Decorative gypsum board partition with what the best sound insulation cotton? Mineral rock wool and glass wool.
Sound insulation wall from the sound effects of rock wool and glass wool composite use of the best, rockwool isolated low audio, glass fiber cotton isolated high frequency, but rock wool is better, the bulk density of 80k or more. Construction is difficult, are almost, rock wool construction workers more uncomfortable, the price is still cheap glass wool
Sound insulation effect is good, the construction is simple glass wool, the price thing is the latter, but no test report, you use, no quality assurance.
Rock wool and glass wool on the overall performance of almost, are brittle fiber composition, need to get a better sound volume, the need for higher density materials, usually 80KG per cubic meter of use more. The price range is 40-60 yuan per square meter. This material can cause skin irritation, dust can cause respiratory irritation. So the construction should pay attention to the construction workers physical protection, the material must be completely closed to the wall inside. If it is a hole in the ceiling must not use glass wool.
Construction methods are the same, directly on the keel space, outside the sealing plate.
Currently on the market the best sound insulation is said to be gradient sound-absorbing cotton, as well as high barrier sound felt. The price is relatively high, the price range of 55-80 yuan per square meter. The advantage of its products is more environmentally friendly, the first construction will not cause skin itching. There is no exhaust gas. Not powdery. Sound-absorbing effect is reflected in the full-frequency silence, the low-frequency, intermediate frequency, high-frequency sound has a good reduction effect. High-barrier sound-felt body is now its high damping performance, attached to the back of the sheet can effectively inhibit the resonance generated by the sound transmission. Usually more upscale, or more respected official places.
