Effect of flaky graphite with different particle sizes on flame resistance of intumescent flame retardant coating

Wang, Yachao; Tang, Gongfan; Zhao, JiangPing; Han, Yujiu

doi:10.1016/j.rinma.2020.100061

Cited by 9 publications

(6 citation statements)

References 32 publications

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“…Various studies are available dealing with the preservation of wood. Expandable graphite as a fire retardant used to protect wood is still a new area of research, so it is necessary to continue working on these results [3,17,[30][31][32][33].…”

Section: Resultsmentioning

confidence: 99%

The Effect of Intumescent Coating Containing Expandable Graphite onto Spruce Wood

Kmeťová,

Kačíková,

Kačík

2024

Coatings

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Wood, one of the materials predominantly employed in construction, possesses various advantageous properties alongside certain drawbacks, such as susceptibility to thermal degradation. To enhance wood fire resistance, one approach involves the application of flame retardants. This study compared the fire-retardant effectiveness of expandable graphite, bonded with water glass, as a coating for spruce wood against commercially available fire-retardant treatments. Spruce wood samples (Picea abies (L.) H. Karst) underwent treatment with three distinct retardants: expandable graphite in combination with water glass, Bochemit Antiflash, and Bochemit Pyro. The fire-technical characteristics of the samples were examined by a non-standard test method—a test with a radiant heat source. The experiment evaluated the fire-retardant properties by recording changes in sample mass, burning rate, and temperature difference. The best results among all flame retardants were achieved by expandable graphite in combination with water glass, in all evaluation criteria. Among all the flame retardants used, expandable graphite in combination with water glass achieved the best results in all evaluation criteria.

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Section: Resultsmentioning

confidence: 99%

The Effect of Intumescent Coating Containing Expandable Graphite onto Spruce Wood

Kmeťová,

Kačíková,

Kačík

2024

Coatings

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“…In contrast, a very strong correlation between burning rate and weight loss was confirmed, which is a logical finding. Wang et al [26] studied the effect of the particle size of flaky graphite (1, 2.6, 4.8, 9.5, and 15 µm) on the flame resistance of intumescent flame retardant coatings. The results of the cone calorimeter showed that graphite with an average particle size of 9.5 µm had the highest flame-retarding efficiency due to the formation of continuous laminar char residue.…”

Section: Resultsmentioning

confidence: 99%

“…Its retardation effect is influenced by the method of application to the wood surface, particle size, expansion temperature, etc. [23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

The Influence of Different Types of Expandable Graphite on the Thermal Resistance of Spruce Wood

et al. 2023

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In order to not limit the possibilities of using wood due to its flammability, the implementation of fire protection is an essential requirement. An integral part of the research on the fire protection of wood is the determination of the effectiveness of the applied protective means and their effect on changing its behavior under fire conditions. In this work, samples of spruce wood (Picea abies (L.) H. Karst) (50 mm × 40 mm × 10 mm) were treated with an aqueous solution of sodium silicate and different types of expandable graphite flakes that were applied to the surface of the samples. The fire characteristics of the samples were studied using a non-standard test method, the radiant heat source test, which was used to determine the mass loss, burning rate, and ignition time of the test samples, and the measurement was carried out via visual recording with a thermal camera. The results of the laboratory test method showed a significant positive effect of the application of all types of expandable graphite flakes. The main insight is that a suitable wood modification using expandable graphite flakes in combination with water glass has the potential to reduce mass loss by at least 73 ± 3% and reduce the temperature rise on the surface of the sample. The lower temperature of the surface of the burning material reduces the possibility of heat transfer to the surrounding materials and thus reduces the rate of fire spread.

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“…Influence of particulate sized flaky graphite (FG) on FR of intumescent flame retardant (IFR) coatings (polyester resin-ammonium polyphosphate-urea-pentaerythrite) was investigated via CCT, XRD, and SEM, in order to determine best FG for the preparation of FG-IFR coatings [128] . CC results revealed that doped FG 1500 possessing average particulate dimension of 1500 mesh exhibited superior FR efficiency, demonstrated by the lowest peak heat release rate (p-HRR) of 23.5 kW m −2 at 409 s and fire growth index (FGI) of 0.06 kW m −2 s −1 , attributed to creation of expanded laminar char residue.…”

Section: Flame and Thermal Retardant Coatingsmentioning

confidence: 99%

Recently Emerging Nanotechnological Advancements in Polymer Nanocomposite Coatings for Anti-corrosion, Anti-fouling and Self-healing

Idumah

Obele

Emmanuel

et al. 2020

Surfaces and Interfaces

123

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Effect of flaky graphite with different particle sizes on flame resistance of intumescent flame retardant coating

Cited by 9 publications

References 32 publications

The Effect of Intumescent Coating Containing Expandable Graphite onto Spruce Wood

The Effect of Intumescent Coating Containing Expandable Graphite onto Spruce Wood

The Influence of Different Types of Expandable Graphite on the Thermal Resistance of Spruce Wood

Recently Emerging Nanotechnological Advancements in Polymer Nanocomposite Coatings for Anti-corrosion, Anti-fouling and Self-healing

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