Abstract
As absorption of sound of lower frequencies is quite problematic with fibrous material made up of coarser fibers, development of highly efficient sound absorption material is called for. This is why this work deals with the development of new high sound absorption material. To absorb the low frequencies, especially the structures based on resonance principle of nanofibrous layers are used, when through resonance of some elements the acoustic energy is transferred into thermal energy. The goal of the invention is achieved by a sound absorbing means which contains resonance membrane formed by a layer of polymeric nanofibers, which is attached to a frame. For production of nanofibrous membranes, the cord electrospinning was used. The resonance membrane was then, upon impact of sound waves of low frequency, brought into forced vibrations, whereby the kinetic energy of the membrane was converted into thermal energy by friction of individual nanofibers, by the friction of the membrane with ambient air and possibly with other layers of material arranged in its proximity, and some of the energy was also transmitted to the frame, through which the vibrations of the resonance membrane were damped. The density and shape of the mesh of frame formations determine the resonance frequency of the acoustic means. The goal of the invention is therefore to eliminate or at least reduce the disadvantages of the present state of the art and to propose sound absorbing means that would be capable of absorbing, with good results sounds in as broadest frequency range as possible. Here, we also discussed some patents relevant to the topic.
Keywords: Absorption, acoustics, electrostatic, frame, frequency, grid, membrane, mesh, nanofibres, panel, resonance, sound, spinning, structure, vibration.
Graphical Abstract
Call for Papers in Thematic Issues
Advances in Vanadium and Titanium Resources for High-performance Materials via Nanostructuring and Nanoengineering (updated BMS-NANOTEC-2023-HT-31)
Vanadium and titanium-based materials are ideal candidates for structural and functional materials in aerospace, biomedical engineering, optics, catalysis, energy storage and conversion etc. Vanadium/titanium-based alloys, compounds and materials have a large family with different chemical compositions, dimensions, structures/morphologies, and chemical/physical/mechanical properties, which provides huge opportunities for the development of emerging ...read more
Green Nanotechnology and Nanomaterials for a Sustainable Environment
Green nanotechnology (GN) might wind up being the most efficient platform for achieving the goals of the 2030 Agenda. The goal of GN is to create goods and procedures that are secure, energy-efficient, waste-free, and emit fewer greenhouse gases. Such goods and procedures use renewable resources, and/or their environmental impact ...read more
NANOSTRUCTURED NEUROMORPHIC DEVICES: TOWARDS IN MATERIA COMPUTING
The efforts pursued in the last decade to build up brain-inspired systems with electronic hardware solutions to solve complex data processing tasks, have leaded to the development of a new generation of devices, as memristor crossbar arrays, and their different applications became more and more reliable. One of the basic ...read more
Related Books
Nanoscale Field Effect Transistors: Emerging Applications
Nanoelectronics Devices: Design, Materials, and Applications Part II
Nanoelectronics Devices: Design, Materials, and Applications (Part I)
Role of Nanotechnology in Cancer Therapy
Synthesis and Applications of Semiconductor Nanostructures
Pathways to Green Nanomaterials: Plants as Raw Materials, Reducing Agents and Hosts
Applications of Nanomaterials in Medical Procedures and Treatments
Synthesis of Nanomaterials
Nanobiotechnology: Principles and Applications
Bio-Inspired Nanotechnology
27
2
1
1