Noise pollution is also a kind of pollution. Due to the close proximity of modern households, sometimes some noise can cause problems in the neighborhood. How can we put an end to these problems? It is a good way to use soundproof home improvement materials. What are the indoor soundproofing materials? What are the precautions for the purchase of indoor soundproofing materials? Let’s take a look at it. 1. What are the indoor sound insulation materials? 1. Soundproof felt Sound insulation felt is a good room sound insulation material on the market. It is mainly used in combination with gypsum board for wall sound insulation and ceiling sound insulation, as well as for sound insulation and damping of pipes and mechanical equipment. The soundproof felt is not felt, it looks completely different in appearance, the felt is light and soft, and the soundproof felt is thin and heavy. The soundproof felt is made of odorless EPDM rubber and a dozen kinds of organic minerals in a certain proportion. The product is black, environmentally friendly and has no odor. It has a good sound insulation material for low frequency and high frequency sound, which can effectively suppress various kinds. The vibration spread, the thickness of the material is 1mm, 2mm, 3mm. According to the National Building Materials Bureau, the weighted sound insulation Rw is 23dB, 27dB, 30dB, and the flexibility of the material is also very good. It can be bent and cut freely. Very convenient and fireproof soundproofing material. The acoustic felt has the following advantages: 1), the material is light, ultra-thin 2), soft, strong tensile strength 3), environmental protection, does not cause environmental pollution 4), suppress the propagation of low-frequency sound waves; excellent flame retardant performance 5), convenient construction 2, polyester fiber sound absorbing panels It is an ideal indoor sound insulation material. Its raw material is 100% polyester fiber, which has sound absorption, environmental protection, flame retardant, heat insulation, heat preservation, moisture proof, mildew resistance, easy dust removal, easy cutting, can be parquet, simple construction, good stability, good impact resistance and independence. Good character, high cost performance, etc., a variety of colors to choose from, to meet the needs of different styles and levels of sound-absorbing decoration. Mainly used in theaters, concert halls, museums, exhibition halls, libraries, interrogation rooms, galleries, auction halls, gymnasiums, lecture halls, multi-purpose halls, hotel lobbies, hospitals, shopping malls, schools, piano rooms, conference rooms, studios , recording studios, KTV rooms, bars, industrial plants, machine rooms, home noise reduction and other places that require high acoustic environment and high-end decoration. 3, wave sound absorption sponge The indoor soundproofing material of the wave sound absorbing sponge is a kind of sponge which is specially treated to form a concave and convex wave shape. The inside is filled with fine voids and a semi-opening structure, which can absorb a large amount of incident sound wave energy and attenuate sound waves. It reduces the interference and reverberation of indoor reflected sound and improves the purity of sound. The main performance characteristics are: 1), high sound absorption rate 2), good insulation 3), flame retardant grade B1 4), compact structure, stable shape 5), the weight is very light, construction is safe and convenient 6), harmless to the human body, no pollution to the environment, no odor 7), water resistance, strong drainage after water immersion, sound absorption performance does not decrease, the shape is unchanged (8) can be used twice, easy to destroy, no secondary pollution to the environment Second, the purchase of indoor sound insulation materials 1, soundproof window purchase Look at the materials: including aluminum profiles, glass, hardware, color is consistent, hardware assembly is complete. Look at processing: high-quality aluminum alloy window, fine processing, smooth tangent, uniform angle (the main frame is usually 45 degrees or 90 degrees), there should be no obvious gaps in the stitching process, the switch is smooth. Look at the glass: see if it is hollow glass, there is no coating, and the composite film is generally resistant to corrosion, abrasion and high gloss. Look at the size: check if the window size is correct. 2, soundproof door purchase Look at the weight: the formula of the sound insulation is directly related to the density of the material, so the sound insulation with high density is relatively good, and the molded door is relatively light, which is the source of poor sound insulation of the molded door. But note: the soundproof cotton in the middle of the flat hollow door will be more soundproof than the solid wood door. Look at the thickness: the thicker the surface layer, the better the sound insulation effect. The general laminate of the wooden door should be 8mm thick. The thickness of the surface layer is also good, but the cost is increased. However: the iron surface of the iron plate fire door is 3mm thick, and the sound insulation effect is also good. Look at the flatness: the flatter the wooden door, the better the combination with the door cover, regardless of the structure. As long as the deformation of the wooden door is not soundproof. Tips for selecting soundproof doors: The sound insulation of the door mainly depends on the quality of the door panel, mainly depending on the filling of the core of the door. Generally, the core of the molded soundproof door is filled with a paper base of a honeycomb structure, and the closed air layer formed by the core can provide good sound insulation. Copper nuts made of all kinds of embossed wire (usually lead brass, such as H59, 3604, 3602). Our daily contact with the embedded knurled copper nuts are processed by precision automatic lathes. The reference standard of embedded knurled copper nut comes from GB/T809, but the technical parameters of all kinds of embedded nuts produced by our company exceed the relevant indexes required by the national standard. 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