Flame retardant effect of 1-aminoethyl-3-methylimidazolium hexafluorophosphate in thermoplastic polyurethane elastomer

Jiao, Chuanmei; Li, Shaoxiang; Chen, Xilei

doi:10.1007/s10973-020-09671-2

Cited by 24 publications

(12 citation statements)

References 37 publications

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“…The absorption peak at 834 cm −1 was attributable to the P‐F asymmetric stretch 34,44,45 . Compared with the spectra of IL, Cot/AEP/IL showed a sharp and narrow peak 35,44 at 834 cm −1 while IL was broad and smooth 34,45 . The different types of peaks all indicated the P‐F bond.…”

Section: Resultsmentioning

confidence: 92%

“…The weak peaks area that appeared at 1324–1468 cm −1 was assigned to the C=N stretches 44 . The absorption peak at 834 cm −1 was attributable to the P‐F asymmetric stretch 34,44,45 . Compared with the spectra of IL, Cot/AEP/IL showed a sharp and narrow peak 35,44 at 834 cm −1 while IL was broad and smooth 34,45 .…”

Section: Resultsmentioning

confidence: 95%

“…Ionic liquids (ILs), composed entirely of ions, have received increasing attention in recent years for their research in flame retardancy due to the good thermal stability, low toxicity, abundance of heteroatoms, and good solubility 31–33 . Zhang et al used two ionic liquids, 1‐aminopropyl‐3‐methylimidazolium hexafluorophosphate ([APMIm]PF 6 ) and (1‐butyl‐methylimidazolium hexafluorophosphate) ([EMIM]PF 6 ), for flame retardation of thermoplastic polyurethane elastomers (TPU) 34 . Wan et al functionalized graphene oxide (GO) with silane coupling agent KH550 and 1‐butyl‐3‐methylimidazolium hexafluorophosphates, which proposed a new method for flame retardant modification of GO to improve the flame retardancy and mechanical properties of polymers 35 .…”

Section: Introductionmentioning

confidence: 99%

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Surface modification of epichlorohydrin‐modified aramid nanofibers using ionic liquid to improve the fire safety and tensile strength of cotton fabrics

Wang

Feng

Piao

et al. 2022

Polymers for Advanced Techs

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In this article, flame‐retardant cotton fabric was prepared by a step‐by‐step dip‐coating method, in which flame retardants were introduced onto the surface of the cotton fabric by hydrogen bonding association and surface grafting reaction. First, the epichlorohydrin‐modified aramid nanofibers (AEP) were accumulated onto the surface of cotton fabric (Cot/AEP) through hydrogen bond association. Subsequently, the ionic liquid (IL) was grafted onto the surface of AEP to obtain Cot/AEP/IL. The fire safe performance of cotton fabrics was investigated by the limiting oxygen index test (LOI), vertical flammability test (VFT), and cone calorimeter test (CCT), and so forth. The LOI value of Cot/AEP/IL was as high as 29.5%. The VFT results showed that Cot/AEP/IL was self‐extinguishing rather than ignited, leaving a char length of 111 mm. The CCT results demonstrated that the peak heat release rate and total heat release of Cot/AEP/IL decreased by 42.5% and 58.8% compared with untreated cotton fabrics, respectively. The TG test showed that Cot/AEP/IL had more residues left than untreated cotton under both N2 and air atmospheres. The presence of phosphorus enables the cotton fabric to generate an aromatic phosphor carbonaceous structure during the combustion process. In addition, the tensile strength of cotton fabric was tested. After the introduction of AEP/IL, the average tensile strength value of untreated cotton improved from 129 to 167 N in the warp direction and 125–155 N in the weft direction. In summary, the introduction of AEP/IL improved both the flame‐retardant and mechanical properties of the cotton fabric significantly.

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Section: Resultsmentioning

confidence: 92%

Section: Resultsmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

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Surface modification of epichlorohydrin‐modified aramid nanofibers using ionic liquid to improve the fire safety and tensile strength of cotton fabrics

Wang

Feng

Piao

et al. 2022

Polymers for Advanced Techs

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“…Micro combustion calorimeter (MCC) can quickly determine parameters with very few samples, such as specific heat release rate, combustion heat, etc 22 . Figure 9 is a graph of the micro calorimeter test results of the PLA (1–9) composites.…”

Section: Interpretation and Discussion Of Resultsmentioning

confidence: 99%

Influence of in‐situ growth of boron nitride with chestnut ball copper cobaltate synergistic ammonium polyphosphate on flame retardancy, smoke suppression, and thermal conductivity of polylactic acid

Yao

Ding

et al. 2022

Polymers for Advanced Techs

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Ammonium polyphosphate (APP) is generally used to prepare fire retardant polymer composites, but it is still a challenge to further improve its flame retardant efficiency. In this study, BN‐CuCo2O4 (BNCC) hybrid was successfully prepared by in‐situ growth of copper cobaltate (CC) on boron nitride (BN) by the hydrothermal method. It was added together with APP to polylactic acid (PLA) to prepare PLA composite materials. Investigations were performed into its influence on the composite's fire‐retardant ability and thermal conductivity. When 3 wt% BNCC and 12 wt% APP was added, the limiting oxygen index (LOI) of the PLA composite reached 31.7%, which was higher than that of pure PLA improved by 69.5% and it reached V‐0 rating of vertical combustion test (UL‐94). The cone calorimeter (CCT) test showed that the addition of 3 wt% BNCC and 12 wt% APP to PLA composites significantly increased both the residual char yield and the efficiency of suppressing smoke production compared to pure PLA and APP/PLA composites. BNCC could further improve its flame retardant efficiency of APP. The thermal conductivity test showed that BNCC further improved the thermal conductivity of PLA composites. Furthermore, the residual char and fire‐retardant mechanism of the composites was analyzed and intensive studied.

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“…的结合能 [21,22] ，在 535.0 eV 和 533.9 eV 处的峰分别对应于 O-F 和 C-O-P 的结合能 [22,23] ，在 688.4 eV 和 686.4 eV 处的峰分别是 C-F 和 P-F 键所对应的结 [25] ；同时，GnP@ILs 在燃烧过程中形成致密的炭层，产生了所谓的"迷宫效应"，使热量和燃烧气体通向聚合物基体的路径"曲折"，从而延缓了可燃气体与聚合物之间的直接接触 [26] 。另一方面由于 HPCTP 的加入会产生大量难燃气体如 NH3 和水蒸气等对可燃性气体进行稀释，从而减缓复合材料的剧烈燃烧；并且 HPCTP 中含较多的磷，会在凝聚相中产生磷酸、焦磷酸等物质促进残炭的生成 [27] 。实际生活中，烟雾是火灾营救过程中的一个重要危害，降低烟雾的产生量至关重要 [28]…”

Section: 环氧树脂(Ep)具有热稳定性高、力学性能好、绝缘性好、耐化学腐蚀等unclassified

The preparation of ionic liquid doped graphene composite and its synergistic flame retardant effect with hexaphenoxy cyclotriphosphazene on epoxy resin

Zhang¹,

Chen²,

Yao³

et al. 2021

Sci. Sin.-Chim

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In this paper, graphene doped ionic liquid nanoplatelets (GnP@ILs) were successfully synthesized by green and environmentally friendly wet ball milling from expandable graphite and 1-butyl-3-methylimidazole hexafluorophosphate ionic liquid ([BMIM]PF6), and its surface morphology, crystal structure and chemical structure were characterized. GnP@ILs alone or mixed with hexaphenoxy cyclotriphosphazene (HPCTP) was added to epoxy resin (EP) to study its effect on the comprehensive properties of EP composites. Limiting oxygen index (LOI), vertical combustion (UL-94) and cone calorimetry test results show that GnP@ILs can improve the fire resistance of EP composites, and the EP composites (EP/7.2wt%HPCTP/1.8wt %GnP@ILs) has the best flame retardant performance, with an LOI of 33.8%, and has passed the UL-94 V 0 rate. The peak heat release rate and total heat release rate of EP/7.2wt%HPCTP/1.8wt %GnP@ILs were decreased by 55.54% and 44.28%, respectively. At the same time, the addition of [BMIM]PF6 enhanced the interface compatibility between the flame retardant and EP, and the tensile strength and impact strength of EP composites were significantly improved.

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Flame retardant effect of 1-aminoethyl-3-methylimidazolium hexafluorophosphate in thermoplastic polyurethane elastomer

Cited by 24 publications

References 37 publications

Surface modification of epichlorohydrin‐modified aramid nanofibers using ionic liquid to improve the fire safety and tensile strength of cotton fabrics

Surface modification of epichlorohydrin‐modified aramid nanofibers using ionic liquid to improve the fire safety and tensile strength of cotton fabrics

Influence of in‐situ growth of boron nitride with chestnut ball copper cobaltate synergistic ammonium polyphosphate on flame retardancy, smoke suppression, and thermal conductivity of polylactic acid

The preparation of ionic liquid doped graphene composite and its synergistic flame retardant effect with hexaphenoxy cyclotriphosphazene on epoxy resin

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