Development of nitrile rubber/eucommia ulmoides gum composites for controllable dynamic damping and sound absorption performance

Lin, Songyi; Wang, Qi; Peng, Xiang; Yin, Dexian; Ding, Xiaodong; Liu, Li; Zhao, Xiuying

doi:10.1039/d2ra03597a

Cited by 13 publications

(3 citation statements)

References 33 publications

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“…The matrix of the traditional anechoic coating mostly comprises a rubber material, which has a low modulus and is prone to considerable deformation under high hydrostatic pressure. Hence, Su et al (2022) included Eucommia rubber into the viscoelastic matrix of the covering layer, which effectively improved the pressure resistance and sound absorption performance of the pure rubber matrix. Fu et al (2021a) added carbon nanotubes and graphene nanosheets to improve the pressure resistance and sound absorption performance of polydimethylsiloxane (PDMS).…”

Section: Design Of Acoustic Structures Resistant To Hydrostatic Pressurementioning

confidence: 99%

Review of Underwater Anechoic Coating Technology Under Hydrostatic Pressure

Jia,

Jin,

2024

J. Marine. Sci. Appl.

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The underwater anechoic coating technology, which considers pressure resistance and low-frequency broadband sound absorption, has become a research hotspot in underwater acoustics and has received wide attention to address the increasingly advanced low-frequency sonar detection technology and adapt to the working environment of underwater vehicles in deep submergence. One the one hand, controlling low-frequency sound waves in water is more challenging than in air. On the other hand, in addition to initiating structural deformation, hydrostatic pressure also changes material parameters, both of which have a major effect on the sound absorption performance of the anechoic coating. Therefore, resolving the pressure resistance and acoustic performance of underwater acoustic coatings is difficult. Particularly, a bottleneck problem that must be addressed in this field is the acoustic structure design with low-frequency broadband sound absorption under high hydrostatic pressure. Based on the influence of hydrostatic pressure on underwater anechoic coatings, the research status of underwater acoustic structures under hydrostatic pressure from the aspects of sound absorption mechanisms, analysis methods, and structural designs is reviewed in this paper. Finally, the challenges and research trends encountered by underwater anechoic coating technology under hydrostatic pressure are summarized, providing a reference for the design and research of low-frequency broadband anechoic coating.

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Section: Design Of Acoustic Structures Resistant To Hydrostatic Pressurementioning

confidence: 99%

Review of Underwater Anechoic Coating Technology Under Hydrostatic Pressure

Jia,

Jin,

2024

J. Marine. Sci. Appl.

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“…Not only that, mechanical vibration makes the accuracy and life of the machine also suffer [3]. Soundabsorbing materials have wide range of application prospects, and sound-absorbing materials have excellent damping properties [4].…”

Section: Introductionmentioning

confidence: 99%

A novel hydrophobic butyl rubber damping composites modified with environmentally friendly bio-based PF/DBA via constructing three-dimensional network

Hu,

Chen,

Meng

et al. 2024

Preprint

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It is of interest to develop wide-temperature domain damped hydrophobic materials. In this paper, we designed incorporating bio-based phenolic resin into the IIR matrix and introducing dibenzyl fork acetone (DBA) into the main chain structure with sodium hydroxide activation to construct three-dimensional network. The added bio-based phenolic resin has reticulated structure blended with butyl rubber, combined with sodium hydride activation-modified IIR. The results show that sodium hydride activated modification of DBA is introduced into the main chain structure of IIR by infrared and 1H NMR analysis. The material hydrophobic is realized by the introduction of DBA with static water contact angle of 103.5°. The addition of 10phr lignin-based phenolic resin (LPF) is compatible with IIR, and the torque can reach 7.0N-m. The tensile elongation of the modified butyl rubber composite can reach 2400% with tensile strength up to 11.43 MPa, while the damping factor can reach 0.37 even at 70°C. The thermal stability of the composites is enhanced with mass retention rate of 28%. The bio-based PF/NaH activation-modified butyl rubber damping material has potential applications in damping hydrophobicity with wide temperature range.

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“…Currently, in order to enhance the understanding of the influence of high hydrostatic pressure on the polymer, a variety of theoretical calculations and experimental studies have been studied [5][6][7][8][9] . Liu et al proposed a modified Williams -Lendel -Ferry ( WLF ) equation under pressure for studying the basic theory of the damping properties of rubber [5] .…”

Section: Introductionmentioning

confidence: 99%

Acoustic performance of styrene butadiene rubber with different styrene contents

Wang,

Shan,

Zhang

et al. 2023

Ninth International Conference on Mechanical Engineering, Materials, and Automation Technology (MMEAT 2023)

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Styrene butadiene rubber ( SBR ) is widely utilized in the field of vibration and noise reduction, and has shown its potertial in sound absorption under water pressure. For this study, SBR samples with 10% to 25% styrene content were prepared. The effect of styrene content in SBR on sound absorption performance under hydrostatic pressure was investigated. By characterizing the impact of hydrostatic pressure on the dynamic mechanical properties of SBR, the reasons for the subpar sound absorption performance of SBR under high hydrostatic pressure were analyzed. The results show that the sound absorption peak of SBR relocated to high frequency with increase in styrene content at atmospheric pressure. And due to the decrease of loss factor and the increase of stored energy modulus of SBR under high hydrostatic pressure, its sound absorption performance decreases under high hydrostatic pressure.

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Development of nitrile rubber/eucommia ulmoides gum composites for controllable dynamic damping and sound absorption performance

Abstract: Nitrile rubber (NBR)/Eucommia ulmoides gum (EUG) composites were successfully fabricated with controllable dynamic damping and sound absorption performances, owing to the changeable EUG crystal number in different NBR/EUG composites.

Cited by 13 publications

References 33 publications

Review of Underwater Anechoic Coating Technology Under Hydrostatic Pressure

Review of Underwater Anechoic Coating Technology Under Hydrostatic Pressure

A novel hydrophobic butyl rubber damping composites modified with environmentally friendly bio-based PF/DBA via constructing three-dimensional network

Acoustic performance of styrene butadiene rubber with different styrene contents

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