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Synergistic effects of zeolites on a novel intumescent flame-retardant low-density polyethylene (LDPE) system

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Abstract

A char forming agent and silica-gel microencapsulated APP were selected to form novel intumescent flame-retardant system (IFR) to prepare flame-retardant low-density polyethylene (LDPE) composites, and then the influence of zeolites on the thermal and flame-retardant properties of flame-retardant LDPE composites were studied. With the addition of 1 wt% zeolites to LDPE/IFR system, the LOI value increases from 29.0 to 34.0 %. The results of cone calorimetry show that the heat release rate peak and total heat release of the intumescent flame-retardant LDPE composite with 1 wt% zeolites decreases remarkably compared with that of without zeolites. The scanning electron microscopy indicates zeolites with suitable content can improve the quality of the char layer of flame-retardant LDPE composite which is more coherent and dense. The zeolites with the appropriate content can remarkably improve the flame-retardant properties of the LDPE composites.

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Acknowledgements

The study was financially supported by Science Fund of Anhui Education Department (KJ2012A074), Specialized Research Fund of Anhui University of Science and Technology (2010YB009), and the National Natural Science Foundation of China (No. 21001003).

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Authors and Affiliations

  1. School of Energy Resources and Safety, Anhui University of Science and Technology, Huainan, Anhui, 232001, China

    Shibin Nie, Shaohua Qi & Mingshan He

  2. Key Laboratory of Coal Mine Safty and Efficient Exploitation of Minstry of Education, Anhui University of Science and Technology, Huainan, Anhui, 232001, China

    Shibin Nie, Shaohua Qi & Mingshan He

  3. School of Materials Sciences and Engneering, Anhui University of Science and Technology, Huainan, Anhui, 232001, China

    Benxia Li

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  1. Shibin Nie
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  2. Shaohua Qi
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  3. Mingshan He
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  4. Benxia Li
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Correspondence to Shibin Nie or Benxia Li.

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Nie, S., Qi, S., He, M. et al. Synergistic effects of zeolites on a novel intumescent flame-retardant low-density polyethylene (LDPE) system. J Therm Anal Calorim 114, 581–587 (2013). https://doi.org/10.1007/s10973-013-3011-9

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  • DOI: https://doi.org/10.1007/s10973-013-3011-9

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