Synergistic effect of combining amino trimethylphosphonate calcium and expandable graphite on flame retardant and thermal stability of rigid polyurethane foam

Zhang, Xu; Sun, Simiao; Liu, Bing; Wang, Zhi; Xie, Hua

doi:10.1080/1023666x.2022.2070694

Cited by 14 publications

(12 citation statements)

References 25 publications

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“…When 25 wt% of DMM@NC is added to RPUF, the maximum thermal weight loss temperature of the resulting DMM@NC/RPUF composite is 326.2 °C, the maximum thermal weight loss rate is 0.67% min −1 , and the amount of residue at 800 °C is 38.23%. This is because DMM@NC in the composite decomposes due the formation of phosphor compounds, promoting the dehydration of RPUF to form a dense char layer on the surface of the DMM@NC/RPUF composite, 34,35 and hindering the conduction of heat and preventing further degradation. Thus, DMM@NC greatly improves the thermal stability of RPUF.…”

Section: Resultsmentioning

confidence: 99%

The preparation and performance evaluation of flame-retardant antistatic composites based on polyurethane

Zhan,

Shi,

Wang

et al. 2024

New J. Chem.

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Section: Resultsmentioning

confidence: 99%

The preparation and performance evaluation of flame-retardant antistatic composites based on polyurethane

Zhan,

Shi,

Wang

et al. 2024

New J. Chem.

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“…The ame-retardance of EG is attributed to the solidi ed phase ame-retardant mechanism, which realizes ame-retardance by delaying or interrupting solid substances to generate ammable substances (Xia et al 2022;Zhang et al 2022). Evidently, the EG expanded after being heated to form interwoven worms, as shown in Fig.…”

Section: Flame-retardancy Of Cellulose/expandable Graphite Aerogelsmentioning

confidence: 99%

Cellulose/Expandable Graphite Composite Aerogels with Good Flame- Retardant and Filtration Performance

Gang

et al. 2022

Preprint

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Cellulose has been widely used in filtration owing to its abundance, low density, and high specific surface area. However, the use of cellulose-based scaffolds for filtration under high temperatures or with sparks is difficult to realize because cellulose is highly flammable. To develop an advanced cellulose-based filtration material with excellent flame-retardant and filtration performance, in this study, an ice template is employed to prepare a cellulose/expandable graphite (EG) aerogel with a direction porous structure for filtration. The effect of the EG concentration in the aerogel on the aerogel’s physical properties, as well as its flame-retardance and filtration performance is investigated. Experimental data indicates that a compound aerogel with a 30 wt% EG concentration is extinguished immediately after leaving the fire source and has a self-extinguishing time as short as 0.155 s. The formation of a direction porous structure in cellulose/EG aerogels provides a pathway for air movement during the filtration process. The use of EG could improve the filtration performance of cellulose aerogels by increasing the specific surface area. When the EG concentration in the aerogel is 30 wt%, the blocking efficiency of particle sizes less than 0.3 and 0.5 µm reaches 98 % and 99 %, respectively, and the blocking efficiency of particle sizes less than 1.0 µm is 96 %. As-prepared cellulose/EG aerogels have good mechanical properties and thermal stability, which implies that they can be used for filtration under high temperatures and sparks. Moreover, the filtration performance of cellulose/EG aerogels prepared using ice templates with direction porous structure and excellent flame-retardance can potentially be used for filtration-based applications under high temperature and electrical spark conditions. The use of EG and direction porous structures in cellulose aerogels provides a novel idea for the functionalization of cellulose scaffolds.

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“…Zhang et al investigated the synergistic effect of Ca 2+ ‐ATMP/Fe 2+ ‐ATMP and EG on the flame retardant and thermal stability of RPUFs. The experimental results showed that when the ratio of Ca 2+ ‐ATMP/Fe 2+ ‐ATMP to EG was 1:5, the LOI value of RPUF was 26.3% and 27.1% 16,17 …”

Section: Introductionmentioning

confidence: 99%

“…The experimental results showed that when the ratio of Ca 2+ -ATMP/Fe 2+ -ATMP to EG was 1:5, the LOI value of RPUF was 26.3% and 27.1%. 16,17 Flynn-Wall-Ozawa and Kissinger methods were applied to determine the activation energy of propellants with different conversion rates. The results indicated that the calculation results of the two methods are highly, which trends were the same.…”

Section: Introductionmentioning

confidence: 99%

Synergy between manganese phytate and expandable graphite on thermal stability and combustion behavior of rigid polyurethane foam

Zhang

Sun

et al. 2023

Polymers for Advanced Techs

Self Cite

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Rigid polyurethane foam (RPUF) modified by self-made manganese phytate (MnPa) and expandable graphite (EG) has been prepared successfully. The thermal stability and combustion behavior of the modified RPUFs (MEPUF) have been studied using the thermogravimetric analysis, pyrolysis kinetics analysis, smoke density analysis, limiting oxygen index (LOI), and UL-94 level test. When compared to MEPUF1 (MnPa/EG = 3/1), MEPUF2 (MnPa/EG = 1/1) had a 9.1 C higher initial decomposition temperature and had a greater activation energy. Additionally, the smoke density experiment demonstrated that the light transmittance of MEPUF2 increased by 5.1% compared with MEPUF1 in 0-70s and the LOI of MEPUF2 reached 23%. The current investigation indicated that MEPUF2 had better thermal stability and flame retardancy.

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Synergistic effect of combining amino trimethylphosphonate calcium and expandable graphite on flame retardant and thermal stability of rigid polyurethane foam

Cited by 14 publications

References 25 publications

The preparation and performance evaluation of flame-retardant antistatic composites based on polyurethane

The preparation and performance evaluation of flame-retardant antistatic composites based on polyurethane

Cellulose/Expandable Graphite Composite Aerogels with Good Flame- Retardant and Filtration Performance

Synergy between manganese phytate and expandable graphite on thermal stability and combustion behavior of rigid polyurethane foam

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