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TG-FTIR and TG-MS analysis applied to study the flame retardancy of PVC–castor oil-based chlorinated phosphate ester blends

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Abstract

We report here for the first time a chlorinated phosphate ester derived from castor oil (CPCO) for preparing flame-retardant poly(vinyl chloride) (PVC) materials. Flame-retardant PVC materials plasticized with different amount of CPCO were prepared by solvent casting method. The property of flame-retardant PVC materials was investigated with LOI, SEM, TG, TG-FTIR and TG-MS. The results showed that the LOI value of plasticized PVC blends reached 36.3 %. TG-FTIR and TG-MS were used to investigate the pyrolysis products during the thermal degradation process. The nonflammable gases included a few phosphorus-containing compounds, such as P–O–C and P–OH, indicating that more phosphorus-containing compounds were generated during the thermal degradation of CPCO still retained in char residue rather than gas phase, which promoted the formation of high-quality carbon residue. Consolidated and compact structure of carbon residue was produced and covered on the surface of flame-retardant PVC materials, which was effective to prevent the heat flux and air entering PVC matrix, then protected the underlying materials and improved the thermal and flame-retardant performance of PVC materials.

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Acknowledgements

This work was supported by National 12th Five-year Science and Technology Support Plan (Grant No. 2015BAD15B08), Jiangsu Province Natural Science Foundation of China (Grant No. BK20141074).

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Authors and Affiliations

  1. Institute of Chemical Industry of Forest Products, Chinese Academy of Forest (CAF), Nan**g, 210042, People’s Republic of China

    Puyou Jia, Lihong Hu, Meng Zhang & Yong-hong Zhou

  2. Institute of New Technology of Forestry, Chinese Academy of Forest (CAF), Bei**g, 100091, People’s Republic of China

    Lihong Hu & Meng Zhang

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  1. Puyou Jia
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  2. Lihong Hu
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  3. Meng Zhang
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  4. Yong-hong Zhou
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Correspondence to Yong-hong Zhou.

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Jia, P., Hu, L., Zhang, M. et al. TG-FTIR and TG-MS analysis applied to study the flame retardancy of PVC–castor oil-based chlorinated phosphate ester blends. J Therm Anal Calorim 124, 1331–1339 (2016). https://doi.org/10.1007/s10973-015-5199-3

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  • DOI: https://doi.org/10.1007/s10973-015-5199-3

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