CN115948096A - Floor sound insulation coating and preparation method thereof - Google Patents
Floor sound insulation coating and preparation method thereof Download PDFInfo
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Abstract
The application relates to the technical field of coatings, and particularly discloses a floor sound-insulation coating and a preparation method thereof. A floor acoustic coating comprising: 10-15 parts of epoxy resin, 5-10 parts of organic silicon resin, 3-6 parts of modified polyphenylene sulfide, 15-25 parts of N-methyl pyrrolidone, 2-5 parts of alkanolamine, 4-8 parts of white carbon black powder, 3-6 parts of barite powder, 2-5 parts of curing agent, 1-2 parts of dispersant and the balance of water; the preparation method comprises the following steps: firstly, uniformly mixing epoxy resin, organic silicon resin, barite powder and a dispersing agent to obtain a first mixture; and mixing the first mixture with the uniformly mixed modified polyphenylene sulfide, N-methylpyrrolidone and white carbon black powder, adding alkanolamine to regulate the pH value of the mixture, adding a curing agent, and uniformly stirring to obtain the sound insulation coating. The composition can be used for construction of floor sound insulation measures, has a stable sound insulation effect within a wide temperature range, and is high in compressive strength and good in water resistance.
Description
Technical Field
The application relates to the technical field of coatings, in particular to a floor sound-insulation coating and a preparation method thereof.
Background
At present, most of commercial houses in the real estate market in China are not ideal enough in sound insulation, the sound insulation effect meeting the expectation of consumers is difficult to achieve, sounds such as walking upstairs, jumping sounds and moving furniture are easy to transmit downstairs, and the work and life of people are greatly influenced. In recent years, in the fields of buildings and the like, along with the increasing requirements of people on living comfort, safety and the like, various technologies for floor slab shock absorption and sound insulation are presented aiming at indoor noise sources and sound insulation and noise reduction requirements. The traditional sound insulation technical mode is adopted to lay the sound insulation mortar and the sound insulation pad or lay the multilayer sound insulation material with a special structure, so that the traditional sound insulation technical mode is not only troublesome to lay and occupies space, but also has the defects of inflammability, low compressive strength and the like, and the sound insulation effect is not good.
Disclosure of Invention
In order to solve the problems, the application provides a floor sound-insulation coating and a preparation method thereof.
In a first aspect, the application provides a building floor sound insulation coating, which adopts the following technical scheme:
a floor sound insulation coating comprises the following raw materials in parts by weight: 10-15 parts of epoxy resin, 5-10 parts of organic silicon resin, 3-6 parts of modified polyphenylene sulfide, 15-25 parts of N-methylpyrrolidone, 2-5 parts of alkanolamine, 4-8 parts of white carbon black powder, 3-6 parts of barite powder, 2-5 parts of curing agent, 1-2 parts of dispersant and the balance of water.
By adopting the technical scheme, the addition of the polyphenyl thioether expands the range of the effective damping performance of the organic silicon resin, so that the organic silicon resin can achieve a good sound insulation effect within a wider temperature range; the epoxy resin has good adhesive force and coactions with the organic silicon resin and the modified polyphenyl thioether, long chains are mutually wound to form a three-dimensional net-shaped three-dimensional structure, and by utilizing resin materials with high damping property under various different frequency bands, when vibration is transmitted by sound waves, the internal friction resistance among chain segments is overcome through stretching-retracting of the resin materials, so that sound energy is converted into kinetic energy to be consumed; meanwhile, the white carbon black powder with the pores and the barite powder are bonded in the coating, so that the surface density of the coating can be increased, the quality of the coating is improved, the modified polyphenyl thioether which is favorable for increasing the surface flatness of the coating to form a reflection interface is acted, the transmission of sound waves is effectively blocked, and the energy loss of the sound waves in the transmission process is increased. Finally, the sound insulation coating with good adhesive force and good sound insulation effect in a wider temperature range is obtained.
Optionally, the modified polyphenylene sulfide is prepared by the following steps:
pretreating carbon fibers in an alkaline solution by using isopropyl distearoyl acyloxy aluminate, mixing the functionalized carbon fibers with polyphenyl thioether, then ball-milling for 1-2 days, and uniformly mixing to obtain the modified polyphenyl thioether.
By adopting the technical scheme, although the polyphenyl thioether has good chemical resistance, the modified polyphenyl thioether prepared by adding the carbon fiber generates transverse crystals which can enhance the interface adhesion force, so that the toughness and the strength of the modified polyphenyl thioether are enhanced, meanwhile, the carbon fiber has higher Young modulus, and the excellent performance brings good sound insulation effect to the coating.
Optionally, the alkanolamine is N-methylethanolamine.
By adopting the technical scheme, the dispersion uniformity of the white carbon black and the barite in the coating is promoted, the pH value of the coating is adjusted to 8-10, the progress of a crosslinking reaction is inhibited in the coating, the N-methylethanolamine has volatility in the coating film forming process, and the crosslinking reaction speed is accelerated and the film is formed rapidly along with the rapid volatilization, permeation and loss of water and alkaline components.
Optionally, the sound insulation coating further comprises 3-6 parts of metal powder.
Optionally, the density of the metal powder is 5.6g/cm 3 -9.5g/cm 3 In the meantime.
Through adopting above-mentioned technical scheme, the density that adds the great metal powder of density and improve soundproof coating cooperates with the cement wall that density is little, consumes the energy of sound wave in the transmission course, reinforcing sound insulation effect.
Optionally, the dispersant is one or more of an ammonium salt dispersant and a quaternary ammonium salt dispersant. .
By adopting the technical scheme, all components of the raw materials are uniformly dispersed, and the sound insulation coating with uniform and stable sound insulation effect is obtained.
Optionally, the curing agent is a polyamide resin.
By adopting the technical scheme, the polyamide resin is used as the curing agent to accelerate the drying speed of the coating, and simultaneously, the polyamide resin, the epoxy resin and the organic silicon resin act together to enhance the toughness, the waterproof performance and the corrosion resistance of the sound insulation coating.
In a second aspect, the application provides a preparation method of a floor sound-insulation coating, which adopts the following technical scheme:
a preparation method of a floor sound insulation coating comprises the following preparation steps:
(1) Sequentially adding epoxy resin, organic silicon resin, barite powder and a dispersing agent into water, and uniformly mixing at 70-95 ℃ to obtain a first mixture;
(2) Adding the modified polyphenylene sulfide into N-methylpyrrolidone, performing ultrasonic treatment for 40-60min, adding white carbon black powder, stirring for 1-2h, and uniformly mixing with the mixed solution in the step (1) to obtain a second mixture;
(3) Adding alkanolamine to adjust the pH value of the mixture to 8-10, and mixing and stirring the curing agent and the second mixture in the step (2) uniformly to obtain the sound insulation coating.
By adopting the technical scheme, the preparation process is simple, the dispersibility of the filler in the coating is improved, the components can be fully and uniformly mixed, the three-dimensional net-shaped three-dimensional structure material with good strength and toughness is prepared, and the sound insulation coating with good sound insulation effect is obtained.
In summary, the present application has the following beneficial effects:
1. because the modified polyphenylene sulfide, the epoxy resin and the organic silicon resin are used for acting together, the internal friction force of the movement of the molecular chain segment is effectively increased by the organic group on the long-chain molecule, when the acoustic wave is vibrated, a part of energy is consumed by overcoming the internal friction force of stretching-retracting, the surface density of the coating is increased by the loose and porous white carbon black and the barite powder, the reflecting layer is formed, the transmission of the acoustic wave is effectively blocked, and the energy loss of the acoustic wave in the transmission process is increased.
2. In the application, polyamide resin is preferably added as a curing agent, and the coating has good adsorption capacity on the ground due to the existence of a plurality of hydroxyl groups and ether bonds on the epoxy resin, so that the polyamide resin is used as the curing agent to accelerate the drying speed of the coating, and can also act together with the epoxy resin to enhance the bonding capacity between the coating and an interface and enhance the waterproof and anticorrosive performances of the coating.
3. According to the method, the components are fully reacted and uniformly mixed by gradually mixing and controlling the proportion and the sequence of mixing and adding, so that the sound insulation coating which can be rapidly formed into a film and has good toughness and a good sound insulation effect is prepared.
Detailed Description
The present application will be described in further detail with reference to examples.
The white carbon black powder has a particle size of 15 +/-5 nm and is purchased from Hangzhou Hengge nanotechnology GmbH;
the barite powder with the mesh number of 1000 meshes is purchased from Hengxin mineral product processing factories in Lingshou county;
ammonium salt dispersant, available from Shandong Rui Yuan Biotech Co., ltd;
quaternary ammonium salt dispersants available from Hubei Cowpond chemical Co., ltd.
Preparation example of modified polyphenylene sulfide
Preparation example 1
Mixing 10.5kg of isopropyl distearoyl acyloxy aluminate with 5kg of sodium hydroxide, adding 8.5kg of carbon fiber, soaking for 12h, filtering, drying, mixing the functionalized carbon fiber with 10kg of polyphenyl thioether, ball-milling for 1d, and uniformly mixing to obtain the modified polyphenyl thioether.
Preparation example 2
Mixing 10.5kg of isopropyl distearoyl acyloxy aluminate with 5kg of sodium hydroxide, adding 8.5kg of carbon fiber, soaking for 12h, filtering, drying, mixing the functionalized carbon fiber with 10kg of polyphenyl thioether, ball-milling for 2d, and uniformly mixing to obtain the modified polyphenyl thioether.
Examples
Example 1
A floor sound insulation coating comprises the following preparation steps:
(1) Sequentially adding epoxy resin, organic silicon resin, barite powder and a dispersing agent into water, and continuously stirring and uniformly mixing at 70 ℃ to obtain a first mixture;
(2) Adding the modified polyphenyl thioether into N-methyl pyrrolidone, performing ultrasonic treatment for 40min, adding white carbon black powder, stirring for 2h, and uniformly mixing with the mixed solution in the step (1) to obtain a second mixture;
(3) Adding alkanolamine to adjust the pH value of the mixture to 8, and mixing and stirring the curing agent and the second mixture obtained in the step (2) uniformly to obtain the sound-insulating coating.
In this example, triethylenetetramine was used as the alkanolamine, adipic acid dihydrazide was used as the curing agent, ammonium salt was used as the dispersant, and the modified polyphenylene sulfide was prepared according to preparation example 1.
Example 2
A floor sound insulation coating comprises the following preparation steps:
(1) Sequentially adding epoxy resin, organic silicon resin, barite powder and a dispersing agent into water, and continuously stirring and uniformly mixing at 82 ℃ to obtain a first mixture;
(2) Adding the modified polyphenylene sulfide into N-methylpyrrolidone, performing ultrasonic treatment for 60min, adding white carbon black powder, stirring for 1.5h, and uniformly mixing with the mixed solution in the step (1) to obtain a second mixture;
(3) Adding alkanolamine to adjust the pH value of the mixture to 10, and mixing and stirring the curing agent and the second mixture obtained in the step (2) uniformly to obtain the sound-insulating coating.
In this example, tetraethylenepentamine was used as the alkanolamine, adipic acid dihydrazide was used as the curing agent, ammonium salt was used as the dispersant, and the modified polyphenylene sulfide was obtained in preparation example 1.
Example 3
A floor sound insulation coating comprises the following preparation steps:
(1) Sequentially adding epoxy resin, organic silicon resin, barite powder and a dispersing agent into water, and continuously stirring and uniformly mixing at 95 ℃ to obtain a first mixture;
(2) Adding the modified polyphenyl thioether into N-methyl pyrrolidone, performing ultrasonic treatment for 50min, adding white carbon black powder, stirring for 1h, and uniformly mixing with the mixed solution in the step (1) to obtain a second mixture;
(3) Adding alkanolamine to adjust the pH value of the mixture to 9, and mixing and stirring the curing agent and the second mixture obtained in the step (2) uniformly to obtain the sound-insulating coating.
In this example, aminoethylpiperazine was used as the alkanolamine, adipic acid dihydrazide was used as the curing agent, quaternary ammonium salt was used as the dispersant, and the modified polyphenylene sulfide was prepared according to preparation example 2.
TABLE 1 materials and weights (kg) thereof in examples 1-3
Example 4
A floor sound-insulating coating is different from that in example 3 in that the alkanolamine used in the raw material is N-methylethanolamine.
Example 5
A floor sound insulation coating is different from the example 3 in that 3kg of iron powder is added into the raw materials. The preparation steps are as follows:
(1) Sequentially adding epoxy resin, organic silicon resin, barite powder, metal powder and a dispersing agent into water, continuously stirring and uniformly mixing at 95 ℃ to obtain a first mixture;
(2) Adding the modified polyphenyl thioether into N-methyl pyrrolidone, performing ultrasonic treatment for 50min, adding white carbon black powder, stirring for 1h, and uniformly mixing with the mixed solution in the step (1) to obtain a second mixture;
(3) Adding alkanolamine to adjust the pH value of the mixture to 9, and mixing and stirring the curing agent and the second mixture obtained in the step (2) uniformly to obtain the sound-insulating coating.
In this example, aminoethylpiperazine was used as the alkanolamine, adipic acid dihydrazide was used as the curing agent, a quaternary ammonium salt dispersant was used as the dispersant, and the modified polyphenylene sulfide was obtained in preparation example 2.
Example 6
A floor sound-insulating coating is different from example 5 in that 4.5kg of zinc oxide powder is added as a metal powder to the raw material.
Example 7
A floor sound-insulating coating material is different from that of example 5 in that 6kg of zirconia powder was added as a metal powder to a raw material.
Example 8
A floor sound-insulating coating is different from that in example 6 in that the curing agent used in the raw materials is polyamide resin.
Comparative example
Comparative example 1
A floor sound-insulating coating material is different from that of example 3 in that unmodified polyphenyl thioether is added to the raw material.
Comparative example 2
A floor sound-insulating coating is different from that in example 3 in that modified polyphenylene sulfide is not added to the raw materials.
Comparative example 3
The floor sound insulation coating is different from the embodiment 3 in that the white carbon black powder is not added into the raw materials.
Comparative example 4
A floor sound-insulating coating is different from that in example 3 in that no barite powder is added to the raw materials.
Performance test
Detection method/test method
And (3) detecting the sound insulation performance: according to GB/T19889.8-2006 Acoustic construction and construction elements 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.
And (3) detecting the compressive strength: the test was performed according to GB/T5486-2008 procedure.
TABLE 1 Performance test results
As can be seen by combining examples 1-4 and comparative examples 1-2 with Table 1, the sound insulation improvement of examples 1-3 is significantly higher than that of comparative examples 1-2, and the sound insulation effect is better maintained when the temperature is changed, which indicates that the sound insulation effect of the coating in a wider temperature range is synergistically enhanced by adding the modified polyphenylene sulfide and other components in the coating, the flatness between interfaces is enhanced to a certain extent by the polyphenylene sulfide, the noise sound wave is effectively reflected, and the sound insulation effect is enhanced. Meanwhile, the modified polyphenyl thioether has better compressive strength.
It can be seen by combining examples 1-4 and comparative examples 3-4 and table 1 that the detection performances of examples 1-3 are higher than those of comparative examples 3-4, which shows that when the sound-insulating coating contains loose and porous barite powder and white carbon black powder, the areal density of the coating can be increased, and the energy consumed by noise in the transmission process can be increased, so that a better sound-insulating effect can be achieved.
Combining example 3 with examples 5-7 and combining table 1, it can be seen that the test performances of examples 5-7 are better than example 3, which shows that the addition of metal powder in the specified density range into the sound-insulating coating can effectively improve the sound-insulating effect and compressive strength of the coating.
Combining example 6 with example 8 and combining table 1, it can be seen that the experimental data of example 8 are better than example 6, which shows that the addition of polyamide resin as curing agent can produce synergistic effect with other components in the coating to enhance the properties of the coating. The GB/T1733-93A method is used for carrying out a water resistance test, the test time is prolonged, the phenomena of hollowing and delamination do not occur in 4 days in examples 1-7 and comparative examples 1 and 3-4, the phenomena of hollowing and delamination do not occur in 7 days in example 8, and the phenomena of hollowing and delamination do not occur in 3 days in comparative example 2, which shows that the polyurethane curing agent can be added to be cooperated with epoxy resin to enhance the waterproof performance of the coating.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (8)
1. The floor sound insulation coating is characterized by comprising the following raw materials in parts by weight: 10-15 parts of epoxy resin, 5-10 parts of organic silicon resin, 3-6 parts of modified polyphenylene sulfide, 15-25 parts of N-methylpyrrolidone, 2-5 parts of alkanolamine, 4-8 parts of white carbon black powder, 3-6 parts of barite powder, 2-5 parts of curing agent, 1-2 parts of dispersant and the balance of water.
2. The building floor sound-insulating coating material according to claim 1, wherein: the modified polyphenylene sulfide is prepared by the following steps:
pretreating carbon fibers in an alkaline solution by using isopropyl distearoyl acyloxy aluminate, mixing the functionalized carbon fibers with polyphenyl thioether, then ball-milling for 1-2 days, and uniformly mixing to obtain the modified polyphenyl thioether.
3. The building floor sound-insulating coating material according to claim 1, wherein: the alkanolamine is N-methylethanolamine.
4. The building floor sound-insulating coating material according to claim 1, wherein: the sound insulation coating also comprises 3-6 parts of metal powder.
5. The building floor sound-insulating coating according to claim 4, wherein: the density of the metal powder is 5.6g/cm 3 -9.5g/cm 3 In the meantime.
6. The building floor sound-insulating coating as claimed in claim 1, wherein: the dispersant is one or more of ammonium salt dispersant and quaternary ammonium salt dispersant.
7. The building floor sound-insulating coating material according to claim 1, wherein: the curing agent is polyamide resin.
8. A method for preparing a floor sound-insulating coating material according to any one of claims 1 to 7, comprising the steps of:
(1) Sequentially adding epoxy resin, organic silicon resin, barite powder and a dispersing agent into water, and uniformly mixing at 70-95 ℃ to obtain a first mixture;
(2) Adding the modified polyphenylene sulfide into N-methylpyrrolidone, performing ultrasonic treatment for 40-60min, adding white carbon black powder, stirring for 1-2h, and uniformly mixing with the mixed solution in the step (1) to obtain a second mixture;
(3) Adding alkanolamine to adjust the pH value of the mixture to 8-10, and mixing and stirring the curing agent and the second mixture obtained in the step (2) uniformly to obtain the sound-insulating coating.
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