A Study of Energy Saving in Building through Thermal Insulation with Plywood Inserted Honeycomb Sandwich Panels

Reengwaree, Amnoiy; Premanond, Varunee; Torsakul, Sirichai

doi:10.1016/j.egypro.2013.06.835

Cited by 10 publications

(3 citation statements)

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“…At the same condition of acid catalyst and solvent, FA concentration no longer had a noticeable effect on the pH of the impregnation solution when reaching 30 wt.%. The transmittance coefficient of the specimen could be obtained by Equation (7).…”

Section: Wpg and Admentioning

confidence: 99%

“…The cork layer can effectively buffer when pressed by an external load, thereby increasing the internal friction loss and improving the sound insulation. However, this type of plywood does not have good mechanical properties [7,8]. Considering the excellent mechanical strength of plywood made of eucalyptus [9], [10] prepared composite plywood for compartment floor with poplar veneer, eucalyptus veneer, and carbon fiber fabric.…”

Section: Introductionmentioning

confidence: 99%

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Sound Insulation Performance of Furfuryl Alcohol-Modified Poplar Veneer Used in Functional Plywood

2022

Materials

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Plywood has poor sound insulation due to its insufficient areal density, which cannot satisfy the demands of an indoor acoustic environment. This report proposed to use furfuryl alcohol to impregnate poplar veneer as a raw material for plywood and explored the sound insulation potential of furfuryl alcohol-modified poplar veneer. The effect of different formulations on the sound insulation performance of modified veneers was discussed, such as furfuryl alcohol concentrations, catalyst categories, and solvent categories. The weight percent gain (WPG) and areal density (AD) were used to evaluate the impregnation effectiveness of furfuryl alcohol modification. The sound insulation was measured by the impedance tube method. The results showed that the WPG of the furfuryl alcohol-modified veneers was evident, and the AD was effectively improved. Furthermore, the average sound insulation of furfuryl alcohol-modified poplar veneer was 25.68~40.10 dB, which increased by 10.8~19.1% compared with that of unmodified veneer. The modified veneer with 50% furfuryl alcohol concentration, taking isopropanol as a solvent, and maleic anhydride as a catalyst, had the optimal sound insulation performance. At the same time, the cell microstructure and chemical components were characterized by scanning electron microscope (SEM), Fourier-transform infrared spectroscopy (FTIR), and Brunauer–Emmett–Teller (BET) theory to explain the sound insulation mechanism further. The results showed that the distortion of cell walls was improved, suggesting a change in the mechanical properties of the cell wall. At the same time, more micropores formed since the filling of furfuryl alcohol resin, yielding a tortuous propagation pathway, so the sound insulation performance improved. Finally, it demonstrated the potential of furfuryl alcohol-modified poplar veneer as raw material to prepare plywood with excellent sound insulation.

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Section: Wpg and Admentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Sound Insulation Performance of Furfuryl Alcohol-Modified Poplar Veneer Used in Functional Plywood

2022

Materials

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“…Based on research done by Deshpande et al, corrugated cores tested in longitudinal direction give shear strengths which are comparable with square honeycomb and slightly greater than the results from diamond cores and other traditional foam cores. According to [4], among all the sandwich panel systems, the corrugated core sandwich is one of the most promising alternatives which plays increasingly important role in civil engineering areas especially in reducing the structure to have light weight with the ability to cater compression load or punching shear force.…”

Section: Design and Theories Of Sandwich Panelmentioning

confidence: 99%