Recycle of magnesium alloy scrap for improving fire resistance, thermal stability, and water tolerance of intumescent fire-retardant coatings
Article
Wang, Cheng, Huo, Siqi, Liu, Shi, Hu, Qinghua, Zhang, Qi and Liu, Zhitian. 2021. "Recycle of magnesium alloy scrap for improving fire resistance, thermal stability, and water tolerance of intumescent fire-retardant coatings." Journal of Coatings Technology and Research. 18 (2), pp. 447-458. https://doi.org/10.1007/s11998-020-00413-5
Article Title | Recycle of magnesium alloy scrap for improving fire resistance, thermal stability, and water tolerance of intumescent fire-retardant coatings |
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ERA Journal ID | 4912 |
Article Category | Article |
Authors | Wang, Cheng, Huo, Siqi, Liu, Shi, Hu, Qinghua, Zhang, Qi and Liu, Zhitian |
Journal Title | Journal of Coatings Technology and Research |
Journal Citation | 18 (2), pp. 447-458 |
Number of Pages | 12 |
Year | 2021 |
Publisher | Springer |
Place of Publication | United States |
ISSN | 1356-0751 |
1476-4865 | |
1547-0091 | |
1935-3804 | |
Digital Object Identifier (DOI) | https://doi.org/10.1007/s11998-020-00413-5 |
Web Address (URL) | https://link.springer.com/article/10.1007/s11998-020-00413-5 |
Abstract | The rapid development and widespread application of magnesium alloy bring about a significant amount of magnesium alloy scrap. Thus, we offer a feasible and simple way to realize the recycling of magnesium scrap in this work, applying it as a synergist in the intumescent fire-retardant coatings for steel structure. With the introduction of magnesium scrap, the fire resistance, thermal stability, and water tolerance of the as-prepared coatings significantly improved. According to ASTM E119 standards, the fire resistance of coatings was investigated in our laboratory. Adding only ~ 0.48 wt% of the scrap decreased the backside temperature of the coated steel from 310°C to 171°C, with a ~ 44.8% reduction, indicating obvious synergy. Moreover, the coating containing ~ 0.48 wt% scrap exhibited excellent thermal stability and water resistance, and its char yield at 800°C and water contact angle reached up to 27% and 80.6°, respectively. Based on the analysis of flame-retardant mechanism, the scrap and intumescent fire-retardant system jointly promoted the formation of an intumescent and compact char residue, thus suppressing the heat transfer and protecting the steel. Hence, using magnesium alloy scrap as a synergist contributed to realizing the recycling of waste and providing practical intumescent fire-retardant coatings for structural steel. © 2020, American Coatings Association. |
Keywords | Fire resistance; Intumescent coatings; Magnesium alloy scrap; Thermal stability; Water tolerance |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 401106. Waste management, reduction, reuse and recycling |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Wuhan Institute of Technology, China |
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