| Polyester cotton by 100% polyester fiber as raw material, through hot pressing made of cocoon cottony, nearly two years in new products and new developed, to replace a new generation of new efficient sound absorption material of glass fiber, rock cotton, sponge and other harmful sound-absorbing material, the countries also advocated by the environmental protection, can be intimate contact with people (not to itch), harmless to the human body, sound absorption and strong environmental polyester fiber sound-absorbing cotton.Sound absorption principle: the polyester fiber sound-absorbing cotton is manufactured by special process, consisting of polyester superfine fibers, with three-dimensional porous network structure, average fiber fineness of 1-2 microns, the advantage that endow environmental polyester fiber sound-absorbing cotton more interconnected porosity, friction losses and so on, the sound energy is converted into heat and sound is effectively suppressed, also make environmental protection polyester fiber sound-absorbing cotton has sound-absorbing performance is better than the existing glass fiber cotton, wool and other materials.Product features:1, the high rate of absorption efficiency, polyester fiber sound-absorbing cotton is a porous material, its ***ection in Tongji University study of acoustics, the ***ection of 5cm thick product results for NRC (integrated noise reduction coefficient): 0.80, if the increase of density and thickness, there are a lot of room for its performance improvement;2, good sound insulation performance, typically 5cm thick cotton insulation can meet the requirements of ordinary occasions sound;3, flame retardant: polyester fiber sound-absorbing cotton tested in the national quality inspection center fire equipment, building materials combustion properties of B1 grade.4, excellent environmental performance, its ***ection at the national building materials testing center, to achieve the E1 level, the evaluation can be contact with human skin directly.5, co***ct structure, stabl |
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