Effects of carbon materials on fire protection and smoke suppression of waterborne intumescent coating

Wang, Zhan; Chen, Le; Cui, Fusheng; Gu, Zhaozhan; Jiang, Juncheng

doi:10.1016/j.porgcoat.2019.105491

Cited by 28 publications

(25 citation statements)

References 51 publications

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“…Another popular tool to characterize intumescent chars is scanning electron microscopy (SEM). 17,27 Most studies were again limited to qualitative observations, 28 but in a few cases, porosities and pore sizes were also calculated. 17,27 However, the contrast in SEM is generally low and the recorded image is a two-dimensional (2D) projection of a rough, uneven surface, making it very difficult to distinguish pore voids and walls.…”

Section: ■ Introductionmentioning

confidence: 99%

Quantitative Characterization of Highly Porous Structures with Fluorescence Microscopy and Microcomputed Tomography

Dreyer

Gundlach

Weinell

et al. 2021

Ind. Eng. Chem. Res.

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In this study, a rapid and versatile methodology for quantitative pore structure characterization is described taking the example of intumescent char. The char porosity and pore structure tend to be difficult to quantify but are decisive for the material’s thermal conductivity and thus performance. The methodology described here uses a fluorescent dye containing epoxy to impregnate the char. After curing, the sample is cut and polished, followed by imaging with a fluorescence microscope. The recorded images are segmented using an open-source interactive machine learning program, followed by automated pore size and porosity measurements. Volume-based three-dimensional (3D) pore size distributions are calculated via stereography and compared to X-ray microcomputed tomography (μ-CT) results. The pore aspect ratio and tortuosity of the solid char phase are also discussed. It is shown that the fluorescence microscopy methodology produces high-resolution images with excellent contrast, while similar pore metrics (porosity of 81.8%, average volume-based pore size of 70.5 μm) to those for μ-CT are obtained.

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Section: ■ Introductionmentioning

confidence: 99%

Quantitative Characterization of Highly Porous Structures with Fluorescence Microscopy and Microcomputed Tomography

Dreyer

Gundlach

Weinell

et al. 2021

Ind. Eng. Chem. Res.

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“…The first stage at 25–120 °C corresponding to a strong DTG peak is ascribed to the removal of water and other small molecules in the coatings with a mass loss of 9.68–12.36 wt%. 45 The second stage at 120–180 °C is mainly ascribed to the evaporation of residual solvents and volatile organic compounds. 46,47 For coatings filled with vermiculite, the exclusion of interlayer water from vermiculite are also contributed to the total mass loss of 5.39–8.09 wt% at this stage.…”

Section: Resultsmentioning

confidence: 99%

“…According to the initial decomposition and nal decomposition temperature of DTG peaks, all the coatings exhibit four similar decomposition stages in the temperature ranges of 25-120 C, 120-180 C, 180-550 C and 550-800 C. The rst stage at 25-120 C corresponding to a strong DTG peak is ascribed to the removal of water and other small molecules in the coatings with a mass loss of 9.68-12.36 wt%. 45 The second stage at 120-180 C is mainly ascribed to the evaporation of residual solvents and volatile organic compounds. 46,47 For coatings lled with vermiculite, the exclusion of interlayer water from vermiculite are also contributed to the total mass loss of 5.39-8.09 wt% at this stage.…”

Section: Fire Retardancy Propertymentioning

confidence: 99%

Synergistic effect of aluminum diethylphosphinate/sodium stearate modified vermiculite on flame retardant and smoke suppression properties of amino coatings

Wang

Wen

et al. 2021

RSC Adv.

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“…Based on the data of char layer, the char layer of SP-3 exhibited excellent expansion performance. According to the previous studies, the reproof coatings with high expansion have excellent re protection [26,27].…”

Section: Fire Protection Testmentioning

confidence: 89%

Effect of Bagasse Fiber As the Renewable Environmentally Friendly Material on the Properties of the Waterborne Intumescent Fireproof Coating

Wang

Sun

et al. 2021

Preprint

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Bagasse was applied as fire-retardant filler to prepare the waterborne intumescent fireproof coating. The effect of bagasse on the properties of the fireproof coating was investigated by fire protection test, thermogravimetric (TG), scanning electron microscope (SEM), energy dispersive spectrometer (EDS), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), water resistance test and mechanical properties test. The result demonstrated the coating contained 1.5wt.% bagasse performed best in fire protection, thermal stability, oxidation resistance. Moreover, the char layer was dense and continuous. However, the fireproof coating contained 2 wt.% bagasse had excellent performance in water resistance test and mechanical properties test due to its properties of fiber. In addition, the components and chemical structure of char layer were characterized to study the flame retardant mechanism of bagasse in the fireproof coating.

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Effects of carbon materials on fire protection and smoke suppression of waterborne intumescent coating

Cited by 28 publications

References 51 publications

Quantitative Characterization of Highly Porous Structures with Fluorescence Microscopy and Microcomputed Tomography

Quantitative Characterization of Highly Porous Structures with Fluorescence Microscopy and Microcomputed Tomography

Synergistic effect of aluminum diethylphosphinate/sodium stearate modified vermiculite on flame retardant and smoke suppression properties of amino coatings

Effect of Bagasse Fiber As the Renewable Environmentally Friendly Material on the Properties of the Waterborne Intumescent Fireproof Coating

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