Investigation the Fire Hazard of Plywoods Using a Cone Calorimeter

Wu, Zhigang; DENG, XUE; LI, LIFEN; Lu, Yu; CHEN, JIE; ZHANG, BENGANG; Xi, Xuedong; ZHANG, QIAOYAN ZHANG

doi:10.37763/wr.1336-4561/66.6.933942

Cited by 3 publications

(2 citation statements)

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“…HRR refers to the heat released from per unit area of material combustion, reflecting the heat releasing rate of materials during combustion Figure a shows the HRR of the four samples.…”

Section: Resultsmentioning

confidence: 99%

“…HRR refers to the heat released from per unit area of material combustion, reflecting the heat releasing rate of materials during combustion. 26 Figure 9a shows the HRR of the four samples. It is observed that the HRR of the ROW sample shows a slowly increasing trend, but the HRR curve of the VOCs-adsorbed samples shows a rapid increase to the peak and then a rapid decrease.…”

Section: Heat Releasementioning

confidence: 99%

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Study on Thermal Risk of Coal-Based Activated Carbon after Adsorbing Acetone, Cyclohexane, and Butyl Acetate

Wang,

Fan,

Wang

et al. 2023

ACS Omega

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Combustion and explosion accidents of the mixture may occur after the adsorption of volatile organic compounds (VOCs) by coal-based activated carbon (CBAC). It is of great significance to explore the oxidation and combustion performance of CBAC before and after adsorbing VOCs in order to prevent the reoccurrence of fire and explosion. Based on the CBAC sample commonly used in industrial production, three types of CBAC samples after adsorbing VOCs, i.e., acetone, cyclohexane, and butyl acetate, were prepared. The oxidation and combustion characteristics of the samples before and after adsorbing VOCs are measured and analyzed by thermal analyzer and cone calorimeter. Thermal analysis results indicate that during the oxidation process, the VOCs in the adsorbed samples will burn in the early stage, generating amounts of heat which may accelerate the oxidation and combustion of CBAC. According to the combustion performance experiments by cone calorimeter, it is also found that the combustion rate of CBAC after adsorbing VOCs is significantly enhanced. The time to ignition is shortened, the heat release rate becomes larger, and the time to reach the peak of heat release rate is significantly moved forward. In addition, the CO yield of the adsorbed sample is significantly improved. In general, VOC adsorption in CBAC can promote oxidation reactions and may result in an enhanced combustibility of CBAC.

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“…HRR refers to the heat released from per unit area of material combustion, reflecting the heat releasing rate of materials during combustion Figure a shows the HRR of the four samples.…”

Section: Resultsmentioning

confidence: 99%

Section: Heat Releasementioning

confidence: 99%

Study on Thermal Risk of Coal-Based Activated Carbon after Adsorbing Acetone, Cyclohexane, and Butyl Acetate

Wang,

Fan,

Wang

et al. 2023

ACS Omega

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Fire hazard of epoxy-based transparent wood

Martinka

Mitterpach

Štefko

et al. 2023

J Therm Anal Calorim

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Transparent wood is a modern bio-renewable material with great potential for both science and industrial applications. However, the fire hazard of transparent wood is still almost unexplored. This study aims to investigate the impact of pristine basswood modification to epoxy-based transparent wood on the fire hazard and to train neural networks for the prediction of heat release rate from mass loss rate of pristine basswood, epoxy-based transparent wood, and epoxy resin. Transparent wood was prepared by lignin modification in pristine small-leaved basswood (Tilia cordata Mill.) and subsequent vacuum infiltration by epoxy resin. The fire hazard of the samples was determined by the cone calorimeter at four heat fluxes of 20–50 kW m−2. The fire hazard of investigated materials was compared based on the critical heat flux, ignition temperature, heat release rate, effective heat of combustion and time to flashover. Transparent wood showed higher resistance to ignition (higher critical heat flux and ignition temperature) than pristine wood. However, other parameters (heat release rate and effective heat of combustion) were higher (worse) and the time to flashover was lower (worse) for transparent wood than for pristine wood. Trained neural networks for predicting heat release rate from the mass loss rate of wood (both pristine and transparent) and epoxy resin showed coefficients of determination from 0.70 to 0.92. Trained neural networks with a coefficient of determinations above 0.90 are usable for low-cost heat release rate measurements in both science and industrial applications.

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Study on Structural Fire Protection and Fire Resistance of Glued Laminated Timber Columns

Korolchenko,

Portnov

2024

Buildings

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Glued wood is one of the most commonly used materials made of wood. Glued wood has many advantages related to its strength characteristics and operation. Nevertheless, due to the use of an adhesive base, it becomes necessary to carefully approach the issue of the fire resistance of building structures made of glued wood. The purpose of this study was to assess the effect of structural fire protection on the fire resistance of glued laminated timber columns; the task of developing methods for experimental and analytical assessments of the fire resistance of glued laminated timber columns, with the possibility of assessing the temperature of the wood under a layer of fire protection, was set, and an analysis of the effectiveness of these methods for assessing the fire resistance of such structures was conducted. The experimental assessment of fire resistance was based on the combined effects of fire and force on structures. The analytical assessment of the fire resistance was carried out using two methods, each of which estimated the time of the beginning of the ignition of the wood, as well as its combustion before the limit state of the structure was reached, but did not ascertain the acting force. As a result of evaluating the effect of structural fire protection on the fire resistance of glued wood columns, data on the heating of wood under a layer of fire protection were obtained, and the relationship between the deformation of the sample and the heating of the layers of fire protection was revealed, consisting of an increase in the ignition time of the wood with an increase in the thickness of the fire protection.

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Investigation the Fire Hazard of Plywoods Using a Cone Calorimeter

Cited by 3 publications

References 0 publications

Study on Thermal Risk of Coal-Based Activated Carbon after Adsorbing Acetone, Cyclohexane, and Butyl Acetate

Study on Thermal Risk of Coal-Based Activated Carbon after Adsorbing Acetone, Cyclohexane, and Butyl Acetate

Fire hazard of epoxy-based transparent wood

Study on Structural Fire Protection and Fire Resistance of Glued Laminated Timber Columns

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