In the selection of sound insulation materials, rubber-plastic sound insulation cotton and polyester fiber sound insulation cotton are both products that have attracted much attention. Although they both have sound insulation functions, there are obvious differences in materials, performance, application scenarios, etc.
Material characteristics: Rubber-plastic sound insulation cotton is made of rubber and plastic foamed by a special process, and has a large number of tiny and independent closed-cell structures inside. This structure gives it excellent elasticity and flexibility, and its texture is relatively tight. Polyester fiber sound insulation cotton is made of polyester fiber as the main raw material and processed by hot pressing and other processes. Its fibers are intertwined to form a loose and porous structure with a relatively soft texture.
Sound insulation performance: The closed-cell structure of rubber-plastic sound insulation cotton makes it have a strong ability to block sound, especially for medium and low-frequency sounds. It has a good sound insulation effect. When the sound propagates to the rubber-plastic sound insulation cotton, the closed-cell structure will hinder the propagation of sound waves, causing its energy to be continuously lost. Polyester fiber sound insulation cotton is better at absorbing high-frequency sounds due to its porous structure. After high-frequency sound waves enter the fiber pores, they rub against the fibers and convert sound energy into heat energy for consumption. In practical applications, if the main purpose is to isolate low-frequency noise such as external traffic, rubber-plastic sound insulation cotton may be more effective; if the purpose is to reduce the reflection of high-frequency noise such as indoor human voice, polyester fiber sound insulation cotton will be more suitable.
Other properties: Rubber-plastic sound insulation cotton has good waterproof and moisture-proof properties, because its closed-cell structure can effectively prevent moisture penetration, and is suitable for sound insulation in humid environments, such as basements, bathrooms, etc. At the same time, it also has a certain flame retardancy, which can delay the spread of fire to a certain extent. Polyester fiber sound insulation cotton is outstanding in environmental protection. It is usually made of natural polyester fiber, does not contain harmful substances, is recyclable, and is friendly to the human body and the environment. In addition, it also has good thermal insulation performance and can regulate indoor temperature to a certain extent.
Application scenarios: Based on the characteristics of rubber-plastic sound insulation cotton, it is widely used in engineering fields such as building exterior wall sound insulation, air conditioning pipe sound insulation, and machine room noise reduction. In some industrial places with high requirements for waterproofing and fireproofing, rubber-plastic sound insulation cotton is also one of the preferred materials. Polyester fiber sound insulation cotton is more used in interior decoration, such as sound-absorbing decoration in home theaters, KTVs, recording studios and other places. It can not only effectively improve the acoustic environment, but also can be made into various shapes and colors to meet the needs of different decoration styles due to its beautiful and easy processing characteristics. In family bedrooms, study rooms and other spaces that have high requirements for environmental protection and comfort, polyester fiber sound insulation cotton is also often used for sound insulation treatment of walls or ceilings.
