Modeling a thermal conductivity process under the action of flame on the wall of fire­retardant reed

Yuriy Tsapko, Аleksii Tsapko

Abstract


Creating environmentally friendly flame-retardant materials for natural inflammable roof structures will make it possible to control the processes of thermal stability and physical-chemical properties of a protective coating over its life cycle. There is therefore a need to study conditions for the formation of a thermal conductivity barrier and for the establishment of a mechanism that inhibits heat transfer to the material. It was experimentally determined that reed, non-treated with a flame-retardant agent, was ignited under the action of burner in 5 seconds, with the flame spreading throughout the entire surface, which resulted in its complete burning and the loss of mass. The study that we conducted into the influence of a coating on the transfer processes of a high-temperature flame to a material, established the fire protection process mechanisms, which imply the inhibition of such an action. It was proven that this process includes the decomposition of flame retardants under the action of temperature, with heat absorption and release of incombustible gases, the formation of ash-like products at the surface of a natural combustible material, as well as thermal insulation. That made it possible to determine conditions to protect reed from fire by forming a barrier to thermal conductivity. Experimental study has confirmed that a sample of fire-retardant reed withstood a thermal influence; the action of a heat flow lead to the swelling of the impregnation and the coating, which lasted for 120 seconds. We estimated the maximum possible penetration of temperature through the thickness of a coating and established that when reed, protected by the impregnating composition, was exposed to a flame of the burner, temperature at the inner surface was less than 147 °C with the mass loss not exceeding 2.9 %. Even greater efficiency was demonstrated by samples that were treated with the coating; the temperature did not exceed 140 °C, with a 2.5% mass loss. We also established that the coefficient of thermal conductivity, when protected from fire, reaches 1.6 W/(m∙°C) for the impregnating composition, and 1.2 W/(m∙°C) for the coating, respectively.


Keywords


reed fire protection; swelling coatings; thermal conductivity; surface treatment; thermophysical properties

Full Text:

PDF

References


Tsapko, Y., Guzii, S., Remenets, M., Kravchenko, A., Tsapko, O. (2016). Evaluation of effectiveness of wood fire protection upon exposure to flame of magnesium. Eastern-European Journal of Enterprise Technologies, 4 (10 (82)), 31–36. doi: 10.15587/1729-4061.2016.73543

Kryvenko, P., Tsapko, Y., Guzii, S., Kravchenko, A. (2016). Determination of the effect of fillers on the intumescent ability of the organic-inorganic coatings of building constructions. Eastern-European Journal of Enterprise Technologies, 5 (10 (83)), 26–31. doi: 10.15587/1729-4061.2016.79869

Tsapko, J., Tsapko, А. (2017). Simulation of the phase transformation front advancement during the swelling of fire retardant coatings. Eastern-European Journal of Enterprise Technologies, 2 (11 (86)), 50–55. doi: 10.15587/1729-4061.2017.73542

Tsapko, Y., Tsapko, А. (2017). Influence of dry mixtures in a coating on the effectiveness of wood protection from the action of a magnesium flame. Eastern-European Journal of Enterprise Technologies, 5 (10 (89)), 55–60. doi: 10.15587/1729-4061.2017.111106

Krüger, S., Gluth, G. J. G., Watolla, M.-B., Morys, M., Häßler, D., Schartel, B. (2016). Neue Wege: Reaktive Brandschutzbeschichtungen für Extrembedingungen. Bautechnik, 93 (8), 531–542. doi: 10.1002/bate.201600032

Xiao, N., Zheng, X., Song, S., Pu, J. (2014). Effects of Complex Flame Retardant on the Thermal Decomposition of Natural Fiber. BioResources, 9 (3). doi: 10.15376/biores.9.3.4924-4933

Nine, M. J., Tran, D. N. H., Tung, T. T., Kabiri, S., Losic, D. (2017). Graphene-Borate as an Efficient Fire Retardant for Cellulosic Materials with Multiple and Synergetic Modes of Action. ACS Applied Materials & Interfaces, 9 (11), 10160–10168. doi: 10.1021/acsami.7b00572

Cirpici, B. K., Wang, Y. C., Rogers, B. (2016). Assessment of the thermal conductivity of intumescent coatings in fire. Fire Safety Journal, 81, 74–84. doi: 10.1016/j.firesaf.2016.01.011

Carosio, F., Kochumalayil, J., Cuttica, F., Camino, G., Berglund, L. (2015). Oriented Clay Nanopaper from Biobased Components – Mechanisms for Superior Fire Protection Properties. ACS Applied Materials & Interfaces, 7 (10), 5847–5856. doi: 10.1021/am509058h

Fan, F., Xia, Z., Li, Q., Li, Z. (2013). Effects of inorganic fillers on the shear viscosity and fire retardant performance of waterborne intumescent coatings. Progress in Organic Coatings, 76 (5), 844–851. doi: 10.1016/j.porgcoat.2013.02.002

Carosio, F., Alongi, J. (2016). Ultra-Fast Layer-by-Layer Approach for Depositing Flame Retardant Coatings on Flexible PU Foams within Seconds. ACS Applied Materials & Interfaces, 8 (10), 6315–6319. doi: 10.1021/acsami.6b00598

Samarskiy, A. A., Vabishchevich, V. P. (2003). Vychislitel'naya teploperedacha. Moscow: Editorial URSS, 784.

Bahvalov, N. S., Zhidkov, N. P., Kobel'kov, G. M. (1987). Chislennye metody. Moscow: Nauka, 600.

Umnyakova, N. P. (1996). Kak sdelat' dom teplym. Moscow: Stroyizdat, 368.


GOST Style Citations


Evaluation of effectiveness of wood fire protection upon exposure to flame of magnesium / Tsapko Y., Guzii S., Remenets M., Kravchenko A., Tsapko O. // Eastern-European Journal of Enterprise Technologies. 2016. Vol. 4, Issue 10 (82). P. 31–36. doi: 10.15587/1729-4061.2016.73543 

Determination of the effect of fillers on the intumescent ability of the organic-inorganic coatings of building constructions / Kryvenko P., Tsapko Y., Guzii S., Kravchenko A. // Eastern-European Journal of Enterprise Technologies. 2016. Vol. 5, Issue 10 (83). P. 26–31. doi: 10.15587/1729-4061.2016.79869 

Tsapko J., Tsapko А. Simulation of the phase transformation front advancement during the swelling of fire retardant coatings // Eastern-European Journal of Enterprise Technologies. 2017. Vol. 2, Issue 11 (86). P. 50–55. doi: 10.15587/1729-4061.2017.73542 

Tsapko Y., Tsapko А. Influence of dry mixtures in a coating on the effectiveness of wood protection from the action of a magnesium flame // Eastern-European Journal of Enterprise Technologies. 2017. Vol. 5, Issue 10 (89). P. 55–60. doi: 10.15587/1729-4061.2017.111106 

Neue Wege: Reaktive Brandschutzbeschichtungen für Extrembedingungen / Krüger S., Gluth G. J. G., Watolla M.-B., Morys M., Häßler D., Schartel B. // Bautechnik. 2016. Vol. 93, Issue 8. P. 531–542. doi: 10.1002/bate.201600032 

Effects of Complex Flame Retardant on the Thermal Decomposition of Natural Fiber / Xiao N., Zheng X., Song S., Pu J. // BioResources. 2014. Vol. 9, Issue 3. doi: 10.15376/biores.9.3.4924-4933 

Graphene-Borate as an Efficient Fire Retardant for Cellulosic Materials with Multiple and Synergetic Modes of Action / Nine M. J., Tran D. N. H., Tung T. T., Kabiri S., Losic D. // ACS Applied Materials & Interfaces. 2017. Vol. 9, Issue 11. P. 10160–10168. doi: 10.1021/acsami.7b00572 

Cirpici B. K., Wang Y. C., Rogers B. Assessment of the thermal conductivity of intumescent coatings in fire // Fire Safety Journal. 2016. Vol. 81. P. 74–84. doi: 10.1016/j.firesaf.2016.01.011 

Oriented Clay Nanopaper from Biobased Components – Mechanisms for Superior Fire Protection Properties / Carosio F., Kochumalayil J., Cuttica F., Camino G., Berglund L. // ACS Applied Materials & Interfaces. 2015. Vol. 7, Issue 10. P. 5847–5856. doi: 10.1021/am509058h 

Effects of inorganic fillers on the shear viscosity and fire retardant performance of waterborne intumescent coatings / Fan F., Xia Z., Li Q., Li Z. // Progress in Organic Coatings. 2013. Vol. 76, Issue 5. P. 844–851. doi: 10.1016/j.porgcoat.2013.02.002 

Carosio F., Alongi J. Ultra-Fast Layer-by-Layer Approach for Depositing Flame Retardant Coatings on Flexible PU Foams within Seconds // ACS Applied Materials & Interfaces. 2016. Vol. 8, Issue 10. P. 6315–6319. doi: 10.1021/acsami.6b00598 

Samarskiy A. A., Vabishchevich V. P. Vychislitel'naya teploperedacha. Moscow: Editorial URSS, 2003. 784 p.

Bahvalov N. S., Zhidkov N. P., Kobel'kov G. M. Chislennye metody: ucheb. pos. Moscow: Nauka, 1987. 600 p.

Umnyakova N. P. Kak sdelat' dom teplym: sprav. pos. Moscow: Stroyizdat, 1996. 368 p.



DOI: https://doi.org/10.15587/1729-4061.2018.128316

Refbacks

  • There are currently no refbacks.




Copyright (c) 2018 Yuriy Tsapko, Аleksii Tsapko

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.

ISSN (print) 1729-3774, ISSN (on-line) 1729-4061