A soundproof coating material and a method for preparing the same

Abstract

The present application relates to the technical field of coating material, especially to a sound insulation coating material and a preparation method thereof, the coating material is a two-component type coating material comprising a first material and a second material; the first material comprises: A primer, B mixture, C mixture, D oxidizing agent, E reducing agent, F emulsifier, ammonia, preservative; the second material comprises: rubber particles, hollow glass microbeads, heavy calcium, fly ash, magnesium hydroxide, quartz sand, cellulose, PP fiber, water reducing agent, air entraining agent, stabilizer. The sound insulation coating material comprises composite rubber particles and hollow glass microbeads, the rubber particles rely on relative hardness and rebound elasticity to play the roles of reflection, damping, shock absorption and sound insulation in the sound insulation coating; the hollow glass microbeads have high filling performance and significant weight reduction performance, form uniform and independent cavities in the sound insulation coating, and make the sound insulation coating have the characteristics of good sound insulation, noise reduction, low thermal conductivity, strong dispersibility, good flowability and stability.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coating materials, in particular to a sound insulation coating material and a preparation method thereof. BACKGROUND

[0002] With the continuous progress of society and the improvement of living standards, when buying a building, residents pay more and more attention to the sound insulation performance of the building. The main source of noise pollution of urban buildings is the impact on the floor, such as objects falling to the ground, dragging a chair, and the knocking of the soles of the feet when walking on the floor. For commonly used concrete floors, the sound insulation effect after the floor is impacted is poor, which deepens the contradictions between neighbors and reduces the rest quality of residents. In order to reduce noise, some residents have taken the way of laying carpets on the floor, but carpets have brought new challenges to cleaning, and not all households are suitable for laying carpets.

[0003] Therefore, there is an urgent need for a sound insulation coating material to be applied between floors to reduce noise pollution. SUMMARY

[0004] The present application aims to provide a sound insulation coating material and a preparation method thereof, which can solve the above technical problems.

[0005] The present application provides a sound insulation coating material, which is a two-component coating material including a first material and a second material.

[0006] The first material includes: A primer, B mixture, C mixture, D oxidizing agent, E reducing agent, F emulsifier, ammonia, preservative;

[0007] The A primer includes the following raw materials in parts by weight: deionized water 200-240 parts, fatty alcohol polyoxyethylene ether sodium sulfate 0.8-1.2 parts, NaHCO3 1.6-2.4 parts, (NH4)2S2O8 0.8-1.2 parts, monomer mixture 28-35 parts;

[0008] The B mixture includes the following raw materials in parts by weight: deionized water 140-170 parts, fatty alcohol polyoxyethylene ether sodium sulfate 6-8 parts, monomer mixture 450-480 parts;

[0009] The C mixture includes the following raw materials in parts by weight: (NH4)2S2O8 1.2-1.8 parts, deionized water 36-42 parts;

[0010] The D oxidizing agent includes the following raw materials in parts by weight: t-butyl hydroperoxide 1.7-2.1 parts, deionized water 19-24 parts;

[0011] The reducing agent E comprises the following raw materials in parts by weight: 1.1-1.6 parts of L ascorbic acid and 19-24 parts of deionized water;

[0012] The F emulsifier comprises the following raw materials in parts by weight: 18-26 parts of 10% isomeric C13 fatty alcohol polyoxyethylene (40) ether aqueous solution;

[0013] The monomer mixture comprises the following raw materials in parts by weight: methyl methacrylate 120-180 parts, butyl acrylate 200-260 parts, isooctyl acrylate 70-130 parts, hydroxypropyl acrylate 14-18 parts, and methacrylic acid 8-13 parts.

[0014] Material B comprises the following raw materials in parts by weight: 200-500 parts rubber granules, 50-300 parts hollow glass microspheres, 100-300 parts heavy calcium carbonate, 50-200 parts fly ash, 100-300 parts magnesium hydroxide, 100-200 parts quartz sand, 1-5 parts cellulose, 1-10 parts PP fiber, 1-5 parts water-reducing agent, 0.5-1 part air-entraining agent, and 0.5-2 parts stabilizer.

[0015] Preferably, the rubber particles have a particle size of 20-80 mesh.

[0016] Preferably, the hollow glass microspheres have a particle size of 0.5-3 mm and are hollow glass microspheres modified with a coupling agent.

[0017] Preferably, the particle size of the heavy calcium carbonate is 200-600 mesh.

[0018] Preferably, the particle size of the quartz sand is 40-140 mesh.

[0019] Preferably, the cellulose has a viscosity of 40,000 to 200,000.

[0020] Preferably, the PP fiber has a length of 3-6 mm.

[0021] A method for preparing the above-mentioned sound-insulating coating material, characterized in that the method includes the following steps:

[0022] The method for using material A is as follows:

[0023] Step A1: Prepare the monomer mixture by adding the measured monomer portions sequentially while stirring; and add the prepared monomer mixture to each raw material that requires the monomer mixture.

[0024] Step A2: Base preparation. First, add the measured amount of deionized water and start stirring. Then, add the measured amount of each ingredient from the A base preparation solution in sequence. Stir for 10 minutes and then start heating to 88±2℃. React at a constant temperature for 30 minutes.

[0025] Step A3: Drop addition. After reacting at a constant temperature for 30 minutes, start adding the mixture of B and C dropwise simultaneously. The drop addition time is 3-3.5 hours.

[0026] Step A4: Keep warm. After adding the B and C mixture portions, keep warm for 1 hour.

[0027] Step A5: Cool down. After the temperature drops below 80°C, slowly add the oxidizing agent D and the reducing agent E over 15 minutes. After the addition is complete, keep warm for another 30 minutes.

[0028] Step A6: After the reaction is complete, the emulsion obtained in step A5 is cooled to below 45°C, and emulsifier F, ammonia and preservative are added;

[0029] Step A7: Discharge;

[0030] The method for material B is as follows:

[0031] Step B1: Add 1 / 3 of the weight of rubber granules to the mixing tank, and while stirring, add another 1 / 3 of the weight of hollow glass microspheres;

[0032] Step B2: Following the method in Step B1, add each material at intervals of 5-10 minutes until all remaining rubber granules and hollow glass microspheres have been added.

[0033] Step B3: Mix the water-reducing agent, air-entraining agent and stabilizer in advance to form a mixed additive, add the mixed additive, cellulose and PP fiber, and stir for 2-3 minutes;

[0034] Step B4: Add heavy calcium carbonate and stir for 3-5 minutes, add fly ash and stir for 3-5 minutes, add magnesium hydroxide and stir for 3-5 minutes, and finally add quartz sand and stir for 20-30 minutes;

[0035] Step B5: Discharge;

[0036] The unmixed components A and B constitute the coating material; during application, components A and B of the coating material are then mixed.

[0037] Preferably, in step A3, the temperature is controlled at 86-92℃ during the dropping process.

[0038] Preferably, in step B1, the stirring speed is 200-500 r / min.

[0039] The beneficial effects of this invention are:

[0040] The sound insulation coating of this invention combines composite rubber particles and hollow glass microspheres. The rubber particles, relying on their relative hardness and resilience, play a role in reflection, damping, vibration reduction, and sound insulation in the sound insulation coating. The hollow glass microspheres have efficient filling performance and significant weight reduction performance, forming uniform and independent cavities in the sound insulation coating, enabling the sound insulation coating to have good sound insulation, noise reduction, low thermal conductivity, strong dispersibility, good fluidity, and good stability. Detailed Implementation

[0041] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, 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 application pertains.

[0042] It should be noted that the terminology used herein is for the purpose of describing particular implementations only and is not intended to limit the exemplary implementations according to this application. As used herein, the singular form includes the plural form unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this description, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0043] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] Example 1

[0045] Monomer mixture ratio: methyl methacrylate 170kg, butyl acrylate 250kg, isooctyl acrylate 120kg, hydroxypropyl acrylate 16kg, methacrylic acid 11kg;

[0046] Material A is selected from:

[0047] Base coat A: 220kg deionized water, 1kg sodium fatty alcohol polyoxyethylene ether sulfate (NOVELUTION PA89N), 2.2kg NaHCO3, 1kg (NH4)2S2O8, 33kg monomer mixture;

[0048] Mixture B: 150 kg of deionized water, 8 kg of sodium fatty alcohol polyoxyethylene ether sulfate (NOVELUTION PA89N), and 460 kg of monomer mixture;

[0049] C mixture: (NH4)2S2O8 1.6kg, deionized water 40kg;

[0050] Oxidizing agent D: 1.9 kg tert-butyl hydrogen peroxide, 22 kg deionized water;

[0051] E reducing agent: L ascorbic acid 1.4kg, deionized water 22kg;

[0052] F Emulsifier: 24 kg of 10% NOVELUTION 3400K (isomeric C13 fatty alcohol polyoxyethylene (40) ether) aqueous solution;

[0053] 1.5 kg of ammonia and 4 kg of preservative.

[0054] The preparation method of material A is as follows:

[0055] Step A1: Prepare the monomer mixture by adding the measured monomer portions sequentially while stirring; and add the prepared monomer mixture to each raw material that requires the monomer mixture.

[0056] Step A2: Base preparation. First, add the measured amount of deionized water and start stirring. Then, add the measured amount of each ingredient from the A base preparation solution in sequence. Stir for 10 minutes and then start heating to 90°C. React at a constant temperature for 30 minutes.

[0057] Step A3: Drop addition. After reacting at a constant temperature for 30 minutes, start adding mixture B and mixture C dropwise simultaneously. The drop addition time is 3.5 hours, and the temperature is controlled at 92℃ during the drop addition.

[0058] Step A4: Keep warm. After adding the B and C mixture portions, keep warm for 1 hour.

[0059] Step A5: Cool down. After the temperature drops below 80°C, slowly add the oxidizing agent D and the reducing agent E over 15 minutes. After the addition is complete, keep warm for another 30 minutes.

[0060] Step A6: After the reaction is complete, the emulsion obtained in step A5 is cooled to below 45°C, and emulsifier F, ammonia and preservative are added;

[0061] Step A7: Discharge.

[0062] Material B consists of: 500 kg rubber granules, 300 kg hollow glass microspheres, 300 kg heavy calcium carbonate, 200 kg fly ash, 300 kg magnesium hydroxide, 200 kg quartz sand, 3 kg hydroxyethyl cellulose, 3 kg PP fiber, 4 kg water-reducing agent, 0.5 kg air-entraining agent, and 1 kg stabilizer. The rubber granules have a particle size of 50 mesh, and the hollow glass microspheres have a diameter of 1 mm. These microspheres are modified with a coupling agent. The specific modification process is as follows: The hollow glass microspheres are added to ethanol and heated to 70°C. Then, the coupling agent, isopropyl triisostearoyl titanate (CAS number: 61417-49-0), is added, and the reaction is carried out for 2 hours. The mixture is then cooled to room temperature at a rate of 2°C / min. After cooling, the microspheres are removed and dried at 150°C for 1 hour to obtain the modified hollow glass microspheres. The amount of coupling agent added is 1% of the mass of the glass microspheres. The principle is as follows: In an ethanol solution, the hydroxyl groups on the surface of the hollow glass microspheres react with the Si-OH / O-Ti-O groups in the coupling agent, causing the coupling agent to be grafted onto the surface of the hollow glass microspheres, thereby improving the interfacial compatibility between the hollow glass microspheres and the organic resin. Furthermore, the aforementioned water-reducing agent is a polycarboxylate water-reducing agent, and the air-entraining agent and stabilizer are commonly used reagents in coating materials and are not specifically limited.

[0063] The preparation method of component B is as follows:

[0064] Step B1: Add 1 / 3 of the weight of rubber granules to the mixing tank, and then add 1 / 3 of the weight of hollow glass microspheres while stirring. The stirring speed is 500 r / min.

[0065] Step B2: Following the method in Step B1, add each material at intervals of 5-10 minutes until all remaining rubber granules and hollow glass microspheres have been added.

[0066] Step B3: Mix the water-reducing agent, air-entraining agent and stabilizer in advance to form a mixed additive, add the mixed additive, hydroxyethyl cellulose and PP fiber, and stir for 3 minutes;

[0067] Step B4: Add heavy calcium carbonate and stir for 5 minutes, add fly ash and stir for 5 minutes, add magnesium hydroxide and stir for 5 minutes, and finally add quartz sand and stir for 30 minutes.

[0068] Step B5: Discharge.

[0069] Example 2

[0070] Monomer mixture ratio: methyl methacrylate 120kg, butyl acrylate 200kg, isooctyl acrylate 70kg, hydroxypropyl acrylate 14kg, methacrylic acid 8kg;

[0071] Material A is selected from:

[0072] Base coat A: 200kg deionized water, 0.8kg sodium fatty alcohol polyoxyethylene ether sulfate (NOVELUTION PA89N), 1.6kg NaHCO3, 0.8kg (NH4)2S2O8, 28kg monomer mixture;

[0073] Mixture B: 140 kg of deionized water, 6 kg of sodium fatty alcohol polyoxyethylene ether sulfate (NOVELUTION PA89N), and 450 kg of monomer mixture;

[0074] C mixture: (NH4)2S2O8 1.2kg, deionized water 36kg;

[0075] Oxidizing agent D: 1.7 kg tert-butyl hydrogen peroxide, 19 kg deionized water;

[0076] E reducing agent: L ascorbic acid 1.1kg, deionized water 19kg;

[0077] F Emulsifier: 18 kg of 10% NOVELUTION 3400K (isomeric C13 fatty alcohol polyoxyethylene (40) ether) aqueous solution;

[0078] 1.5 kg of ammonia and 4 kg of preservative.

[0079] The preparation method of material A is as follows:

[0080] Step A1: Prepare the monomer mixture by adding the measured monomer portions sequentially while stirring; and add the prepared monomer mixture to each raw material that requires the monomer mixture.

[0081] Step A2: Base preparation. First, add the measured amount of deionized water and start stirring. Then, add the measured amount of each ingredient from the A base preparation solution in sequence. Stir for 10 minutes and then start heating to 90°C. React at a constant temperature for 30 minutes.

[0082] Step A3: Drop addition. After reacting at a constant temperature for 30 minutes, start adding mixture B and mixture C dropwise simultaneously. The drop addition time is 3.5 hours, and the temperature is controlled at 92℃ during the drop addition.

[0083] Step A4: Keep warm. After adding the B and C mixture portions, keep warm for 1 hour.

[0084] Step A5: Cool down. After the temperature drops below 80°C, slowly add the oxidizing agent D and the reducing agent E over 15 minutes. After the addition is complete, keep warm for another 30 minutes.

[0085] Step A6: After the reaction is complete, the emulsion obtained in step A5 is cooled to below 45°C, and emulsifier F, ammonia and preservative are added;

[0086] Step A7: Discharge.

[0087] Material B consists of: 200 kg rubber granules, 50 kg hollow glass microspheres, 100 kg heavy calcium carbonate, 50 kg fly ash, 100 kg magnesium hydroxide, 100 kg quartz sand, 3 kg hydroxyethyl cellulose, 3 kg PP fiber, 4 kg water-reducing agent, 0.5 kg air-entraining agent, and 1 kg stabilizer. The rubber granules have a particle size of 50 mesh, and the hollow glass microspheres have a diameter of 1 mm. These microspheres are modified with a coupling agent. The specific modification process is as follows: The hollow glass microspheres are added to ethanol and heated to 70°C. Then, the coupling agent, isopropyl triisostearoyl titanate (CAS number: 61417-49-0), is added, and the reaction is carried out for 2 hours. The mixture is then cooled to room temperature at a rate of 2°C / min. After cooling, the microspheres are removed and dried at 150°C for 1 hour to obtain the modified hollow glass microspheres. The amount of coupling agent added is 1% of the mass of the glass microspheres. The principle is as follows: In an ethanol solution, the hydroxyl groups on the surface of the hollow glass microspheres react with the Si-OH / O-Ti-O groups in the coupling agent, causing the coupling agent to be grafted onto the surface of the hollow glass microspheres, thereby improving the interfacial compatibility between the hollow glass microspheres and the organic resin. Furthermore, the aforementioned water-reducing agents, air-entraining agents, and stabilizers are all commonly used reagents in coating materials and are not specifically limited.

[0088] The preparation method of component B is as follows:

[0089] Step B1: Add 1 / 3 of the weight of rubber granules to the mixing tank, and then add 1 / 3 of the weight of hollow glass microspheres while stirring. The stirring speed is 200 r / min.

[0090] Step B2: Following the method in Step B1, add each material at intervals of 5-10 minutes until all remaining rubber granules and hollow glass microspheres have been added.

[0091] Step B3: Mix the water-reducing agent, air-entraining agent and stabilizer in advance to form a mixed additive, add the mixed additive, hydroxyethyl cellulose and PP fiber, and stir for 3 minutes;

[0092] Step B4: Add heavy calcium carbonate and stir for 5 minutes, add fly ash and stir for 5 minutes, add magnesium hydroxide and stir for 5 minutes, and finally add quartz sand and stir for 30 minutes.

[0093] Step B5: Discharge.

[0094] Example 3

[0095] Monomer mixture ratio: methyl methacrylate 180kg, butyl acrylate 260kg, isooctyl acrylate 130kg, hydroxypropyl acrylate 18kg, methacrylic acid 13kg;

[0096] Material A is selected from:

[0097] Base coat A: 240kg deionized water, 1.2kg sodium fatty alcohol polyoxyethylene ether sulfate (NOVELUTION PA89N), 2.4kg NaHCO3, 1.2kg (NH4)2S2O8, 35kg monomer mixture;

[0098] Mixture B: 170 kg of deionized water, 8 kg of sodium fatty alcohol polyoxyethylene ether sulfate (NOVELUTION PA89N), and 480 kg of monomer mixture;

[0099] C mixture: (NH4)2S2O8 1.8kg, deionized water 42kg;

[0100] Oxidizing agent D: 2.1 kg tert-butyl hydrogen peroxide, 24 kg deionized water;

[0101] E reducing agent: L ascorbic acid 1.6kg, deionized water 24kg;

[0102] F Emulsifier: 26 kg of 10% NOVELUTION 3400K (isomeric C13 fatty alcohol polyoxyethylene (40) ether) aqueous solution;

[0103] 1.5 kg of ammonia and 4 kg of preservative.

[0104] The preparation method of material A is as follows:

[0105] Step A1: Prepare the monomer mixture by adding the measured monomer portions sequentially while stirring; and add the prepared monomer mixture to each raw material that requires the monomer mixture.

[0106] Step A2: Base preparation. First, add the measured amount of deionized water and start stirring. Then, add the measured amount of each ingredient from the A base preparation solution in sequence. Stir for 10 minutes and then start heating to 90°C. React at a constant temperature for 30 minutes.

[0107] Step A3: Drop addition. After reacting at a constant temperature for 30 minutes, start adding mixture B and mixture C dropwise simultaneously. The drop addition time is 3.5 hours, and the temperature is controlled at 92℃ during the drop addition.

[0108] Step A4: Keep warm. After adding the B and C mixture portions, keep warm for 1 hour.

[0109] Step A5: Cool down. After the temperature drops below 80°C, slowly add the oxidizing agent D and the reducing agent E over 15 minutes. After the addition is complete, keep warm for another 30 minutes.

[0110] Step A6: After the reaction is complete, the emulsion obtained in step A5 is cooled to below 45°C, and emulsifier F, ammonia and preservative are added;

[0111] Step A7: Discharge.

[0112] Material B consists of: 500 kg rubber granules, 300 kg hollow glass microspheres, 300 kg heavy calcium carbonate, 200 kg fly ash, 300 kg magnesium hydroxide, 200 kg quartz sand, 3 kg hydroxyethyl cellulose, 3 kg PP fiber, 4 kg water-reducing agent, 0.5 kg air-entraining agent, and 1 kg stabilizer. The rubber granules have a particle size of 50 mesh, and the hollow glass microspheres have a diameter of 1 mm. These microspheres are modified with a coupling agent. The specific modification process is as follows: The hollow glass microspheres are added to ethanol and heated to 70°C. Then, the coupling agent, isopropyl triisostearoyl titanate (CAS number: 61417-49-0), is added, and the reaction is carried out for 2 hours. The mixture is then cooled to room temperature at a rate of 2°C / min. After cooling, the microspheres are removed and dried at 150°C for 1 hour to obtain the modified hollow glass microspheres. The amount of coupling agent added is 1% of the mass of the glass microspheres. The principle is as follows: In an ethanol solution, the hydroxyl groups on the surface of the hollow glass microspheres react with the Si-OH / O-Ti-O groups in the coupling agent, causing the coupling agent to be grafted onto the surface of the hollow glass microspheres, thereby improving the interfacial compatibility between the hollow glass microspheres and the organic resin. Furthermore, the aforementioned water-reducing agents, air-entraining agents, and stabilizers are all commonly used reagents in coating materials and are not specifically limited.

[0113] The preparation method of component B is as follows:

[0114] Step B1: Add 1 / 3 of the weight of rubber granules to the mixing tank, and then add 1 / 3 of the weight of hollow glass microspheres while stirring. The stirring speed is 500 r / min.

[0115] Step B2: Following the method in Step B1, add each material at intervals of 5-10 minutes until all remaining rubber granules and hollow glass microspheres have been added.

[0116] Step B3: Mix the water-reducing agent, air-entraining agent and stabilizer in advance to form a mixed additive, add the mixed additive, hydroxyethyl cellulose and PP fiber, and stir for 3 minutes;

[0117] Step B4: Add heavy calcium carbonate and stir for 5 minutes, add fly ash and stir for 5 minutes, add magnesium hydroxide and stir for 5 minutes, and finally add quartz sand and stir for 30 minutes.

[0118] Step B5: Discharge.

[0119] Example 4

[0120] This embodiment is basically the same as Embodiment 1, except that hollow glass microspheres that have not been modified by coupling agent are used.

[0121] The roles and principles of each component in the above embodiments are as follows: Hollow glass microspheres have high-efficiency filling performance and significant weight reduction performance, forming uniform and independent cavities in the sound insulation coating, enabling the sound insulation coating to achieve good sound insulation, noise reduction, low thermal conductivity, strong dispersibility, good fluidity, and good stability; relying on the relative hardness and rebound of rubber particles, they play a role in reflection, damping, vibration reduction, and sound insulation in the sound insulation coating; heavy calcium carbonate improves the workability and filling effect in the sound insulation coating; fly ash air-classified grade II, spherical particles, improve the workability and drying speed of the sound insulation coating; magnesium hydroxide has good thermal stability, high efficiency, smoke suppression, drip prevention, filling, and... Features include safety and minimal environmental pollution; quartz sand acts as aggregate filler; cellulose has good suspension, dispersion, and moisture protection properties; PP fiber has high strength and crack resistance; water-reducing agent, polycarboxylate water-reducing agent, has dispersing, wetting, and lubricating effects, reducing the amount of water added to the coating, increasing coating fluidity, and improving drying speed; air-entraining agent introduces micro-bubbles during the mixing process of the sound insulation coating, improving the coating's fluidity and cohesiveness, preventing water bleeding and segregation, and the uniform distribution of bubbles enhances the coating's sound insulation effect; stabilizer in the sound insulation coating prevents delamination, clumping, and sedimentation when the coating is not dry, and keeps the bubbles stable in the sound insulation coating.

[0122] Comparative Example 1

[0123] This embodiment is basically the same as Embodiment 1, the only difference being the preparation method of Material A:

[0124] Step A1: Prepare the monomer mixture by adding the measured monomer portions sequentially while stirring; and add the prepared monomer mixture to each raw material that requires the monomer mixture.

[0125] Step A2: Base preparation. First, add the measured amount of deionized water and start stirring. Then, add the measured amount of each ingredient from the A base preparation solution in sequence. Stir for 10 minutes and then start heating to 90°C. React at a constant temperature for 30 minutes.

[0126] Step A3: After reacting at a constant temperature for 30 minutes, pour in mixtures B and C simultaneously, keeping the temperature at 92℃ during pouring.

[0127] Step A4: Cool down. After the temperature drops below 80°C, slowly add the oxidizing agent D and the reducing agent E over 15 minutes. After the addition is complete, keep warm for another 30 minutes.

[0128] Step A5: After the reaction is complete, the emulsion obtained in step A4 is cooled to below 45°C, and emulsifier F, ammonia and preservative are added;

[0129] Step A6: Discharge.

[0130] The sound-insulating coating materials produced in Examples 1-4 and Comparative Example 1 were tested:

[0131] Testing areas: First-floor guest room floor slab; Sound source room: First-floor guest room; Receiving room: Room near the stairwell on the basement level; Floor area: 20.5m² 2 The net height of the receiving chamber is 2.5m; the volume of the receiving chamber is 51.2m³. 3 ;

[0132] The floor slab structure from bottom to top is: 120mm thick reinforced concrete slab + 30mm thick lightweight mortar + 5mm sound insulation coating material + 6mm thick crack-resistant cement self-leveling mortar.

[0133] Door and window conditions: During the test, the windows of both the sound source room and the receiving room were closed, and the doors were covered and blocked by wooden boards;

[0134] Testing standard: GB / T 19889.7-2005;

[0135] Main testing equipment: sound level meter NGT / YQ-142-1, power amplifier NGT / YQ-142-4, sound calibrator NGT / YQ-142-5, standard impactor NGT / YQ-142-6.

[0136] In addition, the equivalent thermal conductivity of the coating was tested, and the results are shown in the table below.

[0137]

[0138] The results show that the sound insulation coatings prepared in the various embodiments of the present invention have good sound insulation performance. Under the standard that the weighted standardized impact sound pressure level of residential floor slabs should not exceed 75dB, they effectively reduce noise interference from high floors.

[0139] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A sound-insulating coating material, characterized in that, The coating material is a two-component coating material comprising component A and component B; Component A includes: A. Base coat, B. Mixture, C. Mixture, D. Oxidizing agent, E. Reducing agent, F. Emulsifier, Ammonia, and Preservative; Base coat A comprises the following raw materials by weight: 200-240 parts deionized water, 0.8-1.2 parts sodium fatty alcohol polyoxyethylene ether sulfate, 1.6-2.4 parts NaHCO3, 0.8-1.2 parts (NH4)2S2O8, and 28-35 parts monomer mixture; Mixture B comprises the following raw materials in parts by weight: 140-170 parts deionized water, 6-8 parts sodium fatty alcohol polyoxyethylene ether sulfate, and 450-480 parts monomer mixture. Mixture C comprises the following raw materials by weight: 1.2-1.8 parts of (NH4)2S2O8 and 36-42 parts of deionized water; The oxidizing agent D comprises the following raw materials in parts by weight: 1.7-2.1 parts tert-butyl hydrogen peroxide and 19-24 parts deionized water; E reducing agent comprises the following raw materials in parts by weight: L ascorbic acid 1.1-1.6 parts, deionized water 19-24 parts; Emulsifier F comprises the following raw materials in parts by weight: 18-26 parts of 10% aqueous solution of isomeric C13 fatty alcohol polyoxyethylene ether; The monomer mixture includes the following raw materials in parts by weight: methyl methacrylate 120-180 parts, butyl acrylate 200-260 parts, isooctyl acrylate 70-130 parts, hydroxypropyl acrylate 14-18 parts, and methacrylic acid 8-13 parts. Material B comprises the following raw materials in parts by weight: 200-500 parts rubber granules, 50-300 parts hollow glass microspheres modified with coupling agent, 100-300 parts heavy calcium carbonate, 50-200 parts fly ash, 100-300 parts magnesium hydroxide, 100-200 parts quartz sand, 1-5 parts cellulose, 1-10 parts PP fiber, 1-5 parts water-reducing agent, 0.5-1 part air-entraining agent, and 0.5-2 parts stabilizer; the rubber granules The particle size of the granules is 20-80 mesh, the particle size of the heavy calcium carbonate is 200-600 mesh, and the particle size of the quartz sand is 40-140 mesh. The modification process is as follows: hollow glass microspheres are added to ethanol and heated to 70°C. The coupling agent is added, and the reaction is carried out for 2 hours. Then, the mixture is cooled to room temperature, and then the microspheres are taken out and dried to obtain the modified hollow glass microspheres. The amount of coupling agent added is 1% of the mass of the glass microspheres.

2. The sound-insulating coating material according to claim 1, characterized in that, The cellulose has a viscosity of 40,000 to 200,000.

3. The sound-insulating coating material according to claim 1, characterized in that, The PP fibers are 3-6 mm long.

4. A method for preparing a sound-insulating coating material as described in any one of claims 1-3, characterized in that, The method includes the following steps: The method for using material A is as follows: Step A1: Prepare the monomer mixture by adding the measured monomer portions sequentially while stirring; and add the prepared monomer mixture to each raw material that requires the monomer mixture. Step A2: Base preparation. First, add the measured amount of deionized water and start stirring. Then, add the measured amount of each ingredient from the A base preparation solution in sequence. Stir for 10 minutes and then start heating to 88±2℃. React at a constant temperature for 30 minutes. Step A3: Drop addition. After reacting at a constant temperature for 30 minutes, start adding the mixture of B and C dropwise simultaneously. The drop addition time is 3-3.5 hours. Step A4: Keep warm. After adding the B and C mixture portions, keep warm for 1 hour. Step A5: Cool down. After the temperature drops below 80°C, slowly add the oxidizing agent D and the reducing agent E over 15 minutes. After the addition is complete, keep warm for another 30 minutes. Step A6: After the reaction is complete, the emulsion obtained in step A5 is cooled to below 45°C, and emulsifier F, ammonia and preservative are added; Step A7: Discharge; The method for material B is as follows: Step B1: Add 1 / 3 of the weight of rubber granules to the mixing tank, and while stirring, add another 1 / 3 of the weight of hollow glass microspheres; Step B2: Following the method in Step B1, add each material at intervals of 5-10 minutes until all remaining rubber granules and hollow glass microspheres have been added. Step B3: Mix the water-reducing agent, air-entraining agent and stabilizer in advance to form a mixed additive, add the mixed additive, cellulose and PP fiber, and stir for 2-3 minutes; Step B4: Add heavy calcium carbonate and stir for 3-5 minutes, add fly ash and stir for 3-5 minutes, add magnesium hydroxide and stir for 3-5 minutes, and finally add quartz sand and stir for 20-30 minutes; Step B5: Discharge; The unmixed components A and B constitute the coating material; during application, components A and B of the coating material are then mixed.

5. The preparation method according to claim 4, characterized in that, In step A3, the temperature is controlled at 86-92℃ during the dropping process.

6. The preparation method according to claim 4, characterized in that, In step B1, the stirring speed is 200-500 r / min.

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