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A novel EVA-based composite via ceramization toward excellent flame retardance performance and high-temperature resistance

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Abstract

The development of ceramifiable polymer composites is an important means to ensure public safety and meet the emergency operation of power supply lines of public facilities in case of fire. Although there have been many researches on ceramifiable flame-retardant polymer composites and published scientific research achievements, the problem of poor flame-retardant effect of ceramifiable polymer materials due to low flame-retardant efficiency has not been solved. In this study, ethylene–vinyl acetate copolymer (EVA) was used as the matrix, E-glass fiber (EGF) and low softening point glass powder (GP) were selected as the ceramifiable filler (CF), and melamine (MA) and organic modified montmorillonite (OMMT) were used as the complex flame-retardant system. The flame-retardant test results show that when the composition of the composite is EVA/CF (GP:EGF)/MA/OMMT = 35/32 (7:3)/28/5, the flame-retardant property reaches V-0 rating (UL-94), and the corresponding LOI is 27.8. At this time, the bending strength of EVA composite-based ceramic fired at 700 °C reaches 5.1 MPa. TG-IR test results confirmed that a large amount of nonflammable gases from melamine thermal decomposition diluted the combustible gases produced by EVA decomposition, which is the reason why EVA composite has good flame retardancy.

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Funding

The funding was provided by Science and Technology Support Plan Project of Ningxia, China, NKJZ [2015] No. 26 Document, The First-rate Discipline (Education) Construction Project of the Higher Education Institutions of Ningxia, China, No. NXYLXK2017B11, Engineering and Technology Research Center of Liupanshan Resources Grant, and Ningxia Normal University, China, No. HGZD19-03, and Natural Science Foundation of Ningxia, China, 2020AAC03261.

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  1. Engineering and Technology Research Center of Liupanshan Resources, College of Chemistry and Chemical Engineering, Ningxia Normal University, Guyuan, 756000, China

    Hong-Wei Di, Chao Fan, Hua He, Nan Zhang, Jun-Ling Dong & Ya-Ting Wang

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  1. Hong-Wei Di
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  2. Chao Fan
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  3. Hua He
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Di, HW., Fan, C., He, H. et al. A novel EVA-based composite via ceramization toward excellent flame retardance performance and high-temperature resistance. J Therm Anal Calorim 148, 11717–11726 (2023). https://doi.org/10.1007/s10973-023-12524-3

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