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R. Steller, G. Kędziora, G. Mitchener, K. Fiłon, R. Kołbuc, K. Lenart, J. Śliwiński

Polyolefins filled with waste rigid polyurethane foam and compatibilized
by solid-state shear pulverization during extrusion

Polimery 2017, No 3, 181


DOI: dx.doi.org/10.14314/polimery.2017.181

Summary

Low density polyethylene (PE-LD), high density polyethylene (PE-HD), PE-LD/PE-HD blend at aratio of 1:1, and polypropylene (PP) were filled with finely-ground waste of rigid polyurethane-polyisocyanurate (PUR-PIR) foam in an amount up to 40 wt %. The components were homogenized with two-roll-mill and then, after granulation, subjected to additional homogenization using the method of solid-state shear pulverization (so-called S3P process) during extrusion. The specimens for comparative studies were obtained by injection molding. The changes in chemical structure (using FT-IR spectroscopy), mechanical properties (tensile and impact tests), rheological properties (MFR, rotational rheometry), and thermal properties (Vicat temperature) of the investigated compositions were determined. It was found that the pulverization has afavorable effect on the characteristics of the examined systems, although the improvement is not significant and clearly depends on the type of matrix polymer and foam content.
Keywords: polyolefins, rigid polyurethane foam waste, solid-state shear pulverization, rheological properties
e-mail: ryszard.steller@pwr.edu.pl
R. Steller, G. Kędziora, G. Mitchener, K. Fiłon, R. Kołbuc, K. Lenart, J. Śliwiński (674.5 KB)
Polyolefins filled with waste rigid polyurethane foam and compatibilized by solid-state shear pulverization during extrusion