AI Article Synopsis
- - A bio-based flame retardant, nickel phytate (PA-Ni), was developed and used with soybean oil-based polyol to create a new type of green polyurethane foam (RPUF) that is strong, thermally stable, and flame resistant.
- - The optimized formulation (RPUF-SO2/Ni3 with 3 wt% PA-Ni) showed significant improvements in thermal stability and flame retardancy, including a 2.6% increase in limiting oxygen index and reductions in peak heat release rate by 14.92% and total heat release by 19.92%.
- - The enhanced compressive strength and smoke suppression of the foam were attributed to a combined gas-phase and condensed-phase flame
Article Abstract
A bio-based flame retardant nickel phytate (PA-Ni) was synthesized and combined with soybean oil-based polyol (SO) to create a green rigid polyurethane foam (RPUF) with enhanced compressive strength, good thermal stability and flame retardant. The results showed that the RPUF-SO2/Ni3 with 3 wt% PA-Ni had the highest initial and termination temperature, maximum thermal decomposition rate temperature and carbon residue, and better thermal stability. Its limiting oxygen index was increased by 2.6% compared with RPUF-SO2 without PA-Ni added, and the peak heat release rate (PHRR) and total heat release rate (THR) were reduced by 14.92% and 19.92%, respectively. In addition, RPUF-SO2/Ni3 had the lowest Ds under the conditions of flame (18.90) and flameless (22.41), and had the best smoke suppression effect. And the compressive strength of RPUF-SO/Ni3 was significantly enhanced by the addition of PA-Ni. The results show that the improvement of flame retardancy of RPUF is mainly the result of the combined effect of gas-phase and condensed-phase flame retardancy, among which the flame retardancy of RPUF-SO/Ni3 was the best. The current findings offer a practical way to produce green and low-carbon RPUF as well as promising prospects for the material's safe application.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11271560 | PMC |
| http://dx.doi.org/10.1038/s41598-024-67520-w | DOI Listing |
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