Glycolysis of flexible polyurethane foam in recycling of car seats

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Glycolysis of flexible polyurethane foam in recycling of car seats

Benes, Hynek / Roesner, Jiri / Holler, Petr / Synkova, Hana / Kotek, Jiri / Horak, Zdenek

Flexible polyurethane foam scrap was chemically decomposed via glycolysis. Optimal reaction conditions for glycolysis were determined: temperature, 220 C, polyurethane/glycol ratio, 1:1; reaction time, 2.5 hr; diethylene glycol or dipropylene glycol as reagents. Two types of polyurethane scrap were tested; both gave the recycled polyols having the same properties, which is advantageous for possible applications on a commercial scale. A mixture of the virgin and recycled polyols (up to 36 wt%) was used to manufacture rigid polyurethane foams. No undesirable influence of the recyclates on process parameters (cream time, gel time) was found. The end-use properties of the rigid foams were practically the same in the whole range of tested concentrations of recyclates. A fine cellular structure of all tested foams was found.

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Dokumentinformationen

Titel :

Glycolysis of flexible polyurethane foam in recycling of car seats

Beteiligte:

Benes, Hynek (Autor:in) / Roesner, Jiri (Autor:in) / Holler, Petr (Autor:in) / Synkova, Hana (Autor:in) / Kotek, Jiri (Autor:in) / Horak, Zdenek (Autor:in)

Erschienen in:

PMA, International conference on polymeric materials for automotive, 2005 ; 149-156

Polymers for Advanced Technologies ; 18 , 2

Erscheinungsdatum :

2007

Format / Umfang :

8 Seiten, 16 Bilder, 5 Tabellen, 16 Quellen

ISSN :

1042-7147

DOI :

https://doi.org/10.1002/pat.810

Medientyp :