What is the best sound proof cotton in the decorative plaster board partition wall? Mineral wool rock and glass wool.
Rock wool and glass wool on the overall performance of almost the same, are brittle fiber composition, you need to get a good sound insulation, you need to use high-density materials, usually 80KG per cubic meter of the use of more. The price range is 40-60 yuan per square meter. This material can cause skin allergies and dust can cause respiratory allergies. Therefore, construction should pay attention to the construction personnel physical protection, materials must be completely sealed to the wall inside. If it is a ceiling with holes, you must not use glass wool.
Glass cotton is much better, mineral wool has a matter of release, that is, asbestos material, you Baidu once knew the harm of asbestos.Armstrong is such failures, of course they make a lot of money in China.
At present, the market is the best sound effect is said to be gradient sound-absorbing cotton, as well as high barrier sound felt. The price is relatively high, the price range is 55-80 yuan per square meter. The advantages of its products are more environmentally friendly, first of all, the construction will not cause skin itching. No emissions. It won't be pulverized. The sound absorption effect is reflected in the full frequency silencing, and has a good reduction effect on low frequency, intermediate frequency and high frequency sound. High barrier acoustic felt is reflected in its high damping performance. It can effectively restrain the sound propagation caused by resonance when it is attached to the thin plate. Usually relatively high-end, or official sites are more respected.
