The increase in population and the development of industries make it more likely for people to be in noisy environments. Insulating different surfaces of structural walls and equipments is one way to prevent energy loss and thus reduce costs. On the other hand, it is important to prevent sound transmission in order to avoid disturbances by sounds created in the upper or lower rooms of buildings and industrial structures, as well as ships, trains and cars. In addition to using a high-density concrete ceiling or wall with insulators such as fiberglass or using rubber stabilizers to reduce thermal and sound losses, the use of insulating coatings is a novel approach. Another way to reduce noise and acoustic losses is to use sound-absorbing material on the floor and body of buildings. One group of these sound absorbing materials are nanostructured ceramic.

Application

• Floor and body of residential and office buildings
• Recording studios, theater halls, meeting halls, cinemas and exhibitions
• Car, helicopter, plane, train, ship

Advantager of using nanotechnology
 

With the addition of nanoparticles, the absorption capacity of sound at intermediate frequencies has improved dramatically. The results show that the addition of silica-gel to non-woven polyester textile modifies the acoustic behavior in the mid-frequency range and can be used as an acoustic absorber on the side walls of various structures in acoustic designs. It should be noted that the range of 900 to 1800 Hz covers most of the sounds around us.