Development and characterization of “green open-cell polyurethane foams” with reduced flammability

0535540 - ÚMCH 2021 RIV CH eng J - Journal Article
Kurańska, M. - Beneš, Hynek - Salasińska, K. - Prociak, A. - Malewska, E. - Polaczek, K.
Development and characterization of “green open-cell polyurethane foams” with reduced flammability.
Materials. Roč. 13, č. 23 (2020), s. 1-17, č. článku 5459. E-ISSN 1996-1944
R&D Projects: GA ČR(CZ) GA19-08549S
Institutional support: RVO:61389013
Keywords : open-cell polyurethane foams * bio-polyol * spray foams
OECD category: Polymer science
Impact factor: 3.623, year: 2020
Method of publishing: Open access
https://www.mdpi.com/1996-1944/13/23/5459

This work presents the cell structure and selected properties of polyurethane (PUR) foams, based on two types of hydroxylated used cooking oil and additionally modified with three different flame retardants. Bio-polyols from municipal waste oil with different chemical structures were obtained by transesterification with triethanolamine (UCO_TEA) and diethylene glycol (UCO_DEG). Next, these bio-polyols were used to prepare open-cell polyurethane foams of very low apparent densities for thermal insulation applications. In order to obtain foams with reduced flammability, the PUR systems were modified with different amounts (10–30 parts per hundred polyol by weight—php) of flame retardants: TCPP (tris(1-chloro-2-propyl)phosphate), TEP (triethyl phosphate), and DMPP (dimethyl propylphosphonate). The flame retardants caused a decrease of the PUR formulations reactivity. The apparent densities of all the foams were comparable in the range 12–15 kg/m3. The lowest coefficients of thermal conductivity were measured for the open-cell PUR foams modified with DMPP. The lowest values of heat release rate were found for the foams based on the UCO_TEA and UCO_DEG bio-polyols that were modified with 30 php of DMPP.
Permanent Link: http://hdl.handle.net/11104/0313795