scholarly journals Bubble-Size Evolution during Polyurethane Foam Expansion.

2016 ◽  
Author(s):  
Lisa Ann Mondy ◽  
Christine Cardinal Roberts ◽  
Grant Soehnel ◽  
Casper Brady ◽  
Bion Shelden ◽  
...  
Keyword(s):  
Polyurethane Foam ◽  
Bubble Size ◽  
Foam Expansion ◽  
Size Evolution

Bubble-size Experiments and Predictions for Polyurethane Foam using a Population Balance Equation.

2020 ◽  
Author(s):  
Rekha Rao ◽  
Lisa Mondy ◽  
Weston Ortiz ◽  
Christine Roberts ◽  
Melissa Soehnel
Keyword(s):  
Polyurethane Foam ◽  
Bubble Size ◽  
Balance Equation ◽  
Population Balance ◽  
Population Balance Equation

scholarly journals New View to Obtain Dryer Food Foams with Different Polysaccharides and Soy Protein by High Ultrasound

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Karina D. Martínez ◽  
Cecilio Carrera Sanchez
Keyword(s):  
Soy Protein ◽  
Bubble Size ◽  
Ccd Camera ◽  
Foaming Properties ◽  
Foam Formation ◽  
Size Change ◽  
Foam Expansion ◽  
Ultrasound Application ◽  
Show Difference ◽  
Gas Volume

The objective of this work was to determine the effects of high intensity ultrasound application on the foaming properties of soy protein-polysaccharides mixed solutions. To this end, foaming parameters during foam formation were analyzed. The samples were sonicated for 20 min using ultrasonic processor Vibra Cell Sonics, and model VCX 750 at a frequency of 20 kHz and an amplitude of 20%. The foams were produced by a Foamscan instrument. The evolution of the bubble size change in the foam was also determined by a second CCD camera. For all foamed systems, at two pHs 3 and 7, Foam expansion and Relative Foam Conductivity showed a great increase after ultrasonic treatment. Other parameters studied did not show difference. On the other hand, Final Time of Foaming and the Total Gas Volume incorporation for foams formation were correlated with the Relative Foam Conductivity decrease and the Foam Expansion increase when HIUS were applied in every system. Comparative bubble size and shape during the foam formation according to the treatments and pH used confirmed the parameters results.

A study of bubble size evolution in Jameson flotation cell

2018 ◽  
Vol 137 ◽  
pp. 461-466 ◽  
Author(s):  
Hongzheng Zhu ◽  
Alejandro López Valdivieso ◽  
Jinbo Zhu ◽  
Shaoxian Song ◽  
Fanfei Min ◽  
...  
Keyword(s):  
Bubble Size ◽  
Size Evolution ◽  
Flotation Cell

scholarly journals Simulation of RIM-process for Polyurethane Foam Expansion in Fiber Reinforced Sandwich Structures

Procedia CIRP ◽  
2017 ◽  
Vol 66 ◽  
pp. 62-67 ◽  
Author(s):  
Jürgen Tröltzsch ◽  
Kay Schäfer ◽  
Dariusz Niedziela ◽  
Ikenna Ireka ◽  
Konrad Steiner ◽  
...  
Keyword(s):  
Polyurethane Foam ◽  
Sandwich Structures ◽  
Fiber Reinforced ◽  
Foam Expansion

scholarly journals Density predictions using a finite element/level set model of polyurethane foam expansion and polymerization

2018 ◽  
Vol 175 ◽  
pp. 20-35 ◽  
Author(s):  
Rekha Rao ◽  
Lisa Mondy ◽  
David Noble ◽  
Victor Brunini ◽  
Kevin Long ◽  
...  
Keyword(s):  
Finite Element ◽  
Polyurethane Foam ◽  
Level Set ◽  
Element Level ◽  
Foam Expansion ◽  
Level Set Model

Bubble‐Scale Observations of Polyurethane Foam Expansion

AIChE Journal ◽  
2022 ◽  
Author(s):  
Christine Roberts ◽  
Lisa Mondy ◽  
Grant Soehnel ◽  
Casper Brady ◽  
Bion Shelden ◽  
...  
Keyword(s):  
Polyurethane Foam ◽  
Foam Expansion

Simulation of polyurethane foam expansion with finite pointset and volume of fluid methods: implementation and experimental validation

2015 ◽  
Vol 19 (sup8) ◽  
pp. S8-149-S8-156 ◽  
Author(s):  
H. Abdessalam ◽  
B. Abbès ◽  
Y. Li ◽  
Y. Q. Guo ◽  
E. Kwassi ◽  
...  
Keyword(s):  
Polyurethane Foam ◽  
Experimental Validation ◽  
Volume Of Fluid ◽  
Foam Expansion

Investigation of irradiation-induced nucleation processes in silicon and germanium

1995 ◽  
Vol 53 ◽  
pp. 224-225
Author(s):  
Harry A. Atwater ◽  
C.M. Yang ◽  
K.V. Shcheglov
Keyword(s):  
Room Temperature ◽  
Crystal Size ◽  
Initial Distribution ◽  
Engineering Control ◽  
Size Evolution ◽  
Silicon And Germanium ◽  
Ge Quantum Dot ◽  
And Control ◽  
Germanium Quantum Dots ◽  
Kinetics Of

Studies of the initial stages of nucleation of silicon and germanium have yielded insights that point the way to achievement of engineering control over crystal size evolution at the nanometer scale. In addition to their importance in understanding fundamental issues in nucleation, these studies are relevant to efforts to (i) control the size distributions of silicon and germanium “quantum dots𠇍, which will in turn enable control of the optical properties of these materials, (ii) and control the kinetics of crystallization of amorphous silicon and germanium films on amorphous insulating substrates so as to, e.g., produce crystalline grains of essentially arbitrary size.Ge quantum dot nanocrystals with average sizes between 2 nm and 9 nm were formed by room temperature ion implantation into SiO2, followed by precipitation during thermal anneals at temperatures between 30°C and 1200°C[1]. Surprisingly, it was found that Ge nanocrystal nucleation occurs at room temperature as shown in Fig. 1, and that subsequent microstructural evolution occurred via coarsening of the initial distribution.

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