Nano-wollastonite to improve fire retardancy in medium-density fiberboard (MDF) made from wood fibers and camel-thorn

Esmailpour, Ayoub; Taghiyari, Hamid Reza; Majidi, Roya; Morrell, Jeffrey J.; Mohammad-Panah, Behrooz

doi:10.1080/17480272.2019.1641838

Cited by 18 publications

(11 citation statements)

References 35 publications

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“…Nanoscale wollastonite has also been shown to improve the physical and mechanical properties of medium-density fibreboard and particleboard, possibly via bonding between wollastonite and wood cell-wall polymers [ 23 , 24 ]. Nano-wollastonite has been shown to act as a reinforcing filler to improve the shear strength of polyvinyl acetate resin, as a fire-retardant additive for wood coatings, or as an additive for the production ofMedium-Density Fiberboard(MDF) or particleboard panels [ 23 , 25 , 26 , 27 , 28 ]. While nano-wollastonite has many attractive properties, its high cost has limited its commercial application.…”

Section: Introductionmentioning

confidence: 99%

Potential Use of Wollastonite as a Filler in UF Resin Based Medium-Density Fiberboard (MDF)

et al. 2020

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Urea-formaldehyde (UF) resins are primary petroleum-based, increasing their potential environmental footprint. Identifying additives to reduce the total amount of resin needed without adversely affecting the panel properties could reduce these impacts. Wollastonite is a mineral containing calcium and silica that has been used as an additive in a variety of materials and may be useful as a resin extender. Nanoscale wollastonite has been shown to enhance the panel properties but is costly. Micron-scale wollastonite may be a less costly alternative. Medium-density fiberboards were produced by blending a hardwood furnish with UF alone, micron-sized wollastonite alone, or a 9:1 ratio of UF to wollastonite. Panels containing of only wollastonite had poor properties, but the properties of panels with 9:1 UF/wollastonite were similar to the UF-alone panels, except for the internal bond strength. The results suggest that small amounts of micron-sized wollastonite could serve as a resin extender. Further studies are suggested to determine if the micron-sized material has similar positive effects on the resin curing rate.

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Section: Introductionmentioning

confidence: 99%

Potential Use of Wollastonite as a Filler in UF Resin Based Medium-Density Fiberboard (MDF)

et al. 2020

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“…An alternative means, probably more attractive, is so-called nanotechnology. Nanomaterials have unique characteristics, penetrate effectively and deeply into the wood substrate and improve fundamental properties [18][19][20][21][22][23][24][25][26][27][28][29][30][31].…”

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confidence: 99%

Advances in Wood Composites II

Papadopoulos

2020

Polymers

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“…Formulation of NW gel has been reported by Taghiyari et al 7 Boards were conditioned in an environmental room (25 C ± 2 C, 50% ± 3% relative humidity) to reach an equilibrium moisture content of 7.5% ± 2%, before the fire property tests. 39,40 (Figure 1).…”

Section: Board Productionmentioning

confidence: 99%

“…[30][31][32][33][34] Nano-wollastonite was reported to significantly improve the biological resistance of wood and wood-based composites against wooddeterioratingfungi, 35,36 to improve thermal conductivity, physical and mechanical properties of wood-basedcomposites, 36 and to give promising results in lowering ignitability of wood and composites at high retention levels. [37][38][39][40][41] However, the authors came across little or no research projects studying the outcome of nano-wollastonite (NW) at lower levels. Therefore, the present research work was carried out to find out if lower contents of NW can have improving effects on fireproperties of medium-density fiberboard (MDF) as a vastly used wood-based composite around the world.…”

Section: Introductionmentioning

confidence: 99%

Improving fire retardancy of medium density fiberboard by nano‐wollastonite

et al. 2020

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Summary The improving effects of addition of nano‐wollastonite on some fire properties of medium‐density fiberboard (MDF) were studied in this work. Nano‐wollastonite was added at four levels (2%, 4%, 6%, and 8%). The size range of at least 70% of nano‐wollastonite particles were 30 to 110 nm. The results showed statistically significant improving effect of nano‐wollastonite on time to onset of ignition. The improving effect was primarily attributed to an increase in thermal conductivity of board containing nano‐wollastonite. This increase in turn resulted in better curing of resin, and a higher integrity of fibers thereof. Moreover, nano‐particles provided a surface with reduced combustibility and therefore, penetration of fire to the inner layers of boards was delayed, thus improving fire properties. High and significant correlations were found between thermal conductivity coefficients of boards with different fire properties. It was concluded that for applications where fire properties are of prime importance, nano‐wollastonite content of 8% can be recommended. Moreover, further studies are needed to compare and standardize the results obtained from the apparatus used here with those obtained from internationally recognized apparatuses like cone calorimeter.

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Nano-wollastonite to improve fire retardancy in medium-density fiberboard (MDF) made from wood fibers and camel-thorn

Cited by 18 publications

References 35 publications

Potential Use of Wollastonite as a Filler in UF Resin Based Medium-Density Fiberboard (MDF)

Potential Use of Wollastonite as a Filler in UF Resin Based Medium-Density Fiberboard (MDF)

Advances in Wood Composites II

Improving fire retardancy of medium density fiberboard by nano‐wollastonite

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