Synthesis, mechanical properties and fire behaviors of rigid polyurethane foam with a reactive flame retardant containing phosphazene and phosphate

Rigid polyurethane foams (RPUFs) are widely used in many fields, but they are easy to burn and produce a lot of smoke, which seriously endangers the safety of people’s lives and property. In this study, tetraethyl(1,5–bis(bis(2–hydroxypropyl)amino)pentane–1,5–diyl)bis(phosphonate) (TBPBP), as a phosphorus–nitrogen–containing reactive–type flame retardant, was successfully synthesized and employed to enhance the flame retardancy of RPUFs, and silica aerogel (SA) powder was utilized to reduce harmful fumes. Castor oil–based rigid polyurethane foam containing SA powder and TBPBP was named RPUF–T45@SA20. Compared with neat RPUF, the obtained RPUF–T45@SA20 greatly improved with the compressive strength properties and the LOI value increased by 93.64% and 44.27%, respectively, and reached the V–0 rank of UL–94 testing. The total heat release (THR) and total smoke production (TSP) of RPUF–T45@SA20 were, respectively, reduced by 44.66% and 51.89% compared to those of the neat RPUF. A possible flame–retardant mechanism of RPUF–T45@SA20 was also proposed. This study suggested that RPUF incorporated with TBPBP and SA powder is a prosperous potential composite for fire and smoke safety as a building insulation material.

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Mechanical Properties and Flame Retardancy of Rigid Polyurethane Foam Using New Phosphorus Flame Retardant

Applied Chemistry for Engineering ◽

10.14478/ace.2016.1079 ◽

2016 ◽

Vol 27 (6) ◽

pp. 577-582

Author(s):

Byoung Jun Lee ◽

Sang Bum Kim

Keyword(s):

Mechanical Properties ◽

Flame Retardant ◽

Polyurethane Foam ◽

Flame Retardancy ◽

Rigid Polyurethane Foam

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Flame-retardant and mechanical properties of rigid polyurethane foam/MRP/mg(OH)2 /GF/HGB composites

Journal of Applied Polymer Science ◽

10.1002/app.46551 ◽

2018 ◽

Vol 135 (31) ◽

pp. 46551 ◽

Cited By ~ 6

Author(s):

A. Li ◽

D. D. Yang ◽

H. N. Li ◽

C. L. Jiang ◽

J. Z. Liang

Keyword(s):

Mechanical Properties ◽

Flame Retardant ◽

Polyurethane Foam ◽

Rigid Polyurethane Foam

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Synergistic effects of expandable graphite and ammonium pentaborate octahydrate on the flame‐retardant, thermal insulation, and mechanical properties of rigid polyurethane foam

Polymer Composites ◽

10.1002/pc.25494 ◽

2020 ◽

Vol 41 (5) ◽

pp. 1749-1762 ◽

Cited By ~ 1

Author(s):

Emre Akdogan ◽

Murat Erdem ◽

Mustafa Erdem Ureyen ◽

Metin Kaya

Keyword(s):

Mechanical Properties ◽

Flame Retardant ◽

Polyurethane Foam ◽

Thermal Insulation ◽

Synergistic Effects ◽

Expandable Graphite ◽

Rigid Polyurethane Foam

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Environmentally Friendly Flame-Retardant and Its Application in Rigid Polyurethane Foam

International Journal of Polymer Science ◽

10.1155/2014/263716 ◽

2014 ◽

Vol 2014 ◽

pp. 1-7 ◽

Cited By ~ 8

Author(s):

Yongjun Chen ◽

Zhixin Jia ◽

Yuanfang Luo ◽

Demin Jia ◽

Bin Li

Keyword(s):

Mechanical Properties ◽

Thermal Stability ◽

Flame Retardant ◽

Polyurethane Foam ◽

Thermal Effects ◽

Oxygen Index ◽

Rigid Polyurethane Foam ◽

Limiting Oxygen Index ◽

Peak Heat Release Rate ◽

The Impact

A novel Flame-Retardant N-(P,P′-diphenyl) phosphorus-based-(3-triethoxysilicon) propylamine (DPTP) was synthesized in this study. The impact of DPTP on the mechanical properties, thermal stability, and flame retardancy of rigid polyurethane foam (RPUF) was studied. The addition of DPTP to RPUF can significantly reduce the undesirable thermal effects and smoke density during combustion, as well as increasing the limiting oxygen index. Compared with pure RPUF, the peak heat release rate of RPUF containing 10 phr of DPTP decreased by 39.4%, while its peak smoke production rate decreased by 49.9%. However, it was also found that the addition of DPTP reduced the compressive strength of RPUF.

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