“…Hence, there is lower noise absorption. Previous studies have reported that the functional groups in MAPP react well with the hydroxyl groups on wood chips and lead to lower porosity and hence lower sound absorption [ 19 , 20 ]. Fig.…”
Wood chips were used in their original form without any physical or chemical treatment as reinforcement for polypropylene to develop composites as potential replacement for medium density fiber (MDF) boards, gypsum based false ceiling and other building materials. Wood chips are generated as byproducts and have limited and low value applications. Composites with up to 90% wood chips were developed through compression molding and the mechanical, acoustic and thermal properties were studied. Further, maleated polypropylene (MAPP) was used (1–5% w/w based on woodchips used) as compatibilizer and changes in properties were recorded. Up to 300% increase in tensile properties were observed when 5% compatibilizer was present. Tensile properties of the composites containing MAPP were higher than that of commercially available medium density plywood boards and also gypsum based ceiling tiles. Addition of MAPP did not change thermal conductivity but decreased sound absorption. Wood chips reinforced PP composites containing MAPP show exceedingly high properties and could replace particle, fiber boards and other building materials in current use. Utilizing the wood waste also results in environmentally friendly, sustainable and low cost building materials.
Graphical Abstract
“…Hence, there is lower noise absorption. Previous studies have reported that the functional groups in MAPP react well with the hydroxyl groups on wood chips and lead to lower porosity and hence lower sound absorption [ 19 , 20 ]. Fig.…”
Wood chips were used in their original form without any physical or chemical treatment as reinforcement for polypropylene to develop composites as potential replacement for medium density fiber (MDF) boards, gypsum based false ceiling and other building materials. Wood chips are generated as byproducts and have limited and low value applications. Composites with up to 90% wood chips were developed through compression molding and the mechanical, acoustic and thermal properties were studied. Further, maleated polypropylene (MAPP) was used (1–5% w/w based on woodchips used) as compatibilizer and changes in properties were recorded. Up to 300% increase in tensile properties were observed when 5% compatibilizer was present. Tensile properties of the composites containing MAPP were higher than that of commercially available medium density plywood boards and also gypsum based ceiling tiles. Addition of MAPP did not change thermal conductivity but decreased sound absorption. Wood chips reinforced PP composites containing MAPP show exceedingly high properties and could replace particle, fiber boards and other building materials in current use. Utilizing the wood waste also results in environmentally friendly, sustainable and low cost building materials.
Graphical Abstract
“…Composite materials can be developed based on specific improvements in any or all of thermal, mechanical, and microstructural properties [25]. For example, gypsum-based composites are widely used for the production of innovative wall body materials.…”
Section: Fig 2 Ceiling Boardsmentioning
confidence: 99%
“…Organizations around the globe have developed and created numerous production equipment successfully, using new building materials that makeup gypsum with wood chairs. This type of composition shows low density, high heat/sound insulation, and increased strength [25,26].…”
The pioneers of the industrial revolution, and their successors, left the world’s ecosystem in a devastating state. Global warming became the consequence of activities in the industry that led to climate change, the depletion of the ozone layer, and pollution of the ecosystem. For decades now, concerned researchers have been frantically investigating methods and procedures that can help conserve the ecosystem's left to attain sustainability. The construction industry also poses its challenge as novel solutions to construct sustainable, less hazardous products to the environment and improve human health are diligently investigated and identified yearly. This paper discusses specific steps of this nature and explains how environmentally-friendly construction methods and materials produce ceiling boards.
“…The manufacturing method of these sandwich structures also varies from gluing the elements together [14], using a vacuum-assisted resin transfer method [10,18], gluing and vacuuming [11,13], gluing and pressing [19], and hot pressing [12], to using the resin employed for the core [15,17] or using the resin employed for the skin and pressing [16].In the field of construction materials, the sandwich or multi-layered structures are commonly used as wall panels. Brenci et al [21] designed several multi-layered wall structures consisting of different core materials, such as wood shavings, recycled acrylonitrile butadiene styrene (ABS), and rock wool as well as different face plates such as oriented strand board and gypsum board. Buratti et al [22] studied a multi-layered wall panel consisting of a straw core and an air gap fixed between wooden plates, with the assembly being plastered on both faces.…”
mentioning
confidence: 99%
“…In the field of construction materials, the sandwich or multi-layered structures are commonly used as wall panels. Brenci et al [21] designed several multi-layered wall structures consisting of different core materials, such as wood shavings, recycled acrylonitrile butadiene styrene (ABS), and rock wool as well as different face plates such as oriented strand board and gypsum board. Buratti et al [22] studied a multi-layered wall panel consisting of a straw core and an air gap fixed between wooden plates, with the assembly being plastered on both faces.…”
The aim of this paper is to propose a novel sandwich panel, which would be suitable for sound absorption and airborne sound insulation, used as applied cladding or independent lightweight partition wall. As far as the authors are concerned, this is the first sheep wool-based sandwich panel using only natural materials. The structure was prepared using hydrated lime-based composite face sheets and a sheep wool-based core. Several parameters of the sandwich panel were determined, including sound absorption coefficient, airborne sound insulation, thermal conductivity, thermal resistance, compressive strength, and bending strength, respectively. The results indicate that the maximum sound absorption value of 0.903 was obtained at the frequency of 524 Hz in the case of the unperforated sample, 0.822 at 536 Hz in the case of the sample with 10% perforations, 0.780 at 3036 Hz in the case of the sample with 20% perforations, and 0.853 at 3200 Hz in the case of the sample with 30% perforations. The registered airborne sound insulation index of the panel was 38 dB. Based on the obtained data, it can be concluded that the studied panel recorded comparable values with other synthetic noise control solutions, which are suitable as applied cladding or an independent lightweight partition wall, with good acoustic properties.
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