Sound insulation coating, sound insulation glass and preparation method of sound insulation glass

Abstract

The invention provides a sound insulation coating, sound insulation glass and a preparation method thereof. The sound insulation coating comprises the following components in percentage by weight: 15%-35% of a high-molecular polymer, 3%-12% of an inorganic filler, 1%-10% of a cellulose dispersion liquid, 55%-70% of a solvent, 0.1%-1% of an auxiliary agent and 0.5%-1% of a coupling agent, wherein the inorganic filler comprises a hollow inorganic filler; the cellulose dispersion liquid comprises bacterial cellulose dispersion liquid and / or cellulose nanofiber dispersion liquid. The invention further provides sound insulation glass which is provided with a sound insulation coating formed by the sound insulation coating. The sound insulation coating provided by the invention has the advantages of light weight, good sound insulation, good weather resistance and the like, so that the sound insulation coating is suitable for sound absorption and noise reduction of vehicle glass such as automobile glass.

Description

Technical Field

[0001] The invention relates to a sound insulation coating, a sound insulation glass and a preparation method thereof, and belongs to the technical field of glass coating preparation. Background Art

[0002] With the rapid development of the automobile industry, consumers' requirements for riding comfort are constantly increasing. Among all the qualities that satisfy automobile comfort, quietness has become an important quality. Therefore, the research and development and application of automobile soundproof glass are particularly important.

[0003] At present, automobile glass mainly adopts a sandwich structure to achieve the sound insulation function. However, the preparation of automobile glass containing a PVB layer is complicated, and the sound insulation performance needs to be improved.

[0004] Therefore, developing new sound insulation solutions for vehicles is a technical problem that needs to be solved urgently in this field. Summary of the invention

[0005] In order to solve the above technical problems, the object of the present invention is to provide a sound insulation coating and a preparation method thereof, wherein the sound insulation coating can form a sound insulation coating on the surface of vehicle glass, thereby providing good sound insulation performance.

[0006] The present invention also aims to provide a soundproof glass and a preparation method thereof, wherein the surface of the soundproof glass has a soundproof layer formed by the above-mentioned soundproof coating.

[0007] To achieve the above object, the present invention provides a sound insulation coating, wherein, by weight percentage, the components of the sound insulation coating include: 15%-35% high molecular polymer, 3%-12% inorganic filler, 1%-10% cellulose dispersion, 55%-70% solvent, 0.1%-1% auxiliary agent, and 0.5%-1% coupling agent;

[0008] Wherein, the inorganic filler comprises a hollow inorganic filler;

[0009] The cellulose dispersion includes bacterial cellulose dispersion and / or cellulose nanofiber dispersion.

[0010] According to a specific embodiment of the present invention, preferably, the components of the sound insulation coating include, by weight percentage: 19%-27% high molecular polymer, 4%-11% inorganic filler, 4%-7% cellulose dispersion, 62%-68% solvent, 0.3%-0.5% additive, and 0.6%-0.9% coupling agent.

[0011] According to a specific embodiment of the present invention, preferably, in the above-mentioned sound insulation coating, the high molecular polymer includes one or a combination of two or more of epoxy resin, polycarbonate, polyacrylate, polyvinyl butyral, polyurethane and phenolic resin.

[0012] According to a specific embodiment of the present invention, the hollow inorganic filler used in the present invention also includes hollow materials. Preferably, in the above-mentioned sound insulation coating, the hollow inorganic filler includes hollow glass microspheres and / or silica microspheres.

[0013] According to a specific embodiment of the present invention, preferably, in the above-mentioned sound insulation coating, the particle size of the hollow glass microspheres is 20 μm-80 μm, and the wall thickness is 1 μm-2 μm.

[0014] According to a specific embodiment of the present invention, preferably, in the above-mentioned sound insulation coating, the silica microspheres include one or a combination of two or more of hollow silica, hollow silica, and mesoporous hollow silica. More preferably, the particle size of the silica microspheres is 0.3 μm-3 μm, and the wall thickness is 0.1 μm-0.5 μm. The purity of the silica microspheres used in the present invention is preferably above 99%.

[0015] According to a specific embodiment of the present invention, preferably, in the above-mentioned sound insulation coating, the concentration of the cellulose dispersion is 4%-8%. The cellulose used in the present invention can form a network structure by interweaving with each other, and has reactive groups such as hydroxyl or carboxyl, and can be compounded with other materials. For example, cellulose can interpenetrate with polymers to construct a three-dimensional network structure, creating a certain pore space, which has a certain contribution to the sound insulation performance.

[0016] According to a specific embodiment of the present invention, preferably, in the above-mentioned sound insulation coating, the solvent includes one or a combination of two or more of methanol, ethanol, isopropanol, propylene glycol methyl ether and ethyl acetate.

[0017] According to a specific embodiment of the present invention, preferably, in the above-mentioned sound insulation coating, the auxiliary agent includes one or a combination of two or more of a leveling agent, a wetting agent, a dispersant, etc. Among them, the leveling agent, the wetting agent, and the dispersant can be selected from the corresponding auxiliary agents commonly used in the art, for example: the leveling agent can be selected from polyether-modified polydimethylsiloxane, BYK333, BYK307, etc.; the wetting agent can be selected from polyoxyethylene fatty alcohol ether, WT200, WT500, etc.; the dispersant can be selected from carboxylate dispersants, ANTI-TERRA-202, ANTI-TERRA-203, etc.

[0018] According to a specific embodiment of the present invention, preferably, in the above-mentioned sound insulation coating, the coupling agent includes one or a combination of two or more of (3-glycidylpropoxy)trimethoxysilane, 3-aminopropyltriethoxysilane and γ-methacryloxypropyltrimethoxysilane.

[0019] The present invention also provides a method for preparing the above-mentioned sound insulation coating, which comprises the following steps:

[0020] The high molecular polymer and the inorganic filler are dispersed in the solvent respectively, and after being evenly dispersed, the two are mixed to form a mixed liquid;

[0021] The cellulose dispersion, the auxiliary agent and the coupling agent are added in sequence to obtain the sound insulation coating.

[0022] In the preparation method of the above-mentioned sound insulation coating, after the high molecular polymer and the inorganic filler are mixed to obtain a mixed solution, the mixed solution can be stirred at room temperature so that the mixed solution can be fully mixed and uniformly mixed. The stirring time can be controlled to be 30 min-120 min.

[0023] In the preparation method of the above-mentioned sound insulation coating, after adding the cellulose dispersion, the auxiliary agent and the coupling agent, stirring can be carried out at room temperature so that the various components can be fully mixed and uniformly mixed. The stirring time can be controlled to be 60min-240min.

[0024] The present invention also provides a soundproof glass, wherein the soundproof glass comprises a glass substrate and a soundproof coating, wherein the soundproof coating is formed by the above-mentioned soundproof coating and is located on the surface of the glass substrate.

[0025] According to a specific embodiment of the present invention, preferably, the average sound transmission loss of the sound insulation glass is increased by more than 3 dB compared with the average sound transmission loss of the glass substrate.

[0026] According to a specific embodiment of the present invention, preferably, the visible light transmittance of the sound insulation glass is reduced by 10%-60% compared with the visible light transmittance of the glass substrate.

[0027] According to a specific embodiment of the present invention, preferably, in the above-mentioned sound insulation glass, the thickness of the sound insulation coating is 50 μm-200 μm.

[0028] The present invention also provides a method for preparing the above-mentioned sound insulation glass, which comprises the following steps:

[0029] Pre-treat, clean and dry the glass substrate;

[0030] The sound insulation coating is applied on the glass substrate and then leveled and cured to form a sound insulation coating.

[0031] According to a specific embodiment of the present invention, preferably, in the method for preparing the above-mentioned soundproof glass, the surface energy of the pretreated glass substrate is above 65 mN / N. By pretreating the glass substrate, the surface energy of the glass can be increased, so that the soundproof coating can be more closely combined with the glass and the adhesion can be improved. The above-mentioned pretreatment can be carried out by any method that can achieve the above-mentioned goal, such as at least one of polishing treatment, plasma treatment, and flame treatment.

[0032] According to a specific embodiment of the present invention, preferably, in the method for preparing the sound insulating glass, the curing temperature is 80° C.-150° C., and the curing time is 30 min-120 min.

[0033] The sound insulation coating provided by the present invention has the advantages of light weight, good sound insulation, good weather resistance, etc., and is suitable for sound absorption and noise reduction of automobile glass and other vehicle glass. The sound insulation coating provided by the present invention can be constructed with the help of high molecular polymer composite inorganic filler to construct a sound insulation coating. On the one hand, the damping effect of the high molecular polymer is used to convert the vibration energy generated during the driving of the car into frictional heat energy dissipation, thereby achieving a noise reduction effect; on the other hand, an interface is formed between the inorganic filler and the high molecular material, and the interface can scatter, diffract and reflect sound wave energy, thereby inhibiting the propagation of sound waves.

[0034] Different positions of the car have different requirements for the transparency of the glass. The present invention can control the transparency by controlling the amount of inorganic filler added. For example, in the rear windshield or sunroof glass that requires lower transparency and darker color, a sound insulation coating with a higher amount of inorganic filler added can be used. The lower the amount of inorganic filler added, the higher the transparency of the coating. However, when the amount of inorganic filler added is reduced, the sound insulation performance will also be affected. The addition of cellulose material has a relatively small effect on transparency and can compensate for the effect of the reduced content of inorganic filler on the sound insulation performance.

[0035] The sound insulation coating provided by the present invention can be directly coated on a glass substrate to prepare sound insulation glass, and the preparation process is simple and the cost is low. DETAILED DESCRIPTION

[0036] In order to have a clearer understanding of the technical features, purposes and beneficial effects of the present invention, the technical solution of the present invention is now described in detail below, but it should not be construed as limiting the applicable scope of the present invention.

[0037] Example 1

[0038] This embodiment provides a sound insulation coating and a sound insulation glass, which are prepared by the following methods:

[0039] (1) Preparation of sound insulation coating: 15 g of polycarbonate was dispersed in 30 g of propylene glycol methyl ether, and 4 g of hollow silica (particle size 500 nm, wall thickness 100 nm) was dispersed in 20 g of ethanol. After the two were evenly dispersed, they were mixed and stirred at room temperature for 40 min.

[0040] Then, 4 g of a bacterial cellulose dispersion with a mass fraction of 6%, 0.3 g of a leveling agent, and 0.6 g of (3-glycidylpropoxy)trimethoxysilane were added in sequence, and the mixture was stirred at room temperature for 240 min. After the stirring was completed, a sound insulation coating A1 was obtained.

[0041] (2) Preparation of soundproof glass: firstly, polish the glass substrate until the surface energy of the glass substrate reaches 65 mN / N or more, then clean the glass and dry it for later use;

[0042] After the glass is dried, the sound insulation coating is scraped on the glass surface and left to stand for 5 minutes to wait for leveling. Then it is placed in a 150°C oven for curing for 120 minutes. After the curing is completed, the glass is cooled to room temperature and taken out to obtain the sound insulation coating glass B1 with a coating thickness of 160μm.

[0043] Example 2

[0044] This embodiment provides a sound insulation coating and a sound insulation glass, which are prepared by the following methods:

[0045] (1) Preparation of sound insulation coating: 15 g of polycarbonate was dispersed in 30 g of propylene glycol methyl ether, and 6 g of hollow silica (particle size 500 nm, wall thickness 100 nm) was dispersed in 20 g of ethanol. After being evenly dispersed, the two were mixed and stirred at room temperature for 40 min.

[0046] Then, 4 g of a bacterial cellulose dispersion with a mass fraction of 6%, 0.3 g of a leveling agent, and 0.6 g of (3-glycidylpropoxy)trimethoxysilane were added in sequence, and the mixture was stirred at room temperature for 240 min. After the stirring was completed, a sound insulation coating A2 was obtained.

[0047] (2) Preparation of soundproof glass: firstly, polish the glass substrate until the surface energy of the glass substrate reaches 65 mN / N or more, then clean the glass and dry it for later use;

[0048] After the glass is dried, the sound insulation coating is scraped on the glass surface and left to level for 5 minutes. Then it is placed in a 150°C oven for curing for 120 minutes. After curing, the glass is taken out after cooling to room temperature to obtain sound insulation coating glass B2 with a coating thickness of 160μm.

[0049] Example 3

[0050] This embodiment provides a sound insulation coating and a sound insulation glass, which are prepared by the following methods:

[0051] (1) Preparation of sound insulation coating: 15 g of polycarbonate was dispersed in 30 g of propylene glycol methyl ether, and 8 g of hollow silica (particle size 500 nm, wall thickness 100 nm) was dispersed in 20 g of ethanol. After the two were evenly dispersed, they were mixed and stirred at room temperature for 40 min.

[0052] Then, 4 g of a bacterial cellulose dispersion with a mass fraction of 6%, 0.3 g of a leveling agent, and 0.6 g of (3-glycidylpropoxy)trimethoxysilane were added in sequence, and stirred at room temperature for 240 min. After the stirring was completed, a sound insulation coating A3 was obtained.

[0053] (2) Preparation of soundproof glass: firstly, polish the glass substrate until the surface energy of the glass substrate reaches 65 mN / N or more, then clean the glass and dry it for later use;

[0054] After the glass is dried, the sound insulation coating is scraped on the glass surface and left to level for 5 minutes. Then it is placed in a 150°C oven for curing for 120 minutes. After the curing is completed, the glass is taken out after it cools to room temperature to obtain the sound insulation coating glass B3 with a coating thickness of 160μm.

[0055] Example 4

[0056] This embodiment provides a sound insulation coating and a sound insulation glass, which are prepared by the following methods:

[0057] (1) Preparation of sound insulation coating: 20 g of polycarbonate was dispersed in 35 g of propylene glycol methyl ether, and 4 g of hollow glass microspheres (particle size of 40 μm, wall thickness of 1 μm) were dispersed in 20 g of ethanol. After the two were evenly dispersed, they were mixed and stirred at room temperature for 30 min.

[0058] Then, 6 g of a 6% bacterial cellulose dispersion, 0.3 g of a leveling agent, and 0.7 g of (3-glycidyl propoxy) trimethoxy silane were added in sequence, and the mixture was stirred at room temperature for 120 min. After the stirring was completed, a sound insulation coating A4 was obtained.

[0059] (2) Preparation of soundproof glass: First, the glass substrate is subjected to plasma treatment until the surface energy of the glass substrate reaches 65 mN / N or more. After the treatment, the glass is cleaned and dried for later use;

[0060] After the glass is dried, the sound insulation coating is scraped on the glass surface and left to stand for 5 minutes to wait for leveling. Then it is placed in an 80°C oven for curing for 60 minutes. After the curing is completed, the glass is taken out after it cools to room temperature to obtain the sound insulation coating glass B4 with a coating thickness of 170μm.

[0061] Example 5

[0062] This embodiment provides a sound insulation coating and a sound insulation glass, which are prepared by the following methods:

[0063] (1) Preparation of sound insulation coating: 25 g of polyvinyl butyral was dispersed in 40 g of ethanol, and 6 g of hollow silica (particle size of 1 μm, wall thickness of 200 nm) was dispersed in 20 g of ethanol. After the two were evenly dispersed, they were mixed and stirred at room temperature for 30 min.

[0064] Then, 4 g of 6% by mass cellulose nanofiber dispersion, 0.4 g of dispersant, and 0.6 g of γ-methacryloxypropyltrimethoxysilane were added in sequence, and stirred at room temperature for 240 min. After the stirring was completed, the sound insulation coating A5 was obtained.

[0065] (2) Preparation of soundproof glass: firstly, polish the glass substrate until the surface energy of the glass substrate reaches 65 mN / N or more, then clean the glass and dry it for later use;

[0066] After the glass is dry, spin-coat the sound insulation paint on the glass surface and let it sit for 5 minutes to level.

[0067] Then, it was placed in an oven at 80°C for curing for 120 minutes. After the curing was completed, the glass was taken out after cooling to room temperature to obtain sound insulation coated glass B5 with a coating thickness of 200 μm.

[0068] Comparative Example 1

[0069] This comparative example provides a sound insulation coating and a sound insulation glass, which are prepared by the following methods:

[0070] (1) Preparation of sound insulation coating: 15 g of polycarbonate was weighed and dispersed in 50 g of propylene glycol methyl ether. After uniform dispersion, 4 g of 6% bacterial cellulose dispersion, 0.3 g of leveling agent, and 0.6 g of (3-glycidylpropoxy)trimethoxysilane were added in sequence. The mixture was stirred at room temperature for 240 min. After the stirring was completed, sound insulation coating A6 was obtained.

[0071] (2) Preparation of soundproof glass: firstly, polish the glass substrate until the surface energy of the glass substrate reaches 65 mN / N or more, then clean the glass and dry it for later use;

[0072] After the glass is dry, apply the sound insulation paint on the glass surface and let it sit for 5 minutes to level.

[0073] Then, it was placed in an oven at 150°C for curing for 120 minutes. After the curing was completed, the glass was taken out after cooling to room temperature to obtain sound insulation coated glass B6 with a coating thickness of 160 μm.

[0074] Comparative Example 2

[0075] This comparative example provides a sound insulation coating and a sound insulation glass, which are prepared by the following methods:

[0076] (1) Preparation of sound insulation coating: 15 g of polycarbonate was dispersed in 30 g of propylene glycol methyl ether, and 6 g of hollow silica (particle size 500 nm, wall thickness 100 nm) was dispersed in 20 g of ethanol. After being evenly dispersed, the two were mixed and stirred at room temperature for 40 min.

[0077] Then, 0.3 g of a leveling agent and 0.6 g of (3-glycidylpropoxy)trimethoxysilane were added in sequence, and the mixture was stirred at room temperature for 240 min. After the stirring was completed, a sound insulation coating A7 was obtained.

[0078] (2) Preparation of soundproof glass: firstly, polish the glass substrate until the surface energy of the glass substrate reaches 65 mN / N or more, then clean the glass and dry it for later use;

[0079] After the glass is dried, the sound insulation coating is scraped on the glass surface and left to level for 5 minutes. Then it is placed in a 150°C oven for curing for 120 minutes. After curing, the glass is taken out after cooling to room temperature to obtain sound insulation coating glass B7 with a coating thickness of 160μm.

[0080] Comparative Example 3

[0081] This comparative example provides a sound insulation coating and a sound insulation glass, which are prepared by the following methods:

[0082] (1) Preparation of sound insulation coating: 15 g of polycarbonate was dispersed in 30 g of propylene glycol methyl ether, and 6 g of solid silica (particle size 500 nm) was dispersed in 20 g of ethanol. After the two were evenly dispersed, they were mixed and stirred at room temperature for 40 min.

[0083] Then, 4 g of a 6% bacterial cellulose dispersion, 0.3 g of a leveling agent, and 0.6 g of (3-glycidyl propoxy) trimethoxy silane were added in sequence, and stirred at room temperature for 240 min. After the stirring was completed, a sound insulation coating A8 was obtained;

[0084] (2) Preparation of soundproof glass: firstly, polish the glass substrate until the surface energy of the glass substrate reaches 65 mN / N or more, then clean the glass and dry it for later use;

[0085] After the glass is dried, the sound insulation coating is scraped on the glass surface and left to level for 5 minutes. Then it is placed in a 150°C oven for curing for 120 minutes. After the curing is completed, the glass is taken out after it cools to room temperature to obtain the sound insulation coating glass B8 with a coating thickness of 160μm.

[0086] Comparative Example 4

[0087] This comparative example provides a sound insulation coating and a sound insulation glass, which are prepared by the following methods:

[0088] (1) Preparation of sound insulation coating: 15 g of polycarbonate was dispersed in 30 g of propylene glycol methyl ether, and 6 g of hollow silica (particle size 500 nm, wall thickness 100 nm) was dispersed in 20 g of ethanol. After being evenly dispersed, the two were mixed and stirred at room temperature for 40 min.

[0089] Then, 4 g of a bacterial cellulose dispersion with a mass fraction of 6%, 0.3 g of a leveling agent, and 0.6 g of (3-glycidylpropoxy)trimethoxysilane were added in sequence, and stirred at room temperature for 240 min. After the stirring was completed, a sound insulation coating A9 was obtained.

[0090] (2) Preparation of soundproof glass: The glass substrate was not pre-treated, but was cleaned and dried for later use. After the glass was dried, the soundproof coating was scraped on the glass surface and left to stand for 5 minutes to wait for leveling. Then, it was placed in a 150°C oven for curing for 120 minutes. After curing, the glass was cooled to room temperature and taken out to obtain soundproof coated glass B9 with a coating thickness of 160 μm.

[0091] The performance of the sound insulation coated glass provided in each embodiment and comparative example was tested, and the testing method was as follows:

[0092] (1) Visible light transmittance test

[0093] According to the standard GB / T5137.2-2020 "Test Methods for Automobile Safety Glass", the visible light transmittance of blank glass and coated glass was tested respectively.

[0094] (2) Adhesion test: 100-grid knife test

[0095] According to the standard GB / T9286-1998 "Scratch test for paint and varnish films", the adhesion of the coating is tested. It is qualified if small pieces peel off at the intersection of the cuts and the actual damage in the cross-cut area is less than or equal to 5%.

[0096] (3) Sound insulation performance test: Reverberation chamber test

[0097] The laboratory consists of two adjacent reverberation rooms (sound source room and receiving room), with a test hole between the two rooms; the sound transmission loss of automobile glass STL = LP-6-LI (dB), that is, the average sound pressure level measured in the sound-generating room - the sound intensity level measured in the receiving room - 6dB, and the test frequency range is 200Hz-10000Hz.

[0098] A sound insulation coated glass with a length × width of 495±2mm×495±2mm is placed at the test opening and sealed with glass glue. The STL value of the 1 / 3 octave center frequency is obtained by testing, and then the average sound transmission loss is obtained by taking the average value, which represents the sound insulation performance of the sample.

[0099] Table 1 Performance test results of Examples 1-5 and Comparative Examples 1-4

[0100]

[0101] From the test results of samples B1-B3 in Table 1, it can be seen that with the increase of the amount of inorganic filler added, the average sound transmission loss of the coated glass increases, that is, the sound insulation performance improves, but the transmittance decreases;

[0102] From the test results of samples B1 and B6 in Table 1, it can be seen that compared with the coated glass without inorganic fillers, the sound insulation performance of the coated glass with inorganic fillers is significantly better, indicating that inorganic fillers have an important influence on the sound insulation performance;

[0103] From the test results of samples B2 and B7 in Table 1, it can be seen that the addition of cellulose can effectively improve the sound insulation performance. This is because cellulose and resin can build a network skeleton, create cavities, and stabilize inorganic particles, making their arrangement more orderly.

[0104] From the test results of samples B2 and B8 in Table 1, it can be seen that the sound insulation performance of hollow fillers is better than that of solid inorganic fillers. This is because the air in the cavity has viscosity and can consume part of the sound waves.

[0105] From the test results of samples B2 and B9 in Table 1, it can be seen that if the glass substrate is not pretreated, the bonding between the coating and the glass will be weak, the adhesion will decrease, and it will not pass the hundred-grid knife test.

Claims

1. A sound insulation coating, wherein: In terms of weight percentage, the components of the sound insulation coating include: 15%-35% high molecular polymer, 3%-12% inorganic filler, 1%-10% cellulose dispersion, 55%-70% solvent, 0.1%-1% auxiliary agent, and 0.5%-1% coupling agent; Wherein, the inorganic filler comprises a hollow inorganic filler; The cellulose dispersion includes bacterial cellulose dispersion and / or cellulose nanofiber dispersion.

2. The sound insulation coating according to claim 1, wherein: Measured in percentage by weight, the components of the sound insulation coating include: 19%-27% high molecular polymer, 4%-11% inorganic filler, 4%-7% cellulose dispersion, 62%-68% solvent, 0.3%-0.5% auxiliary agent, and 0.6%-0.9% coupling agent.

3. The sound insulation coating according to claim 1 or 2, wherein: The high molecular polymer includes one or a combination of two or more of epoxy resin, polycarbonate, polyacrylate, polyvinyl butyral, polyurethane and phenolic resin.

4. The sound insulation coating according to claim 1, wherein: The hollow inorganic filler includes hollow glass microspheres and / or silicon dioxide microspheres.

5. The sound insulation coating according to claim 4, wherein: The hollow glass microspheres have a particle size of 20 μm-80 μm and a wall thickness of 1 μm-2 μm.

6. The sound insulation coating according to claim 4, wherein: The silica microspheres include one or a combination of two or more of hollow silica, hollow silica and mesoporous hollow silica.

7. The sound insulation coating according to claim 6, wherein: The silica microspheres have a particle size of 0.3 μm-3 μm and a wall thickness of 0.1 μm-0.5 μm.

8. The sound insulation coating according to claim 1 or 2, wherein: The concentration of the cellulose dispersion is 4%-8%.

9. The sound insulation coating according to claim 1 or 2, wherein: The solvent includes one or a combination of two or more of methanol, ethanol, isopropanol, propylene glycol methyl ether and ethyl acetate.

10. The sound insulation coating according to claim 1 or 2, wherein: The auxiliary agent includes one or a combination of two or more of a leveling agent, a wetting agent and a dispersant.

11. The sound insulation coating according to claim 1 or 2, wherein: The coupling agent includes one or a combination of two or more of (3-glycidyl propoxy) trimethoxy silane, 3-aminopropyl triethoxy silane and γ-methacryloxypropyl trimethoxy silane.

12. The method for preparing the sound insulation coating according to any one of claims 1 to 11, comprising the following steps: The high molecular polymer and the inorganic filler are dispersed in the solvent respectively, and after being evenly dispersed, the two are mixed to form a mixed liquid; The cellulose dispersion, the auxiliary agent and the coupling agent are added in sequence to obtain the sound insulation coating.

13. A soundproof glass, wherein: The soundproof glass comprises a glass substrate and a soundproof coating, wherein the soundproof coating is formed by the soundproof coating according to any one of claims 1 to 11 and is located on the surface of the glass substrate.

14. The soundproof glass according to claim 13, wherein: The average sound transmission loss of the soundproof glass is increased by more than 3 dB compared with the average sound transmission loss of the glass substrate.

15. The soundproof glass according to claim 13, wherein: The visible light transmittance of the sound insulation glass is reduced by 10%-60% compared with the visible light transmittance of the glass substrate.

16. The soundproof glass according to claim 13, wherein: The thickness of the sound insulation coating is 50 μm-200 μm.

17. The method for preparing the sound insulating glass according to any one of claims 13 to 16, comprising the following steps: Pre-treat, clean and dry the glass substrate; The sound insulation coating is applied on the glass substrate and then leveled and cured to form a sound insulation coating.

18. The preparation method according to claim 17, wherein: The surface energy of the pretreated glass substrate is 65 mN / N or more.

19. The preparation method according to claim 17, wherein: The curing temperature is 80° C.-150° C., and the curing time is 30 min-120 min.

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