Comparing the effect of nanoclays on the water-resistance of intumescent fire-retardant coatings
DOI:
https://doi.org/10.15587/1729-4061.2021.232822Keywords:
fire protection of steel, organically-modified montmorillonite, intumescent coatings, ethylene vinyl acetate, styrene acrylate, fire resistance limitAbstract
This paper reports a study into the effect of nanoclays on the water-resistance of the intumescent system ammonium polyphosphate/melamine/pentaerythritol/titanium dioxide/polymer (ethylene vinyl acetate (EVA) or styrene acrylate (SA).
It has been established that adding nanoclay to a coating based on ethylene vinyl acetate increases the fire resistance limit of a metal plate by 30 %, and to a coating based on styrene acrylate – by 50 %. At the same time, coatings that include the EVA polymer are characterized by greater fire-retardant efficiency and less water resistance than coatings containing the SA polymer.
It has been shown that intumescent coatings, regardless of the nature of the polymer, under the conditions of 80 % humidity over 800 days their reduce fire-protective properties by an average of 10 %. The loss of coating fire resistance occurs due to the leaching of pentaerythritol, ammonium polyphosphate, and polymer degradation by hydrolysis. The admixtures of nanoclays with a high degree of exfoliation to the studied system create a barrier effect and maximize the chemical formulation of the intumescent coating. The fireproof properties of coatings with organically-modified montmorillonite admixtures are maintained or reduced to 5 % under the conditions of 80 % humidity over 800 days.
It has been determined that the direct effect of water on the coating over a period of more than 2 days leads to a significant decrease in the swelling coefficient of intumescent coatings, regardless of the content of a nanoclay admixture in their composition. At the same time, the half-decay period of coatings without nanoclay, calculated on the basis of solubility constant in water, is 0.5 days. For coatings, which include the admixtures of organically-modified nanoclays, the half-decay period increases to 2 days.
The results reported in this paper could be recommended for designing water-proof fire-resistant reactive-type nano-coatings with prolonged service life.
References
- Yasir, M., Ahmad, F., Yusoff, P. S. M. M., Ullah, S., Jimenez, M. (2019). Latest trends for structural steel protection by using intumescent fire protective coatings: a review. Surface Engineering, 36 (4), 334–363. doi: https://doi.org/10.1080/02670844.2019.1636536
- Puri, R. G., Khanna, A. S. (2016). Intumescent coatings: A review on recent progress. Journal of Coatings Technology and Research, 14 (1), 1–20. doi: https://doi.org/10.1007/s11998-016-9815-3
- Jimenez, M., Bellayer, S., Naik, A., Bachelet, P., Duquesne, S., Bourbigot, S. (2016). Topcoats versus Durability of an Intumescent Coating. Industrial & Engineering Chemistry Research, 55 (36), 9625–9632. doi: https://doi.org/10.1021/acs.iecr.6b02484
- Ji, W., hua, S. W., Miao, Z., Zhen, C. (2014). Study and Prediction for the Fire Resistance of Acid Corroded Intumescent Coating. Procedia Engineering, 84, 524–534. doi: https://doi.org/10.1016/j.proeng.2014.10.464
- Mačiulaitis, R., Grigonis, M., Malaiškienė, J., Lipinskas, D. (2018). Peculiarities of destruction mechanism of polymeric intumescent fire protective coatings. Journal of Civil Engineering and Management, 24 (2), 93–105. doi: https://doi.org/10.3846/jcem.2018.447
- Bilotta, A., de Silva, D., Nigro, E. (2016). Tests on intumescent paints for fire protection of existing steel structures. Construction and Building Materials, 121, 410–422. doi: https://doi.org/10.1016/j.conbuildmat.2016.05.144
- Aziz, H., Ahmad, F. (2016). Effects from nano-titanium oxide on the thermal resistance of an intumescent fire retardant coating for structural applications. Progress in Organic Coatings, 101, 431–439. doi: https://doi.org/10.1016/j.porgcoat.2016.09.017
- Chuang, C.-S., Sheen, H.-J. (2019). Effects of added nanoclay for styrene-acrylic resin on intumescent fire retardancy and CO/CO2 emission. Journal of Coatings Technology and Research, 17 (1), 115–125. doi: https://doi.org/10.1007/s11998-019-00246-x
- Zulkurnain, E. S., Ahmad, F., Gillani, Q. F. (2016). Effects of nano-sized boron nitride (BN) reinforcement in expandable graphite based in-tumescent fire retardant coating. IOP Conference Series: Materials Science and Engineering, 146, 012037. doi: https://doi.org/10.1088/1757-899x/146/1/012037
- Nour El-Dein, A., El-Saeed, M. A., Abo-Elenien, O. M. (2017). Fire-Resistivity Personification Of Waterborne Intumescent Flame-Retardant Nano-Coatings For Steel Structures: Application. IJERA, 7 (8), 1–12. Available at: https://journals.indexcopernicus.com/api/file/viewByFileId/383128.pdf
- Anees, S. M., Dasari, A. (2018). A review on the environmental durability of intumescent coatings for steels. Journal of Materials Science, 53 (1), 124–145. doi: https://doi.org/10.1007/s10853-017-1500-0
- Wang, J., Zhao, M. (2020). Study on the effects of aging by accelerated weathering on the intumescent fire retardant coating for steel elements. Engineering Failure Analysis, 118, 104920. doi: https://doi.org/10.1016/j.engfailanal.2020.104920
- Wang, L. L., Wang, Y. C., Li, G. Q., Zhang, Q. Q. (2020). An experimental study of the effects of topcoat on aging and fire protection properties of intumescent coatings for steel elements. Fire Safety Journal, 111, 102931. doi: https://doi.org/10.1016/j.firesaf.2019.102931
- Vakhitova, L. N. (2019). Fire retardant nanocoating for wood protection. Nanotechnology in Eco-Efficient Construction, 361–391. doi: https://doi.org/10.1016/b978-0-08-102641-0.00016-5
- Gaur, S., Khanna, A. S. (2015). Functional Coatings by Incorporating Nanoparticles. Nano Res. Appl., 1 (1), 1–9. Available at: https://nanotechnology.imedpub.com/functional-coatings-by-incorporating-nanoparticles.php?aid=7651
- Fallah, F., Khorasani, M., Ebrahimi, M. (2017). Improving the mechanical properties of waterborne nitrocellulose coating using nano-silica particles. Progress in Organic Coatings, 109, 110–116. doi: https://doi.org/10.1016/j.porgcoat.2017.04.016
- Zybina, O., Gravit, M., Stein, Y. (2017). Influence of carbon additives on operational properties of the intumescent coatings for the fire protection of building constructions. IOP Conference Series: Earth and Environmental Science, 90, 012227. doi: https://doi.org/10.1088/1755-1315/90/1/012227
- Xu, Z., Zhou, H., Yan, L., Jia, H. (2019). Comparative study of the fire protection performance and thermal stability of intumescent fire‐retardant coatings filled with three types of clay nano‐fillers. Fire and Materials, 44 (1), 112–120. doi: https://doi.org/10.1002/fam.2780
- Wang, Z., Han, E., Ke, W. (2006). Fire-resistant effect of nanoclay on intumescent nanocomposite coatings. Journal of Applied Polymer Science, 103 (3), 1681–1689. doi: https://doi.org/10.1002/app.25096
- EAD 350402-00-1106. Reactive coatings for fire protection of steel elements (2017). EOTA, 32. Available at: https://www.kiwa.com/nl/nl/service/brandwerende-producten-etag-018-ead/ead-350402-00-1106-reactive-coatings-for-fire-protection-of-steel-elements2.pdf/
- Kwang Yin, J. J., Yew, M. C., Yew, M. K., Saw, L. H. (2019). Preparation of Intumescent Fire Protective Coating for Fire Rated Timber Door. Coatings, 9 (11), 738. doi: https://doi.org/10.3390/coatings9110738
- Pimenta, J. T., Gonçalves, C., Hiliou, L., Coelho, J. F. J., Magalhães, F. D. (2015). Effect of binder on performance of intumescent coatings. Journal of Coatings Technology and Research, 13 (2), 227–238. doi: https://doi.org/10.1007/s11998-015-9737-5
- Vakhitova, L., Bessarabov, V., Тaran, N., Redko, A., Anishchenko, V., Zagoriy, G., Popov, A. (2019). Definition of the thermal and fire-protective properties of ethylene-vinyl acetate copolymer nanocomposites. Eastern-European Journal of Enterprise Technologies, 1 (6 (97)), 13–20. doi: https://doi.org/10.15587/1729-4061.2019.154676
- Vakhitova, L., Taran, N., Kalafat, K., Pridatko, S., Prudchenko, A. (2019). Influence of styrolacrylate nanocomposites on fire protective efficiency of intumescent type reactive coating. Journal of Donetsk Mining Institute, 1 (44), 87–99. doi: https://doi.org/10.31474/1999-981x-2019-1-87-99
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