Multi-Objective Optimization of Acoustic Performances of Polyurethane Foam Composites

Chen, Shuming; Zhu, Wenbo; Cheng, Yabing

doi:10.3390/polym10070788

Cited by 30 publications

(22 citation statements)

References 28 publications

(27 reference statements)

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“…12 The average absorption coefficient ( α ) is expressed by the average value of the absorption coefficient of some special frequency points. 34 It can be calculated by: isolate sound. It is calculated by the acoustic pressure at the entrance and exit.…”

Section: Measurement Methodsmentioning

confidence: 99%

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Preparation and acoustic properties of a tung oleic acid‐based polyurethane foam and its stratified structure

Chen

2020

Polymers for Advanced Techs

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Bio-based polyurethane foam, a new green environmental material, has attracted more and more attention of people. In this study, the tung oleic acid-based polyurethane (TOPUF) had been prepared using one-step method. Characterization of the polyurethane foams were carried out by SEM and Fourier transform infrared. The cell morphology, acoustic, and mechanical performance of TOPUF with different contents of tung oleic acid-based polyols (TOAP) were studied and compared with that of a pure petroleum-based polyurethane foam. In addition, the effects of thickness ratio of layers on the acoustic performance of the double-layer composite polyurethane foam (DPUF) were also studied by means of theoretical model and experiment. The results illustrate that TOPUF shows a high absorption performance in the frequency range from 100 to 500 Hz and sound insulation performance in the range from 100 to 6300 Hz. The average sound absorption coefficient of TOPUF is 0.505, and the average transmission loss is 18.818 dB in this case. Furthermore, the average sound absorption coefficient and average transmission loss of DPUFs are 0.545 and 14.528 dB using multilayer structure. Overall, TOPUF has excellent acoustic properties and prodigious application prospects.

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Section: Measurement Methodsmentioning

confidence: 99%

“…The average value of the transmission loss (TL ) is calculated by 1/3 octave band at the range of 100 to 6300 Hz. 34…”

Section: Measurement Methodsmentioning

confidence: 99%

Preparation and acoustic properties of a tung oleic acid‐based polyurethane foam and its stratified structure

Chen

2020

Polymers for Advanced Techs

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“…In modern vehicles, an average of 20 kg of all types of PUR can be found in a single car [ 26 , 27 ]. PUR can be used for the exterior and interior, especially for the elimination of vehicle noise [ 28 ] and with the use of additives, flame resistance can be improved [ 29 ]. Linul et al investigated the influence of aluminum micro-fibers (AMs) on the compression properties and energy absorption of PUR.…”

Section: Introductionmentioning

confidence: 99%

Influence of Polymer Composites and Memory Foam on Energy Absorption in Vehicle Application

et al. 2020

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The automotive industry is one of the biggest consumers of polymer composites. Aside from good mechanical properties, polymer composites have low mass, which positively affects the overall vehicle weight reduction and improves energy efficiency. Although polymer composites are used in various vehicle components, this paper focused on the application in vehicle bumper production. Two different composite plates with hybrid fiber layup were made; the first plate with a combination of glass and carbon fibers and the second with carbon and aramid. For comparison, and as a cheaper variant, a third plate was made only with glass fibers. In the first two plates, epoxy resin was used as the matrix, while in the third plate, polyester resin was used. Polyurethane memory foams of different densities (60, 80, 100 kg/m3) and thicknesses (10, 15, 20 mm) were used as impact force energy absorbers. With the factorial design of experiments, it was found that the thickness of the memory foam was the main influence factor. Without the use of memory foam, the hybrid composite, made of glass and carbon fibers, showed the highest energy absorption, while with the use of foam, the highest energy absorption was achieved with the glass fiber composite. Without the memory foam, the impact force measured on the glass/carbon hybrid composite was 9319.11 ± 93.18 N. Minimum impact force to the amount of 5143.19 ± 237.65 N was measured when the glass fiber composite plate was combined with the memory foam. When using memory foam, the impact force was reduced by 30–48%, depending on the type of composite used.

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“…The performance and application of novel sound absorption and noise reduction materials have become the development goals of all countries in the world. Compared with traditional metal materials [1], polymer materials [2,3,4,5,6] especially polymer foams [7,8,9,10,11,12], have great advantages in the field of sound absorption due to their light weight and good processability. Sound waves can be greatly absorbed during propagation in foam structures through the internal reflection, refraction and dissipation of the sound waves in a cellular structure.…”

Section: Introductionmentioning

confidence: 99%

Extrusion Foaming of Lightweight Polystyrene Composite Foams with Controllable Cellular Structure for Sound Absorption Application

et al. 2019

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Polymer foams are promising for sound absorption applications. In order to process an industrial product, a series of polystyrene (PS) composite foams were prepared by continuous extrusion foaming assisted by supercritical CO2. Because the cell size and cell density were the key to determine the sound absorption coefficient at normal incidence, the bio-resource lignin was employed for the first time to control the cellular structure on basis of hetero-nucleation effect. The sound absorption range of the PS/lignin composite foams was corresponding to the cellular structure and lignin content. As a result, the maximum sound absorption coefficient at normal incidence was higher than 0.90. For a comparison, multiwall carbon nanotube (MWCNT) and micro graphite (mGr) particles were also used as the nucleation agent during the foaming process, respectively, which were more effective on the hetero-nucleation effect. The mechanical property and thermal stability of various foams were measured as well. Lignin showed a fire retardant effect in PS composite foam.

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Multi-Objective Optimization of Acoustic Performances of Polyurethane Foam Composites

Cited by 30 publications

References 28 publications

Preparation and acoustic properties of a tung oleic acid‐based polyurethane foam and its stratified structure

Preparation and acoustic properties of a tung oleic acid‐based polyurethane foam and its stratified structure

Influence of Polymer Composites and Memory Foam on Energy Absorption in Vehicle Application

Extrusion Foaming of Lightweight Polystyrene Composite Foams with Controllable Cellular Structure for Sound Absorption Application

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