Sound-absorbing coating material and preparation method thereof

Abstract

The invention discloses a sound-absorbing coating material, wherein every 100 parts by mass of coating contains 5-50 parts by mass of sound-absorbing function materials, 0.1-35 parts by mass of flame retardant materials, 10-40 parts by mass of binding materials, and the balance of an inorganic filling, an assistant and water in a common coating. The sound-absorbing function materials are selected from one or composite of some of materials such as slag fibers, mineral fibers, glass fibers and wood fibers, with fiber structures, and the sound-absorbing function materials are subjected to waterproof modification treatment. According to the invention, NRC (Noise Reduction Coefficient) of the coating material is tested to be more than 0.4 by using a standing wave tube method, and the sound-absorbing coating material has a good sound-absorbing denoising performance, excellent flame resistance and low heat conductivity coefficient, can be used for reducing the energy consumption of a building, is an environmental-friendly functional sound-absorbing coating material integrated with functions of sound absorption, flame resistance and decoration, and can be used on the surface of the building.

Description

technical field [0001] The invention belongs to the field of building materials and relates to a novel sound-absorbing coating material, which can be widely used in building indoor environments. The material not only has excellent sound absorption performance, but also has good fireproof and waterproof performance, and has good decorative performance. Background technique [0002] Together with air pollution and water pollution, noise pollution is called the three major pollutions in the world today. Especially with the rapid development of industry in recent years, the rapid development of the automobile industry, and the improvement of people's living standards, these factors have brought huge noise pollution to the living environment. Noise pollution will not only affect the safe performance of mechanical, electronic and other equipment, but also bring serious harm to human health. [0003] People pay more and more attention to the harm of noise pollution to people's he...

AI Technical Summary

Problems solved by technology

Patent CN1429869A discloses a special flashing sound-absorbing coating for concert halls, which mainly adds perlite and foamed polystyrene particles. The amount of perlite added is relatively high, but the sound absorption performance is poor, and the foamed polystyrene has poor combustion resistance. Limited in terms of sound absorption and fire performance

Patent CN100543095C discloses a light-weight sound-absorbing coating and its preparation method, which uses open-cell expanded perlite as the aggregate and acrylic acid emulsion as the bonding material. The application of perlite in the field of sound-absorbing materials is mainly concentrated in thick In sheet products, thin coatings have poor sound absorption

At the same time, the sound absorption coefficient measured by the reverberation chamber method is significantly higher than that of the standing wave tube method

In addition, the product has not been treated for fire protection, which will bring safety hazards to buildings

At the same time, none of the materials used in the existing patents has been waterproofed, because the performance of the sound-absorbing materials will drop sharply after absorbing water, so these products will have imperfect and immature aspects when they are popularized and used.

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