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Flame-retardant effect of modified molecular sieve by ionic liquid in TPU

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Abstract

Thermoplastic polyurethane elastomer (TPU) had a wide application because of the perfect property, while it was still limited by its flammability and flame dripping. In this paper, modified molecular sieve (MMS) by 1-((ethoxycarbonyl)methyl)-3-methylimidazolium hexafluorophosphate ([EOOEMIm][PF6]) was used into TPU as a type of flame agent. The flame-retardant performance of TPU was studied by cone calorimeter (CCT), smoke density test (SDT) and thermogravimetric/infrared spectroscopy (TG-IR), respectively. CCT test indicated that MMS improved flame-retardant performance of TPU effectively by promote the formation of char layer. The peak heat release rate and total heat release declined by 48.4% and 32.5%, respectively, compared to pure TPU when 1.0 mass% MMS was added; SDT test showed that MMS improved the smoke generation performance of TPU without flame; and the TG-IR test proved that MMS improved the thermal stability of TPU even though in nitrogen. So the MMS can apply for flame-retardant TPU well in the future.

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Acknowledgements

The authors gratefully acknowledge the National Natural Science Foundation of China (Nos. 51776101, 51206084), the Natural Science Foundation of Shandong Province (ZR2017MB016) and the Project of the State Administration of Work Safety (shandong-0039-2017AQ). The contributors of mining college of Guizhou university are also be acknowledged.

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Authors and Affiliations

  1. Mining College, Guizhou University, Guiyang, 550025, Guizhou, People’s Republic of China

    Tingting Luo

  2. College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao, 266042, Shandong, People’s Republic of China

    Chuanmei Jiao, Xilei Chen & Huazhen Jiang

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  1. Tingting Luo
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  2. Chuanmei Jiao
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Correspondence to Huazhen Jiang.

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Luo, T., Jiao, C., Chen, X. et al. Flame-retardant effect of modified molecular sieve by ionic liquid in TPU. J Therm Anal Calorim 147, 4141–4150 (2022). https://doi.org/10.1007/s10973-021-10840-0

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  • DOI: https://doi.org/10.1007/s10973-021-10840-0

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