scholarly journals Development of Pneumatic Deformability Test of Polylactic Acid Films

2021 ◽  
Vol 4 (2) ◽  
pp. 87-92
Author(s):  
Dániel Gere ◽  
Kornél Pölöskei
Keyword(s):  
Elevated Temperature ◽  
Polylactic Acid ◽  
Test Method ◽  
Temperature And Pressure

Abstract The aim of the present study is to develop a test method suitable for modelling thermoforming processes and which provides an index that accurately characterises the thermoformability of a film or sheet at a given temperature and pressure. For this purpose, the elevated temperature pneumatic deformability test was considered to be the most suitable. During the test, the film is blown until it tears, which takes only a few seconds. We recorded blowing during the test, and used the images to determine the ascent (k) of the specimens and approach the estimated surface of the deformed specimens with a sphere.

scholarly journals A large fixed bed reactor for MRI operando experiments at elevated temperature and pressure

2021 ◽  
Vol 92 (4) ◽  
pp. 043711
Author(s):  
Harm Ridder ◽  
Christoph Sinn ◽  
Georg R. Pesch ◽  
Jan Ilsemann ◽  
Wolfgang Dreher ◽  
...  
Keyword(s):  
Elevated Temperature ◽  
Fixed Bed ◽  
Fixed Bed Reactor ◽  
Temperature And Pressure

Corrosion Rate Measurement by Hydrogen Effusion In Dynamic Aqueous Systems At Elevated Temperature and Pressure

CORROSION ◽  
1959 ◽  
Vol 15 (4) ◽  
pp. 29-32
Author(s):  
M. KRULFELD ◽  
M. C. BLOOM ◽  
R. E. SEEBOLD
Keyword(s):  
Elevated Temperature ◽  
Corrosion Rate ◽  
Flow Velocity ◽  
High Flow ◽  
Low Flow ◽  
Aqueous Systems ◽  
Effusion Rates ◽  
Temperature And Pressure ◽  
Effusion Method ◽  
Hydrogen Effusion

Abstract A method of applying the hydrogen effusion method to the measurement of corrosion rates in dynamic aqueous systems at elevated temperature and pressure is described. Data obtained in low carbon steel systems are presented, including (1) reproducibility obtained in measured hydrogen effusion rates at a flow velocity of 1 foot per second at a temperature of 600 F and 2000 psi, and (2) a quantitative comparison between the hydrogen effusion rates in static and in low flow velocity dynamic systems at this temperature and pressure. Some observations are included on corrosion rate measurements in a high flow velocity (30 feet per second) loop by the hydrogen effusion method. Implications of these measurements with regard to the comparison between high flow velocity corrosion and low flow velocity corrosion are mentioned and some data indicating high local sensitivity of the hydrogen effusion method are noted. Some possible difficulties involved in the method are pointed out. 2.3.4

scholarly journals Continuous-Flow Pd-Catalyzed Carbonylation of Aryl Chlorides with Carbon Monoxide at Elevated Temperature and Pressure

ChemCatChem ◽  
2019 ◽  
Vol 11 (3) ◽  
pp. 997-1001 ◽  
Author(s):  
Alejandro Mata ◽  
Christopher A. Hone ◽  
Bernhard Gutmann ◽  
Luc Moens ◽  
C. Oliver Kappe
Keyword(s):  
Carbon Monoxide ◽  
Elevated Temperature ◽  
Continuous Flow ◽  
Aryl Chlorides ◽  
Temperature And Pressure

scholarly journals HINDERED DIFFUSION OF ASPHALTENES AT ELEVATED TEMPERATURE AND PRESSURE

2001 ◽  
Author(s):  
James A. Guin ◽  
Ganesh Ramakrishnan ◽  
Keiji Asada ◽  
Brian Mosley
Keyword(s):  
Elevated Temperature ◽  
Hindered Diffusion ◽  
Temperature And Pressure
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