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Open AccessArticle

Thermodynamic and Kinetic Characteristics of Combustion of Discrete Polymethyl Methacrylate Plates with Different Spacings in Concave Building Facades

by 1,2,3,*, 1,2, 1,2,*, 1,2, 1,2 and 1,2
1
Jiangsu Key Laboratory of Fire Safety in Urban Underground Space, China University of Mining and Technology, Xuzhou 221116, China
2
Key Laboratory of Gas and Fire Control for Coal Mines, China University of Mining and Technology, Ministry of Education, Xuzhou 221116, China
3
State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, No. 1 University Road, Xuzhou 221116, China
*
Authors to whom correspondence should be addressed.
Polymers 2021, 13(1), 167; https://doi.org/10.3390/polym13010167
Received: 5 December 2020 / Revised: 25 December 2020 / Accepted: 31 December 2020 / Published: 5 January 2021
(This article belongs to the Special Issue Performance and Application of Novel Biocomposites II)
Polymethyl methacrylate plates are widely applied to buildings, producing significant fire hazards. It lacks a theoretical basis for the fire risk assessment of polymethyl methacrylate in concave building facades. Therefore, experimental methods are used to investigate combustion characteristics of discrete polymethyl methacrylate plates in a concave building facade. Influences of fuel coverage and structure factor are investigated, which is scant in previous works. When structure factor is invariable, average flame height increases first and then decreases as fuel coverage increases, and the turning point is between 0.64 and 0.76. In total, three different patterns of pyrolysis front propagation are first observed for different fuel coverages. Flame spread rate first increases and then decreases as fuel coverage rises, and the turning point is also between 0.64 and 0.76. When fuel coverage is invariable, the flame spread rate first increases and then decreases with increasing structure factor, and the turning point is 1.2. A model for predicting the flame spread rate of discrete polymethyl methacrylate is also developed. The predicted values are consistent with experimental results. Fuel spread rate of discrete polymethyl methacrylate rises as the fuel coverage increases. The above results are beneficial for thermal hazard evaluation and fire safety design of polymethyl methacrylate used in buildings. View Full-Text
Keywords: polymethyl methacrylate; thermodynamics and kinetics; combustion; discrete flame spread; concave building facade polymethyl methacrylate; thermodynamics and kinetics; combustion; discrete flame spread; concave building facade
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MDPI and ACS Style

An, W.; Peng, L.; Cai, M.; Hu, K.; Li, S.; Wang, T. Thermodynamic and Kinetic Characteristics of Combustion of Discrete Polymethyl Methacrylate Plates with Different Spacings in Concave Building Facades. Polymers 2021, 13, 167. https://doi.org/10.3390/polym13010167

AMA Style

An W, Peng L, Cai M, Hu K, Li S, Wang T. Thermodynamic and Kinetic Characteristics of Combustion of Discrete Polymethyl Methacrylate Plates with Different Spacings in Concave Building Facades. Polymers. 2021; 13(1):167. https://doi.org/10.3390/polym13010167

Chicago/Turabian Style

An, Weiguang; Peng, Lujun; Cai, Minglun; Hu, Kaiyang; Li, Song; Wang, Tao. 2021. "Thermodynamic and Kinetic Characteristics of Combustion of Discrete Polymethyl Methacrylate Plates with Different Spacings in Concave Building Facades" Polymers 13, no. 1: 167. https://doi.org/10.3390/polym13010167

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