Indoor sound-absorbing coating
By using a sound-absorbing coating composed of a substrate, a leveling layer, a sound-absorbing putty coating, and glass microspheres in interior decoration, the problems of space occupation, high cost, and poor strength of sound-absorbing materials are solved, achieving efficient sound absorption and convenient construction.
Patent Information
- Application Number
- CN202422443420.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-10
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-10-10
AI Technical Summary
Existing sound-absorbing materials occupy valuable building space, are costly, difficult to install, have poor structural strength, and cannot work effectively for extended periods under harsh conditions.
An indoor sound-absorbing coating is composed of a substrate, a leveling layer, a first sound-absorbing putty coating, a second sound-absorbing putty coating, glass microspheres, and a sound-absorbing latex paint coating. It utilizes the microporous structure of hollow glass microspheres and the air permeability of silicone resin to absorb sound through heat conduction generated by air vibration and friction.
It achieves long-term effective sound absorption performance under harsh working conditions, reduces material weight and construction difficulty, lowers costs, and has high practicality and market promotion prospects.
Smart Images
Figure CN223548754U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of indoor sound absorption technology, specifically to an indoor sound absorption coating. Background Technology
[0002] A noise source of the same decibel level always sounds louder indoors than outdoors because sound is reflected when it encounters interior surfaces. The intermingling and accumulation of direct and reflected noise create reverberation. Applying sound-absorbing materials or structures to ceilings and walls during interior design can partially absorb reflected sound energy, shorten reverberation time, and reduce indoor noise levels. Currently, sound-absorbing materials are primarily used in musical acoustic spaces such as theaters, concert halls, and studios. However, few studies have comprehensively addressed the effects of indoor and ceiling sound absorption in general interior design spaces such as residences, offices, supermarkets, exhibition halls, restaurants, museums, shopping malls, auditoriums, and hospitals.
[0003] Most existing sound-absorbing materials are flat panels, primarily used for interior ceilings or wall decorations. However, their biggest drawback is that they enclose and occupy part of the building's usable space, making the interior space feel cramped. They are also costly and difficult to install. In particular, there are no corresponding sound-absorbing products for the most popular putty and latex paint coatings, which severely limits the promotion and application of sound-absorbing materials in decoration and renovation projects. Moreover, the structural strength of existing sound-absorbing materials is generally poor, mainly relying on porous sound-absorbing materials. Although these materials have significant sound absorption effects, they cannot work effectively for a long time under harsh working conditions. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] The purpose of this utility model is to provide an indoor sound-absorbing coating to solve the problems mentioned in the background art, which are that the coating closes off and occupies part of the effective space of the building, making the indoor space appear crowded, and is also costly, difficult to install, and the existing sound-absorbing materials generally have poor structural strength, mainly relying on porous sound-absorbing materials. Although such materials have significant sound absorption effects, they cannot work effectively for a long time under harsh working conditions.
[0006] (II) Technical Solution
[0007] To achieve the above objectives, this utility model provides the following technical solution: an indoor sound-absorbing coating, comprising a substrate, a leveling layer fixedly disposed at the right end of the substrate, a first sound-absorbing putty coating fixedly disposed at the right end of the leveling layer, a second sound-absorbing putty coating fixedly disposed at the right end of the first sound-absorbing putty coating, a sound-absorbing latex paint coating fixedly disposed at the right end of the second sound-absorbing putty coating, and glass microspheres fixedly disposed inside the second sound-absorbing putty coating and the sound-absorbing latex paint coating.
[0008] Preferably, the hollow glass microspheres, as a type of micro-elastic, have numerous micropores and strong water absorption. During the putty mixing and molding process, water enters the micropores of the perlite, causing the air inside the micropores to be expelled. The expelled gas diffuses within the putty slurry, forming numerous interconnected pores within the material. The sound absorption performance of the material is achieved through these numerous interconnected micro-voids and pores. When sound waves enter the material along the micropores or gaps, they excite the air within the micropores or gaps to vibrate. The friction between the air and the pore walls generates heat conduction. Due to the viscosity of the air, corresponding viscous resistance is generated within the micropores or gaps, causing the energy of the vibrating air to be continuously converted into heat energy and consumed, thus weakening the sound energy and achieving the purpose of sound absorption. The glass microspheres are 0.15 to 2 mm thick, white, and have a particle size of 100 to 350 mesh. The hollow glass microsphere layer can be sprayed on after the putty coating is applied.
[0009] Preferably, the leveling layer is made of silicone resin. Silicone resin is a high-molecular-weight, three-dimensionally cross-linked compound with a structure similar to quartz. Both are based on a silicon / oxygen framework. In silicone resin, one out of every four oxygen atoms is replaced by an organic group R. Silicone resin is the most breathable of all coating resins because 80% of its framework structure is composed of inorganic silicon and oxygen. With the addition of silicone resin emulsion, the breathability of the coating improves. Silicone resin emulsion can greatly improve the breathability of the coating film. The silicone resin is water-based, a milky white emulsion with a solid content of 50% to 60%.
[0010] Preferably, the thickness of the first sound-absorbing putty coating and the second sound-absorbing putty coating is 0.5 to 2 millimeters, and they are commercially available.
[0011] Preferably, the sound-absorbing latex paint coating is a water-based, breathable latex paint, commercially available, with a single coat thickness of 0.15 to 0.5 mm.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] 1. This indoor sound-absorbing coating, by setting a leveling layer, a first sound-absorbing putty coating, a second sound-absorbing putty coating, glass microspheres, and a sound-absorbing latex paint coating at the outer end, can achieve good sound absorption capabilities, with a noise reduction coefficient (NRC) of 0.33. Since the hollow glass microspheres are very lightweight, the weight of the sound-absorbing putty and sound-absorbing latex paint is reduced, allowing it to work effectively for a long time under harsh working conditions, reducing labor intensity, making construction more convenient and faster, and significantly reducing costs. It has high practicality and good market promotion prospects.
[0014] 2. This indoor sound-absorbing coating utilizes hollow glass microspheres, which act as micro-elastomers. These microspheres have numerous micropores and strong water absorption. During the putty mixing and application process, water enters the micropores of the perlite, causing air to escape. The expelled air diffuses within the putty slurry, forming numerous interconnected pores within the material. The material's sound absorption performance is achieved through these numerous interconnected micro-voids and pores. When sound waves enter the material along these micropores or gaps, they excite the air within them to vibrate. The friction between the air and the pore walls generates heat conduction. Due to the viscosity of the air, corresponding viscous resistance is generated within the micropores or gaps, causing the energy of the vibrating air to be continuously converted into heat energy and consumed, thus weakening the sound energy and achieving the purpose of sound absorption. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0016] Figure 2 This is a schematic cross-sectional view of the present invention.
[0017] Figure 3 This is a cross-sectional structural diagram of the second sound-absorbing putty coating and the sound-absorbing latex paint coating of this utility model;
[0018] Figure 4 This is a magnified structural diagram showing a partial detail of the present invention.
[0019] In the diagram: 1. Substrate; 2. Leveling layer; 3. First sound-absorbing putty coating; 4. Second sound-absorbing putty coating; 5. Glass microspheres; 6. Sound-absorbing latex paint coating. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] Please see Figure 1 - Figure 4 This utility model provides a technical solution: an indoor sound-absorbing coating, including a substrate 1, a leveling layer 2 fixedly disposed at the right end of the substrate 1, a first sound-absorbing putty coating 3 fixedly disposed at the right end of the leveling layer 2, a second sound-absorbing putty coating 4 fixedly disposed at the right end of the first sound-absorbing putty coating 3, a sound-absorbing latex paint coating 6 fixedly disposed at the right end of the second sound-absorbing putty coating 4, and glass microspheres 5 fixedly disposed inside the second sound-absorbing putty coating 4 and the sound-absorbing latex paint coating 6.
[0022] Hollow glass microspheres, as a type of micro-elastic, have numerous micropores and strong water absorption. During putty mixing and molding, water enters the micropores of perlite, causing air to escape. The expelled gas diffuses within the putty slurry, forming numerous interconnected pores within the material. The material's sound absorption performance is achieved through these numerous interconnected micro-voids and pores. When sound waves enter the material along these micropores or gaps, they excite the air within them to vibrate. The friction between the air and the pore walls generates heat conduction. Due to the viscosity of the air, corresponding viscous resistance is generated within the micropores or gaps, causing the energy of the vibrating air to be continuously converted into heat energy and consumed, thus weakening the sound energy and achieving the purpose of sound absorption. The microspheres 5 are 0.15 to 2 mm thick, white, and have a particle size of 100 to 350 mesh. After the putty coating is applied, the hollow glass microspheres 5 layer can be sprayed on. By setting a leveling layer 2, a first sound-absorbing putty coating 3, a second sound-absorbing putty coating 4, glass microspheres 5, and a sound-absorbing latex paint coating 6 at the outer end of 1, the indoor sound-absorbing coating can have good sound absorption capabilities, and the noise reduction coefficient (NRC) can reach 0.33. Since the hollow glass microspheres are very lightweight, the weight of the sound-absorbing putty and sound-absorbing latex paint is reduced, allowing them to work effectively for a long time under harsh working conditions, reducing labor intensity, making construction more convenient and faster, and significantly reducing costs. It has high practicality and good market promotion prospects.
[0023] Leveling layer 2 is made of silicone resin. Silicone resin is a high-molecular-weight, three-dimensionally cross-linked compound with a structure similar to quartz. Both are based on a silicon / oxygen framework. In silicone resin, one out of every four oxygen atoms is replaced by an organic group R. Silicone resin is the most breathable of all coating resins because 80% of its framework structure is composed of inorganic silicon and oxygen. With the addition of silicone resin emulsion, the breathability of the coating improves. Silicone resin emulsion can greatly improve the breathability of the paint film. The silicone resin is water-based, milky white emulsion with a solid content of 50% to 60%. The thickness of the first sound-absorbing putty coating 3 and the second sound-absorbing putty coating 4 is 0.5 to 2 mm, commercially available. The sound-absorbing latex paint coating 6 is a water-based breathable latex paint, commercially available, with a single coat thickness of 0.15 to 0.5 mm.
[0024] Working principle: When this indoor sound-absorbing coating is needed, by setting a leveling layer 2, a first sound-absorbing putty coating 3, a second sound-absorbing putty coating 4, glass microspheres 5, and a sound-absorbing latex paint coating 6 at the outer end of 1, the indoor sound-absorbing coating can have good sound absorption capacity, and the noise reduction coefficient (NRC) can reach 0.33. Since the hollow glass microspheres are very lightweight, the weight of the sound-absorbing putty and sound-absorbing latex paint is reduced, allowing it to work effectively for a long time under harsh working conditions, reducing labor intensity, making construction more convenient and faster, and significantly reducing costs. It has high practicality and good market promotion prospects.
[0025] Finally, it should be noted that the above content is only used to illustrate the technical solution of this utility model, and is not intended to limit the scope of protection of this utility model. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model do not depart from the essence and scope of the technical solution of this utility model.
Claims
1. An indoor sound-absorbing coating, comprising a substrate (1), characterized in that: A leveling layer (2) is fixedly provided at the right end of the substrate (1), a first sound-absorbing putty coating (3) is fixedly provided at the right end of the leveling layer (2), a second sound-absorbing putty coating (4) is fixedly provided at the right end of the first sound-absorbing putty coating (3), a sound-absorbing latex paint coating (6) is fixedly provided at the right end of the second sound-absorbing putty coating (4), and glass microspheres (5) are fixedly provided inside the second sound-absorbing putty coating (4) and the sound-absorbing latex paint coating (6).
2. The indoor sound-absorbing coating according to claim 1, characterized in that: The glass microspheres (5) are micro-elastics with many micropores inside and have strong water absorption. The glass microspheres (5) are 0.15 to 2 mm thick, white, and have a particle size of 100 to 350 mesh. The hollow glass microspheres (5) layer can be sprayed on after the putty coating is applied.
3. The indoor sound-absorbing coating according to claim 1, characterized in that: The leveling layer (2) is an organosilicon resin, which is water-based, a milky white emulsion, with a solid content of 50% to 60%.
4. The indoor sound-absorbing coating according to claim 1, characterized in that: The thickness of the first sound-absorbing putty coating (3) and the second sound-absorbing putty coating (4) is 0.5 to 2 mm, and they are commercially available.
5. The indoor sound-absorbing coating according to claim 1, characterized in that: The sound-absorbing latex paint coating (6) is a water-based breathable latex paint, commercially available, with a single coat thickness of 0.15 to 0.5 mm.