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Trace analyses of flame-retardant in pyrolysis of XPS foams and its revelation for flame-retardant optimization

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Abstract

The objective of this work is to study the detailed effects of flame-retardant on the pyrolysis behaviors of XPS foams. Thermogravimetric experiments are conducted in air atmosphere for flame-retardant and three XPS foams at different heating rates. The results show that the DTG peak of flame-retardant is higher at much lower temperatures than that of the flame-retardant foams and non-retardant one. It surprisingly suggests that the DTG peak of B2-retardant XPS foam is higher than that of B1-retardant one although more flame-retardant has been added into B1-retardant sample during manufacturing. The detailed DTG curves in local temperature ranges (260–360 °C) explain the non-monotonic effects of flame-retardant mass fraction on the pyrolysis behaviors of XPS foams. It is also reminded that the DTG peaks information is not always enough in analyzing the pyrolysis of flame-retardant materials in research and development. Detailed DTG curves in specific temperature ranges might reveal some more important technical and even philosophical principles. Finally, a proper difference between the temperatures for DTG peaks of flame-retardant and the polymers can be one of the key parameters in searching for new flame-retardants for various polymers.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (51476157), the Shanghai Natural Science Foundation (15ZR1408100), the Fundamental Research Funds for the Central Universities (WK2320000032, WK2320000035). The authors thankfully acknowledge all these supports.

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Authors and Affiliations

  1. Shanghai Fire Research Institute of MPS, Shanghai, 200032, China

    Yun Yang

  2. State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, 230027, China

    Qiyuan Xie & Xinyi Tang

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  1. Yun Yang
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  2. Qiyuan Xie
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  3. Xinyi Tang
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Correspondence to Qiyuan Xie.

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Yang, Y., Xie, Q. & Tang, X. Trace analyses of flame-retardant in pyrolysis of XPS foams and its revelation for flame-retardant optimization. J Therm Anal Calorim 132, 1893–1898 (2018). https://doi.org/10.1007/s10973-018-7064-7

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  • DOI: https://doi.org/10.1007/s10973-018-7064-7

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