CN114350213A - Single-component sound insulation coating, preparation method thereof and single-component sound insulation coating - Google Patents

Abstract

The invention relates to a monocomponent sound-insulation coating and a preparation method thereof, and the monocomponent sound-insulation coating, wherein cellulose is added into water for thickening, rubber powder, polypropylene fiber and modified vermiculite are added, styrene-acrylic emulsion, acrylic emulsion and silica aerogel are added in a matching manner, and auxiliary agents and fillers are added, so that the obtained monocomponent sound-insulation coating has a good adhesion effect with a base surface, has the functions of reducing decibel, insulating sound and preserving heat, and can meet the standard of being less than or equal to 75dB in the relevant regulations in the national standard GB50118-2010 of civil building sound insulation design Specification only by constructing with the thickness of 3-7 mm.

Description

Single-component sound insulation coating, preparation method thereof and single-component sound insulation coating

Technical Field

The invention relates to the technical field of building materials, in particular to a single-component sound-insulation coating, a preparation method thereof and a single-component sound-insulation coating.

Background

Along with the improvement of living standard, people also attach more and more importance to the sound insulation performance of building, and building noise includes two kinds of forms of impact sound and air sound, and the noise that propagates through the floor is mostly impact sound. The impact sound of a building is mainly the noise generated by the vibration generated by the collision of an object with a building structure, and the vibration is transmitted along the building structure and radiated to the surrounding air. In general buildings, a floor is a main building structure generating impact sound, such as door and window switch impact, object falling on the ground, seat dragging, child playing and heel knocking when a person walks on the floor, impact noise is generated.

The floor sound insulation is divided into sound insulation of air transmission and sound insulation generated after physical impact. For a common 120mm cast-in-place concrete floor, the sound barrier of air transmission can reach the relevant national standard, but the sound barrier effect generated after physical impact is poor, and generally speaking, the sound pressure level of impact sound is about 82 dB.

The on-site detection value of the impact sound insulation performance of the floor slab and the partition wall firstly meets the design requirement, and when the design is not specified, the standard that the relevant specification in the existing national standard 'civil building sound insulation design specification' GB50118-2010 is less than or equal to 75dB is met, but the existing sound insulation coating has poor sound insulation performance and needs to be coated with larger thickness.

Disclosure of Invention

Based on the above, a need exists for a one-component sound-proofing coating, a preparation method thereof and a one-component sound-proofing coating.

The technical scheme for solving the technical problems is as follows: a single-component sound insulation coating comprises the following components in parts by mass:

in one embodiment, the adjuvant comprises the following components in parts by mass:

in one embodiment, the polypropylene fibers have a length of 2mm to 4 mm.

In one embodiment, the modified vermiculite is processed by the following steps:

providing vermiculite and an emulsion;

and spraying the emulsion onto the vermiculite, uniformly stirring, and drying to obtain the modified vermiculite.

In one embodiment, the particle size of the modified vermiculite is 80 mesh to 200 mesh.

In one embodiment, the styrene-acrylic emulsion has a solids content of 60% to 70%.

In one embodiment, the acrylic emulsion has a solids content of 45% to 50%.

In one embodiment, the silica aerogel has a particle size of 20 mesh to 50 mesh.

The invention also provides a preparation method of the single-component sound-insulation coating, which comprises the following steps:

mixing and stirring 30-36 parts of water, 0.1-0.25 part of cellulose, 0.1-0.4 part of preservative and 0.1-0.4 part of multifunctional additive to obtain a first mixture;

slowly adding 10-30 parts of rubber powder, 1-3 parts of polypropylene fiber and 3-8 parts of modified vermiculite into the first mixture, and stirring to obtain a second mixture;

adding 15-23 parts of styrene-acrylic emulsion, 2-5 parts of acrylic emulsion and 0.3-0.7 part of film-forming assistant into the second mixture, and stirring to obtain a third mixture;

slowly adding 1 to 3 parts of silicon dioxide aerogel, 5 to 11 parts of quartz sand, 14 to 20 parts of heavy calcium powder and 0.1 to 0.3 part of thickening agent into the third mixture, and stirring to obtain the single-component sound insulation coating.

The present invention also provides a one-component acoustical coating comprising the one-component acoustical coating described in any of the above embodiments.

The invention has the beneficial effects that: the monocomponent sound-insulation coating provided by the invention is prepared by adding cellulose into water for thickening, adding rubber powder, polypropylene fiber and modified vermiculite, adding styrene-acrylic emulsion, acrylic emulsion and silica aerogel in a matching manner, and adding an auxiliary agent and a filler, has a good adhesion effect with a base surface, has the functions of reducing decibel, insulating sound and preserving heat, and can meet the standard of being less than or equal to 75dB in the relevant regulations in the national standard 'civil building sound-insulation design Specification' GB50118-2010 by constructing the monocomponent sound-insulation coating with the thickness of 3-7 mm.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a schematic flow chart illustrating a method for preparing a one-component soundproof coating according to an embodiment of the present invention.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In one embodiment, a one-component sound-proofing coating comprises the following components in parts by mass:

wherein the auxiliary agent comprises the following components in parts by mass:

in this embodiment, the one-component soundproof coating material includes: water, cellulose, a preservative, a multifunctional additive, rubber powder, polypropylene fiber, modified vermiculite, styrene-acrylic emulsion, a film-forming additive, silicon dioxide aerogel, quartz sand, heavy calcium carbonate powder and a thickening agent. Wherein, each 100 weight parts of the single-component sound-proof coating comprises 30 to 36 parts of the water, each 100 weight parts of the single-component sound-proof coating comprises 0.1 to 0.25 part of the cellulose, each 100 weight parts of the single-component sound-proof coating comprises 0.1 to 0.4 part of the preservative, each 100 weight parts of the single-component sound-proof coating comprises 0.1 to 0.4 part of the multifunctional auxiliary agent, each 100 weight parts of the single-component sound-proof coating comprises 10 to 30 parts of the rubber powder, each 100 weight parts of the single-component sound-proof coating comprises 1 to 3 parts of the polypropylene fiber, each 100 weight parts of the single-component sound-proof coating comprises 3 to 8 parts of the modified vermiculite, each 100 weight parts of the single-component vermiculite sound-proof coating comprises 15 to 23 parts of the styrene-acrylic emulsion, the single-component sound-proof coating comprises, by weight, 100 parts of the acrylic emulsion, 100 parts of the single-component sound-proof coating comprises 0.3 part to 0.7 part of the film-forming aid, 100 parts of the single-component sound-proof coating comprises 1 part to 3 parts of the silica aerogel, 100 parts of the single-component sound-proof coating comprises 5 parts to 11 parts of the quartz sand, 100 parts of the single-component sound-proof coating comprises 14 parts to 20 parts of the heavy calcium powder, and 100 parts of the single-component sound-proof coating comprises 0.1 part to 0.3 part of the thickening agent.

In the embodiment, the cellulose has the characteristics of no toxicity, no odor and no pollution, and simultaneously has good toughness, dispersibility and chemical stability, and can play a role in thickening and cracking, the functional auxiliary agent can be HY-95 multifunctional auxiliary agent, in particular an alcamine compound, can effectively control the pH value, improve the storage stability of the emulsion paint, improve the scrub resistance and water resistance of the paint, and can also improve the performance of the thickening agent, stabilize the viscosity of the system, the rubber powder has a spatial three-dimensional net structure, not only can effectively block the transmission of sound, but also has good heat insulation performance, the length of the polypropylene fiber is 2mm-4mm, the polypropylene fiber has good compactness and a cracking resistance, can play a role in lapping among the components, and can well connect the formed coatings into a whole, the modified vermiculite is coated with the emulsion, and is dried to expand, so that the size of the internal microporous structure of the vermiculite can be increased, the sound is conducted to the inside of the modified vermiculite, and the modified vermiculite is repeatedly blocked and absorbed by the porous structure, so that the decibel of the sound can be effectively reduced, and the sound energy absorption performance is better.

In the embodiment, the styrene-acrylic emulsion has a solid content of 60-70%, the acrylic emulsion has a solid content of 45-50%, the rigid emulsion and the flexible emulsion are compounded, so that the adhesive force on a base surface can be improved while the flexibility is good, the film-forming assistant can improve the film-forming mechanism of the emulsion and help film formation, the film-forming assistant volatilizes after film formation and does not influence the characteristics of a coating film, the silica aerogel has incomparable heat insulation effect, high porosity and high specific surface area, can improve the acoustic performance, has good dispersibility in aqueous and solvent adhesives, can play roles of thickening, thixotropic and reinforcing, is a low-density and nontoxic heat insulation material, can play good heat insulation and sound insulation effects, and the quartz sand and the heavy calcium powder can form a good framework structure, the compactness of the single-component sound insulation coating can be improved, the compactness of the single-component sound insulation coating is improved, the waterproof and sound insulation effects can be well achieved, the heat insulation effect is achieved, the thickening agent prevents the sagging phenomenon in construction, and the coating can be endowed with excellent mechanical performance and storage stability.

In the above embodiment, the cellulose is added into water for thickening, the rubber powder, the polypropylene fiber and the modified vermiculite are added, the styrene-acrylic emulsion, the acrylic emulsion and the silica aerogel are added in cooperation with the rubber powder, the polypropylene fiber and the modified vermiculite, and the auxiliary agent and the filler are added, so that the obtained monocomponent sound insulation coating has a good attachment effect with a base surface, has the functions of reducing decibels, insulating sound and preserving heat, has different particle sizes of the rubber powder, the modified vermiculite and the silica aerogel, has different sizes of internal microporous structures, is uniformly distributed with the rubber powder, the modified vermiculite and the silica aerogel, is lapped through the polypropylene fiber, and can fill gaps among the quartz sand and the heavy calcium carbonate powder to form a framework, can form a multi-gradient microporous structure, and has the advantages of tight connection among components with the microporous structure, namely good framework compactness and good film-forming performance, the structural integrity formed between the components is good. Therefore, sound conduction needs to pass through a plurality of microporous structures with different apertures, the sound transmission speed is reduced, the amplitude of sound waves can be effectively reduced, the sound waves are gradually converted into heat energy when air inside the microporous structures vibrates, the sound absorption effect can be achieved, meanwhile, part of sound can be blocked and isolated by a compact structure, and the sound insulation effect is achieved, so that when the single-component sound insulation coating is used for sound insulation of building interior walls, the impact sound decibel of the building can be obviously reduced, and the standard which is less than or equal to 75dB in the relevant regulation in the civil building sound insulation design specification GB50118-2010 of the existing national standard can be met only by constructing the single-component sound insulation coating with the thickness of 3-7 mm.

In one embodiment, the modified vermiculite is processed by the following steps: the preparation method comprises the steps of providing vermiculite and emulsion, spraying the emulsion onto the vermiculite, uniformly stirring, drying to obtain modified vermiculite, coating the surface of the vermiculite with the emulsion, sealing the microporous structure of the vermiculite, and preventing other components from entering the interior of the modified vermiculite, so that the modified vermiculite has better sound insulation and heat insulation effects.

In one embodiment, the modified vermiculite is processed by the following steps: providing vermiculite and emulsion according to the weight part ratio of 7-8:1, adding water into the emulsion according to the weight part ratio of 1:1 for dilution to obtain diluted emulsion, spraying the diluted emulsion onto the vermiculite, uniformly stirring, and drying for 12-72 h to obtain the particle-covered modified vermiculite. Specifically, the particle size of the vermiculite is 80-200 meshes, the particle size of the used vermiculite is uniform, the vermiculite is of a laminated structure and has the characteristics of small volume weight, low expansibility, low thermal conductivity and good electrical insulation, so that the vermiculite has good sound insulation performance, good heat insulation performance, fire resistance and freezing resistance, is stable in chemical property, non-toxic, odorless and free of side effect, is safe and pollution-free when being used for building materials, and can play a good sound insulation and heat insulation effect.

In the embodiment, dried vermiculite and emulsion are mixed firstly, so that the emulsion is uniformly coated on the surface of the vermiculite, the emulsion can form a film structure on the surface of the vermiculite and is used for sealing a microporous structure of the vermiculite, the modified vermiculite after being coated with particles has better water resistance, other components are prevented from permeating inwards into the vermiculite to block the microporous structure, the water absorption capacity can be reduced, the unit volume of the modified vermiculite is reduced, and air vibration in micropores is caused when sound waves enter the surface of the vermiculite.

In a better embodiment, the emulsion is used for fully sealing the microporous structure of the vermiculite according to the weight part ratio of 1:7.5, so that water can be prevented from permeating inwards to the interior of the modified vermiculite to block the microporous structure, and meanwhile, other components can be tightly bonded with the modified vermiculite by the emulsion, so that the emulsion has stronger mechanical strength. If the weight fraction of the emulsion is too small, the microporous structure of the vermiculite cannot be fully sealed, water can enter the microporous structure of the modified vermiculite when the emulsion is mixed with the components to influence the sound insulation and heat preservation performance of the modified vermiculite, and if the weight fraction of the emulsion is too large, the content of the vermiculite in unit volume is small, so that the sound absorption effect cannot be effectively achieved. Therefore, in the embodiment, the vermiculite and the emulsion are mixed according to the weight part ratio of 7.5:1, and the emulsion is diluted by adding water according to the proportion of 1:1, so that the surface of the vermiculite can be fully coated, and meanwhile, the monomer has a large vermiculite content in volume, and better sound insulation and heat preservation effects can be achieved. Further, the diluted emulsion is sprayed onto the vermiculite, is uniformly stirred and then is dried for 24-36 hours, so that the emulsion on the surface of the vermiculite can be fully dried, and meanwhile, the internal microporous structure of the modified vermiculite after being coated with particles can be fully expanded, so that the modified vermiculite has better sound insulation and heat insulation performance, and the surface of the modified vermiculite can be prevented from being chapped, and other components can enter the modified vermiculite.

In a comparative example, vermiculite is replaced by hollow glass beads which are high-quality sound insulation materials, the hollow glass beads are novel materials which are developed in recent years and have wide application and excellent performance, the hollow spheres with the main granularity of 10-250 micrometers and the wall thickness of 1-2 micrometers have the advantages of light weight, low heat conduction, high strength, good chemical stability and the like, and have obvious effects of weight reduction, sound insulation and heat insulation.

In one embodiment, the surface tension of the vermiculite can be reduced due to the fact that the modified vermiculite is coated with the latex formed by the emulsion, when the modified vermiculite is mixed with the rubber powder, the quartz sand, the coarse whiting powder and the silica aerogel, other components can permeate the latex on the surface of the modified vermiculite, so that the components and the modified vermiculite are uniformly dispersed, floating and layering of the vermiculite and other components during mixing due to smooth and dense surface of the vermiculite are avoided, the bonding strength of the components can be improved, the modified vermiculite is regularly distributed in layers in the components, and the mechanical strength of the single-component sound insulation coating can be improved. Further, the particle size of the silicon dioxide aerogel is 20 meshes to 50 meshes, the particle size of the used silicon dioxide aerogel is uniform, the modified vermiculite is matched with the silicon dioxide aerogel with high pores and low density, the heat preservation, insulation and sound insulation effects can be further improved, and the modified vermiculite and the silicon dioxide aerogel are safe and pollution-free when used for building materials and can play a good synergistic effect.

In one embodiment, the rubber powder has viscoelasticity, in the process of causing resonance by sound waves, chain-shaped macromolecules of the rubber are stressed, the movement of the chain-shaped macromolecules needs to overcome the internal friction resistance between chain segments, the deformation is usually delayed and the stress changes, and a large amount of energy needs to be consumed, so that the kinetic energy can be converted into heat energy, the damping effect is realized, the amplitude of sound source sound waves can be reduced, and the sound insulation and noise reduction effects are achieved. The thixotropy is larger, the hysteresis loss generated in dynamic strain is increased along with the increase of the contact area, and the damping property is increased along with the increase of the contact area. Further, fill modified vermiculite can be when improving rubber powder's damping characteristic, can also reduce the dependence to the temperature in rubber creep and the performance, the damping effect has been improved in the temperature and the frequency range of broad, thereby reduce sound propagation speed at silica aerogel, when making the noise be in the sound wave transmission speed that hangs down, rubber powder can also effectively reduce the amplitude of sound wave, and by being turned into heat energy gradually when arousing the inside air vibration of the porous structure of the many gradients that the three formed, can play the effect of inhaling the sound, the three is compound can also play synergistic effect, can obviously strengthen rubber powder's damping characteristic, can further play the effect of sound insulation.

In a better embodiment, the rubber powder is 15 to 25 parts by weight, the silica aerogel is 1 to 2 parts by weight, the modified vermiculite is 5 to 8 parts by weight, the rubber powder has a spatial three-dimensional network structure, the silica aerogel has high porosity and high specific surface area, the modified vermiculite has rich microporous structures inside, the content of the rubber powder is too much, the free mobility of rubber molecular chain segments is reduced, the static rigidity is increased, the swelling degree is reduced, the damping is reduced, the content of the rubber powder is too little, the rubber powder cannot effectively play a sound insulation effect on sound sources, the content of the modified vermiculite is too much, the expanded modified vermiculite is easy to be layered when being mixed with other components, the film forming performance of the monocomponent sound insulation coating is influenced, and the content of the modified vermiculite is too little, the modified vermiculite with the monomer volume has fewer micropores, cannot effectively separate and absorb sound waves of a sound source, has poor sound absorption effect, has excessive content of silica aerogel, can play a good thickening and reinforcing effect, reduces the damping coefficient of rubber due to poor dispersion, and influences the bonding property of the single-component sound insulation coating, selects 15 to 25 parts by weight of rubber powder, 1 to 2 parts by weight of silica aerogel and 5 to 8 parts by weight of modified vermiculite, can reduce noise in three aspects of reducing sound transmission speed, absorbing sound, eliminating the sound source and reducing the amplitude of sound waves to separate sound transmission, can obviously enhance the damping characteristic of the rubber powder in the weight part, and improves the damping effect in a wider temperature range and frequency range, thereby can reduce the building noise decibel better.

The present invention also provides a method for preparing a one-component soundproof coating, as shown in fig. 1, the method for preparing a one-component soundproof coating comprising the steps of:

step 110, mixing and stirring 30 to 36 parts of water, 0.1 to 0.25 part of cellulose, 0.1 to 0.4 part of preservative and 0.1 to 0.4 part of multifunctional additive to obtain a first mixture.

And 120, slowly adding 10-30 parts of rubber powder, 1-3 parts of polypropylene fiber and 3-8 parts of modified vermiculite into the first mixture, and stirring to obtain a second mixture.

And step 130, adding 15 to 23 parts of styrene-acrylic emulsion, 2 to 5 parts of acrylic emulsion and 0.3 to 0.7 part of film-forming assistant into the second mixture, and stirring to obtain a third mixture.

And step 140, slowly adding 1 to 3 parts of silicon dioxide aerogel, 5 to 11 parts of quartz sand, 14 to 20 parts of heavy calcium powder and 0.1 to 0.3 part of thickener into the third mixture, and stirring to obtain the single-component sound insulation coating.

The modified vermiculite is processed by the following method: providing vermiculite and emulsion according to the weight part ratio of 7-8:1, adding water into the emulsion according to the weight part ratio of 1:1 for dilution to obtain diluted emulsion, spraying the diluted emulsion onto the vermiculite, uniformly stirring, and drying for 12-72 h to obtain the modified vermiculite.

According to the single-component sound insulation coating, cellulose is added into water for thickening, rubber powder, polypropylene fiber and modified vermiculite are added, styrene-acrylic emulsion, acrylic emulsion and silica aerogel are added in a matching manner, and an auxiliary agent and a filler are added, so that the obtained single-component sound insulation coating has a good adhesion effect with a base surface, has the functions of reducing decibel, insulating sound and preserving heat, and can meet the standard of being less than or equal to 75dB in the relevant regulations in the national standard 'civil building sound insulation design Specification' GB50118-2010 only by constructing the single-component sound insulation coating with the thickness of 3-7 mm.

The invention also provides a single-component sound insulation coating which is prepared from the single-component sound insulation coating, wherein rubber powder, modified vermiculite and silicon dioxide aerogel are uniformly distributed and are lapped through polypropylene fibers, gaps among the quartz sand and the coarse whiting powder can be filled to form a framework, a multi-gradient microporous structure can be formed, components with the microporous structures are tightly connected, namely the framework is good in compactness and good in film forming performance, the structural integrity formed among the components is good, and the single-component sound insulation coating can meet the standard of being less than or equal to 75dB in the relevant regulations in the civil building sound insulation design specification GB50118-2010 of the existing national standard only by constructing 3-7mm in thickness.

The invention is further described below with reference to specific examples.

Example 1

A single-component sound insulation coating comprises, by mass, 30 parts of water, 0.1 part of cellulose, 0.1 part of preservative, 0.1 part of multifunctional auxiliary agent, 10 parts of rubber powder, 1 part of polypropylene fiber, 3 parts of modified vermiculite, 15 parts of styrene-acrylic emulsion, 2 parts of acrylic emulsion, 0.3 part of film-forming auxiliary agent, 1 part of silicon dioxide aerogel, 5 parts of quartz sand, 14 parts of heavy calcium powder and 0.1 part of thickening agent.

The treatment mode of the modified vermiculite is as follows: providing vermiculite and emulsion according to the weight part ratio of 7-8:1, adding water into the emulsion according to the weight part ratio of 1:1 for dilution to obtain diluted emulsion, spraying the diluted emulsion onto the vermiculite, uniformly stirring, and drying for 12-72 h to obtain the modified vermiculite.

A3 mm thick one-component sound-insulating coating was applied to the base surface of a floor slab of 100mm thickness.

Example 2

A single-component sound insulation coating comprises, by mass, 32.28 parts of water, 0.12 part of cellulose, 0.2 part of preservative, 0.2 part of multifunctional auxiliary agent, 25 parts of rubber powder, 1 part of polypropylene fiber, 5 parts of modified vermiculite, 18 parts of styrene-acrylic emulsion, 2.6 parts of acrylic emulsion, 0.5 part of film-forming auxiliary agent, 1 part of silicon dioxide aerogel, 8 parts of quartz sand, 16 parts of heavy calcium powder and 0.1 part of thickening agent.

The treatment mode of the modified vermiculite is as follows: providing vermiculite and emulsion according to the weight part ratio of 7-8:1, adding water into the emulsion according to the weight part ratio of 1:1 for dilution to obtain diluted emulsion, spraying the diluted emulsion onto the vermiculite, uniformly stirring, and drying for 12-72 h to obtain the modified vermiculite.

A3 mm thick one-component sound-insulating coating was applied to the base surface of a floor slab of 100mm thickness.

Example 3

A single-component sound insulation coating comprises, by mass, 32.28 parts of water, 0.12 part of cellulose, 0.2 part of preservative, 0.2 part of multifunctional auxiliary agent, 20 parts of rubber powder, 1 part of polypropylene fiber, 7 parts of modified vermiculite, 18 parts of styrene-acrylic emulsion, 2.6 parts of acrylic emulsion, 0.5 part of film-forming auxiliary agent, 2 parts of silicon dioxide aerogel, 8 parts of quartz sand, 16 parts of heavy calcium powder and 0.1 part of thickening agent.

The treatment mode of the modified vermiculite is as follows: providing vermiculite and emulsion according to the weight part ratio of 7-8:1, adding water into the emulsion according to the weight part ratio of 1:1 for dilution to obtain diluted emulsion, spraying the diluted emulsion onto the vermiculite, uniformly stirring, and drying for 12-72 h to obtain the modified vermiculite.

A3 mm thick one-component sound-insulating coating was applied to the base surface of a floor slab of 100mm thickness.

Example 4

A single-component sound insulation coating comprises, by mass, 36 parts of water, 0.25 part of cellulose, 0.4 part of preservative, 0.4 part of multifunctional auxiliary agent, 30 parts of rubber powder, 3 parts of polypropylene fiber, 8 parts of modified vermiculite, 23 parts of styrene-acrylic emulsion, 5 parts of acrylic emulsion, 0.7 part of film-forming auxiliary agent, 3 parts of silicon dioxide aerogel, 11 parts of quartz sand, 20 parts of heavy calcium powder and 0.3 part of thickening agent.

The treatment mode of the modified vermiculite is as follows: providing vermiculite and emulsion according to the weight part ratio of 7-8:1, adding water into the emulsion according to the weight part ratio of 1:1 for dilution to obtain diluted emulsion, spraying the diluted emulsion onto the vermiculite, uniformly stirring, and drying for 12-72 h to obtain the modified vermiculite.

A3 mm thick one-component sound-insulating coating was applied to the base surface of a floor slab of 100mm thickness.

Comparative example 1

A sound insulation coating comprises, by mass, 32.28 parts of water, 0.12 part of cellulose, 0.2 part of preservative, 0.2 part of multifunctional auxiliary agent, 25 parts of rubber powder, 1 part of polypropylene fiber, 5 parts of vermiculite, 18 parts of styrene-acrylic emulsion, 2.6 parts of acrylic emulsion, 0.5 part of film forming auxiliary agent, 1 part of silicon dioxide aerogel, 8 parts of quartz sand, 16 parts of heavy calcium powder and 0.1 part of thickener.

Wherein, vermiculite is not modified by covering particles with emulsion.

And constructing and forming a sound insulation coating with the thickness of 3mm on the base surface of the floor slab with the thickness of 100 mm.

Comparative example 2

A sound insulation coating comprises, by mass, 32.28 parts of water, 0.12 part of cellulose, 0.2 part of preservative, 0.2 part of multifunctional auxiliary agent, 5 parts of rubber powder, 1 part of polypropylene fiber, 5 parts of vermiculite, 18 parts of styrene-acrylic emulsion, 2.6 parts of acrylic emulsion, 0.5 part of film forming auxiliary agent, 1 part of silicon dioxide aerogel, 8 parts of quartz sand, 16 parts of heavy calcium powder and 0.1 part of thickener.

Wherein, vermiculite is not modified by covering particles with emulsion.

And constructing and forming a sound insulation coating with the thickness of 3mm on the base surface of the floor slab with the thickness of 100 mm.

Comparative example 3

A sound insulation coating comprises, by mass, 32.28 parts of water, 0.12 part of cellulose, 0.2 part of preservative, 0.2 part of multifunctional auxiliary agent, 40 parts of rubber powder, 1 part of polypropylene fiber, 5 parts of vermiculite, 18 parts of styrene-acrylic emulsion, 2.6 parts of acrylic emulsion, 0.5 part of film forming auxiliary agent, 1 part of silicon dioxide aerogel, 8 parts of quartz sand, 16 parts of heavy calcium powder and 0.1 part of thickener.

Wherein, vermiculite is not modified by covering particles with emulsion.

And constructing and forming a sound insulation coating with the thickness of 3mm on the base surface of the floor slab with the thickness of 100 mm.

And (3) sound insulation performance measurement:

using the one-component soundproof coatings of examples 1 to 4 as an example, floor slabs having a thickness of 100mm and floor impact sound and sound insulation tests after application of the one-component soundproof coating were carried out according to GB/T19889.7-2005 using the architectural acoustics measuring system 6290 LHZ/DS/Q351.

Before the single-component soundproof coating in examples 1 to 4 was applied, the floor without the single-component soundproof coating was subjected to impact sound insulation test, in which the sound source chamber was a blank finishing condition, the floor area was 25 to 35 square meters, the receiving chamber volume was 80 to 100 cubic meters, and the doors and windows were closed during the test.

TABLE 1 floor impact sound insulation Performance test results

As can be seen from Table 1, the weighted standardized impact sound pressure levels of the impact sounds of the floors measured in the examples 1 to 4 are all less than 70dB, and the single-component sound insulation coatings of the examples 1 to 4 can meet the standard of less than or equal to 75dB in the sound insulation standard requirements of residential buildings in the existing national standard GB50118-2010 civil building sound insulation design Specification when the thickness of the single-component sound insulation coatings is 3mm during construction, so that the thickness of the sound insulation coatings can be effectively reduced.

And (3) sound insulation performance measurement:

the floor impact sound insulation performance test of 100mm thickness was performed by taking the sound insulation coatings in comparative examples 1 to 3 as examples.

TABLE 2 floor impact sound insulation Performance test results

As can be seen from tables 1 and 2, the weighted standardized impact sound pressure level of the impact sound of the floor slab measured in the comparative examples 1 to 3 is correspondingly reduced relative to the detection value before proofing, but the weighted standardized impact sound pressure levels are all larger than 70dB, and the single-component sound insulation coating in the examples 1 to 4 has better sound insulation performance relative to the sound insulation coating in the comparative examples 1 to 3 with the same thickness, can effectively meet the standard of being less than or equal to 75dB in the sound insulation standard requirement of the residential building in the existing national standard GB50118-2010 civil building sound insulation design Specification, and effectively reduces the thickness of the sound insulation coating.

Test of Heat insulating Property

The samples were tested for thermal conductivity using the one-component sound-deadening coating of example 2 as an example.

The detection shows that the thermal conductivity of the single-component sound insulation coating in the embodiment 2 is 0.040W/m.k, the measured value of the thermal conductivity is 0.030-0.060W/m.k, the thermal conductivity is small, the single-component sound insulation coating conforms to the performance index of a heat insulation material, has excellent heat insulation performance and can play a role in heat insulation, and compared with the existing heat insulation material, the single-component sound insulation coating can reduce the structural thickness of a building and increase the indoor use area under the condition of meeting the same heat insulation requirement.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above embodiments only express a few embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. The single-component sound insulation coating is characterized by comprising the following components in parts by mass:

2. the one-component sound-proofing coating according to claim 1, wherein the auxiliary agent comprises the following components in parts by mass:

3. the mono-component acoustical insulation coating of claim 1 wherein the polypropylene fibers have a length of 2mm to 4 mm.

4. The one-component acoustical insulation coating of claim 1 wherein the modified vermiculite is treated by:

providing vermiculite and an emulsion;

and spraying the emulsion onto the vermiculite, uniformly stirring, and drying to obtain the modified vermiculite.

5. The one-component soundproof coating according to claim 4, wherein the modified vermiculite has a particle size of 80 mesh to 200 mesh.

6. The one-component soundproofing coating according to claim 1, wherein the styrene-acrylic emulsion has a solid content of 60% to 70%.

7. The one-component acoustical insulation coating of claim 1, wherein the acrylic emulsion has a solids content of 45% to 50%.

8. The one-component soundproof coating according to claim 1, wherein the silica aerogel has a particle size of 20 mesh to 50 mesh.

9. A method for preparing a single-component sound-proofing coating is characterized by comprising the following steps:

mixing and stirring 30-36 parts of water, 0.1-0.25 part of cellulose, 0.1-0.4 part of preservative and 0.1-0.4 part of multifunctional additive to obtain a first mixture;

slowly adding 10-30 parts of rubber powder, 1-3 parts of polypropylene fiber and 3-8 parts of modified vermiculite into the first mixture, and stirring to obtain a second mixture;

adding 15-23 parts of styrene-acrylic emulsion, 2-5 parts of acrylic emulsion and 0.3-0.7 part of film-forming assistant into the second mixture, and stirring to obtain a third mixture;

slowly adding 1 to 3 parts of silicon dioxide aerogel, 5 to 11 parts of quartz sand, 14 to 20 parts of heavy calcium powder and 0.1 to 0.3 part of thickening agent into the third mixture, and stirring to obtain the single-component sound insulation coating.

10. A one-component sound-deadening coating comprising the one-component sound-deadening coating material according to any one of claims 1 to 9.

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