Iranian Researcher Makes Acoustic Panels by Natural Hemp Fibers
“The use of natural fibers as porous materials for manufacturing sound absorbers has attracted much attention as a green or environmentally friendly process due to their special features like being non-toxic, biodegradable, light weight, low density, high electrical resistance, acceptable specific strength, anti-inflammatory impacts on skin and reasonable price,” said Ali Kazzemi Tabrizi, the researcher of the project and a PhD graduate of Wood and Paper Industry Sciences.
According to him, in this invention, the hemp plant (scientific name: Hibiscus Cannabinus) has been used to build an acoustic wall instead of using the fibers of forest trees.
“Acoustic absorbers made of these fibers, due to having networks of interconnected cavities, change the sound energy into thermal energy when the sound wave interacts with their walls, and in many studies, they show more favorable results in the area of acoustic absorption than synthetic fibers,” Kazzemi Tabrizi said.
Hemp acoustic panels made of natural hemp fibers capable of absorbing the sound. The majority of the sound energy breaks down in the cavities of the natural fibers and will be converted into heat.
As a result, the entire sound is no longer reflected, but only a fraction of it.
4155/v
