Utilization of inorganic mineral filler material as partial replacement for wood fiber in medium density fiberboard (MDF) and its effect on material properties

Ożyhar, Tomasz; Depnering, Tobias; Ridgway, Cathy J.; Welker, Matthias; Schoelkopf, Joachim; Mayer, Ingo; Thoemen, Heiko

doi:10.1007/s00107-019-01480-1

Cited by 15 publications

(15 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In this study, as the use rate for calcite minerals increased, the mechanical results in the IB values decreased. Ozyhar et al (2020a) performed a study of GCC filler addition on MDF production in which the data of the 550 and 700 density boards showed that the IB properties decreased as the minerals amount increased. Calcite added RX boards provided better results of mechanical properties (internal bond modulus elasticity) compared to R control boards.…”

Section: Internal Bond (Ib) Testmentioning

confidence: 99%

“…The increase in the mineral filler content reduced the effect of interconnection among the fibers, causing MOR and MOE resistance to be adversely affected (Özdemir 2019). In the study of GCC filler addition on MDF production (Ozyhar et al 2020a), the data of the 550, 700, and 850 kgm -³ density boards showed that the bending strength (MOR) properties decreased as the filling amount increased.…”

Section: Bending Strength Test (Mor)mentioning

confidence: 99%

“…It was found that well distributed precipitated calcium carbonate particles and a higher fraction of optically active cellulose surfaces contributed to an increased optical performance of papers with composite fillers. Ozyhar et al (2020a) produced fiberboards with 10%, 20%, and 30% fibers replaced by calcite weight basis (dry/dry) and three different target densities (550, 700, and 850), respectively. According to results, the addition of mineral filler to fiberboards up to grades of 10 wt% had little effect, if at all, on the fiberboards properties.…”

Section: Formaldehyde Gas Analysismentioning

confidence: 99%

“…The produced boards were tested for physical, mechanical, limiting oxygen index (LOI), and thermogravimetric properties. Ozyhar et al (2020a) produced MDF with ground calcium carbonate (GCC) filler addition to make 8 mm thickness boards in the laboratory. The MDF was made with 10%, 20%, and 30% of the fibers replaced by using calcium carbonate on a weight basis (dry/dry) and within target densities of 550, 700, and 850 kg m -³, respectively.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Effect of calcite addition on technical properties and reduction of formaldehyde emissions of medium density fiberboard

Çamlibel

2021

BioRes

View full text Add to dashboard Cite

Physical, mechanical, and formaldehyde emission properties were studied for medium density fiberboard (MDF) produced with oak (75%) and pine (25%) fibers that had been mechanically refined in the presence of calcite particles. The calcite slurry was prepared at two levels of solids, 1.5% and 3% (10 and 20 kg·m-³). Chips were cooked for 4 min at 185 °C, under 8 bar vapor pressure in an Andritz defibrillator. 1.8% liquid paraffin, 0.72% ammonium sulphate solution, and 11% urea-formaldehyde were added by percentage based on oven-dried wood fibers in the blowline at the exit of the defibrator. The fibers were dried to 11% moisture content. MDF boards (2100 mm × 2800 mm × 18 mm) were created using a continuous hot-press process. The addition of calcite in the course of MDF production resulted in improved physical properties, such as thickness swelling (ThS 24 hours) and water absorption (WA 24 hours). MDF boards prepared with calcite exhibited higher internal bond (IB), modulus of rupture (MOR), and modulus of elasticity (MOE). Resistance to axial withdrawal of screw also was increased by addition of 3% calcite. In addition, the lowest levels of formaldehyde emission were observed for MDF prepared with calcite at the 3% level.

show abstract

Section: Internal Bond (Ib) Testmentioning

confidence: 99%

Section: Bending Strength Test (Mor)mentioning

confidence: 99%

Section: Formaldehyde Gas Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of calcite addition on technical properties and reduction of formaldehyde emissions of medium density fiberboard

Çamlibel

2021

BioRes

View full text Add to dashboard Cite

show abstract

“…MDF'ler ağırlık bazında (kuru/kuru) sırasıyla 550, 700 ve 850 kg/m³ hedef yoğunluklarda %10, %20 ve %30 oranlarında kalsiyum karbonat katkılı levhalar üretmişlerdir. Ancak MDF'nin ağaç lifi yerine ağırlıkça %10'dan fazla öğütülmüş kalsiyum karbonat içerdiği, levhaların fiziksel ve mekanik özelliklerini çok olumsuz etkilendiğini bildirilmişlerdir [16]. MDF üretiminde ZnO nano-partiküllerinin %0.5 ve %1.0 oranında üre formaldehit reçinesi ve melamin formaldehit reçinesi ile birleştirerek levhalar üretmişlerdir.…”

Section: Introductionunclassified

Kalsit Mineral Katkılı Orta Yoğunlukta Liflevha (MDF)’nin Yanma Performansının Araştırılması

Çamlibel

Akgül

2021

Mühendislik Bilimleri Ve Araştırmaları Dergisi

View full text Add to dashboard Cite

In this study, in order to increase the fire resistance properties of MDF boards, the possibilities of using calcite mineral in MDF production were investigated. Wood chips were cooked for 4 minutes at 7.5 bar, and 180ºC temperature in an Asplund defibrator. Instead of lignocellulosic fibers used for the manufacture 1 m³ MDF, liquid paraffin before fibrillation, then hardener, resin and calcite mix solutions were added on fibers as 3%, 6%, 9% according to total amount of fibers in blowline, respectively. The fibers were dried to 12% moisture by the dryer. Boards were produced 185°C temperature, 32 kg/cm² pressure and 270 second pressing time by multi-day eight-layer hot press. Boards were sanded by 50, 80 and 120 grit size sanding belts. Combustion tests of MDFs' were carried out FIC, SC, ESC, FIC lux, SC lux, ESC lux, IST, ESCS and weight loss. Consequently, calcite minerals have increased the resistance to fire of MDF as good performance.

show abstract

Evaluating the use of calcium hydrogen phosphate dihydrate as a mineral‐based fire retardant for application in melamine‐urea‐formaldehyde (MUF)‐bonded wood‐based composite materials

Ożyhar¹,

Tschannen

Thoemen

et al. 2021

Fire and Materials

Self Cite

View full text Add to dashboard Cite

Summary Calcium hydrogen phosphate dihydrate (DCPD) was evaluated for its potential as a mineral fire retardant (FR) for application in melamine‐urea‐formaldehyde (MUF)‐bonded wood composites. The efficacy as FR was studied in melamine‐urea‐formaldehyde (MUF)‐bonded three‐layer particleboard as a function of addition quantities of 10‐, 20‐ and 30 wt%. Resistance to fire and mechanical properties were determined by measuring the self‐extinguishing time after flame exposure and internal bond strength, respectively. Combustion behavior was examined on samples with 20 wt% DCPD addition by performing cone calorimetry experiments. The efficacy of DCPD was evaluated by determining the heat release, total heat release rate, smoke production, and smoke production rate and compared to another promising mineral‐based fire‐retardant composition (FRC) based on hydroxyapatite (HA) with deliquescent salt and HA alone. The effect of FR on the curing behavior of MUF in relation to mechanical properties was determined through viscosity measurements of MUF with 10 wt% addition of FR. The results confirmed the fire‐retardant characteristics of DCPD in wood composites, albeit at higher application rates when compared to the FRC, however with no negative impact on resin curing time or mechanical strength. Based on the demonstrated compatibility in MUF, DCPD is considered a promising mineral extender of other FRs for application in UF‐based wood composites.

show abstract

Utilization of inorganic mineral filler material as partial replacement for wood fiber in medium density fiberboard (MDF) and its effect on material properties

Cited by 15 publications

References 12 publications

Effect of calcite addition on technical properties and reduction of formaldehyde emissions of medium density fiberboard

Effect of calcite addition on technical properties and reduction of formaldehyde emissions of medium density fiberboard

Kalsit Mineral Katkılı Orta Yoğunlukta Liflevha (MDF)’nin Yanma Performansının Araştırılması

Evaluating the use of calcium hydrogen phosphate dihydrate as a mineral‐based fire retardant for application in melamine‐urea‐formaldehyde (MUF)‐bonded wood‐based composite materials

Contact Info

Product

Resources

About