Facile alteration of the molecular structure of phosphonamide for efficient flame retardancy in TPU

Li, Mengqi; Hao, Fenghao; Chen, Yajun; Qian, Lijun

doi:10.1016/j.coco.2023.101759

Cited by 7 publications

(2 citation statements)

References 38 publications

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“…The thermal decomposition products of both pure TPU and TPU composite materials mainly consisted of hydrocarbons (2960 cm –1 ), CO 2 (2360 cm –1 ), esters (1760 cm –1 ), and aromatic compounds (1510 cm –1 ) . In addition, a phosphorus-containing decomposition band (1180 cm –1 ) appeared in TBC, indicating the presence of phosphorus radicals from BP in the thermal decomposition products, which positively affected the flame-retardant TPU in the gas phase during combustion . Furthermore, after the addition of BP-CNTs, the total thermal decomposition signal intensity of TBC in gas-phase products significantly increased and the absorption peak intensities corresponding to esters, aromatic compounds, and hydrocarbon compounds of TBC showed a certain degree of increase.…”

Section: Resultsmentioning

confidence: 99%

“…53 In addition, a phosphorus-containing decomposition band (1180 cm −1 ) appeared in TBC, indicating the presence of phosphorus radicals from BP in the thermal decomposition products, which positively affected the flame-retardant TPU in the gas phase during combustion. 54 Furthermore, after the addition of BP-CNTs, the total thermal decomposition signal intensity of TBC in gas-phase products significantly increased and the absorption peak intensities corresponding to esters, aromatic compounds, and hydrocarbon compounds of TBC showed a certain degree of increase. This indicated the generation of more thermal decomposition products, which was attributed to the dehydration of P 2 O 5 formed by the thermal oxidation of BP, thereby promoting the cyclization, polymerization, and carbonization of the thermal decomposition products of TBC, forming polyaromatic hydrocarbon soot products.…”

Section: Mechanical Properties Of Tbc Composite Foamsmentioning

confidence: 95%

See 1 more Smart Citation

Microwave-Induced Construction of Flame-Retardant TPU Foams with Adjustable Sensitivity for Piezoresistive Sensing

Tang,

Han,

Xia

et al. 2024

Ind. Eng. Chem. Res.

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CNTs feature ultrahigh electrical conductivity and multiwall structure, contributing to the favorable interaction with microwaves, and accordingly evoke drastic energy conversion to the form of heat upon microwave irradiation. Herein, CNTs were ball milling assembled at the surface of expandable thermoplastic polyurethane/black phosphorus (e-TPU/ BP) beads, where BP was used as a flame retardant, and served as the "interfacial sensitizer", resulting in exceptional selective heating to inducing bubble formation in a continuous conductive network of TBC composite foams under the microwave field setting. The sinter-molded TBC composite foam possesses a high sensitivity of 550 kPa −1 over 0−0.4 MPa of compressive stress with an ultralow CNT content of 0.5 wt %, stability of over 1000 cycles, and durability of 5000 s. Moreover, BP also provided excellent flame retardant and antidripping properties at 2 wt % loading. Therefore, by utilizing the intense response of CNTs to microwaves, a universal approach was developed not only for foam molding but also for the functionalization of thermoplastic materials.

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Section: Resultsmentioning

confidence: 99%

Section: Mechanical Properties Of Tbc Composite Foamsmentioning

confidence: 95%