See if the performance of the sound absorbing panel has a test report
In theory, any material has sound insulation, even a thin paper can be soundproof, so many of the products on the market are just very common, manufacturers call it sound-absorbing panels, including gypsum board, magnesium board, silicon Calcium acid boards, wood boards, etc., make consumers easy to be deceived. One of the most important principles of choosing a sound absorbing panel: whether the sound absorbing panel has an authoritative test report. At present, the most authoritative wall sound insulation detection reporting units in China include the Institute of Architectural Acoustics of Tsinghua University and Tongji University. Many manufacturers in the market are promoting how good their sound-absorbing panels are, but there is no way to provide authoritative test reports to confirm. The sound-absorbing panels and sound-insulating coatings are all tested at Tsinghua University and Tongji University, and have an official test report indicating the sound insulation effect of the wall composed of the sound-absorbing panels. If a sound-absorbing panel advertises its sound insulation performance, but does not provide a formal test report, consumers must be worried. Secondly, it is also necessary to pay attention to whether the sound-absorbing panels sold by the manufacturer and the samples sent for inspection are the same product. If the samples to be inspected are thickened, aggravated, made of different materials or specially treated, and the actual sales of the samples are different products, then the products sold will obviously not reach the sound insulation value indicated in the test report. In this respect, consumers should pay attention to distinguishing the qualifications, credits and goodwill of the manufacturers, and avoid being deceived as much as possible. It is a high-tech enterprise founded by Dr. Guoguo. It is co-founded by venture capital investment. It attaches great importance to the company's credit and product quality. The sound-absorbing panels promised to be sold are absolutely identical to the sound-absorbing panels samples sent for inspection.
Look at the installation of sound absorbing panels is simple
In order to achieve a good sound insulation effect, the installation method of the sound absorbing panel must be very simple, otherwise it is difficult to achieve the desired sound insulation effect. Professional acoustic engineers know that if a wall is tested for soundproofing X-dB in the laboratory, it is often only soundproofed by X-2 decibels in actual engineering, and even the sound insulation effect is lower. There are two main reasons for the wall insulation value of the actual project being lower than the laboratory test value: including the lateral sound transmission problem in the actual project, and the installation quality of the wallboard in the actual project is not as good as the installation quality of the professionals in the laboratory. of. Therefore, the installation of the sound absorbing panel must be simple, otherwise the installation personnel on the site will certainly make mistakes, resulting in the wall sound insulation value not reaching the sound insulation target. For example, elastic strips have been used more in the United States. It is a good sound insulation and product. The use of elastic horizontal strips in the laboratory can improve the sound insulation of lightweight plasterboard walls by 5-10 decibels. However, in actual engineering, the installation worker often cannot accurately mount the plate on the elastic cross bar, which results in a very limited improvement in the actual sound insulation effect of the wall.
Look at the thickness and weight of the sound absorbing panel
There are some ordinary sound absorbing panels on the market. In order to improve the sound insulation effect, the thickness and weight of the wallboard are increased. This method can improve the sound insulation effect to a certain extent, but it brings many disadvantages: 1) Sound insulation efficiency (ie, the increase in sound insulation) is low, because according to the laws of physics, the surface density of the board is doubled, and the sound insulation amount can theoretically increase by at most 6 decibels; the wall panel density is increased by four times, and the sound insulation can only increase by 12 decibels. . 2) The thicker the wallboard, the more space it occupies, and the more valuable living space people lose. 3) The heavier the wallboard, the more difficult it is to install; and the wallboard is too heavy, and it is also necessary to consider whether the floor can withstand the problem. 4) The thicker and heavier the wallboard, the more raw materials used in the production of wallboard, the higher the price of the wallboard, the higher the installation cost, and the higher the value of the lost living space, resulting in the higher overall cost of the final project. . The sound absorbing panel is a soundproofing material based on the completely new sound insulation principle. The significantly improved sound insulation effect is not achieved by increasing the weight and thickness. In fact, the sound absorbing panel is only 18 mm thick and can even be thinner, but it is composed of The light steel keel wall can achieve a sound insulation of 53 decibels. With a suitable wall combination, the sound insulation of the wall can even reach 80 decibels. The sound absorbing panels of the same thickness and weight of the sound absorbing panels on the market today not only have the best sound insulation effect, but also have many times better sound insulation than any sound absorbing panels of the same thickness and weight.
See how long the sound insulation effect can last
There are some sound absorbing panels on the market which are made of rubber layer, vibration damping material or soundproof felt between the two boards. This method can improve the sound insulation effect to a certain extent in a short period of time, but the sound insulation effect will be Gradually decrease with time. It is well known that materials such as rubber slowly age in the air, causing them to gradually harden and lose their elasticity, resulting in a gradual decrease in sound insulation over time. On the other hand, the practice of installing a rubber layer or a sound-insulating felt layer between the two plates is also very expensive. The sound absorbing panel is a new type of polymer material which is compounded in a special process between the two boards. The performance of the material is unchanged for a lifetime, and the sound insulation effect is maintained for at least 50 years. The green-green acoustic sealant used to seal the gaps in the wall also maintains viscoelasticity for a lifetime, never cracks or deforms, and the sound insulation effect will never decrease.
Look at the strength, waterproof and fire resistance of the sound absorbing panels
While improving the sound insulation effect of the wall, it is also necessary to pay attention to other properties of the wall at the same time, such as whether the strength of the new sound insulation wall or the old wall sound insulation is satisfactory, if you want to hang a heavy object on the wall, For example, flat-panel TVs, large oil paintings or photo frames, large decorative lights, etc., require wall panels to have a certain strength and can withstand a certain weight. If there are more people in the room or a large flow of people, the wallboard is required to have high impact resistance and high strength, so as to prevent people from hitting the wall panel and causing the wall to crack. If the wall panel is close to the wet parts such as the faucet and the bathroom, the wallboard needs to have good waterproof performance. If the wall requires high fire resistance (such as walls and ceilings in kitchens and garages), purchase sound-absorbing and fire-resistant sound absorbing panels. At present, the sound absorbing panel 458 not only has a sound insulation effect several times higher than that of similar products, but also can easily achieve a sound insulation effect of more than 53 decibels for a single keel wall, and the strength of the sound absorbing panel 458 is much higher than that of a gypsum board of the same thickness, and the fire resistance is also high. Significantly improved. If customers have higher requirements for strength, water resistance, mildew resistance and fire resistance, they can also provide customers with different products and solutions.
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