Published: Aug. 6, 2024
Language: Английский
Forests, Journal Year: 2024, Volume and Issue: 15(5), P. 802 - 802
Published: April 30, 2024
The wood-based panel industry is experiencing an excessive accumulation of solid residues from the production medium-density fiberboard (MDF) panels and moldings. It possible to create new MDF products with acceptable physical mechanical properties by revaluing residues. Additionally, those products’ thermal can be improved incorporating phase change materials (PCMs). This study aims develop a made residues, capable storing energy. Two types PCMs (liquid microencapsulated), two PCM ratios (2% 6%), adhesives (urea-formaldehyde phenol-formaldehyde) were used produce eight different panels. vertical density profile, thickness swelling, water absorption, internal bond (IB), static bending properties—modulus elasticity (MOE) modulus rupture (MOR)—were determined for each type. specific heat was also determined. results show panels’ densities greater than 700 kg/m3. Thickness swelling in 23% compared reference value control after incorporation. highest IB 1.30 MPa, which almost three times minimum required regulation standards. incorporation reduced Even though values obtained are sufficient comply set out ANSI standard A208.2 MOE 2072.4 MPa standards MOR 16.4 when microencapsulated used, increased more 100% over that developed fiberboards adequate
Language: Английский
Citations
2
European Journal of Wood and Wood Products, Journal Year: 2024, Volume and Issue: unknown
Published: Nov. 27, 2024
Abstract The study investigated the production process and properties of a new wood-based material called Bioblocks. This sustainable composite is made from medium-density-fibreboard (MDF) residues, citric acid either sorbitol or hexanediol. involves mixing in-water diluted chemicals with MDF residues curing mixture in laboratory oven to esterify wood components acid. A design experiment was used determine influence optima different factors, an optimised trial further properties. density distribution, compression strength, TS after 24 h immersion water according EN 317 Bioblocks were tested. first showed that mainly amount added impacts product’s achieved sufficient distribution average about 420 kg/m 3 , strength up 3.5 N/mm 2 2%. Therefore, are promising natural use waste substitute fossil, unsustainable materials.
Language: Английский
Citations
2
Buildings, Journal Year: 2023, Volume and Issue: 13(12), P. 2912 - 2912
Published: Nov. 22, 2023
Due to its recent emergence, there is a limited body of global market research available on CLT. Presently, the literature lacks comprehensive understanding regarding present state, varied uses, and future outlook CLT construction at level. The objective this article address knowledge gap by conducting semi-structured, in-depth interviews with manufacturer representatives around world, including Austria, Italy, Czech Republic, Sweden, Norway, Finland, Japan, Canada, Uruguay. Critical findings emphasized that (1) predominant mention was about insufficient experience within professionals; (2) clear need for heightened expertise training in domain underscored; (3) regarded as favorable choice efforts combat climate change; (4) deemed highly appropriate settings marked variable climatic conditions; (5) producers, particularly those comprehensive, vertically integrated operations encompassing entire processing cycle, remained unaffected rise raw material costs; (6) COVID-19 pandemic generally yielded positive impacts market; (7) primary application CLT, most manufacturers, residential institutional projects; (8) manufacturers noted expansive boundless opportunities market, especially considering crises potential avenues utilization This aims advance widespread adoption sector. It will achieve elucidating obstacles, possibilities, forthcoming prospects associated
Language: Английский
Citations
6
Inorganic Chemistry Communications, Journal Year: 2023, Volume and Issue: 159, P. 111865 - 111865
Published: Dec. 11, 2023
Language: Английский
Citations
6
Fibers, Journal Year: 2023, Volume and Issue: 11(12), P. 103 - 103
Published: Dec. 1, 2023
Recycling medium-density fiberboards (MDF) presents notable technological challenges, primarily due to the deteriorated properties of recycled wood fibers obtained from MDF waste. On other hand, enhanced valorization in manufacturing composites represents a viable approach for implementing principles circular bio-economy wood-based panel industry and lowering its carbon footprint. This research aimed investigate evaluate impact hydrothermal hydrolysis regime on physical mechanical panels (rMDF). The temperature was varied 121 °C (saturated steam pressure 0.2 MPa) 134 0.3 MPa), three durations, i.e., 30, 45, 60 min, were applied. A control panel, manufactured laboratory conditions industrial pulp, used perform comparative analyses. It observed that degradation rMDF occurred when increased °C. confirmed compared natural fibers. Markedly, no significant differences detected between density profiles boards fabricated pulp. As result study, it found has more effect than processing time. also established that, preliminary preparation into samples with dimensions similar those pulp chips, optimal is at 121° C time 30 min.
Language: Английский
Citations
5
Forests, Journal Year: 2023, Volume and Issue: 14(10), P. 2007 - 2007
Published: Oct. 6, 2023
In this study, some physical properties; the thickness swelling, water absorption, surface formaldehyde emission, and mechanical internal bond strength, bending modulus, soundness of MDF panels produced using recycled fibers obtained from waste fresh wood were investigated. Moreover, effect kraft lignin modification to on strength properties was determined. The results compared with fibers. Although replacing fiber adversely affected swelling/water absorption (water resistance) fiberboard, improved fiberboard. 10 wt% modified at 5 7.5 contents found be higher than that specimens 100 pine emission increased increasing content. slightly decreased Consequently, it can said utilization untreated while these (5 wt%) properties, resistance, MDF.
Language: Английский
Citations
2
Case Studies in Construction Materials, Journal Year: 2023, Volume and Issue: 20, P. e02733 - e02733
Published: Nov. 30, 2023
Melamine-coated medium density fibreboard (MDF-LAM) is widely used in the construction industry, furniture industry and other structural applications due to its easy processing, low cost, high strength dimensional stability. In this study, effects of MDF on environment throughout life cycle were determined by Life Cycle Assessment (LCA) method. For purpose, it presents results a research conducted evaluate environmental impacts identify hot spots MDF-LAM production Türkiye using LCA method, considering cradle-to-gate system. The process studied four subsystems: fibre preparation, board forming, finishing lamination (LAM). analysis MDF-LAM, detailed data obtained from company producing Türkiye. functional unit “1 m3 Türkiye”. estimated SimaPro 9.1 software Ecoinvent database v3.5 with CML-IA impact assessment Cumulative Energy Demand (CED) methods. Various categories considered analysis, such as global warming, acidification, eutrophication, water use, fossil fuels, human toxicity cumulative energy demand. show that fiber preparation stage main hotspot terms emissions. And shows followed step. It has been urea formaldehyde (UF) resin, which synthetic adhesive, largest share production. CED was evaluated another category. This evaluation result showed subsystem had higher than stages. addition, renewable biomass non-renewable most affected categories, while UF resin use electricity consumption important resources.
Language: Английский
Citations
2
Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown
Published: Feb. 20, 2024
Abstract The primary aim of this research is to develop a method for extracting fibers from the bark Daphne Gnidium shrub use in various fields, such as paper manufacturing and reinforcing composite materials with plant fibers. These have gained significant attention are increasingly utilized automotive, infrastructure, renewable material-based sectors. Following extraction using outlined study, we analyzed their morphological, chemical, physical properties samples biofibers, locally known Lazaz. characteristics (physical, morphological structure) revealed align numerous other studies, particularly terms density. We also consider economic environmental contexts local natural products Algeria, prompting us undertake comprehensive studies field identify new types useful plants that can contribute technological development.
Language: Английский
Citations
0
Materials, Journal Year: 2024, Volume and Issue: 17(14), P. 3405 - 3405
Published: July 10, 2024
Medium-density fiberboard (MDF) waste generation has increased steadily over the past decades, and therefore, investigation of novel methods to recycle this is very important. The potential repurposing MDF as an adsorbent for treatment Cd(II), Cu(II), Pb(II), Zn(II) ions in water was investigated using offcuts. highest adsorption single-metal ion solution systems observed Pb(II) ions. experimental data fit well with Freundlich isotherm pseudo-second-order kinetic models. Complexation electrostatic interactions were identified mechanisms. behavior multi-metal by introducing Cd(II) a competitive metal ion. presence reduced ions, yet preference remained. Regeneration studies performed 0.1 M HCl regeneration agent both systems. Even though significant amount adsorbed recovered, subsequent cycles. Based on these results, fines have be used economical remediation wastewater containing heavy
Language: Английский
Citations
0
Published: Aug. 6, 2024
Language: Английский
Citations
0