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Flame retardant epoxy resin based on bisphenol A epoxy resin modified by phosphoric acid

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Abstract

Flame retardant epoxy resin (FREP) were synthesized from phosphoric acid and bisphenol A epoxy resin (BAEP). The structure of the FREP was characterized using FTIR and 31P NMR. Then, several FREP/BAEP mass ratios were used to obtain materials with different phosphorus contents. The properties of the thermosetting materials were evaluated by limiting oxygen index, UL 94, cone calorimeter test, and thermogravimetric analysis. The results showed that the heat release rates and smoke production rates decreased greatly, and char residue increased with the increasing of FREP. It indicates that good flame retardant properties are related to the formation of a protective phosphorus-rich char layer.

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Acknowledgements

The authors gratefully acknowledge the National Basic Research Program of China (973 Program, No. 2012CB724609), National Natural Science Foundation of China (No. 51206084) and the Out-standing Young Scientist Research Award Fund from Shandong Province (BS2011CL018).

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Authors and Affiliations

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

    Chuanmei Jiao, Jinlong Zhuo, Xilei Chen & Shaoxiang Li

  2. Marine Chemical Research Institute, Qingdao, Shandong, 266071, People’s Republic of China

    Huajin Wang

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  1. Chuanmei Jiao
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  2. Jinlong Zhuo
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  3. Xilei Chen
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  4. Shaoxiang Li
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  5. Huajin Wang
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Correspondence to Xilei Chen.

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Jiao, C., Zhuo, J., Chen, X. et al. Flame retardant epoxy resin based on bisphenol A epoxy resin modified by phosphoric acid. J Therm Anal Calorim 114, 253–259 (2013). https://doi.org/10.1007/s10973-012-2867-4

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  • DOI: https://doi.org/10.1007/s10973-012-2867-4

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