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Investigation of magnesium hydroxide functionalized by polydopamine/transition metal ions on flame retardancy of epoxy resin

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Abstract

Aiming to impart epoxy resin (EP) with flame retardancy, magnesium hydroxide (MDH) was sequentially functionalized with four transition metals and polydopamine (PDA) to prepare MDH@M-PDA (M includes Fe3+, Co2+, Cu2+, Ni2+). Compared with MDH, MDH@M-PDA presented better dispersion in EP matrix. The results illustrated that a 30 mass% of MDH@Fe-PDA imparted the EP matrix with best fire retardancy and thermal stability. Specifically, the resultant EP/MDH/MDH@Fe-PDA composites remarkably reduced flammability, which is reflected by high LOI value of 29.3% and UL-94 V-0 ratings. The peak heat release rate (PHRR) and total smoke production (TSP) were reduced by 52% and 21%, respectively. Moreover, the impact and tensile strength of EP/MDH/MDH@M-PDA composites are improved compared with EP/MDH due to the better chemical compatibility of PDA in the EP matrix. Notably, this work provided a feasible design for organo-modified MDH and enriched its practical applications of MDH as functional fillers to polymers.

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Acknowledgements

This work was financially supported by the National Natural Science Foundation of China, grant number 51973124; Technology for Producing Advanced Functional Mg-Based Chemicals, grant number 2020YFC1909302; Liao Ning Revitalization Talents Program, grant number XLYC2005002; “Jie Bang Gua Shuai” of Science and Technology Projects of Liaoning Province in 2021, grant number 2021JH1/10400091; Shenyang Science and Technology Program - Major Key Core Technology Project, grant number 20-202-1-15.

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  1. Danping Zhu, Qingqing Bi have been contributed equally to this work.

Authors and Affiliations

  1. Liaoning Provincial Key Laboratory for Preparation and Application of Special Functional Materials, Shenyang University of Chemical Technology, Shenyang, 110142, China

    Danping Zhu, Yan Jiang & Na Wang

  2. China-Spain Collaborative Research Center for Advanced Materials, College of Materials Science and Engineering, Chongqing Jiaotong University, Chongqing, 400074, China

    Qingqing Bi

  3. College of Civil Engineering, Chongqing Jiaotong University, Chongqing, 400074, China

    Qingqing Bi

  4. IMDEA Materials Institute, C/ Eric Kandel, 2, 28906, Getafe, Madrid, Spain

    Guang-Zhong Yin & De-Yi Wang

  5. Shenyang Research Industrial Technology for Advanced Coating Materials, Shenyang, 110142, China

    Wanlu Fu & Na Wang

  6. Universidad Francisco de Vitoria, Ctra. Pozuelo-Majadahonda Km 1,800, 28223, Pozuelo de Alarcón, Madrid, Spain

    Guang-Zhong Yin & De-Yi Wang

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  1. Danping Zhu
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Contributions

DZ contributed to investigation, methodology, testing, and writing—original. QB contributed to investigation, methodology, testing, and writing—original. G-ZY contributed to methodology, testing, and writing—revision. YJ contributed to investigation, testing, and laboratory-support. WF contributed to testing. NW contributed to supervision, funding Support, and management. D-YW contributed to supervision, methodology, and writing—revision.

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Correspondence to Na Wang or De-Yi Wang.

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Zhu, D., Bi, Q., Yin, GZ. et al. Investigation of magnesium hydroxide functionalized by polydopamine/transition metal ions on flame retardancy of epoxy resin. J Therm Anal Calorim 147, 13301–13312 (2022). https://doi.org/10.1007/s10973-022-11467-5

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