Sound-absorbing fabric based on triboelectrification by vibration, preparation method thereof and application

By introducing yarn vibration and porous structures into the sound-absorbing fabric, the double conversion of acoustic energy is achieved, and the problems of insufficient breathability and frequency range of existing sound-absorbing fabrics are solved, and high-efficiency sound-absorbing fabrics suitable for home textiles are prepared.

CN117005084BActive Publication Date: 2025-08-05YUYUE HOME TEXTILE CO LTD
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Patent Information

Application Number
CN202310984604.3
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-08-07
Publication Date
2025-08-05
Estimated Expiration
2043-08-07

AI Technical Summary

Technical Problem

The existing sound-absorbing fabrics have problems such as insufficient breathability, complex preparation process, narrow sound-absorbing frequency range, and the product is not suitable for home textile applications.

Method used

The dual energy consumption mechanism based on vibration to make the material contact and electricity are adopted, and charge transfer and porous structure sound absorption are generated through yarn vibration. Combined with the cantilever beam structure design, the electric and thermal energy conversion of acoustic energy is realized.

Benefits of technology

It improves the sound absorption efficiency of sound-absorbing fabrics, expands the sound absorption frequency range, especially the noise reduction effect of low-frequency noise, and keeps the fabrics light, soft, breathable and comfortable, suitable for home textiles.

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Abstract

The present invention discloses a sound-absorbing fabric that causes contact electrification of materials based on vibration, as well as a preparation method and application thereof, belonging to the field of sound-absorbing materials. The sound-absorbing fabric provided by the present invention comprises an upper fleece fabric and a lower fleece fabric. The upper fleece fabric and the lower fleece fabric contain vibration unit layers with different electrostatic sequences. The different vibration unit layers are electrified by contact separation, resulting in charge transfer, and converting sound energy into electrical energy; at the same time, the porous structure of the fabric itself is utilized to convert sound energy into heat energy, thereby achieving a sound absorption effect. Based on the principle of porous sound absorption, the present invention provides the fabric with an additional way to consume sound energy through contact electrification, thereby making the fabric more efficient in sound absorption and being able to selectively reduce noise of specific frequencies, especially low-frequency noise. The resulting fabric is light, thin, and breathable. The sound-absorbing fabric produced by the present invention can be used to prepare home textile fabrics with sound absorption and noise reduction effects.
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