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Composites of rigid polyurethane foam and shredded car window glass particles - structure and mechanical properties

Smoleń Jakub, Olszowska Karolina, Godzierz Marcin

Composites Theory and Practice

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2021

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R. 21, nr 4

135--140

EN

This publication describes the effect of shredded (milled) car windows on the structure and mechanical properties of rigid polyurethane (PUR) foam. The multi-stage shredding (crushing + milling) process for car windows provides an effective method for reusing the material as a filler. The proposed method of the mechanical recycling of windshields is energy-consuming, which increases the costs of recycling processes. At the same time, this method is scalable, which allows the processes to be transferred from the laboratory to the industrial scale. The mechanical properties of the foams reinforced with shredded glass were assessed by performing a compression test in accordance with standard PN EN 826. The obtained results demonstrate the effectiveness in increasing the compressive strength for the two-component polyurethane foam with densities of 30, 50 and 70 kg/m3. The addition of milled glass in the amounts of 10, 20, 30% by weight increases the compressive strength of the rigid foams from 10 to even 90%. The filler particles create areas where new pores form, resulting in the reinforced PUR foams having more small pores than the neat PUR foams. The sharp edges of the glass particles act as “cutting blades” for the pores that form, which is manifested by the foil effect on the filler surface.

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Wykorzystanie recyklatu poliwęglanowego do otrzymywania sztywnych pianek poliuretanowo-poliizocyjanurowych

Czupryński B., Liszkowska J., Paciorek-Sadowska J.

Ekologia i Technika

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2003

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R. 11, nr 1

8-13

EN

The possibilities of polycarbonate recyclate application as a filler for rigid polyurethane-polyisocyanurate foams (PUR-PIR) have been studied. Waste polycarbonate originating from Marine Equipment Factory FAMOR in Bydgoszcz was milled on grinding mill equipped with sieves and then it was added to foam composition in the amounts from 5% to 30% w/w with respect to the total amount of polyisocyanate and oligomerol. Seven foam samples with various content of polycarbonate recyclate were obtained by the above method. The diameter of the granulated product was 2mm. The parameters of processing were measured during the synthesis. The following physicochemical properties have been determined: apparent density, change of linear and volume dimensions, mass decrement, softening point, brittleness, compressive strength, residue after combustion. It was found that foam density, compressive strength and residue after combustion increased, whereas brittleness and softening point decreased as the content of granulated product was increased in foam composition. The changes of linear and volume dimensions as well as weight decrement of foams after 48 hours of thermostating at 393K are practically independent of the content of polycarbonate granulated product. Our studies prove that the waste polycarbonate recyclate can be applied as the filler for the rigid polyurethane-polyisocyanurate foams.

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Sztywne pianki PUR : nowe trendy w produkcji poliuretanów

Przondo J.

Izolacje

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2002

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R. 7, nr 1

s. 43-48

PL

Torzywa poliuretanowe tonażowo nie należą do czołówki masowych tworzyw sztucznych. Produkcja 8,4 mln ton roku 2000 to niewiele ponad 5% światowej produkcji tworzyw.