Fire Performance of Intumescent Waterborne Coatings with Encapsulated APP for Wood Constructions
Source abstract
Abstract
In this work, intumescent coatings were prepared for protection of wood from fire. The fire-retardant chemical ammonium polyphosphate (APP) is known to have poor resistance to water and high humidity as it is hygroscopic in nature. To improve the water resistance, durability and fire resistance of the intumescent coating, APP was modified using a hybrid organic-inorganic polysiloxane encapsulation shell prepared by the sol–gel method. The physical and chemical properties of the intumescent mix containing microencapsulated ammonium polyphosphate (EAPP) particles were characterized by X-ray fluorescence (XRF), Fourier transform infrared spectroscopy (FTIR), water absorption, dynamic vapor sorption (DVS) and thermogravimetric analysis (TGA). The EAPP mix showed 50% reduction in water absorption, 75% reduction in water vapor sorption and increased thermal stability when compared to the APP mix. The intumescent coatings were applied on wood samples, and their fire performance was evaluated using a cone calorimeter test. The intumescent coatings containing EAPP mix showed better fire retarding properties with longer time to ignition, lower heat release rate and shorter heat release peak when compared to the coating without EAPP mix. The prepared intumescent coating shows higher resistance to water and moisture, and it has great potential to be used in bio-based construction industry for enhancing the fire resistance of wood.
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Research context
OpenAlex topics: Flame retardant materials and properties · biodegradable polymer synthesis and properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
NSERC Industrial Research Chair on Ecoresponsible Wood Construction, Department of Wood and Forest Sciences, Université Laval, Quebec, QC G1V 0A6, Canada
FPInnovations, 1055 rue du PEPS, Quebec, QC G1V 4C7, Canada
Funding
Natural Sciences and Engineering Research Council
References (39)
Show source-provided references
1. Effectiveness of new wood fire retardants using a cone calorimeter10.1177/0734904117737464 ↗
2. Physical and morphological properties of UV-cured cellulose nanocrystal (CNC) based nanocomposite coatings for wood furniture10.1016/j.porgcoat.2015.12.009 ↗
3. White, R.H. (1983). Use of Coatings To Improve Fire Resistance of Wood. Fire Resistive Coatings: The Need for Standards, ASTM International.10.1520/STP31891S ↗
4. Flammability behaviour of wood and a review of the methods for its reduction10.1186/2193-0414-2-4 ↗
5. Goldsmith, F.P. (2011). Fire Retardant Coatings: An Evaluation of Fire Retardant Coatings as a Means of Protecting Wood Panels, University of British Columbia Library.
6. Recent developments of intumescent fire protection coatings for structural steel: A review10.1177/0734904115626720 ↗
7. Dual-functional intumescent fire-retardant/self-healing water-based plywood coatings10.1016/j.porgcoat.2021.106187 ↗
8. Effects from nano-titanium oxide on the thermal resistance of an intumescent fire retardant coating for structural applications10.1016/j.porgcoat.2016.09.017 ↗
9. Eremina, T., and Korolchenko, D. (2020). Fire protection of building constructions with the use of fire-retardant intumescent compositions. Buildings, 10.10.3390/buildings10100185 ↗
10. An efficiently halogen-free flame-retardant long-glass-fiber-reinforced polypropylene system10.1016/j.polymdegradstab.2010.02.033 ↗
11. Intumescence: Tradition versus novelty. A comprehensive review10.1016/j.progpolymsci.2015.04.010 ↗
12. Fire retardant sol-gel coatings for flexible polyurethane foams10.1039/C6RA02094A ↗
13. An intumescent flame retardant polypropylene system with simultaneously improved flame retardancy and water resistance10.1016/j.polymdegradstab.2014.06.008 ↗
14. Thermal degradation and flammability studies of wood coated with fly ash intumescent composites10.1007/s13196-013-0105-8 ↗
15. Treatments and modification to improve the reaction to fire of wood and wood based products—An overview10.1002/fam.2779 ↗
16. Recent advances for microencapsulation of flame retardant10.1016/j.polymdegradstab.2015.01.008 ↗
17. Idumah, C.I. (2020). Emerging advancements in flame retardancy of polypropylene nanocomposites. J. Thermoplast. Compos. Mater.10.1177/0892705720930782 ↗
18. Preparation, characterization, and thermal properties of novel fire-resistant microencapsulated phase change materials based on paraffin and a polystyrene shell10.1039/D0RA04093B ↗
19. High-efficiency ammonium polyphosphate intumescent encapsulated polypropylene flame retardant10.1002/app.50413 ↗
20. Flame-retardant surface treatments10.1038/s41578-019-0164-6 ↗
21. Preparation of silane precursor microencapsulated intumescent flame retardant and its enhancement on the properties of ethylene–vinyl acetate copolymer cable10.1016/j.compscitech.2012.03.022 ↗
22. Facile fabrication of a novel polyborosiloxane-decorated layered double hydroxide for remarkably reducing fire hazard of silicone rubber10.1016/j.compositesb.2019.107068 ↗
23. Synthesis and characterization of a novel organic-inorganic hybrid char-forming agent and its flame-retardant application in polypropylene composites10.1016/j.jaap.2018.06.013 ↗
24. Halogen-free multicomponent flame retardant thermoplastic styrene–ethylene–butylene–styrene elastomers based on ammonium polyphosphate–expandable graphite synergy10.1021/acs.iecr.7b01177 ↗
25. Improving the flame retardancy and water resistance of polylactic acid by introducing polyborosiloxane microencapsulated ammonium polyphosphate10.1016/j.compositesb.2019.04.033 ↗
26. Effects of carboxymethyl chitosan microencapsulated melamine polyphosphate on the flame retardancy and water resistance of thermoplastic polyurethane10.1016/j.polymdegradstab.2018.12.019 ↗
27. Synergy effect between quaternary phosphonium ionic liquid and ammonium polyphosphate toward flame retardant PLA with improved toughness10.1016/j.compositesb.2020.108192 ↗
28. Preparation and characterisation of flame retardant encapsulated with functionalised silica-based shell10.1080/02652048.2018.1521477 ↗
29. The encapsulation of intumescent flame retardants by poly-siloxane for thermoplastic polyolefin: Fire safety and water resistance10.1016/j.polymdegradstab.2021.109561 ↗
30. An efficient method to improve simultaneously the water resistance, flame retardancy and mechanical properties of POE intumescent flame-retardant systems10.1039/C4RA15971C ↗
31. Preparation and performances of novel waterborne intumescent fire retardant coatings10.1016/j.porgcoat.2016.02.024 ↗
32. Preparation, characterization of microencapsulated ammonium polyphosphate and its flame retardancy in polyurethane composites10.1016/j.matchemphys.2016.02.006 ↗
33. Modification of hemp shiv properties using water-repellent sol–gel coatings10.1007/s10971-018-4621-2 ↗
34. Resilient hemp shiv aggregates with engineered hygroscopic properties for the building industry10.1016/j.conbuildmat.2019.03.327 ↗
35. Influence of the fire retardant, ammonium polyphosphate, on the thermal degradation of poly(methyl methacrylate)10.1002/pol.1978.170160110 ↗
36. Preparation of gel-silica/ammonium polyphosphate core-shell flame retardant and properties of polyurethane composites10.1002/pat.1679 ↗
37. Microencapsulated ammonium polyphosphate with urea–melamine–formaldehyde shell: Preparation, characterization, and its flame retardance in polypropylene10.1002/pat.1095 ↗
38. Effect of polysiloxane and silane-modified SiO2 on a novel intumescent flame retardant polypropylene system10.1002/pat.1810 ↗
39. The influence of KH-550 on properties of ammonium polyphosphate and polypropylene flame retardant composites10.1016/j.polymdegradstab.2011.03.016 ↗