Ultra-efficient, organic-inorganic hybrid, highly-intumescent fire-retardant coatings for various construction materials
Article
Article Title | Ultra-efficient, organic-inorganic hybrid, highly-intumescent fire-retardant coatings for various construction materials |
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ERA Journal ID | 3470 |
Article Category | Article |
Authors | Zhang, Shuo, Wang, Ruiping, Liu, Junxiu, Huo, Siqi, Song, Pingan, Hu, Xinrui, Li, Bin and Xu, Miaojun |
Journal Title | Construction and Building Materials |
Journal Citation | 489 |
Article Number | 142439 |
Number of Pages | 13 |
Year | 2025 |
Publisher | Elsevier |
Place of Publication | Netherlands |
ISSN | 0950-0618 |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.conbuildmat.2025.142439 |
Web Address (URL) | https://www.sciencedirect.com/science/article/abs/pii/S0950061825025905 |
Abstract | Intumescent fire-retardant coatings have been widely applied in different substrates due to ease of preparation and great fire protection. However, under prolonged flames, the intumescent char layer tends to collapse and fail, which has prompted the researchers and engineers to develop more effective intumescent fire-retardant coatings. Herein, an ultra-efficient organic-inorganic hybrid intumescent fire-retardant coating (MPDF5) was simply prepared by utilizing commercial melamine-urea-formaldehyde (MUF), piperazine pyrophosphate (PPAP), dimelamine pyrophosphate (DMPY), and industrial waste fly ash (FA). Besides high adhesion and pencil hardness, MPDF5 effectively increased the compressive strength of rigid polyurethane foam (RPUF). Notably, RPUF@MPDF5 with 100 µm of MPDF5 showed superior self-extinguishing performance and easily passed the vertical combustion (UL-94) V-0 rating. The total heat release (THR) and total smoke production (TSP) of RPUF@MPDF5 were decreased by 89.1 % and 76.4 % relative to those of the untread RPUF, indicative of remarkable fire retardancy and smoke suppression. The MPDF5 coating can also significantly boost the fire retardancy of wood and steel, demonstrating that it can be applied in different construction materials. Under fire, MPDF5 can rapidly decompose and dehydrate into viscous char precursors, and the released gases ensured them to form intumescent char layers on substrate surface. Moreover, porous FA assembled in the external char to enhance thermal insulation and strengthen char surface. Thus, this work provides a feasible waste utilization strategy to develop ultra-efficient yet versatile, intumescent fire-retardant coatings. |
Keywords | Rigid polyurethane foam; Intumescent fire-retardant coating; Waste reuse; Fire protection; Versatility |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 400505. Construction materials |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | Northeast Forestry University, China |
School of Engineering | |
Centre for Future Materials | |
School of Agriculture and Environmental Science |
https://research.usq.edu.au/item/zy5vv/ultra-efficient-organic-inorganic-hybrid-highly-intumescent-fire-retardant-coatings-for-various-construction-materials
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