Manufacturing and Compressive Mechanical Behavior of Reinforced Polyurethane Flexible (PUF) Foams

7th International Conference on Advanced Materials and Structures

Linul, E.^1 ; Linul, P.A.^2,3 ; Valean, C.^1 ; Marsavina, L.^1 ; Silaghi-Perju, D.^1

Department of Mechanics and Strength of Materials, Politehnica University of Timisoara, 1 Mihai Viteazu Avenue, Timisoara

300 222, Romania^1

Politehnica University of Timisoara, Faculty of Industrial Chemistry and Environmental Engineering, 6 Vasile Parvan Blvd., Timisoara

300 223, Romania^2

National Institute of Research for Electrochemistry and Condensed Matter, Aurel Paunescu Podeanu Street 144, Timisoara

300 569, Romania^3

关键词: Compressive mechanical behavior;    Densification strain;    Energy absorption capability;    Manufacturing methods;    Mechanical characterizations;    Polyurethane composites;    Polyurethane flexible foam;    Quasi-static compression;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/416/1/012053/pdf
DOI  :  10.1088/1757-899X/416/1/012053

来源: IOP

【 摘 要 】

This paper presents a manufacturing method and mechanical behavior of unreinforced (U-PUF) and reinforced (R-PUF) polyurethane flexible foams. In order to obtain a new type of reinforced polyurethane composite foams, an amount of 0.5% (of the foam liquid mass) aluminum microfibers were used. The mechanical characterization of both U-PUF and R-PUF foams was carried out at room temperature through quasi-static compression tests. The compression tests were performed on cubic specimens with a loading speed of 10 mm/min. The obtained and investigated foam showed a density of 150 kg/m3. It was found that the new obtained R-PUF foams crushes progressively during compression and shows higher mechanical properties (in terms of compressive modulus, yield stress, plateau stress and densification strain) compared to U-PUF foam. Particular attention was given to the foam crush performances. Experimental results indicated that aluminum microfibers significantly improve the foam energy absorption capabilities in compression.