Recently, many readers have consulted with reporters. How can they reduce the noise pollution in the city? Choosing some effective sound-proofing materials as doors and windows to “arm their own houses†has become a concern of many citizens.
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There are many kinds of sound insulation materials
Currently, there are three kinds of sound insulation materials on the market: Insulating glass consists of two or more layers of flat glass, and two or more pieces of glass are bonded with aluminum alloy frames or rubber strips with high-strength, airtight composite adhesives. Leave space between sealed glass and fill with inert gas for excellent thermal and acoustic insulation. Due to the poor heat transfer performance of air or gas trapped in the glass, superior sound insulation results.
Laminated glass refers to the PVB interlayer film sandwiched between two or more sheets of glass. PVB interlayer can reduce the amount of noise that penetrates the glass, reduce noise decibels, and achieve sound insulation. For example, laminated glass made of SAflex PVB plastic intermediate film can effectively block the common 1000-2000 Hz anastomosis noise.
Sound-absorbing decorative board is a new building material, with excellent sound-absorbing properties and flame-retardant and fire-retardant effects. Generally, there are a variety of colors and pattern decorative cloths to choose from, and some products can also be processed into various shapes of sound-absorbing body according to design requirements.
Plastic, aluminum alloy doors and windows features
The relevant person of the Goldman Sachs Home Furnishings Hall told reporters: “The soundproofing performance of plastic steel doors and windows horizontally pulls the window depends on the degree of closeness between the two windows and between the window and the window frame, and pushing the window is determined by closing the rear window and frame. Adhesion, plastic steel doors and windows are generally sealed with plastic strips, and ordinary aluminum alloy window 'hard hit hard' different sound effects are obvious.
Currently, there are various styles of steel doors and windows, in addition to the traditional internal and external flat open, push and pull type and folding type, there are open-hanging hanging windows and doors, push-pull upper hanging doors and windows, sliding under hanging doors and windows. The common plastic doors and windows on the market are mostly white, but color profiles also appear.
The sealing of plastic doors and windows is good, ensuring the soundproofing effect, but at the same time it also brings the weakness of insufficient air circulation. In view of this situation in the market, ventilators used when closing windows have been developed, which do not affect the sound insulation but also ensure the exchange of indoor and outdoor air. Ventilators can be installed between windows and window lines and do not take up space.
Most people think that the soundproof effect of aluminum alloy doors and windows is not good, but in fact, the new aluminum alloy doors and windows have made a great improvement in the sealing noise performance. The sound insulation performance of the window mainly lies in the sound insulation effect of the glass occupying about 80% of the area, followed by the sealing performance of the doors and windows.
Some aluminum alloy doors and windows products in the market today adopt different glass composite structures to enhance the sound insulation effect. In terms of airtightness of doors and windows, the use of high-quality rubber strips and plastic sealing accessories has also largely solved the problem of poor sealing performance of aluminum alloy doors and windows.
Noise more than 50 dB affects sleep and rest
The intensity of the noise can be expressed in sound levels in decibels (dB). A noise level of 30 to 40 dB is a relatively quiet environment; more than 50 dB will affect sleep and rest; 70 dB or more interfere with the conversation, causing upset, lack of concentration; long-term work or living in a noise environment of more than 90 decibels , will seriously affect the hearing and lead to cardiovascular disease and other diseases.
At the same time, noise can also produce psychological effects. Under high-frequency noise, most people are uneasy and excited. Living in a high-noise environment for a long period of time can easily lead to irritability and sluggishness and affect work efficiency.
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