Antibacterial anti-static sound insulation coating and preparation method thereof

Abstract

The invention relates to an antibacterial anti-static sound insulation coating and a preparation method thereof, belongs to the field of chemical materials, and particularly relates to the application field of building chemical materials. The antibacterial anti-static sound insulation coating is prepared by mixing a component A and a component B in parts by weight, wherein the component A comprises 24-33 parts of a film forming substance and 18-39 parts of functional filler; a component B: 5-9 parts of a curing agent; the coating is flame-retardant, environment-friendly, waterproof, high in bonding strength and excellent in sound insulation effect. Meanwhile, the antibacterial agent is added into the components of the coating, so that the coating has good antibacterial performance and can prevent bacterium breeding, and the conductive mica powder and the carbon black are added into the components of the coating, so that the anti-static performance of the coating is effectively enhanced, dust adsorption can be reduced, and electromagnetic radiation can be prevented.

Description

Technical Field

[0001] The present invention relates to an antibacterial, antistatic and sound-insulating coating and a preparation method thereof, belonging to the field of chemical materials, specifically the application field of building chemical materials. Background Art

[0002] With the development of modern technology and industry, the complexity of the living environment has been continuously increasing. For example, the sounds of vehicles running, construction sites, square dancing, etc. In order to avoid the influence of such sounds on people's normal life, it has become inevitable to improve the sound insulation performance of buildings. Therefore, sound insulation materials are used when building houses.

[0003] Especially for indoor places such as lecture halls, electronic reading rooms, and electronic equipment rooms, the decoration effect is extremely important, and higher requirements are put forward for the decoration texture and sound insulation effect. And due to the enclosed indoor space, it is difficult for odors to convect and volatilize, and bacteria are likely to breed. Therefore, when designing the decoration, designers will focus on designing the sound insulation structure and give priority to considering environmentally friendly products. At the same time, indoor items, especially electronic equipment, are prone to accumulate dust and have electromagnetic radiation. Therefore, there is also a certain antistatic requirement. Most of the existing indoor places on the market use sound insulation materials such as sound insulation cotton, sound insulation boards, and sound insulation coatings for decoration. These sound insulation materials generally have defects such as strong odors, bacteria breeding, poor waterproof performance, flammability, and easy dust accumulation. Therefore, the present invention aims to develop a brand-new coating to overcome the deficiencies of the existing technology. Summary of the Invention

[0004] In order to overcome the above technical problems, the purpose of the present invention is to provide a brand-new antibacterial, antistatic and sound-insulating coating.

[0005] In order to achieve the above purpose, the present invention adopts the following technical scheme: An antibacterial, antistatic and sound-insulating coating, characterized in that it is made by mixing the following A component and B component according to the weight ratio: A component: 24-33 parts of film-forming substance, 18-39 parts of functional filler; B component: 5-9 parts of curing agent; The film-forming substance is made by mixing the following components according to the weight ratio: 12-18 parts of epoxy resin, 6-11 parts of special rubber, 1.5-4.5 parts of diluent, 0.8-1.2 parts of film-forming aid, 0.3-0.5 parts of surfactant, 0.2-0.4 parts of defoaming agent, 0.3-0.5 parts of leveling agent; The functional filler is made by mixing the following components in parts by weight: 2.5 - 4.5 parts of nano-silica, 2.5 - 4.5 parts of nano-titanium dioxide, 0.5 - 1.2 parts of carbon black, 0.6 - 1.5 parts of conductive mica powder, 0.5 - 7.5 parts of antibacterial agent, 1.5 - 3 parts of cast stone powder, 0.8 - 1.8 parts of expandable graphite powder, 0.3 - 0.6 parts of precipitated barium sulfate, 0.8 - 1.2 parts of tourmaline powder, 8 - 12 parts of halogen-free flame retardant; The curing agent is one or a combination of 1,2-cyclohexanediamine, acrylonitrile-modified m-xylenediamine, N-(2-aminoethyl)piperazine, and adipic dihydrazide.

[0006] Furthermore, the epoxy resin includes: one or a combination of bisphenol A epoxy resin, glycidyl p-hydroxybenzoate epoxy resin, diglycidyl endomethylenetetrahydrophthalate, and triglycidyl p-aminophenol epoxy resin.

[0007] Furthermore, the special rubber is one or a combination of polysulfide rubber, nitrile rubber, polyurethane rubber, styrene-butadiene rubber, chlorosulfonated polyethylene rubber, and ethylene-propylene rubber; The diluent is one or a combination of resorcinol diglycidyl ether, neopentyl glycol diglycidyl ether, glycidyl neodecanoate, and glycidyl methacrylate; The film-forming aid is one or a combination of dicyclopentenyl oxyethyl acrylate, diisopropyl adipate, ethyl 3-ethoxypropionate, propylene glycol phenyl ether, and dipropylene glycol monomethyl ether; The surfactant is one or a combination of sodium dioctyl sulfosuccinate, triethanolamine soap, sulfated castor oil, cetearyl glucoside, and glycerol monostearate.

[0008] Furthermore, the defoaming agent is one or a combination of end-group esterified polyether derivatives, polydimethylsiloxane, and GPES-type polyether.

[0009] Furthermore, the leveling agent is made by mixing the following components in parts by weight: 0.1 - 0.3 parts of fluorocarbon-modified polyacrylate copolymer, 0.1 - 0.3 parts of dipropylene glycol methyl ether acetate.

[0010] Furthermore, the particle size of the nano-silica is 20 - 500 nm, the particle size of the nano-titanium dioxide is 20 - 500 nm, the particle size of the carbon black is 100 - 500 nm, the particle size of the conductive mica powder is 100 - 300 nm, the particle size of the antibacterial agent is 20 - 500 nm, the particle size of the cast stone powder is 1 - 20 μm, the particle size of the expandable graphite powder is 200 - 800 nm, the particle size of the precipitated barium sulfate is 1 - 5 μm, and the particle size of the tourmaline powder is 1 - 5 μm. Further, the halogen-free flame retardant is one or a combination of several of ammonium polyphosphate, polyphosphoryl cyanuric amide, sodium melamine phosphate, and polyborosiloxane.

[0011] A preparation method of an antibacterial, antistatic, and sound-insulating coating, the method comprising the following steps: First step, prepare the film-forming substance: Weigh 12 - 18 parts by weight of epoxy resin, 6 - 11 parts of special rubber, 1.5 - 4.5 parts of diluent, mix and stir for 15 - 20 min at a stirring rate of 100 - 200 r / min, then add 0.8 - 1.2 parts of film-forming auxiliary, 0.3 - 0.5 parts of surfactant, 0.2 - 0.4 parts of defoamer, and 0.3 - 0.5 parts of leveling agent, and continue to stir for 20 - 30 min to obtain the film-forming substance.

[0012] Second step, prepare the functional filler: Weigh 2.5 - 4.5 parts by weight of nano-silica, 2.5 - 4.5 parts of nano-titanium dioxide, 0.5 - 1.2 parts of carbon black, 0.6 - 1.5 parts of conductive mica powder, 0.5 - 7.5 parts of antibacterial agent, 1.5 - 3 parts of cast stone powder, 0.8 - 1.8 parts of expandable graphite powder, 0.3 - 0.6 parts of precipitated barium sulfate, and 0.8 - 1.2 parts of tourmaline powder, and 8 - 12 parts of halogen-free flame retardant. Add all of them into a V-type mixer and mix for 20 - 30 min at a mixing rate of 20 - 28 r / min to obtain the functional filler.

[0013] Third step, mix the film-forming substance and the functional filler and stir for 15 - 20 min at a stirring rate of 100 - 200 r / min, then pour it into a conical mill, and obtain component A after sufficient grinding.

[0014] Fourth step, mix component A and component B and stir for 15 - 20 min at a stirring rate of 150 - 300 r / min to obtain the antibacterial, antistatic, and sound-insulating coating.

[0015] Further, the antibacterial agent is prepared by the following method: Mix 1 - 80 g of bentonite and 5 - 900 ml of a dimethyl sulfoxide solution with a mass percentage of 0.5 - 80% and stir for 12 - 72 h. Then, wash twice with pure water and once with ethanol, and dry at 38 - 80°C. Mix the dried bentonite / dimethyl sulfoxide complex and sodium dodecyl sulfate in a mass ratio of 200:1 - 1:1 and stir evenly. Add 5 - 65 ml of a zinc ammonia solution with a concentration of 0.001 - 0.5 mol / L, and stir again for 12 - 36 hours. Add NaOH and continue to stir evenly according to a molar ratio of 0:1 - 6:1 with the zinc salt. Dry at 60°C - 850°C for 10 min - 24 h, take out and mechanically grind in a Fritsch planetary high-energy ball mill using steel balls with a diameter of 15 mm at a rotation speed of 30 - 500 r / min for 2 - 36 hours. The weight ratio of the balls to the powder is about 18:1. Anneal the ground powder in an alumina crucible for 0.5 - 6 hours at a temperature between 80 and 600°C. Obtain the antibacterial agent.

[0016] Further, the polyphosphoryl cyanamide urea is prepared by mixing and reacting the following components by weight: Weigh 9.5 parts of phosphoric acid and 2.8 parts of melamine, add them to a stainless steel reaction kettle and stir, heat to 148°C, and react for 2 hours to obtain a colorless transparent liquid. Then add 11.5 parts of urea, quickly raise the temperature to maintain 148°C, and continuously stir for 1.5 hours to obtain a white solid. Naturally cool to room temperature, crush, and pass through an 800-mesh sieve.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: While having excellent sound insulation performance, it also has antibacterial and antistatic effects. The specific advantages are as follows: (1) Excellent sound insulation effect. The epoxy resin system used contains a large number of epoxy groups and hydroxyl groups, and after film formation, it has strong cohesion and a very dense molecular structure. The special fillers used can greatly improve the mechanical strength, water resistance, wear resistance, density, flame retardancy, and weather resistance of the resin. The fine particles are evenly dispersed in the resin and form a very dense composite coating after cross-linking reaction, which can effectively block the propagation of sound and reduce the transmitted sound wave energy, thus achieving an excellent sound insulation effect.

[0018] (2) Broad-spectrum antibacterial with excellent antibacterial effect. It has excellent antibacterial effects against bacteria, fungi, and molds such as Escherichia coli, Staphylococcus aureus, Klebsiella pneumoniae, Pseudomonas aeruginosa, Candida albicans, Aspergillus niger, and Fusarium oxysporum. According to the requirements of the GB / T 21866 - 2008 standard, a third-party institution tested that the antibacterial rate of the antibacterial coating prepared by the present invention > 99.99%.

[0019] (3)Excellent antistatic performance. It has the following effects: a. Reducing dust adsorption; b. Avoiding the electric shock feeling after human contact; c. Preventing electromagnetic radiation. For conventional civil buildings, furniture materials such as wood, fiber, plastic, and rubber also require antistatic treatment to reduce dust adsorption on the surface.

[0020] (4)Extremely strong adhesion. The epoxy groups, hydroxyl groups, and polar groups such as ether bonds, ester bonds, and amine bonds with extremely high activity in the used epoxy resin curing system enable the epoxy resin molecules to generate an adsorption force with the contact surface. At the same time, the epoxy groups can form chemical bonds with the metal surface containing active hydrogen, thus endowing it with extremely high bonding strength. Coupled with the mechanical properties such as high cohesive strength given by groups such as benzene rings and isopropyl groups, it has strong adhesion to various metal and non-metal materials such as cement, stainless steel, aluminum plates, glass, wooden boards, ceramics, and fabrics. Therefore, it can also be used in combination with decorative materials such as tiles and glass by sticking. Specific implementation manners

[0021] In order to make the purpose, technical solutions and advantages of the present application clearer and more understandable, the following describes and explains the present application in combination with embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application. Based on the embodiments provided by the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope protected by the present application.

[0022] Obviously, although the efforts made in this development process may be complex and lengthy, for those of ordinary skill in the art related to the content disclosed in the present application, some design, manufacturing or production changes based on the technical content disclosed in the present application are only conventional technical means and should not be understood as the content disclosed in the present application being insufficient.

[0023] When "embodiment" is mentioned in the present application, it means that the specific features, structures or characteristics described in combination with the embodiment can be included in at least one embodiment of the present application. The appearance of this phrase in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those of ordinary skill in the art explicitly and implicitly understand that the embodiments described in the present application can be combined with other embodiments without conflict.

[0024] The present invention provides an antibacterial, antistatic and sound-insulating coating, which is made by mixing the following components in parts by weight: Component A: 24 - 33 parts of film-forming substance, 18 - 39 parts of functional filler Component B: 5 - 9 parts of curing agent Among them, the film-forming substance is made by mixing the following components in parts by weight: 12-18 parts of epoxy resin, 6-11 parts of special rubber, 1.5-4.5 parts of diluent, 0.8-1.2 parts of film-forming aid, 0.3-0.5 parts of surfactant, 0.2-0.4 parts of defoamer, and 0.3-0.5 parts of leveling agent. The functional filler is made by mixing the following components in parts by weight: 2.5-4.5 parts of nano-silica, 2.5-4.5 parts of nano-titanium dioxide, 0.5-1.2 parts of carbon black, 0.6-1.5 parts of conductive mica powder, 0.5-7.5 parts of antibacterial agent, 1.5-3 parts of cast stone powder, 0.8-1.8 parts of expandable graphite powder, 0.3-0.6 parts of precipitated barium sulfate, 0.8-1.2 parts of tourmaline powder, and 8-12 parts of halogen-free flame retardant. The curing agent is one or a combination of several of 1,2-cyclohexanediamine, acrylonitrile-modified m-xylenediamine, N-aminoethylpiperazine, and adipic dihydrazide.

[0025] The epoxy resin is one or a combination of several of bisphenol A epoxy resin, p-hydroxybenzoic acid glycidyl ester epoxy resin, endomethylenetetrahydrophthalic acid diglycidyl ester, and p-aminophenol triglycidyl epoxy resin.

[0026] The special rubber is one or a combination of several of polysulfide rubber, nitrile rubber, polyurethane rubber, styrene-butadiene rubber, chlorosulfonated polyethylene rubber, and ethylene-propylene rubber.

[0027] The diluent is one or a combination of several of resorcinol diglycidyl ether, neopentyl glycol diglycidyl ether, glycidyl neodecanoate, and glycidyl methacrylate.

[0028] The film-forming aid is one or a combination of several of dicyclopentenyl oxyethyl acrylate, diisopropyl adipate, ethyl 3-ethoxypropionate, propylene glycol phenyl ether, and dipropylene glycol monomethyl ether.

[0029] The surfactant is one or a combination of several of sodium dioctyl sulfosuccinate, triethanolamine soap, sulfated castor oil, cetearyl glucoside, and glycerol monostearate.

[0030] The defoamer is one or a combination of several of end-group esterified polyether derivatives, polydimethylsiloxane, and GPES-type polyether.

[0031] The leveling agent is made by mixing the following components in parts by weight: 0.1-0.3 parts of fluorocarbon-modified polyacrylate copolymer and 0.1-0.3 parts of dipropylene glycol methyl ether acetate.

[0032] The particle size of the nano-silica is 20 - 500 nm, the particle size of the nano-titanium dioxide is 20 - 500 nm, the carbon black is 100 - 500 nm, the electrically conductive mica powder is 100 - 300 nm, the particle size of the antibacterial agent is 20 - 500 nm, the particle size of the cast stone powder is 1 - 20 um, the expandable graphite powder is 200 - 800 nm, the precipitated barium sulfate is 1 - 5 um, and the tourmaline powder is 1 - 5 um. The antibacterial agent is prepared by the following method: Mix 1 - 80 g of bentonite and 5 - 900 ml of a dimethyl sulfoxide solution with a mass percentage of 0.5 - 80% and stir for 12 - 72 h. Then, wash twice with pure water and once with ethanol, and dry at 38 - 80 °C. Mix the dried bentonite / dimethyl sulfoxide complex and sodium dodecyl sulfate in a mass ratio of 200:1 - 1:1 and stir evenly. Add 5 - 65 ml of a zinc ammonia solution with a concentration of 0.001 - 0.5 mol / L and stir again for 12 - 36 hours. Add NaOH and continue to stir evenly according to a molar ratio of 0:1 - 6:1 with the zinc salt. Dry at 60 °C - 850 °C for 10 min - 24 h, take out and mechanically grind the powder in a Fritz planetary high-energy ball mill, use steel balls with a diameter of 15 mm, rotate at a speed of 30 - 500 r / min, and grind for 2 - 36 hours. The weight ratio of the ball to the powder is about 18:1. Anneal the ground powder in an alumina crucible for 0.5 - 6 hours at a temperature between 80 and 600 °C. Obtain the antibacterial agent.

[0033] The halogen-free flame retardant is one or a combination of ammonium polyphosphate, polyphosphoryl cyanuric acid amide, sodium melamine phosphate, and polyborosiloxane.

[0034] The polyphosphoryl cyanuric acid amide is prepared by mixing and reacting the following components by weight: Weigh 9.5 parts of phosphoric acid and 2.8 parts of melamine, add them to a stainless steel reaction kettle and stir, heat to 148 °C, and react for 2 hours to obtain a colorless transparent liquid. Then add 11.5 parts of urea, quickly raise the temperature to maintain 148 °C, and continuously stir for 1.5 hours to obtain a white solid. Naturally cool to room temperature, crush, and pass through an 800-mesh sieve.

[0035] The specific preparation method includes the following steps: First step, prepare the film-forming substance: Weigh 12 - 18 parts of epoxy resin, 6 - 11 parts of special rubber, and 1.5 - 4.5 parts of diluent by weight, mix and stir for 15 - 20 min at a stirring rate of 100 - 200 r / min, then add 0.8 - 1.2 parts of film-forming aid, 0.3 - 0.5 parts of surfactant, 0.2 - 0.4 parts of defoaming agent, and 0.3 - 0.5 parts of leveling agent, and continue to stir for 20 - 30 min to obtain the film-forming substance.

[0036] Step 2: Prepare the functional filler: Weigh 2.5 - 4.5 parts of nano - silica, 2.5 - 4.5 parts of nano - titanium dioxide, 0.5 - 1.2 parts of carbon black, 0.6 - 1.5 parts of conductive mica powder, 0.5 - 7.5 parts of antibacterial agent, 1.5 - 3 parts of cast stone powder, 0.8 - 1.8 parts of expandable graphite powder, 0.3 - 0.6 parts of precipitated barium sulfate, 0.8 - 1.2 parts of tourmaline powder, and 8 - 12 parts of halogen - free flame retardant by weight. Add all of them into a V - type mixer and mix for 20 - 30 min at a mixing rate of 20 - 28 r / min to obtain the functional filler.

[0037] Step 3: Mix the film - forming substance and the functional filler and stir for 15 - 20 min at a stirring rate of 100 - 200 r / min, then pour it into a conical mill. After sufficient grinding, component A is obtained.

[0038] Step 4: Mix and stir component A and component B for 15 - 20 min at a stirring rate of 150 - 300 r / min to obtain the antibacterial, antistatic and sound - insulating coating. Example 1

[0039] Step 1: Prepare the film - forming substance: Weigh 6 parts of bisphenol A epoxy resin, 10 parts of p - aminophenol triglycidyl ether epoxy resin, 2 parts of nitrile rubber, 4 parts of styrene - butadiene rubber, 2 parts of resorcinol diglycidyl ether, 0.5 part of neopentyl glycol diglycidyl ether by weight. After mixing, stir for 15 min at a stirring rate of 100 r / min, then add 0.4 part of 3 - ethoxypropionate, 0.4 part of propylene glycol phenyl ether, 0.1 part of triethanolamine soap, 0.3 part of sulfated castor oil, 0.2 part of polydimethylsiloxane, 0.1 part of fluorocarbon - modified polyacrylate copolymer, and 0.3 part of dipropylene glycol methyl ether acetate. Continue to stir for 20 min to obtain the film - forming substance.

[0040] Step 2: Prepare the functional filler: Weigh 2.5 parts of nano - silica (500 nm), 3.5 parts of nano - titanium dioxide (500 nm), 0.5 part of carbon black (500 nm), 0.6 part of conductive mica powder (300 nm), 0.5 part of antibacterial agent (100 nm), 1.5 parts of cast stone powder (5 um), 1.8 parts of expandable graphite powder (800 nm), 0.3 part of precipitated barium sulfate (5 um), 0.8 part of tourmaline powder (5 um), 7 parts of polyphosphoryl cyanamide urea, and 4 parts of melamine sodium phosphate by weight. Add all of them into a V - type mixer and mix for 30 min at a mixing rate of 28 r / min to obtain the functional filler.

[0041] Step 3: Mix the film - forming substance and the functional filler and stir for 15 min at a stirring rate of 200 r / min, then pour it into a conical mill. After sufficient grinding, component A is obtained.

[0042] Step 4: Mix component A and component B (3 parts of 1,2-cyclohexanediamine and 3 parts of acrylonitrile-modified m-xylylenediamine) and stir for 20 min at a stirring rate of 300 r / min to obtain the antibacterial, antistatic and sound-insulating coating. Example 2

[0043] Step 1: Prepare the film-forming substance: Weigh 10 parts of bisphenol A epoxy resin, 2 parts of endomethylenetetrahydrophthalic acid diglycidyl ester, 6 parts of p-aminophenol triglycidyl epoxy resin, 2 parts of polysulfide rubber, 4 parts of nitrile rubber, 2 parts of ethylene-propylene rubber, 1.5 parts of neopentyl glycol diglycidyl ether, and 1 part of glycidyl methacrylate. After mixing, stir for 15 min at a stirring rate of 200 r / min, then add 0.4 part of diisopropyl adipate, 0.5 part of ethyl 3-ethoxypropionate, 0.1 part of sodium dioctyl sulfosuccinate, 0.1 part of sulfated castor oil, 0.1 part of cetearyl glucoside, 0.1 part of fluorocarbon-modified polyacrylate copolymer, and 0.3 part of dipropylene glycol methyl ether acetate, and continue to stir for 20 min to obtain the film-forming substance.

[0044] Step 2: Prepare the functional filler: Weigh 3.5 parts of nano-silica (500 nm), 2.5 parts of nano-titanium dioxide (500 nm), 0.8 part of carbon black (300 nm), 0.8 part of conductive mica powder (200 nm), 1.5 parts of antibacterial agent (50 nm), 2.5 parts of cast stone powder (3 um), 1.2 parts of expandable graphite powder (800 nm), 0.5 part of precipitated barium sulfate (5 um), 1 part of tourmaline powder (5 um), 3 parts of ammonium polyphosphate, 3 parts of melamine sodium phosphate, and 5 parts of polyphosphoryl cyanamide urea. Add all of them into a V-type mixer and mix for 20 min at a mixing rate of 20 r / min to obtain the functional filler.

[0045] Step 3: Mix the film-forming substance and the functional filler and stir for 20 min at a stirring rate of 150 r / min, then pour them into a conical mill and grind thoroughly to obtain component A.

[0046] Step 4: Mix component A and component B (4 parts of acrylonitrile-modified m-xylylenediamine and 3 parts of adipic dihydrazide) and stir for 15 min at a stirring rate of 200 r / min to obtain the antibacterial, antistatic and sound-insulating coating. Example 3

[0047] Step 1: Prepare the film-forming substance: Weigh 10 parts of bisphenol A epoxy resin, 6 parts of glycidyl p-hydroxybenzoate epoxy resin, 2 parts of polysulfide rubber, 4 parts of nitrile rubber, and 2 parts of chlorosulfonated polyethylene rubber by weight. Also, weigh 1.5 parts of neopentyl glycol diglycidyl ether, 0.5 parts of glycidyl neodecanoate, and 0.5 parts of glycidyl methacrylate. After mixing, stir for 15 minutes at a stirring rate of 200 r / min. Then, add 0.5 parts of dicyclopentenyloxyethyl acrylate, 0.5 parts of diisopropyl adipate, 0.1 parts of sodium dioctyl sulfosuccinate, 0.1 parts of cetearyl glucoside, 0.1 parts of glycerol monostearate, 0.2 parts of fluorocarbon-modified polyacrylate copolymer, and 0.2 parts of dipropylene glycol methyl ether acetate. Continue stirring for 20 minutes to obtain the film-forming substance.

[0048] Step 2: Prepare the functional filler: Weigh 3.5 parts of nano-silica (20 nm), 2.5 parts of nano-titanium dioxide (20 nm), 1.2 parts of carbon black (100 nm), 1.5 parts of conductive mica powder (150 nm), 7.5 parts of antibacterial agent (150 nm), 3 parts of cast stone powder (1 μm), 0.8 parts of expandable graphite powder (200 nm), 0.5 parts of precipitated barium sulfate (1 μm), 1 part of tourmaline powder (1 μm), 3 parts of ammonium polyphosphate, 3 parts of melamine sodium phosphate, and 5 parts of polyborosiloxane by weight. Add all of them into a V-type mixer and mix for 20 minutes at a mixing rate of 20 r / min to obtain the functional filler.

[0049] Step 3: Mix the film-forming substance and the functional filler and stir for 20 minutes at a stirring rate of 150 r / min. Then pour it into a conical mill and grind it thoroughly to obtain Component A.

[0050] Step 4: Mix Component A and Component B (4 parts of 1,2-cyclohexanediamine and 2 parts of N-(2-aminoethyl)piperazine) and stir for 15 minutes at a stirring rate of 200 r / min to obtain the antibacterial, antistatic, and sound-insulating coating.

[0051] Table 1 shows the comparison of various properties between Examples 1, 2, and 3 of the antibacterial, antistatic, and sound-insulating coating of the present invention and Conventional Sound-insulating Coatings 1, 2, and 3 on the market.

[0052] The sound insulation effect and residential sound insulation requirements are tested according to the following national standards: GB / T50121-2005 "Standard for Evaluation of Building Sound Insulation", GB 50118-2010 "Code for Sound Insulation Design of Civil Buildings", GB 50368-2005 "Code for Residential Buildings".

[0053] The antibacterial rate of the antibacterial coating is tested according to the GB / T 21866-2008 standard.

[0054] Table 1: Comparison Table of Technical Features of Each Example

[0055] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as falling within the scope described in this specification.

[0056] The above-described embodiments only express several implementation manners of the present application, and the description thereof is relatively specific and detailed. However, it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. An antibacterial, antistatic and sound-insulating coating, characterized in that, The antibacterial, antistatic and sound-insulating coating is prepared by mixing the following component A and component B according to the weight ratio: Component A: 24 - 33 parts of film-forming substance, 18 - 39 parts of functional filler; Component B: 5 - 9 parts of curing agent; The film-forming substance is prepared by mixing the following components according to the weight ratio: 12 - 18 parts of epoxy resin, 6 - 11 parts of special rubber, 1.5 - 4.5 parts of diluent, 0.8 - 1.2 parts of film-forming aid, 0.3 - 0.5 parts of surfactant, 0.2 - 0.4 parts of defoaming agent, 0.3 - 0.5 parts of leveling agent; The functional filler is prepared by mixing the following components according to the weight ratio: 2.5 - 4.5 parts of nano-silica, 2.5 - 4.5 parts of nano-titanium dioxide, 0.5 - 1.2 parts of carbon black, 0.6 - 1.5 parts of conductive mica powder, 0.5 - 7.5 parts of antibacterial agent, 1.5 - 3 parts of cast stone powder, 0.8 - 1.8 parts of expandable graphite powder, 0.3 - 0.6 parts of precipitated barium sulfate, 0.8 - 1.2 parts of tourmaline powder, 8 - 12 parts of halogen-free flame retardant; The curing agent is one or several compounds of 1,2-cyclohexanediamine, acrylonitrile-modified m-xylenediamine, N-aminoethylpiperazine, adipic dihydrazide.

2. The antibacterial, antistatic and sound-insulating coating according to claim 1, wherein: The epoxy resin includes one or several compounds of bisphenol A epoxy resin, glycidyl p-hydroxybenzoate epoxy resin, diglycidyl endomethylenetetrahydrophthalate, p-aminophenol triglycidyl epoxy resin.

3. The antibacterial, antistatic and sound-insulating coating according to claim 1, wherein: The special rubber is one or several compounds of polysulfide rubber, nitrile rubber, polyurethane rubber, styrene-butadiene rubber, chlorosulfonated polyethylene rubber, ethylene-propylene rubber; The diluent is one or several compounds of resorcinol diglycidyl ether, neopentyl glycol diglycidyl ether, glycidyl neodecanoate, glycidyl methacrylate; The film-forming aid is one or several compounds of dicyclopentenyl oxyethyl acrylate, diisopropyl adipate, ethyl 3-ethoxypropionate, propylene glycol phenyl ether, dipropylene glycol monomethyl ether; The surfactant is one or several compounds of sodium dioctyl sulfosuccinate, triethanolamine soap, sulfated castor oil, cetearyl glucoside, glycerol monostearate.

4. The antibacterial, antistatic and sound-insulating coating according to claim 1, wherein: The defoaming agent is one or several compounds of end-capped esterified polyether derivative, polydimethylsiloxane, GPES-type polyether.

5. The antibacterial, antistatic and sound-insulating coating according to claim 1, wherein: The leveling agent is prepared by mixing the following components according to the weight ratio: 0.1 - 0.3 parts of fluorocarbon-modified polyacrylate copolymer, 0.1 - 0.3 parts of dipropylene glycol methyl ether acetate.

6. The antibacterial, antistatic and sound-insulating coating according to claim 1, wherein: The particle size of the nano-silica is 20 - 500 nm, the particle size of the nano-titanium dioxide is 20 - 500 nm, the particle size of the carbon black is 100 - 500 nm, the particle size of the conductive mica powder is 100 - 300 nm, the particle size of the antibacterial agent is 20 - 500 nm, the particle size of the cast stone powder is 1 - 20 μm, the particle size of the expandable graphite powder is 200 - 800 nm, the particle size of the precipitated barium sulfate is 1 - 5 μm, and the particle size of the tourmaline powder is 1 - 5 μm.

7. The antibacterial and antistatic sound insulation coating according to claim 1, wherein: The halogen-free flame retardant is one or a combination of ammonium polyphosphate, polyphosphoryl cyanuric acid amide, sodium melamine phosphate, and polyborosiloxane.

8. A preparation method of an antibacterial, antistatic and sound-insulating coating, characterized in that It includes the following steps: The first step is to prepare the film-forming substance: Weigh 12 - 18 parts by weight of epoxy resin, 6 - 11 parts by weight of special rubber, and 1.5 - 4.5 parts by weight of diluent. After mixing, stir for 15 - 20 min at a stirring rate of 100 - 200 r / min. Then add 0.8 - 1.2 parts by weight of film-forming aid, 0.3 - 0.5 parts by weight of surfactant, 0.2 - 0.4 parts by weight of defoamer, and 0.3 - 0.5 parts by weight of flow agent, and continue to stir for 20 - 30 min to obtain the film-forming substance. The second step is to prepare the functional filler: Weigh 2.5 - 4.5 parts by weight of nano-silica, 2.5 - 4.5 parts by weight of nano-titanium dioxide, 0.5 - 1.2 parts by weight of carbon black, 0.6 - 1.5 parts by weight of conductive mica powder, 0.5 - 7.5 parts by weight of antibacterial agent, 1.5 - 3 parts by weight of cast stone powder, 0.8 - 1.8 parts by weight of expandable graphite powder, 0.3 - 0.6 parts by weight of precipitated barium sulfate, 0.8 - 1.2 parts by weight of tourmaline powder, and 8 - 12 parts by weight of halogen-free flame retardant. Add all of them into a V-type mixer and mix for 20 - 30 min at a mixing rate of 20 - 28 r / min to obtain the functional filler. The third step is to mix the film-forming substance and the functional filler and stir for 15 - 20 min at a stirring rate of 100 - 200 r / min, then pour it into a conical mill, and after sufficient grinding, obtain component A. The fourth step is to mix component A and component B and stir for 15 - 20 min at a stirring rate of 150 - 300 r / min to obtain the antibacterial and antistatic sound insulation coating.

9. The preparation method of the antibacterial and antistatic sound insulation coating according to claim 8, wherein: The antibacterial agent is prepared by the following method: Mix 1 - 80 g of bentonite and 5 - 900 ml of a dimethyl sulfoxide solution with a mass percentage of 0.5 - 80% and stir for 12 - 72 h; Wash it twice with pure water and once with ethanol, and dry it at 38 - 80 °C; Mix the dried bentonite / dimethyl sulfoxide complex and sodium dodecyl sulfate in a mass ratio of 200:1 - 1:1 and stir evenly. Add 5 - 65 ml of a zinc ammonia solution with a concentration of 0.001 - 0.5 mol / L, and stir again for 12 - 36 hours; Add NaOH and continue to stir evenly according to a molar ratio of 0:1 - 6:1 to the zinc salt; Dry it at 60 °C - 850 °C for 10 min - 24 h, take it out and perform mechanical grinding in a Fritz star high-energy ball mill. Use steel balls with a diameter of 15 mm and grind at a rotation speed of 30 - 500 r / min for 2 - 36 hours. The weight ratio of the ball to the powder is about 18:1; The ground powder is annealed in an alumina crucible for 0.5 - 6 hours at a temperature between 80 and 600 °C to obtain the antibacterial agent.

10. The preparation method of the antibacterial, antistatic and sound-insulating coating according to claim 8, characterized in that: The polyphosphoryl cyanamide urea is prepared by mixing and reacting the following components by weight: Weigh 9.5 parts of phosphoric acid and 2.8 parts of melamine, add them to a stainless steel reaction kettle and stir, heat to 148 °C, and react for 2 hours to obtain a colorless transparent liquid; Then add 11.5 parts of urea, quickly raise the temperature to maintain 148 °C, and continuously stir for 1.5 hours to obtain a white solid; Cool naturally to room temperature, pulverize, and pass through an 800-mesh sieve.

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