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Combustion behavior of poplar (Populus adenopoda Maxim.) and radiata pine (Pinus radiata Don.) treated with a combination of styrene-acrylic copolymer and sodium silicate

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Abstract

Poplar (Populus adenopoda Maxim.) and radiata pine (Pinus radiata Don.) wood were treated with an aqueous solution containing styrene-acrylic copolymer (SAC) and sodium silicate (SS). The effects of this treatment on the thermal stability and combustion behavior of the wood were determined. Thermogravimetric (TG) analysis showed that treatment in the presence of SS resulted in earlier thermal degradation compared to samples untreated and treated with SAC alone. Cone calorimetry showed that treatment of wood with SAC alone resulted in increased total heat release, total smoke production, and CO and CO2 concentration. Wood treated with SAC/SS was more difficult to ignite as evidenced by longer ignition time and higher limiting oxygen index; however, the treatment did not reduce the production of smoke and carbon oxide. Scanning electron microscopy and energy dispersive X-ray analysis of residual char indicated that SS was mainly deposited in the lumina of vessel or tracheid, and SS distribution in wood was not uniform. These findings demonstrate that incorporation of SS retards the flame of SAC-treated wood; however, the fire risk is not reduced due to dense smoke and CO production.

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Acknowledgements

This work was supported by the National Key Research and Development Program of China (2017YFD0600203), the National Natural Science Foundation of China (31470585 & 31500469), and the Natural Science Foundation of Heilongjiang Province, China (JC2015006).

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Authors and Affiliations

  1. Key Laboratory of Bio-based Material Science and Technology (Ministry of Education), College of Material Science and Engineering, Northeast Forestry University, 26 Hexing Road, Harbin, 150040, People’s Republic of China

    Thi Tham Nguyen, Zefang Xiao, Fengqiang Wang, Zhongguo Zheng, Wenbo Che & Yanjun Xie

  2. Wood Industry College, Vietnam National University of Forestry, Xuan Mai, Chuong My, Hanoi, 10000, Vietnam

    Thi Tham Nguyen

  3. College of Landscape Architecture and Interior Design, Vietnam National University of Forestry, Xuan Mai, Chuong My, Hanoi, 10000, Vietnam

    Thi Vinh Khanh Nguyen

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  1. Thi Tham Nguyen
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  2. Thi Vinh Khanh Nguyen
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  4. Fengqiang Wang
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Correspondence to Zefang Xiao or Yanjun Xie.

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Nguyen, T.T., Nguyen, T.V.K., Xiao, Z. et al. Combustion behavior of poplar (Populus adenopoda Maxim.) and radiata pine (Pinus radiata Don.) treated with a combination of styrene-acrylic copolymer and sodium silicate. Eur. J. Wood Prod. 77, 439–452 (2019). https://doi.org/10.1007/s00107-019-01401-2

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  • DOI: https://doi.org/10.1007/s00107-019-01401-2

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