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Evaluating the Mechanical Attributes of Flexible Polyurethane Foam Produced at Various Pressures

Vratika Singh, Mahesh N. Gopalasamudram, Jaya Maitra *


This study explores the impact of different pressures (1atm and 0.75atm) on the mechanical characteristics of flexible polyurethane foam, employing varied compositions (0 - 40ppw) of CaCO3. Foam production occurred under two distinct pressure conditions: vacuum pressure and atmospheric conditions. Mechanical properties, including durability, compression set, resilience, support factor, elongation, hysteresis loss, bounce characteristics (including number of bounces), hardness, thickness loss value, elongation percentage, and tear resistance strength, were quantified using specialized equipment. Results indicate that the foam generated under vacuum pressure (0.75atm) exhibited enhanced bounce characteristics and durability for compositions up to 40ppw of CaCO3, in contrast to foam produced under normal atmospheric conditions (1atm) using identical CaCO3 compositions. Across various pressures, an optimal combination of value and quality was consistently observed at 0.75atm with 40ppw CaCO3 compositions.


Flexible polyurethane foam, vacuum pressure, atmosphericconditions, calcium carbonate, environmental and sustainable foaming process

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Yanping Ye, &QingxuanZhu.The development of polyurethane. Materials science and materials reviews. (2018); 1(1): 1–8p.

Nuno V.Gama, Arthur Ferreira., & Anna Barros-Timmons. Polyurethane Foams: Past, Present and Future. Materials. (2018); 11(10): 1841p

Saunders, J. H, & Frisch, K.C. Polyurethanes, Chemistry and Technology. Part I, Chemistry Inter science Publishers New York. (1962).

Rudolph Ilaboya, & Lucky Umukoro. Effects of formulation parameters on the properties of flexible polyurethane foam. World Applied Science Journal. (2011); 14 (1): 167-174p.

Abhijit Das, Prakash Mahanwar.A Brief Discussion on Advances in Polyurethane Applications. Advanced Industrial and Engineering Polymer Research. (2020);48(20): S2542-50,30026(9).

Gülay Baysal,& Esra Kasapbasi. Polyurethanes and Usage Areas. Global Journal of Science Frontier Research: B Chemistry. (2017); 17(1): 1.0.

S. Ramesh, K. Tharanikkarasu, G. N. Mahes., &G.Radhakrishnan.Synthesis, Physico chemical Characterization, and Applications of Polyurethane Ionomer: A Review. Journal of Macro molecular Science, Part C: Polymer Reviews. (2013); 38(3): 481-509p.

Ganiyu Kayode Latinwo, David Stan Aribike, Alfred Akpoveta Susu, &Semiu Adebayo Kareem. Effects of calcium carbonate of different compositions and particle size distributions on the mechanical properties of flexible polyurethane foam. Nature and Science. (2010);8(9):92-101p.

Ganiyu Kayode Latinwo, David Stan Aribike, Alfred Akpoveta Susu, &Semiu Adebayo Kareem.Effects of Different Filler Treatments on the Morphology and Mechanical Properties of Flexible Polyurethane Foam Composites. Nature and Science. (2010); 8(6): 23-31p.

Sabrina Sá e Sant’Annaa, Denilson Arlindo de Souzaa, Danielle Marques de Araujoa, Cornélio de Freitas Carvalhob, & Maria Irene Yoshida.Physio-chemical Analysis of Flexible Polyurethane Foams Containing Commercial Calcium Carbonate. Materials Research. (2008); 11(4): 433-438p.

M. Shahzamani1, I. Rezaeian, M. S. Loghmanil, P. Zahedi, & A. Rezaeian.Effects of BaSO4, CaCO3, kaolin and quartz fillers on mechanical, chemical and morphological properties of cast polyurethane. Plastics,Rubber and Composites. (2012); 41, (6): 263p.

M.A Usman,S.O. Adeosun, &G.O. Osifes. Optimum Calcium Carbonate Filler Concentration for Flexible Polyurethane Foam Composite. Journals of minerals and materials characterization and engineering. (2012); 11(3): 311-320p.

Chiu Y. Chann, Beat B. Niederoest, & William Bundy. Environmentally friendly polyurethane foam manufacturing using Variable pressure foaming. Foamen International 1000, Columbia Ave, Linwood. (2003); PA 19061: USA.

Triolo, R. Variable Pressure Foaming, PFA Technical Meeting. (1993)

Clockaerts M., Variable Pressure Foaming, Cell. Polym. (1994); 13/2: 87p.

Blackwell, J. B, & G, Buckley Manufacturing Foam VPF Process, Cell.Polym, 14/4.

Blackwell, J. B, & G. Buckley, & S. W. Blackwell. Comparison of the VPF and Liquid Co2 Foaming Processes. Cell. Polym. (1996); 15/2: 105p.

Prefoam A. G., Product brochure on Variable Pressure Foaming Technology for Polyurethane Foams.

Shokoofeh Ghasemi, Ezatollah Nima Amini., Mehdi Tajvidi, Alper Kiziltas., Deborah F. Mielewski, & Douglas J. Gardner. Flexible polyurethane foams reinforced with organic nano-fillers and inorganic nano-fillers. Journal of Applied Polymer Science. (2020); e49983.

Nunes R.C. R, Fonseca J.L.C, and Pereir.M.R.Polymer-filler Interactions and Mechanical Properties of a Polyurethane Elastomer. Polymer Test. (2011); 19(1): 93-103p.

Javni I., Zhang W. Karajkov V., and PetrovicZ.S. (2002)., Effect of Nano-and Micro-Silica Fillers on Polyurethane Foam Properties. Journal of CellularPlastics. 38: 229-239.

Latinwo G.K. The Predictive Effects of Filler Materials on the Mechanical Properties of Flexible Polyurethane Foam. Ph.D Thesis, University of Lagos, Nigeria. 2009.

Barma P, Rhodes M.B. and Salovey R.Mechanical Properties of Particulate-filled Polyurethane Foams. J. Appl. Phys. (1978); 49(10): 4985-4991p.

Onuegbu T.U, Ugwu L.E, &Ogunfeyitimi O. Effects of fillers on the density, rising time, creaming time, ignition time, flame duration and thermal conductivity of flexible poly-ether foam. International Journal of Scientific & Engineering Research. (2013); 4(9): 1691p.

ASTM D3574 Standard test methods for flexible cellular materials—Slab, bonded, and molded urethane foams, ASTM International, West Conshohocken, PA. (2011).


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