Comparative study on selected properties of modified polyurethane foam with fly ash

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

Abstract

The aim of the article is to compare two types of fly ash (from the fluidized and pulverized coal combustion process) as a filler for rigid polyurethane foam. Pulverized fly ash (PFA) is widely used in building materials, while fluidized fly ash (FFA) is not currently recycled, but landfilled. The produced rigid polyurethane foams were reinforced with 5 and 10% by weight addition of fly ash from two different types of boilers. The foaming process, physical properties, morphologies and thermal degradation were subject to comparative analysis. The research indicated that fly ash intensifies the reactions of foam synthesis, most commonly, polyurethane (PU) foam with an addition of 10% PFA. What is interesting is that both ashes can be used in PU foam technology as they do not cause deterioration of the physical parameters. As shown, the addition of filler affects the morphology and impairs the brittleness. Additionally, the use of fly ash from coal combustion in the technology of polyurethane materials complies with the guidelines of the circular economy stated in the European Union legislation. Partial replacement of petrochemical components with waste filler also reduces the total energy consumption in the production of PU composites.

Details

Original languageEnglish
Article number9725
Number of pages14
JournalInternational Journal of Molecular Sciences
Volume23
Issue number17
Publication statusPublished - Sept 2022
Peer-reviewedYes

External IDs

Mendeley b7046237-c8c3-3cf5-9fd0-fb7431608f0a
Scopus 85137887932
WOS 000851934000001
PubMed 36077123
ORCID /0000-0003-1370-064X/work/142243779

Keywords

Keywords

  • fly ash, thermal insulation materials, polyurethane composite, rigid polyurethane foam, circular economy