Fireproof sound-transmitting coating capable of being scraped in batches

Abstract

The invention provides a fireproof sound-transmitting coating capable of being scraped in batches. The fireproof sound-transmitting coating is prepared from the following components in parts by weight: 10 to 24.5 parts of deionized water, 6 to 10 parts of emulsion, 6 to 12 parts of inorganic resin, 0.8 part of texanol, 0.6 part of an anti-freezing agent, 0.2 part of an antibacterial agent, 0.2 part of a bactericide and 0.2 to 0.3 part of hydroxyethyl cellulose. The part number of the organic rubber powder is 0.3-0.5 part, and the part number of the bone inorganic material is 55-70 parts. The purpose of the invention is to improve the batch scraping construction property of the acoustic transmission coating without reducing the water resistance of the coating and improve the fire resistance of the coating at the same time. According to the invention, the starch ether is added to improve the acting force between water molecules, so that the lubricity between sand grains is further improved, the batch scraping construction property of the acoustic transmission coating is improved, and the emulsion and the silica sol are adopted as the sand bonding materials, so that the problem of water resistance caused by the starch ether is solved. Meanwhile, the addition amount of the emulsion is reduced, so that the fire resistance rating is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of sound-permeable coatings, and particularly to a scrapeable fireproof sound-permeable coating. Background Art

[0002] With the continuous deepening of the understanding of noise pollution in modern society, people's expectations for environmental beauty and sound quality are also increasing day by day. Sound-permeable coatings, as an innovative technology that combines functionality and decoration, have gradually received extensive attention in the application of public spaces. When combined with sound-absorbing panels, sound-permeable coatings provide an effective solution for achieving seamless large-area splicing, meeting the dual requirements of sound absorption and noise reduction as well as decoration and beautification.

[0003] The unique working principle of sound-permeable coatings lies in that their film-forming substances can bond coarse sand to form a coating with voids. When sound encounters this special coating, it can penetrate and continue to propagate, and be absorbed by the sound-absorbing panel behind. This process significantly reduces the noise level and provides strong support for creating a quiet and comfortable indoor environment.

[0004] Currently, the sound-permeable coatings on the market mainly use acrylic emulsion as the film-forming substance, and are paired with inorganic skeleton materials such as expanded perlite and aeolian sand. These inorganic skeleton materials not only enhance the sound absorption performance of the coatings, but also improve their overall mechanical strength. At the same time, in order to maintain the moisture of the coatings and increase their viscosity, hydroxyethyl cellulose is used as an additive during the production process. This additive effectively improves the construction performance of the coatings, making them easier to operate and apply.

[0005] However, current sound-permeable coatings face a significant problem: due to the mesh number of the expanded perlite and aeolian sand used in them being between 30 and 60 mesh, and the particle size being relatively large, the scrapeable ductility of the coatings is poor. This makes it easy for sound-permeable coatings to have knife marks, poor flatness, and adhesion problems during large-area construction (area exceeding 200 ㎡). Therefore, currently, sound-permeable coatings mainly use spraying construction methods for large-area applications. Spraying can ensure that a uniform and continuous coating is formed on the substrate, thereby achieving the best sound absorption effect.

[0006] However, spraying construction also has its limitations. Especially in indoor environments, the surface roughness of the sprayed coating is relatively high, and the aesthetics are often not as good as those of other decorative coatings. This to a certain extent limits the application of sound-permeable coatings in the field of indoor decoration. In addition, all the film-forming substances of current sound-permeable coatings are organic substances, which means their fireproof performance is relatively low. During a fire, organic substances are more likely to burn and release a large amount of heat and toxic gases. Therefore, the fireproof rating of the coatings of existing sound-permeable coatings is only B-A2 level, which may become an obstacle to their application in some occasions with high fireproof requirements.

[0007] To solve the above problems and meet the market demand, it is particularly important to develop a sound-transmitting coating that can be troweled and has good aesthetics and a higher fire rating. Such a coating will be able to overcome the limitations of the existing technology and achieve efficient, convenient, and safe large-area construction. At the same time, achieving higher decoration and fire protection standards while ensuring the sound absorption effect will bring more possibilities and choices to the construction and decoration fields.

[0008] In summary, as people's awareness of noise pollution and environmental aesthetics continues to improve and their expectations for sound quality increase, sound-transmitting coatings, as an innovative technology, will play an even more important role in the future. The main direction for the future development of sound-transmitting coatings will be to continuously research and improve the existing technology to meet market demands and achieve higher performance. Summary of the Invention

[0009] To achieve this goal, in-depth research and optimization are required in multiple aspects such as the formulation design of the coating, raw material selection, and production process.

[0010] In view of the deficiencies of the existing technology, the present invention provides a trowelable fireproof sound-transmitting coating, which is characterized in that the raw material composition includes: deionized water, emulsion, inorganic resin, 2-ethylhexyl acetate, antifreeze, antibacterial agent, fungicide, hydroxyethyl cellulose, organic glue powder, inorganic aggregate.

[0011] Further, the emulsion is one or more of styrene-acrylic emulsion, pure acrylic emulsion, and silicone-acrylic emulsion with a glass transition temperature of 10-20°C.

[0012] Further, the organic glue powder is one or a mixture of starch ether and EVA powder.

[0013] Further, the inorganic resin is one or a mixture of silica sol and silicate.

[0014] Further, the antifreeze is propylene glycol.

[0015] Further, the antibacterial agent is one or a mixture of methylisothiazolinone and azoxystrobin.

[0016] Further, the inorganic aggregate is one or a mixture of expanded perlite, aeolian sand, hollow glass beads, fly ash, and ceramsite.

[0017] Further, the amount of deionized water is 10 - 24.5 parts, the amount of the emulsion is 6 - 10 parts, the amount of the inorganic resin is 6 - 12 parts, the amount of lauryl alcohol ester 12 is 0.8 part, the amount of the antifreeze is 0.6 part, the amount of the antibacterial agent is 0.2 part, the amount of the bactericide is 0.2 part, the amount of hydroxyethyl cellulose is 0.2 - 0.3 part, the amount of the organic rubber powder is 0.3 - 0.5 part, and the amount of the inorganic aggregate is 55 - 70 parts.

[0018] Further, a preparation method of a scrapeable fireproof sound-transmitting coating, characterized by comprising: first adding the deionized water into a stirring tank, and then sequentially adding the antifreeze, the antibacterial agent, the bactericide, the hydroxyethyl cellulose, the organic rubber powder, and the lauryl alcohol ester 12 under a stirring speed of 300 - 400 revolutions per minute, and stirring evenly; then, adding the inorganic resin under a stirring speed of 800 - 1000 revolutions per minute, and stirring evenly; adding the emulsion, and stirring evenly; finally, reducing the stirring speed to 300 - 400 revolutions per minute, adding the inorganic aggregate, and stirring evenly to obtain the scrapeable fireproof sound-transmitting coating.

[0019] A construction method using the scrapeable fireproof sound-transmitting coating includes a scraping construction step.

[0020] Further, in the scraping construction, large-area coating construction can be achieved.

[0021] The beneficial effects of the present invention:

[0022] The main purpose of the present invention is to improve the scraping workability of the sound-transmitting coating, and without reducing the water resistance of the coating, while improving the fire resistance of the coating. The present invention adds starch ether to increase the intermolecular force of water molecules, thereby improving the lubricity between sand grains and improving the scraping workability of the sound-transmitting coating. Emulsion and silica sol are used as the bonding materials for sand and gravel, solving the water resistance problem brought by the starch ether. At the same time, due to the reduced addition amount of the emulsion in the present invention, the fire resistance level is improved. Specific embodiments

[0023] To more clearly understand the purpose, technical solution and technical effect of the present invention, the present invention will be further described below, but the protection scope of the present invention is not limited only to the following embodiments.

[0024] Example 1:

[0025] A scrapeable fireproof sound-transmitting coating, the raw material composition of which is: 24.5 parts of deionized water, 6 parts of silicone-acrylic emulsion, 12 parts of silica sol, 0.8 part of lauryl alcohol ester 12, 0.6 part of antifreeze, 0.2 part of antibacterial agent, 0.2 part of bactericide, 0.2 part of hydroxyethyl cellulose, 0.5 part of starch ether, 10 parts of 50-mesh expanded perlite, and 45 parts of 60-mesh aeolian sand.

[0026] Among them, the glass transition temperature of the silicone-acrylic emulsion is 10 - 20 °C.

[0027] Among them, the antibacterial agent is methylisothiazolinone.

[0028] Among them, the antifreeze agent is propylene glycol.

[0029] Its preparation method includes: first adding the deionized water into a stirring tank, and then successively adding the antifreeze agent, the antibacterial agent, the bactericide, the hydroxyethyl cellulose, the starch ether, and the lauryl alcohol ester at a stirring speed of 300 - 400 revolutions per minute, and stirring evenly; then, adding the silica sol at a stirring speed of 800 - 1000 revolutions per minute, stirring evenly, adding the pure acrylic emulsion, and stirring evenly; finally, reducing the speed to 300 - 400, adding the expanded perlite and the aeolian sand, and stirring evenly to obtain the scorable fireproof and sound-permeable coating.

[0030] Example 2:

[0031] A scorable fireproof and sound-permeable coating, whose raw material composition is: 10 parts of deionized water, 6 parts of pure acrylic emulsion, 11.5 parts of silica sol, 0.8 part of lauryl alcohol ester, 0.6 part of antifreeze agent, 0.2 part of antibacterial agent, 0.2 part of bactericide, 0.2 part of hydroxyethyl cellulose, 0.5 part of EVA powder, and 70 parts of 60-mesh hollow glass beads.

[0032] Among them, the glass transition temperature of the pure acrylic emulsion is 10 - 20 °C.

[0033] Among them, the antibacterial agent is oxfendazole.

[0034] Among them, the antifreeze agent is propylene glycol.

[0035] Its preparation method includes: first adding the deionized water into a stirring tank, and then successively adding the antifreeze agent, the antibacterial agent, the bactericide, the hydroxyethyl cellulose, the EVA powder, and the lauryl alcohol ester at a stirring speed of 300 - 400 revolutions per minute, and stirring evenly; then, adding the silica sol at a stirring speed of 800 - 1000 revolutions per minute, stirring evenly, adding the pure acrylic emulsion, and stirring evenly; finally, reducing the speed to 300 - 400, adding the aeolian sand, and stirring evenly to obtain the scorable fireproof and sound-permeable coating.

[0036] Example 3:

[0037] A kind of plasterable fireproof and sound-permeable coating, the raw material composition of which is: 11.6 parts of deionized water, 10 parts of pure acrylic emulsion, 6 parts of silicate, 0.8 part of alcohol ester 12, 0.6 part of antifreeze, 0.2 part of antibacterial agent, 0.2 part of fungicide, 0.3 part of hydroxyethyl cellulose, 0.3 part of starch ether, 70 parts of 60-mesh ceramsite.

[0038] Among them, the glass transition temperature of the pure acrylic emulsion is 10-20 °C.

[0039] Among them, the antibacterial agent is famoxadone.

[0040] Among them, the antifreeze is propylene glycol.

[0041] Its preparation method includes: first adding the deionized water into a stirring tank, and then adding the antifreeze, the antibacterial agent, the fungicide, the hydroxyethyl cellulose, the starch ether, and the alcohol ester 12 in sequence under a stirring speed of 300-400 r / min, and stirring evenly; then, adding the silicate under a stirring speed of 800-1000 r / min, stirring evenly, adding the pure acrylic emulsion, and stirring evenly; finally, reducing the speed to 300-400, adding the ceramsite, and stirring evenly to obtain the plasterable fireproof and sound-permeable coating.

[0042] The above embodiments are only specific descriptions of the feasible embodiments of the present invention, and are not used to limit the patent protection scope of the present invention. Any equivalent implementation or change that does not depart from the present invention shall be included in the patent scope of this case.

Claims

1. A fireproof and sound-permeable coating that can be troweled, characterized in that, Comprising: Deionized water, emulsion, inorganic resin, lauryl alcohol polyoxyethylene ether acetate, antifreeze, antibacterial agent, fungicide, hydroxyethyl cellulose, organic rubber powder, inorganic aggregate; the amount of the deionized water is 10 - 24.5 parts, the amount of the emulsion is 6 - 10 parts, the amount of the inorganic resin is 6 - 12 parts, the amount of the lauryl alcohol polyoxyethylene ether acetate is 0.8 part, the amount of the antifreeze is 0.6 part, the amount of the antibacterial agent is 0.2 part, the amount of the fungicide is 0.2 part, the amount of the hydroxyethyl cellulose is 0.2 - 0.3 part, the amount of the organic rubber powder is 0.3 - 0.5 part, and the amount of the inorganic aggregate is 55 - 70 parts.

2. The scratchable fireproof sound-transmitting coating according to claim 1, characterized in that, The emulsion is one or more of styrene-acrylic emulsion, pure acrylic emulsion, and silicone-acrylic emulsion with a glass transition temperature of 10 - 20 °C.

3. The fireproof sound-transmitting coating that can be troweled according to claim 1, wherein, The organic rubber powder is one or a mixture of starch ether and EVA powder.

4. A scrapeable fireproof and sound-permeable coating according to claim 1, wherein The inorganic resin is one or a mixture of silica sol and silicate.

5. The fireproof sound-permeable coating that can be troweled according to claim 1, wherein, The antifreeze is propylene glycol.

6. The fireproof sound-permeable coating that can be scraped as claimed in claim 1, wherein, The antibacterial agent is one or a mixture of methylisothiazolinone and oxadixyl.

7. A scrapeable fireproof and sound-permeable coating according to claim 1, wherein The inorganic aggregate is one or a mixture of expanded perlite, aeolian sand, hollow glass beads, fly ash, and ceramsite.

8. A preparation method of a fireproof and sound-permeable coating that can be troweled, as described in any one of claims 1-7, characterized in that, Comprising: First, add the deionized water into a stirring tank, and then successively add the antifreeze, the antibacterial agent, the fungicide, the hydroxyethyl cellulose, the organic rubber powder, and the lauryl alcohol polyoxyethylene ether acetate at a stirring speed of 300 - 400 revolutions per minute, and stir evenly; then, add the inorganic resin at a stirring speed of 800 - 1000 revolutions per minute, and stir evenly; then add the emulsion, and stir evenly; finally, reduce the stirring speed to 300 - 400 revolutions per minute, add the inorganic aggregate, and stir evenly to obtain a scrapeable fireproof and sound-permeable coating.

9. A method for construction using the scrapeable fireproof and sound-permeable coating according to any one of claims 1 - 7, comprising a scraping construction step.