural radius) was used as a criterion for the type of ion solvation. It is shown that Li+ and Na+ ions behave as cosmotropes, or positively solvated structure–forming ions having (– ri) > 0. The Cs+, Cl–, Br– ions behave as chaotropes, or negatively solvated structure–breaking ions having (– ri) < 0. For the K+ ion, the (– ri) deviation is alternating. At 0.0981 MPa and 298.15 K, the K+ ion is a chaotrope. But at 320 K (Tlim) parameter (– ri) = 0. It corresponds to the transition from negative to positive solvation. Above Tlim at P = const, the K+ ion is a cosmotrope. At 298.15 K and up to 98.1 MPa, the pressure causes the same change in the (– ri) deviation as the temperature. On the contrary, at 320 K and higher, the pressure affects the near hydration in the direction opposite to the temperature.

Experimental study on graphene-based nanocomposite membrane for hydrogen purification: Effect of temperature and pressure

2019 ◽  
Vol 330 ◽  
pp. 16-23 ◽  
Author(s):  
Rahman Zeynali ◽  
Kamran Ghasemzadeh ◽  
Alireza Behrooz Sarand ◽  
Farshad Kheiri ◽  
Angelo Basile
Keyword(s):  
Experimental Study ◽  
Nanocomposite Membrane ◽  
Effect Of Temperature ◽  
Hydrogen Purification ◽  
Temperature And Pressure
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