CN114958096B

CN114958096B - Sound insulation coating, preparation method and sound insulation building

Info

Publication number: CN114958096B
Application number: CN202210886108.XA
Authority: CN
Inventors: 刘青青
Original assignee: Foshan Keshun Building Material Co ltd; Keshun Waterproof Technology Co Ltd
Current assignee: Foshan Keshun Building Material Co ltd; Keshun Waterproof Technology Co Ltd
Priority date: 2022-07-26
Filing date: 2022-07-26
Publication date: 2022-11-01
Anticipated expiration: 2042-07-26
Also published as: CN114958096A

Abstract

The application belongs to the field of building materials, and particularly provides a sound insulation coating, a preparation method and a sound insulation building. The sound insulation coating comprises the following raw materials in parts by weight: 200-250 parts of water; 60-80 parts of coal slag; 100-120 parts of a filler; 80-100 parts of metal powder; 80-120 parts of aggregate; 60-100 parts of pumice particles; 240-250 parts of rubber emulsion; 100-150 parts of reed straw particles; 7.5-9.5 parts of processing aid, wherein the value range of the density rho of the metal powder is 7.5g/cm³‑11.5g/cm³. The coating has the advantages that the components in the coating act synergistically, a good sound insulation effect is achieved, the safety is high, good bonding strength and durability are achieved, and the problems that sound insulation mortar is easy to fall off and crack, sound insulation fibers volatilize fine harmful fibers and the like are solved.

Description

Sound insulation coating, preparation method and sound insulation building

Technical Field

The application belongs to the field of building materials, and particularly relates to a sound insulation coating, a preparation method and a sound insulation building.

Background

Along with the development of society, the noise pollution of cities is more and more, especially in commercial houses, because the density between buildings is low, the connection between floors is tight, and the noise pollution is often serious due to tiny sound or vibration. The harm of noise pollution to the health and daily life of people is increasingly paid attention to, and the problem of how to provide a quiet and comfortable living environment for people through sound insulation of building materials is increasingly concerned, so that the sound insulation function of buildings is gradually improved in various building functions.

In the conventional building materials, a sound insulation effect is obtained mainly by using sound insulation mortar or a sound insulation board. However, the sound insulation mortar is made of wood chip cement-based materials and is applied to buildings, and dry shrinkage cracking occurs due to water volatilization along with cement solidification, or plastic cracking occurs due to the fact that cement is hard and brittle, and the cracking effect of a coating is seriously influenced; to the acoustic celotex board, the foaming acoustic celotex board that adopts to contain the bubble chamber membrane more or mix soundproof fiber's acoustic celotex board, although this type of acoustic material gives sound insulation effectually, but foaming acoustic celotex board self intensity is poor, very easily receives external force and destroys, need do good protective layer to it, and soundproof fiber is mostly the cotton body that glass fiber formed, is harmful and not environmental protection to the human body to the acoustic celotex board most self does not have the adhesive capacity.

Disclosure of Invention

In view of the above, embodiments of the present invention provide a sound-insulating coating material and a sound-insulating building having a good sound-insulating effect, good adhesive strength, and high safety.

In a first aspect, an embodiment of the present application provides a sound insulation coating, which includes the following raw materials in parts by weight:

200-250 parts of water; 60-80 parts of coal slag; 100-120 parts of a filler; 80-100 parts of metal powder; 80-120 parts of aggregate; 60-100 parts of pumice stone particles; 240-250 parts of rubber emulsion; 100-150 parts of reed straw particles; 7.5-9.5 parts of a processing aid; wherein the value range of the density rho of the metal powder is 7.5g/cm³-11.5g/cm³。

According to any embodiment of the first aspect of the present application, the rubber emulsion is selected from one or more of natural rubber emulsion, styrene-butadiene emulsion, butyronitrile emulsion, chloroprene emulsion, styrene-acrylic emulsion and vinyl acetate-ethylene copolymer emulsion; and/or the filler comprises at least one of mica powder and expanded vermiculite powder; and/or the metal powder comprises at least one of iron powder or lead powder.

According to any embodiment of the first aspect of the present application, the processing aid comprises 1.5-2 parts of a thickener; 2-3 parts of a defoaming agent; 4-4.5 parts of a dispersing agent.

According to any one of the embodiments of the first aspect of the present application, the thickening agent comprises a cellulose ether comprising one or more of a hydroxymethyl cellulose ether, a hydroxyethyl cellulose ether; and/or

The defoaming agent comprises one or more of mineral oil and organic silicon; and/or

The dispersant comprises one or more of sodium salt dispersant and ammonium salt dispersant.

According to any embodiment of the first aspect of the present application, the aggregate comprises one or more of river sand, porcelain sand, machine sand.

According to any embodiment of the first aspect of the present application, the coal slag has a particle size of 0.5 mm-3mm; and/or the particle size of the filler is 1000 mesh 2000 mesh; and/or the granularity of the metal powder is 80 meshes-150 meshes; and/or the aggregate has a particle size of 80-150 meshes, and/or the pumice stone particles have a particle size of 0.5 mm-2 mm and/or the reed straw particles have a particle size of 1 mm-3 mm.

According to any embodiment of the first aspect of the present application, the sound-proofing coating further comprises 2-3 parts of a preservative.

In a second aspect, an embodiment of the present application provides a method for preparing a sound-proofing coating, including:

providing a raw material in accordance with the components and component contents contained in the soundproof coating material as described above;

uniformly mixing water and a processing aid to obtain a first mixture;

mixing and stirring the filler and the first mixture uniformly, adding metal powder, aggregate, pumice particles, coal cinder and reed straw particles, and mixing uniformly to obtain a second mixture;

and mixing and stirring the rubber emulsion and the second mixture uniformly to obtain the sound insulation coating.

According to any embodiment of the second aspect of the present application, the method further comprises the step of adding a preservative to the mixture after the step of mixing and stirring the rubber emulsion and the second mixture uniformly to obtain the sound-insulating coating.

A third aspect of the present application provides a sound-deadening building comprising the sound-deadening coating as set forth above.

Compared with the prior art, the method has the following beneficial effects that:

according to the embodiment of the application, the reed particles with the porous structure, the pumice and the coal cinder are added into the coating and are interwoven and bonded together through the rubber emulsion to form the three-dimensional net-shaped structure material with certain strength and toughness, the metal powder is high in density, the coating density can be effectively improved, and the coating is matched with the reed with smaller density, so that the capacity loss of sound waves in the process of spreading from different media can be increased, and the components in the coating act synergistically to achieve a good sound insulation effect. The reed particles greatly prolong the propagation path and time of sound waves in the reed particles, so that the conversion time of sound energy to mechanical energy caused by the vibration of the reed particles by the sound waves is prolonged, the sound wave energy encountering the sound insulation coating is rapidly attenuated, and the reed particles have good sound absorption and noise reduction performance. In addition, sound waves are transmitted to pumice and coal cinder through reed particles, and are rebounded for many times in the transmission process, so that sound energy is converted into mechanical energy and heat energy, and the sound energy is reduced. In addition, each component does not release harmful substances, the safety is high, the bonding strength and the durability are good, and the problems that the sound insulation mortar is easy to fall off and crack, and sound insulation fibers volatilize fine harmful fibers and the like are solved.

Detailed Description

In order to make the application purpose, technical solution and beneficial technical effects of the present application clearer, the present application is further described in detail with reference to the following embodiments. It should be understood that the embodiments described in this specification are only for the purpose of explaining the present application and are not intended to limit the present application.

For the sake of brevity, only some numerical ranges are explicitly disclosed herein. However, any lower limit may be combined with any upper limit to form ranges not explicitly recited; and any lower limit may be combined with any other lower limit to form a range not explicitly recited, and similarly any upper limit may be combined with any other upper limit to form a range not explicitly recited. Also, although not explicitly recited, each point or individual value between endpoints of a range is encompassed within the range. Thus, each point or individual value can form a range not explicitly recited as its own lower or upper limit in combination with any other point or individual value or in combination with other lower or upper limits.

In the description herein, it is to be noted that "more" and "below" are inclusive of the present number and the meaning of "more" of "one or more" is two or more unless otherwise specified.

The above summary of the present application is not intended to describe each disclosed embodiment or every implementation of the present application. The following description more particularly exemplifies illustrative embodiments. At various points throughout this application, guidance is provided through a list of embodiments that can be used in various combinations. In each instance, the list is merely a representative group and should not be construed as exhaustive.

With the continuous development of society, the requirements of people on the quality of life are higher and higher. The harm of noise pollution to the health and daily life of people is increasingly paid attention to, and the problem of how to provide a quiet and comfortable living environment for people through sound insulation of building materials is increasingly concerned, so that the sound insulation function of buildings is gradually improved in various building functions.

In the conventional building materials, a sound insulation effect is obtained mainly by using sound insulation mortar or a sound insulation board. However, the sound insulation mortar is a wood chip cement-based material applied in buildings, and dry shrinkage cracking occurs due to water volatilization along with cement solidification, or plastic cracking occurs due to the fact that cement is hard and brittle, and the cracking effect of a coating is seriously influenced; to the acoustic celotex board, the foaming acoustic celotex board that adopts to contain the bubble chamber membrane more or mix soundproof fiber's acoustic celotex board, although this type of acoustic material gives sound insulation effectually, but foaming acoustic celotex board self intensity is poor, very easily receives external force and destroys, need do good protective layer to it, and soundproof fiber is mostly the cotton body that glass fiber formed, is harmful and not environmental protection to the human body to the acoustic celotex board most self does not have the adhesive capacity.

In view of this, the inventors propose the technical solutions described in the embodiments of the present application through a series of experimental studies.

Sound-insulating coating

The sound insulation coating provided by the embodiment of the application comprises the following raw materials in parts by weight:

200-250 parts of water; 60-80 parts of coal slag; 100-120 parts of a filler; 80-100 parts of metal powder; 80-120 parts of aggregate; 60-100 parts of pumice particles; 240-250 parts of rubber emulsion; 100-150 parts of reed straw particles; 7.5-9.5 parts of processing aid, wherein the density of the metal powderThe value range of rho is 7.5g/cm³-11.5g/cm³。

The reed is a biological base material, is environment-friendly and low in cost, can reduce the generation of agricultural wastes and accords with the concept of green cycle development, the reed straw particles have certain elasticity and the stems have hollow structures, and the reed straw particles vibrating the elasticity in sound waves can offset part of sound wave capability and simultaneously the holes of the particles enable the sound waves to rebound repeatedly in the structures to consume the sound wave capability. The reed particles in the embodiments of the present application are 100 to 150 parts, and it is understood that the reed particles are 100 parts, 110 parts, 120 parts, 130 parts, 140 parts, or 150 parts. The mass fraction of the reed particles can be any combination range of the above numerical values.

The particles of the particle materials such as pumice, coal slag and the like or the particles have more gaps and loose structure, have good sound absorption and sound insulation effects, and can not release harmful substances. The pumice stone particles in the present embodiment are 60 to 100 parts, and it is understood that the pumice stone particles are 60 parts, 70 parts, 80 parts, 90 parts, or 100 parts. The mass fraction of the pumice stone particles may also be in any combination of the above values.

The rubber emulsion is water-based and environment-friendly, has the characteristics of good water resistance and alkali resistance and strong bonding force, and is wide in application range. When meeting the impact, when the impact meets the multilayer structure that rubber emulsion bondd in the coating that gives sound insulation in the transmission process, the elasticity bonding can vibrate low frequency, and multilayer structure material in the coating and other high density granule can produce the vibration to high frequency in the middle of the high frequency for the sound wave energy obtains dissipation and takes place the attenuation of great degree, thereby can insulate the transmission of impact on low frequency and medium and high frequency effectively, especially play the sound insulation effect to the low frequency.

The rubber emulsion in the present embodiment is 240 to 250 parts, and it is understood that the rubber emulsion is 240 parts, 242 parts, 244 parts, 246 parts, 248 parts, or 250 parts. The mass portion of the rubber emulsion may be in any combination range of the above values.

The transmission of acoustic energy is essentially the transmission of vibration amplitude, and the greater the difference in density between the two media, the greater the loss of acoustic energy as the sound propagates across the media. The sound-insulating effect of a sound-insulating material is directly determined by the density of the material. The thickness is the same, and the larger the density is, the larger the sound insulation quantity is. This application adopts the great metal powder of density can effectively improve the density of coating, and then strengthens the syllable-dividing effect of coating.

According to the embodiment of the application, the metal powder is high in density, the coating density can be effectively improved, and the capacity loss of sound waves in the process of transmission from different media is increased. The metal powder is 80-100 parts in this application, it being understood that the metal powder is 80 parts, 85 parts, 90 parts, 95 parts or 100 parts. The mass fraction of the metal powder may be in any combination of the above values.

According to the embodiment of the application, reed particles with a porous structure, pumice and coal cinder are added into the coating and are interwoven and bonded together through the rubber emulsion to form a three-dimensional net-shaped structure material with certain strength and toughness, and all components in the coating act synergistically to achieve a good sound insulation effect. The reed particles greatly prolong the propagation path and time of sound waves in the reed particles, so that the conversion time of sound energy to mechanical energy caused by the vibration of the reed particles by the sound waves is prolonged, the sound wave energy encountering the sound insulation coating is rapidly attenuated, and the reed particles have good sound absorption and noise reduction performance. In addition, the sound waves are transmitted to pumice and coal cinder through reed particles, and are rebounded for many times in the transmission process, so that the sound energy is converted into mechanical energy and heat energy, and the sound energy is reduced. The metal powder has high density, can effectively improve the coating density, and can increase the capacity loss of sound waves in the process of propagation from different media by matching with the reed with lower density.

According to the embodiment of the application, the metal powder can be at least one of iron powder and lead powder.

The sound-insulating coating is excellent in sound absorption and noise reduction performance, has good bonding strength and durability, and overcomes the defects that sound-insulating mortar is easy to fall off and crack, sound-insulating fibers volatilize fine harmful fibers and the like.

In order to fill the gaps of the paint film, increase the toughness and vibration sound insulation of the paint film and adjust the rheological property of the product, the filler, such as mica powder, is added into the paint in the embodiment of the application, and the adding amount of the filler is 100-120 parts. It is understood that the filler is 100 parts, 105 parts, 110 parts, 115 parts, or 120 parts. The mass fraction of the filler may be in any combination of the above values.

According to the embodiment of the application, the aggregate is added into the sound insulation coating and is used for being compounded with the filler to fill the gaps of the paint film, and the effect of reducing the shrinkage of the paint film can also be achieved. The addition amount of the aggregate is 80-120 parts. It is understood that the filler is 80 parts, 90 parts, 100 parts, 110 parts, or 120 parts. The mass fraction of the filler may be in any combination of the above values.

In some embodiments, the rubber emulsion is selected from one or more of natural rubber emulsion, styrene-butadiene emulsion, nitrile-butadiene emulsion, neoprene emulsion, styrene-acrylic emulsion, and vinyl acetate-ethylene copolymer emulsion. Preferably, the butylbenzene emulsion is alkali-resistant butylbenzene emulsion with glass transition temperature of-9 ℃, and can bond all components and improve water resistance of the coating.

In some embodiments, the filler comprises at least one of mica powder and expanded vermiculite powder. The filler is favorable for improving the consistency of the sound-insulation coating, can fill the coating gaps, increase the toughness and vibration sound insulation property of the coating, and adjust the rheological property of the product, so that the sound-insulation coating is not easy to cause the phenomena of hollowing and cracking when in use. In addition, the mica and the expanded vermiculite are of flaky structures, and the filler powder formed by the mica or the expanded vermiculite of the flaky structures is favorable for improving the sound insulation effect of the coating.

In some embodiments, the processing aid comprises 1.5 to 2 parts of a thickener; 2-3 parts of a defoaming agent; 4-4.5 parts of a dispersing agent.

According to the embodiment of the application, the thickening agent can improve the rheological property of the coating, the defoaming agent can reduce bubbles generated by mixing products, and the dispersing agent can ensure the dispersion stability of each component particle in the coating.

In the sound-proofing coating material of the embodiment of the present application, the kind of the thickener is not particularly limited, and may be selected according to actual needs. In some embodiments, the thickening agent comprises a cellulose ether comprising one or more of a hydroxymethyl cellulose ether, a hydroxyethyl cellulose ether.

In the sound-proofing coating material of the embodiment of the present application, the type of the defoaming agent is not particularly limited, and may be selected according to actual needs. In some embodiments, the anti-foaming agent comprises one or more of mineral oils, silicones.

In the sound-proofing coating material according to the embodiment of the present invention, the kind of the dispersant is not particularly limited, and may be selected according to actual needs. In some embodiments, the dispersant comprises one or more of a sodium salt dispersant, an ammonium salt dispersant.

In the sound-insulating coating material according to the embodiment of the present application, the kind of the aggregate is not particularly limited, and may be selected according to actual needs. In some embodiments, the aggregate comprises one or more of river sand, porcelain sand, machine-made sand.

In some embodiments, the coal slag has a particle size of 0.5 mm-3 mm.

In some embodiments, the filler has a particle size of 1000 mesh to 2000 mesh.

In some embodiments, the metal powder has a particle size of 80 mesh to 150 mesh.

In some embodiments, the aggregate has a particle size of 80 mesh to 150 mesh.

In some embodiments, the pumice stone particles have a particle size of 0.5 mm-2 mm.

In some embodiments, the reed straw particles have a particle size of 1 mm-3 mm.

According to the embodiment of the application, each component granularity or particle diameter is too big, can lead to the coating structure loose, the density reduces, influence the syllable-dividing effect of coating, influence the cladding effect of rubber emulsion simultaneously, and each component granularity or particle diameter undersize, can lead to the coating structure closely knit, can not form three-dimensional network structure, rebound in the sound transmission process has been reduced, and then can also influence syllable-dividing effect, consequently, the average particle diameter control of each component in the syllable-dividing coating is in suitable scope, be favorable to rubber emulsion to bond the cladding to each component person, form the three-dimensional network structure material that has certain intensity and toughness, provide sound insulation performance for the syllable-dividing coating from this.

In order to inhibit the decomposition of organic components of the product by microorganisms, in some embodiments, a preservative is added in an amount of 2-3 parts. It is understood that the preservative is 2 parts, 2.2 parts, 2.4 parts, 2.6 parts, 2.8 parts, or 3 parts. The mass portion of the preservative may be any combination range of the above values.

The kind of the preservative is not particularly limited and may be selected according to actual needs. Illustratively, preservatives include one or more of the carson class of preservatives; the sterilizing performance of the kason preservative has broad spectrum, can kill algae, fungi and bacteria, and has penetrating effect on mucus, so that microorganisms treated by the kason preservative cannot synthesize enzyme and secrete substances with adhesiveness and capable of generating a biological film before cell death, and the sterilization is relatively thorough.

Preparation method of sound insulation coating

In a second aspect, embodiments of the present application provide a method for preparing a soundproof coating, including:

uniformly mixing water and a processing aid to obtain a first mixture;

mixing and stirring filler and the first mixture uniformly, adding metal powder, aggregate, pumice particles, coal cinder and reed straw particles, and mixing uniformly to obtain a second mixture;

It is understood that a disperser can be used for mixing in each step, and the rotating speed and mixing time of the disperser can be set according to the types and addition amounts of the components, so as to ensure that the components can be sufficiently mixed. Illustratively, in the step of obtaining the first mixture, the rotating speed is 500r/min, and the stirring time is 2min; in the step of uniformly mixing and stirring the filler and the first mixture, the rotating speed is 1500r/min, and the stirring time is 5 min; in the step of adding metal powder, aggregate, pumice stone particles, coal cinder and reed straw particles and uniformly mixing to obtain a second mixture, the rotating speed is 800r/min, and the stirring time is 20min; in the step of uniformly mixing and stirring the butylbenzene emulsion and the second mixture, the rotating speed is 800r/min, and the stirring time is 10 min.

According to the preparation method of the sound insulation coating, the process is simple, the components are interwoven and bonded together to form the three-dimensional net structure material with certain strength and toughness, and the components have synergistic effect to achieve a good sound insulation effect.

In some embodiments, the method further comprises the step of adding a preservative to the mixture after the step of mixing the rubber emulsion and the second mixture uniformly and uniformly, so as to obtain the sound-proof coating. Illustratively, in the step of adding the preservative and mixing uniformly, the stirring time is 5min.

Sound insulation building

In a third aspect, embodiments of the present application provide a sound-deadening building including the sound-deadening coating as set forth above.

Specifically, the sound insulation building may be a sound insulation board. It can be understood that, with the rapid development of the assembly type building in our country, for example, a large amount of field operation work in the traditional construction mode is transferred to a factory, and building members and accessories (such as floor slabs, wall slabs, stairs, balconies, etc.) are processed and manufactured in the factory, the demand of the prefabricated slabs is rapidly increased, and the sound insulation coating can be coated on the slabs in advance to form sound insulation slabs for standby.

The sound insulation building can also be buildings, enclosing walls, bridges, tunnels and other structures coated with sound insulation coatings.

Examples

The present disclosure is more particularly described in the following examples that are intended as illustrative only, since various modifications and changes within the scope of the present disclosure will be apparent to those skilled in the art. Unless otherwise stated, all parts, percent ratios, and ratio values reported in the following examples are on a weight basis, and all reagents used in the examples are commercially available or synthetically obtained according to conventional methods and can be used directly without further processing, and the instruments used in the examples are commercially available.

Example 1

The sound insulation coating is prepared from the following raw materials in parts by weight:

200 parts of deionized water;

1.5 parts of hydroxymethyl cellulose ether;

2 parts of a silicone defoaming agent (E256, australian Han Co., ltd., beijing Oriental);

4 parts of sodium salt dispersant (Guangzhou city kurtosis chemical Co., ltd., W58);

60 parts of coal slag with the particle size of 0.5 mm;

100 parts of mica powder with the granularity of 2000 meshes;

80 parts of lead powder with the granularity of 150 meshes;

80 parts of river sand with the granularity of 150 meshes;

60 parts of pumice particles with the particle size of 0.5 mm;

100 parts of reed straw particles with the particle size of 1mm.

240 parts of styrene-butadiene emulsion (shanghai special ma chemicals limited, 2186);

and 2 parts of a preservative.

Example 2

210 parts of deionized water;

1.8 parts of hydroxymethyl cellulose ether;

2.5 parts of mineral oil defoaming agent (Jiangsu McGao architecture science and technology Co., ltd., ZJ-D130);

4.2 parts of a sodium salt dispersing agent;

65 parts of coal cinder with the particle size of 1mm;

110 parts of mica powder with the granularity of 1200 meshes;

85 parts of lead powder with the granularity of 120 meshes;

110 parts of porcelain sand with the granularity of 120 meshes;

70 parts of pumice particles with the particle size of 0.5 mm-2 mm;

120 parts of reed straw particles with the particle size of 1mm.

245 parts of neoprene emulsion (Shanna synthetic rubber, ltd., SNL 511).

And 2 parts of a preservative.

Example 3

230 parts of deionized water;

1.6 parts of hydroxyethyl cellulose ether;

2.6 parts of mineral oil defoaming agent;

4.5 parts of ammonium salt dispersant (Dow chemical, 1124);

75 parts of coal cinder, wherein the particle size is 1.5mm;

105 parts of mica powder with the granularity of 1600 meshes;

90 parts of lead powder with the granularity of 100 meshes;

120 parts of river sand with the particle size of 100 meshes;

80 parts of pumice particles with the particle size of 1.5mm;

140 parts of reed straw particles with the particle size of 1.5mm.

246 parts of styrene-butadiene emulsion (shanghai special ma chemicals limited, 2186);

2.6 parts of a preservative.

Example 4

245 parts of deionized water;

2 parts of hydroxyethyl cellulose ether;

3 parts of an organic silicon defoaming agent;

4.3 parts of an ammonium salt dispersant;

78 parts of coal cinder with the particle size of 2mm;

115 parts of vermiculite powder with the granularity of 1200 meshes

95 parts of lead powder with the granularity of 80 meshes;

100 parts of machine-made sand with the particle size of 80 meshes;

95 parts of pumice particles with the particle size of 2mm;

150 parts of reed straw particles with the particle size of 2mm.

248 parts of styrene-butadiene emulsion (Shanghai Xin special ma chemical Co., ltd., 2186);

2.5 parts of preservative.

Example 5

The metal powder was iron powder as compared with example 1.

Comparative example 1

Compared with example 1, no coal cinder was added.

Comparative example 2

In contrast to example 1, no pumice stone particles were added.

Comparative example 3

Compared with example 1, reed straw particles were not added.

Comparative example 4

In comparison to example 1, the reed straw particles had a particle size of 0.5 mm.

Comparative example 5

Compared with example 1, the granule size of the reed straw is 5mm.

Comparative example 6

In comparison with example 1, no metal powder was added.

Test section

The soundproof coatings in example 1~5 and comparative example 1~6 described above were subjected to the relevant performance test, test method:

(1) Impact sound improvement amount test: according to GB/T19889.8-2006 Acoustic construction and construction component Sound insulation measurement, part 8: laboratory measurement testing of the impact sound improvement of heavy standard floor coverings required testing to be performed according to the specifications of the test.

(2) The compressive strength is in accordance with GB/T5486-2001; the adhesive strength of the putty layer is tested according to JCT 298-2010 operation, and the curing condition is 23 ℃ and 50% humidity.

The test results of the soundproof coatings in example 1~5 and comparative example 1~6 are shown in table 1.

TABLE 1 test results for example 1~5 and comparative example 1~6

From the test results in table 1, the compression strength and the adhesion strength to a putty layer of the sound insulation coating of example 1~5 are high after 14 days, the impact sound insulation effect of a coating with a thickness of 5mm on a floor is reduced to less than 68dB in decibel compared with the original sound wave, comparative examples 1 to 3 lack coal cinder, pumice particles and reed straw particles respectively, and the formed three-dimensional mesh structure is poor, so the sound insulation effect of the coating is poor, the particle size of the reed particles of comparative example 4 is small, the adhesion strength to the putty layer is improved, but the formed three-dimensional mesh structure is dense, the rebound of sound in the structure is influenced, the sound insulation effect is not improved along with the improvement of the adhesion strength, meanwhile, the price of the reed particles with small particle size is high, the cost is improved, the particle size of the reed particles of comparative example 5 is large, the coating effect of the rubber emulsion is influenced, the formed three-dimensional mesh structure is loose, the density of the coating is reduced, and the sound insulation effect is not obviously improved, the components of comparative example 6 lack metal powder with high density, so that the density of the coating is lower than that the density of example 1 is lower than that of the example 1. Therefore, the sound insulation coating provided by the embodiment of the application has high bonding strength and excellent sound insulation effect.

To sum up, reed particles, pumice and cinder with porous structures are added into the coating, and are interwoven and bonded together through rubber emulsion to form a three-dimensional net-shaped structure material with certain strength and toughness, so that the metal powder is high in density, the coating density can be effectively improved, and the loss of the sound wave in the process of propagating from different media can be increased by matching with the reed with low density. The components in the coating have synergistic effect, so that the coating achieves good sound insulation effect, does not release harmful substances, and has high safety, good bonding strength and good durability.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or substitutions within the technical scope of the present application, and these modifications or substitutions should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. The sound insulation coating is characterized by comprising the following raw materials in parts by weight:

200-250 parts of water;

60-80 parts of coal slag, wherein the particle size of the coal slag is 0.5 mm-3mm;

100-120 parts of filler, wherein the granularity of the filler is 1000 meshes-2000 meshes;

80-100 parts of metal powder, wherein the granularity of the metal powder is 80-150 meshes;

80-120 parts of aggregate, wherein the particle size of the aggregate is 80-150 meshes;

60-100 parts of pumice particles, wherein the particle size of the pumice particles is 0.5 mm-2 mm;

240-250 parts of rubber emulsion;

100-150 parts of reed straw particles, wherein the particle size of the reed straw particles is 1 mm-3mm;

7.5-9.5 parts of a processing aid;

wherein the value range of the density rho of the metal powder is 7.5g/cm³-11.5g/cm³。

2. The sound-insulating coating of claim 1, wherein the rubber emulsion is one or more selected from the group consisting of natural rubber emulsion, styrene-butadiene emulsion, nitrile-butadiene emulsion, neoprene emulsion, styrene-acrylic emulsion and vinyl acetate-ethylene copolymer emulsion; and/or

The metal powder comprises at least one of iron powder or lead powder; and/or

The filler comprises at least one of mica powder and expanded vermiculite powder.

3. The sound-proofing coating of claim 1, wherein the processing aid comprises 1.5-2 parts of a thickener; 2-3 parts of a defoaming agent; 4-4.5 parts of a dispersing agent.

4. The sound-proofing coating of claim 3 wherein said thickener comprises a cellulose ether comprising one or more of a hydroxymethyl cellulose ether and a hydroxyethyl cellulose ether; and/or

The dispersant comprises one or more of a sodium salt dispersant and an ammonium salt dispersant.

5. The sound-proofing coating of claim 1, wherein the aggregate comprises one or more of river sand, porcelain sand, and machine-made sand.

6. The sound-proofing coating of claim 1, further comprising 2-3 parts of a preservative.

7. A preparation method of a sound insulation coating is characterized by comprising the following steps:

the soundproof coating according to any one of claims 1 to 5, containing components and component content providing raw materials;

uniformly mixing water and a processing aid to obtain a first mixture;

8. The method for preparing a soundproof paint according to claim 7, further comprising adding a preservative to the mixture after the step of mixing the rubber emulsion with the second mixture and stirring the mixture uniformly, and mixing the mixture uniformly to obtain the soundproof paint.

9. An acoustical insulation building comprising the acoustical insulation coating of any one of claims 1-5.