EVA foam is a good material to use for soundproofing. It is not particularly thick but it is dense and soft, which is why it reduces noise in a home gym. Professional gyms use these tiles over the flooring. EVA foam tiles are 24″ square in size and are available in several thicknesses. This article will discuss the advantages and disadvantages of EVA foam for soundproofing.
DFs/EVA sound absorption composites have strong fractal characteristics
We have demonstrated that DFs/EVA sound absorption materials have strong fractal properties. Fractal dimensions, which are closely related to the sound absorption properties of the composite, increase as the proportion of DFs increases and decreases as the proportion of EVA increases. This relation is almost linear, and reflects the relationship between the basic structural parameters and sound absorption performance.
To obtain fractal characteristics, we first calculated the fractal dimension of the composites using the least-square method, and then computed the slope of the straight line from the results. We then examined the relationship between fractal dimension and maximum sound-absorption coefficient using the composite samples 6# and 12#, which contained 0% and 100% waste-wool fibers, respectively. As shown in figure 17, the fractal dimension of DFs/EVA composites was in good agreement with the variation trend of the maximum sound-absorption coefficient.
The DFs/EVA sound-absorption composites studied in this study have high-frequency fractal properties. The DFs content of 60% was found to have the highest sound-absorption coefficient of 0.69, with high loftiness and low breaking strength. However, the excess DFs reduced the forming effects of the composites. These composites show strong fractal characteristics and can be used for soundproofing.
Acoustic foam is the best material for sound absorption
It is a known fact that foam absorbs sound better than other materials. However, foam may not be the best material to use in areas with a high level of echo. However, it is still an effective material for a number of applications, including small and medium-sized rooms. Its versatility makes it suitable for use in a variety of places, such as on walls, ceiling tiles, and floors.
The best material for sound absorption is acoustic foam, a relatively inexpensive and easily installed product. It comes in various colors and patterns and provides excellent sound absorption. It is usually available in panels with varying patterns, but this does not affect the material’s performance. Moreover, foam absorbs sound rather than blocking it. As a result, it can reduce noise in a variety of applications, including office environments.
DFs/EVA sound absorption composites are flexible
DFs/EVA sound absorption materials are characterized by their ability to absorb sounds in a wide frequency range. In fact, they are able to absorb more than six hundred Hz. The fractal dimension of DFs/EVA sound absorption composites was calculated using Matlab programming. The fractal dimension plays a crucial role in the sound absorption design of porous materials.
A novel DFs/EVA sound absorption material was fabricated using discarded duck feathers and EVA non-woven fabrics using a hot-pressing process. The effects of feather concentration, density, and thickness were studied. When the feather concentration was 300/100, the noise reduction coefficient was 0.54. Increasing the air cavity depth to thirty millimeters increased the sound absorption coefficient. The experimental results were compared with the theoretical predictions.
DFs/EVA sound absorption composites are dense
DFs/EVA sound absorption compounds are dense due to the morphological characteristics of feathers. Their barbs overlap with the joints of bone and EVA, thereby increasing the number of micropores and improving the absorption performance. The density of EVA hot melt adhesive resin was maximized by controlling the temperature during hot pressing. In addition, the density of feathers was increased due to the high density of these composites.
The DFs/EVA sound absorption-composite was prepared by hot-pressing method. For this process, the EVA powder and DFs were mixed in a predetermined proportion and heated to eight MPa for 20 min. The composites were then formed into discs, which had high sound absorption coefficients. Ph100 x 10 mm, 20 mm, 30 mm, and 40 mm test samples were prepared and characterized.
