Montmorillonite-Synergized Water-Based Intumescent Flame Retardant Coating for Plywood

Hu, Xiaochun; Sun, Zhao; Zhu, Xiaojun; Sun, Zhiqiang

doi:10.3390/coatings10020109

Cited by 28 publications

(18 citation statements)

References 44 publications

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“…Notably, as the MQAS content increased, the corresponding MMT content decreased, and the remaining mass of SBR/FOSM increased, with SBR/FOSM‐4 reaching the highest. This condition occurred, because the introduction of MQAS enhanced the interface adhesion between FOSM and the rubber matrix, and the formed cross‐linked network structure is more stable, 7 thereby enhancing the thermal stability of the composite material 27 . The flake FOSM is evenly dispersed in the rubber matrix to form a more complicated propagation path, thereby strengthening the barrier of MMT to oxygen, free radicals, and heat in the matrix.…”

Section: Resultsmentioning

confidence: 99%

“…Although nanomaterials have a remarkable effect in reducing the peak heat release and mass loss rates, the SBR composites modified with nanomaterials are not satisfactory in traditional UL‐94 and LOI tests 3,6 . However, the nanosheet fillers have excellent smoke suppression and barrier properties and can be combined with other flame‐retardants in a polymer matrix to establish a synergistic flame‐retardant system 7 . Generally, clay nanofillers can promote the formation of the char layer in the condensed phase, thus preventing heat transfer.…”

Section: Introductionmentioning

confidence: 99%

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Flame‐retardant behavior and mechanism of theSBR/MMTcomposites modified by melamine matrix modifier

Cheng

Xuan

Tang

et al. 2021

J of Applied Polymer Sci

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Melamine quaternary ammonium salt (MQAS), a novel flame‐retardant intercalation modifier, was used to prepare the flame‐retardant organic montmorillonite (FOSM), and which was added to SBR by a two‐roll mixing and molding process to prepared the SBR/FOSM composites. The synergistic flame‐retardant effects of sodium‐based montmorillonite (MMT) and MQAS were investigated by the various methods. The LOI value of SBR was only 19.1%, and FOSM‐4 increased the LOI value of SBR to 24.3%. The cone calorimetry test showed that compared with SBR, the total heat release and the peak heat release rate of SBR/FOSM were reduced by 81.39% and 86.08%, respectively. The analysis of MMT after modification showed that the grafting rate of MQAS was about 10% and the interlayer spacing of MMT was enlarged by about 20%. The synergy of MQAS and MMT not only effectively solves the violent droplet of pure SBR combustion, but also avoids the curling problem of only adding MMT. The char morphology and TG‐FTIR showed that FOSM had dual flame‐retardancy in the condensed phase and the gas phase. The synergistic flame‐retardant effect of phosphorus‐free flame‐retardant modifier and MMT will open up new possibilities for flame‐retardant elastomer composites.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Flame‐retardant behavior and mechanism of theSBR/MMTcomposites modified by melamine matrix modifier

Cheng

Xuan

Tang

et al. 2021

J of Applied Polymer Sci

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“…MMT clay has been applied as an inorganic synergist to prepare the water-based intumescent flame retardant (IFR) ornamental coating for plywood. Analysis of heated products has revealed that residual nitrogenous polyaromatic structure and residual mass in the IFR coating were the results of the effect of MMT on the antioxidation properties of the char layer [ 37 ].…”

Section: Introductionmentioning

confidence: 99%

Phenol-Furfural Resin/Montmorillonite Based High-Pressure Green Composite from Renewable Feedstock (Saccharum munja) with Improved Thermo-Mechanical Properties

2020

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This research endeavour aimed to explore the potential of a native, nonedible and low market value plant feedstock, i.e., Saccharum munja for green synthesis of woodware materials and improve its features by incorporating an economical blending material. A significant amount of furfural, i.e., 58%, was extracted from Saccharum munja through the modified acid digestion method. Extracted furfural was reacted with phenol to prepare phenol-furfural resin, an alternative to phenol-formaldehyde resin but with no harmful effects for humans. The synthesized resin was also blended with montmorillonite clay after modification via Dimethyl Sulfoxide (DMSO) treatment for improved thermo-mechanical properties. These resins and composites were characterized by XRD, SEM, and FTIR spectroscopy. Resultant resins and composites were further employed as a binding agent to make high-pressure composite from leftover plant residue by hot-press method. The resultant product was subjected to TGA analysis and furnished high value of degradation temperature (Tdeg), i.e., 607 °C. Prepared high-pressure composite samples were mechanically tested through compression tests by Tinius Olsen Testing Machine and hardness tests by Rockwell Hardness Tester. Its tensile strength value was 58.3 MPa while hardness value was found to be 64 RHB which was greater than mild copper with hardness value 48.9 RHB. Thus, green high-pressure composite material was successfully developed by employing Saccharum munja and montmorillonite clay while no toxic resin was used, nor was any residue left over.

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“…However, owing to the constantly improving simulation modelling techniques for dimensioning and flame retardancy and smoke suppression attributes of Mg-Al LDH-based coatings for wood substrates. In the most recent publication by Hu et al [19] the synergistic action of MMT within water-based intumescent coating was proved to be effective in relation to fire resistance of plywood. All these studies demonstrate that bio-fillers and non-halogenated flame retardants could increase the thermal insulation of the protected substrates while decreasing the toxic potencies of gaseous products of combustion.…”

Section: Introductionmentioning

confidence: 99%

Waterborne Intumescent Coatings Containing Industrial and Bio-Fillers for Fire Protection of Timber Materials

Aqlibous

Tretsiakova-McNally²,

Fateh

2020

Polymers

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Flammability and combustion of softwood treated with intumescent coatings were studied in the present work. The formulations applied onto wood surfaces contained different ratios of industrial fillers, titanium dioxide TiO2 and aluminium trihydroxide Al(OH)3, and/or bio-fillers, eggshell and rice husk ash. Combustion behaviours of unprotected and protected wood samples have been examined with the aid of cone calorimetry performed under the varied levels of thermal flux ranging from 30 to 50 kW/m². The char residues obtained after the completion of cone calorimetry test at 40 kW/m² were analysed by the Raman spectroscopy. The fire protective properties of the studied coatings were strongly influenced by the nature of the fillers as well as by the intensity of thermal irradiance. The incorporation of bio-based fillers into the water-based intumescent formulations significantly improved fire resistance of wood substrates. For example, at 30 kW/m², the Effective Heat of Combustion was reduced by more than 40%, whilst the average Peak to Heat Release Rate had dropped from 193.2 to 150.3 kW/m² for the wood sample protected with the formulation incorporating two industrial and two bio-fillers. Moreover, an application of the studied coatings resulted in a notable reduction of the back surface temperature of the wood specimens.

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Montmorillonite-Synergized Water-Based Intumescent Flame Retardant Coating for Plywood

Cited by 28 publications

References 44 publications

Flame‐retardant behavior and mechanism of theSBR/MMTcomposites modified by melamine matrix modifier

Flame‐retardant behavior and mechanism of theSBR/MMTcomposites modified by melamine matrix modifier

Phenol-Furfural Resin/Montmorillonite Based High-Pressure Green Composite from Renewable Feedstock (Saccharum munja) with Improved Thermo-Mechanical Properties

Waterborne Intumescent Coatings Containing Industrial and Bio-Fillers for Fire Protection of Timber Materials

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