Can sponge really be soundproof?
Release time:
2023-07-25
First, it can be soundproof, but the sound insulation is very poor, and the sound absorption effect is good. Filling it into the cavity can solve the cavity resonance and absorb Senior high school low-frequency noise. Second, specific analysis and suggestions: sponge is a kind of foam (scientific name is polyurethane soft foam), but it has low density, easy water absorption, poor sound insulation effect and flammability; It is recommended that you use polyurethane insulation board (polyurethane hard foam), which is the same raw material as sponge, but the production process is different, and the raw materials used are also different.
1. It can be soundproof, but the sound insulation is very poor, and the sound absorption effect is good. Filling it into the cavity can solve the cavity resonance and absorb Senior high school low-frequency noise.
2, specific analysis and suggestions: sponge is a kind of foam (scientific name is polyurethane soft foam), but it has low density, easy water absorption, poor sound insulation effect and flammability; It is recommended that you use polyurethane insulation board (polyurethane hard foam), which is the same raw material as sponge, but the production process is different, and the raw materials used are also different. Is currently the best thermal insulation products (pay attention to the use of flame retardant), cars, tanks, aircraft and other high-end products use such products as thermal insulation materials.
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