Experimental study on flame spread over discrete extruded polystyrene foam with different fuel coverage rates

Wang, Zhe; Liang, Weimin; Cai, Minglun; Tang, Yanhua; Li, Song; An, Weiguang; Zhu, Guoqing

doi:10.1016/j.csite.2019.100577

Cited by 13 publications

(8 citation statements)

References 5 publications

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“…Flame height is an important parameter for fire risk analysis, and is defined as the vertical distance from the bottom of PMMA flame to flame top in this paper [ 40 , 41 ]. The flame height values are obtained through processing flame videos [ 28 ]. The processing method is explained as follows.…”

Section: Resultsmentioning

confidence: 99%

“…Flame spread rate is defined as the spread rate of the pyrolysis front [ 5 , 14 , 28 , 40 , 41 ]. The flame spread rate may be influenced with chemical structure of materials.…”

Section: Resultsmentioning

confidence: 99%

“…The typical change curve of the pyrolysis front position versus time is shown in Figure 9 a. Linear fitting of Figure 9 a is conducted, and the slope of the fitting line is the experimental flame spread rate [ 5 , 14 , 28 , 40 , 41 ]. The experimental flame spread rates under different structure factors and fuel coverages are shown in Figure 9 b.…”

Section: Resultsmentioning

confidence: 99%

“…Miller et al [ 6 ] studied the upward flame spread characteristics of PMMA when noncombustible isolation strips are arranged at the same spacing, and indicated that the flame spread rate increases first and then decreases as fuel coverage (ƒ) decreases, and reaches its maximum when ƒ = 0.64. Wang et al [ 28 ] indicated that the average flame spread rate increases as fuel coverage rate rises. In addition, there is a positive correlation between average flame height and fuel coverage.…”

Section: Introductionmentioning

confidence: 99%

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

Peng

Cai

et al. 2021

Polymers

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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.

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Section: Resultsmentioning

confidence: 99%

“…Flame spread rate is defined as the spread rate of the pyrolysis front [ 5 , 14 , 28 , 40 , 41 ]. The flame spread rate may be influenced with chemical structure of materials.…”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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

Peng

Cai

et al. 2021

Polymers

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“…They have good thermal resistance, are moisture-resistant and are often used in insulating walls, roofs and foundations (31.0–38.0 mW/(m·K)) [ 18 ]. The decreased flammability of EPS and XPS is achieved by adding various flame retardants, which increase the final product’s price and may cause health concerns [ 19 ].…”

Section: Introductionmentioning

confidence: 99%

Rapeseed Oil as Feedstock for Bio-Based Thermoset Foams Obtained via Michael Addition Reaction

Kirpluks,

Abolins,

Eihe

et al. 2023

Polymers

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Rapeseed oil was used to develop thermoset foams via Michael addition reaction by mixing two liquid components, Michael donor and Michael acceptor. The foaming of the curing thermoset was achieved by the physical blowing agent which expanded from the reacting foam mass due to an exothermic curing reaction. The influence of the rapeseed oil-based Michael donor functionality on the foaming process and the characteristics of the obtained thermoset foams was studied. The 1,1,3,3-tetramethylguanidine catalyst’s influence on the foaming process kinetics was studied using FOAMAT equipment. The curing of the bio-based thermoset was analysed using a dielectric polarisation sensor. The morphology of the developed thermoset foam was analysed using a scanning electron microscope and the obtained foams were characterized using TGA, DSC, DMA and mechanical analysis tests. A direct correlation between the thermoset foam polymer crosslinking density and foaming reactivity, mechanical properties and glass transition temperature were determined. Obtained rapeseed oil based thermoset foams had a relatively low thermal conductivity of 33.9–35.4 mW/(m·K) which allows their use as thermal insulation material in civil engineering applications.

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Impact of core thickness and opening height on the combustion characteristics of polyethylene sandwich panels

Wu,

Fu,

Zhang

et al. 2024

Fire and Materials

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Polyethylene (PE) sandwich panels are being increasingly used in external building insulation, but they may also contribute to the upward spread of flames during fires. This work investigates the impact of core thickness and opening height on the combustion characteristics of PE sandwich panels. Small‐scale experiments and numerical simulations show that flame stretching and intermittent flames occurr during combustion. The average flame spread height is proportional to the thickness and the opening height, and a dimensionless relationship between the flame height and the characteristic length is established. As the thickness increases, the high‐temperature zone within the PE sandwich panels increases. The average mass loss rate is proportional to the thickness and opposite to the opening height. The findings of this study hold crucial theoretical significance for ensuring the safe design of windows and PE sandwich panels in high‐rise buildings.

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Experimental study on flame spread over discrete extruded polystyrene foam with different fuel coverage rates

Cited by 13 publications

References 5 publications

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

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

Rapeseed Oil as Feedstock for Bio-Based Thermoset Foams Obtained via Michael Addition Reaction

Impact of core thickness and opening height on the combustion characteristics of polyethylene sandwich panels

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