Damping behavior and acoustic performance of polyurethane/lead zirconate titanate ceramic composites

Zhang, C.H.; Hu, Zhen; Gao, Ge; Zhao, Shiyuan; Huang, Yudong

doi:10.1016/j.matdes.2012.10.015

Cited by 50 publications

(26 citation statements)

References 19 publications

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“…. As a result, the diameter of the microsphere can increase by several dozen times after the expansion process . Since the pore expansion during foaming process is not such integrated with the curing reaction, employing expandable microsphere as the foaming agent provides wide latitude in matrix choices and great flexibility of formulation .…”

Section: Introductionmentioning

confidence: 99%

Acoustically and thermally insulating epoxy foams prepared by non‐traditional expandable microspheres

Bai

Zhang

Bao³

2018

Polymer Engineering & Sci

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Herein, the acoustically and thermally insulating epoxy foams were prepared using non‐traditional expandable microspheres. The effect of foaming temperature and microsphere content on the morphology, the mechanical strength, the thermal insulation and acoustical properties of the epoxy foams was investigated in detail. It can be found that the closed pores can be partially opened by adjusting the preparation parameters, which is also accompanied by obvious changes in acoustic and thermal insulation properties. By giving high‐content expandable microspheres above 2 wt%, the epoxy foams exhibit highly thermal insulation, and meanwhile achieving an acceptable mechanical property. The results convince us that such light‐weight epoxy foams will outshine as the promising structural, soundproof and heat‐insulated material in many multifunctional systems, such as buildings, vehicles and aircrafts. POLYM. ENG. SCI., 59:799–806, 2019. © 2018 Society of Plastics Engineers

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Section: Introductionmentioning

confidence: 99%

Acoustically and thermally insulating epoxy foams prepared by non‐traditional expandable microspheres

Bai

Zhang

Bao³

2018

Polymer Engineering & Sci

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“…Thus, a reasonable solution to improve the actuated strain at a low electric field is to increase k and decrease Y of DEs . One effective method to improve k of DEs is to introduce high‐ k ceramics into the elastomer matrix without significant increase of the elastic modulus . Therefore, in order to get a large ratio of dielectric constant to elastic modulus ( k/ Y), it is important to balance these two incompatible key properties through material design.…”

Section: Introductionmentioning

confidence: 99%

Property reinforcement of silicone dielectric elastomers filled with self‐prepared calcium copper titanate particles

Wang

Zhang

Duan

et al. 2015

J of Applied Polymer Sci

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In this article, submicron and micron calcium copper titanate (CCTO) crystallites with different morphologies were successfully designed and prepared by directly thermal treatment method and molten salt method, respectively. Then, the silicone elastomer filled with self-prepared CCTO particles had high dieletric constant, low dielectric loss, and actuated strain which was greatly improved at low electric field. The dieletric constant at 50 Hz obviously increased from 2.15 for pure silicone elastomer to 4.37 and 4.18 for the submicron and micron CCTO/poly (dimethyl siloxane) (PDMS) composites. The dielectric loss of the composites retained at a low value (less than 0.06). Meanwhile, the elastic modulus of CCTO/PDMS composites was increased slightly only with a good flexibility. Compared to pure silicone elastomer (2.25%), the submicron and micron CCTO/PDMS composites with 2 wt % content exhibited a greater strain of 7.69% and 9.83% at a low electric field of 5 V/lm. V C 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 42613.

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“…1 One of the key solutions for reducing noise pollution is to improve sound absorption efficiency by increasing damping capacity and optimizing pore structure of materials such as nanocomposites. [1][2][3] Polyurethanes are one of the practical polymers that have extensive utilities in foams, coating, adhesives, elastomers, composites, biomedical materials, etc. [3][4][5][6] Polyurethane foams are produced as a result of the reaction between two main parts diisocyanate and polyol.…”

Section: Introductionmentioning

confidence: 99%

The role of hollow silica nanospheres and rigid silica nanoparticles on acoustic wave absorption of flexible polyurethane foam nanocomposites

Zangiabadi

Hadianfard

2019

Journal of Cellular Plastics

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Pure polyurethane foam and nanocomposite foam are used to absorb sound. In this study, hollow silica nanospheres and rigid silica nanoparticles were added to the polyurethane matrix and their sound absorption properties were investigated by impedance tube and compared with pure polyurethane foam. Reinforcement phase influences on the morphology of the matrix were studied by scanning electron microscopy. Due to greater effects of the rigid silica nanoparticles on the morphology of the matrix, it was expected to increase the sound absorption coefficient of the rigid silica nanoparticles/polyurethane, more than hollow silica nanospheres/polyurethane, but the results show that the hollow silica nanospheres increased absorption coefficient of the composite more efficiently. The crust of hollow silica nanospheres increases the number of boundaries in a sound wave, and the air gap inside them cause the sound wave to damp. So the intrinsic property of the hollow silica nanospheres is more effective than the matrix morphology. Thus, by the same content of reinforcement in the matrix, hollow silica nanosphere/polyurethane sample with sound absorption coefficient of 0.87 for a thickness of 9 cm has the highest sound absorption coefficient compared to the rigid silica nanoparticles/polyurethane sample and pure polyurethane foam. In pure and nanocomposite samples, sound absorption coefficient increased by increasing the thickness of samples.

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Damping behavior and acoustic performance of polyurethane/lead zirconate titanate ceramic composites

Cited by 50 publications

References 19 publications

Acoustically and thermally insulating epoxy foams prepared by non‐traditional expandable microspheres

Acoustically and thermally insulating epoxy foams prepared by non‐traditional expandable microspheres

Property reinforcement of silicone dielectric elastomers filled with self‐prepared calcium copper titanate particles

The role of hollow silica nanospheres and rigid silica nanoparticles on acoustic wave absorption of flexible polyurethane foam nanocomposites

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