Preparation method of high-sound-absorption composite wall material

Abstract

The invention relates to the technical field of wall sound insulation materials, in particular to a preparation method of a high-sound-absorption composite wall material which comprises the following raw materials in parts by weight: 50-60 parts of a base material, 20-30 parts of an additive, 10-15 parts of an adhesive, 8-10 parts of a flame retardant, 10-15 parts of deionized water, 10-12 parts of glass wool, 6-8 parts of rock wool and 6-8 parts of an additive solution. According to the invention, the calcined illite forms a porous structure, the interlayer spacing is enlarged, when sound waves enter tiny pores of the porous structure, air molecules vibrate at a high speed in a narrow channel, the speed of air molecules close to pore walls is reduced, friction between the molecules and friction between the molecules and the pore walls consume sound wave energy, and sound waves with different frequencies are matched; the carbon black particles fill gaps of rubber molecular chains, so that pore closing and molecular energy absorption caused by thermal expansion are avoided, sound wave transmission is blocked, the overall sound insulation index is improved, and the sound absorption performance of the material is remarkably improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of wall sound insulation materials, in particular to a preparation method of a strong sound absorption composite wall material. BACKGROUND

[0002] The composite wall material is a multifunctional building component, and core functions such as sound insulation, heat preservation, fire prevention and light weight are realized through structure optimization and material compounding, and the composite wall material is widely applied to modern buildings, industrial facilities and special scenes.

[0003] In the prior art, the single structure of the base wall material lacks a porous layer, sound waves are directly reflected instead of being absorbed, sound insulation effect is poor, the base wall material is suddenly cracked and the structure is collapsed due to evaporation of internal moisture caused by heat, and fireproof performance is poor. Based on this, the application provides a preparation method of a strong sound absorption composite wall material. SUMMARY

[0004] The application aims to provide a preparation method of a strong sound absorption composite wall material, the strong sound absorption composite wall material prepared by the application has good flame retardation and excellent hardness, and the use performance of the strong sound absorption composite wall material is effectively improved.

[0005] To achieve the above-mentioned purpose, the application provides the following technical scheme: a strong sound absorption composite wall material, which comprises the following raw materials by weight: 50-60 parts of a base material, 20-30 parts of an additive, 10-15 parts of a bonding agent, 8-10 parts of a flame retardant, 10-15 parts of deionized water, 10-12 parts of glass wool, 6-8 parts of rock wool and 6-8 parts of an additive liquid. The base material is prepared, and the raw materials of the base material include lignin sulfonate, cement, sandstone, coal dust ash, silica ash and diatom ooze. The additive is prepared, and the raw materials of the additive include illite, carbon black and butyl rubber. The bonding agent is prepared, and the raw materials of the bonding agent include glass fiber, ethanol, epoxy resin and polyether amine. The flame retardant is prepared, and the raw materials of the flame retardant include aluminum hydroxide, ethanol and expanded graphite. The additive liquid is prepared, and the raw materials of the additive liquid include polyethylene glycol, nano silicon dioxide, deionized water and sodium carboxymethyl cellulose.

[0006] Preferably, the preparation method of the base material is as follows: lignin sulfonate, cement, sandstone, coal dust ash, silica ash and diatom ooze are put into a stirrer, the stirring speed of the stirrer is set to 200-300 rpm, and the processing time is 40-60 min to obtain the base material, wherein the mass ratio of lignin sulfonate, cement, sandstone, coal dust ash, silica ash and diatom ooze is 1: (50-70): (30-40): (30-40): (20-30): (20-30).

[0007] Preferably, the preparation method of the additive comprises the following steps: Step 1: The illite is crushed by a crusher to a particle size of 50-80 μm, and then placed in a resistance furnace, the resistance furnace temperature is set to 400-500 ℃, and the treatment time is 10-20 min. The obtained product is placed in an ultrasonic crusher, the ultrasonic crusher is set to a frequency of 40-45 kHz, and the treatment time is 60-80 min to obtain a first powder; Step 2: The carbon black is placed in a drying oven, the drying oven is set to a temperature of 70-90 ℃, and the treatment time is 60-80 min to obtain a second powder; Step 3: The first powder, the second powder, and the butyl rubber are placed in an open mill, the open mill is set to a temperature of 120-140 ℃, and the treatment time is 20-40 min. The obtained product is subjected to tabletting treatment, the tablet thickness is 5-8 mm, and cold water treatment is performed to 30-40 ℃ to obtain the additive.

[0008] Preferably, the mass ratio of the carbon black, the illite, and the butyl rubber is 1:(5-10):(10-20).

[0009] Preferably, the preparation method of the adhesive is as follows: the glass fiber and ethanol are placed in a stirrer, the stirrer is set to a stirring speed of 200-400 rpm, and the treatment time is 40-60 min. The obtained product is placed in a drying oven, the drying oven is set to a temperature of 70-90 ℃, and the treatment time is 60-80 min. The epoxy resin, ethanol, polyether amine, and glass fiber are placed in a stirrer, the stirrer is set to a stirring speed of 300-500 rpm, and the treatment time is 50-70 min to obtain the adhesive.

[0010] Preferably, the mass ratio of the glass fiber, ethanol, epoxy resin, and polyether amine is 1:(20-30):(5-7):(1-2).

[0011] Preferably, the preparation method of the flame retardant is as follows: the aluminum hydroxide and ethanol are placed in a stirrer, the stirrer is set to a stirring speed of 200-400 rpm, and the treatment time is 40-60 min. The obtained product is placed in a drying oven, the drying oven is set to a temperature of 70-90 ℃, and the treatment time is 60-80 min. The obtained product and the expanded graphite are placed in a double-screw extruder, the double-screw extruder is set to a stirring speed of 200-300 rpm, and the treatment time is 20-40 min. The obtained product is placed in a vulcanizing machine, the vulcanizing machine is set to a temperature of 160-180 ℃, a pressure of 10-12 MPa, and the treatment time is 10-20 min to obtain the flame retardant.

[0012] Preferably, the mass ratio of the aluminum hydroxide, ethanol, and expanded graphite is (3-5):(10-15):1.

[0013] Preferably, the preparation method of the additive liquid comprises the following steps: Step one: polyethylene glycol and nano-silicon dioxide are mixed, and then deionized water is added and stirred to obtain a mixed solution, wherein the mass ratio of polyethylene glycol, nano-silicon dioxide and deionized water is 7: (2-3): (14-16); Step two: the mixed solution is added into a spray dryer, the inlet air temperature is set to 110-120 DEG C, the outlet air temperature is set to 60-70 DEG C, and dry powder is collected; Step three: the dry powder and water are mixed according to a mass ratio of 1: (1.5-2), then sodium carboxymethyl cellulose is added, and then the mixture is transferred into a dispersion cylinder and treated at 1000-1200 rpm for 8-10 min to obtain the additive liquid, wherein the mass of sodium carboxymethyl cellulose is 1-2% of the mass of the additive.

[0014] Preferably, a preparation method of a strong sound-absorbing composite wall material comprises the following steps: S1: base material, additive, adhesive, flame retardant and deionized water are added into a mixer, stirring treatment is carried out at 600-700 rpm for 40-50 min, and then a coarse material is obtained; S2: the coarse material, glass wool and rock wool are added into a vibration table, the frequency is set to 50-80 Hz, and then treatment is carried out for 30-40 min to obtain a slurry; S3: the slurry is poured into a mold, and then the mold is placed at a temperature of 38-42 DEG C and a relative humidity of 68-72% for 3-4 h, and then a green body is obtained after demolding; S4: the additive liquid is sprayed on the surface of the green body, and then the green body is transferred into a curing oven, the temperature is set to 50-65 DEG C, and then treatment is carried out for 50-60 min to obtain the strong sound-absorbing composite wall material.

[0015] Compared with the prior art, the present application has the following advantages: 1、In the present application, the illite after calcination treatment forms a porous structure, and the interlayer spacing is expanded, when the sound wave enters the small pores of the porous structure, the air molecules vibrate at high speed in the narrow channel, the speed of the air molecules near the pore wall decreases, the intermolecular friction and the friction between the molecules and the pore wall consume the sound wave kinetic energy, different frequency sound waves are matched, the carbon black particles fill the gap between the rubber molecular chains, avoid the closure of the pores caused by thermal expansion, the molecules absorb energy, block the transmission of sound waves, enhance the interface bonding of illite and carbon black, and the butyl rubber effectively blocks the air sound propagation path, so that the overall sound insulation amount is improved, and the sound absorption performance of the material is significantly improved.

[0016] 2. In this invention, aluminum hydroxide releases water vapor to dilute oxygen and inhibit the combustion chain reaction. The decomposition products of aluminum hydroxide form a protective layer to reduce toxic fumes. Expanded graphite expands in volume at high temperatures to form a carbon layer, which isolates heat and oxygen. The decomposition products of expanded graphite and aluminum hydroxide combine to form a network barrier. Expanded graphite and aluminum hydroxide, as composite flame retardants, significantly improve the fire resistance of materials through multiple mechanisms of chemical synergy, physical barrier, and environmental safety. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. 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 of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0018] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below.

[0019] Example 1: A strong sound-absorbing composite wall material, comprising the following raw materials in parts by weight: 50 parts base material, 20 parts additives, 10 parts adhesive, 8 parts flame retardant, 10 parts deionized water, 10 parts glass wool, 6 parts rock wool, and 6 parts additive liquid; The base material is prepared by using raw materials including lignin sulfonate, cement, sand and gravel, fly ash, silica fume, and diatomaceous earth. Additive preparation, the raw materials for the additives include illite, carbon black, and butyl rubber; The adhesive is prepared from raw materials including glass fiber, ethanol, epoxy resin, and polyetheramine. Flame retardant preparation, the raw materials for flame retardants include aluminum hydroxide, ethanol, and expanded graphite; The additive solution is prepared from raw materials including polyethylene glycol, nano-silica, deionized water, and sodium carboxymethyl cellulose.

[0020] The preparation method of the base material is as follows: lignin sulfonate, cement, sand, fly ash, silica fume, and diatom mud are put into a mixer, the mixer is set to a mixing speed of 200 rpm, and the processing time is 40 min to obtain the base material. The mass ratio of lignin sulfonate, cement, sand, fly ash, silica fume, and diatom mud is 1:50:30:30:20:20.

[0021] The preparation method of the additive includes the following steps: Step 1: put illite into a crusher to break it into particles with a size of 50 μm, then put it into an electric resistance furnace, set the temperature of the electric resistance furnace to 400℃, and process for 10 min, then put the obtained product into an ultrasonic crusher, set the frequency of the ultrasonic crusher to 40 kHz, and process for 60 min to obtain a first powder; Step 2: put carbon black into a drying oven, set the temperature of the drying oven to 70℃, and process for 60 min to obtain a second powder; Step 3: put the first powder, the second powder, and butyl rubber into an open mill, set the temperature of the open mill to 120℃, and process for 20 min, then perform tabletting on the obtained product, set the thickness of the tablet to 5 mm, and perform cold water treatment until the temperature is 30℃ to obtain an additive.

[0022] The mass ratio of the carbon black, the illite, and the butyl rubber is 1:5:10.

[0023] The preparation method of the adhesive is as follows: put glass fibers and ethanol into a stirrer, set the stirring speed of the stirrer to 200 rpm, and process for 40 min, then put the obtained product into a drying oven, set the temperature of the drying oven to 70℃, and process for 60 min, then put epoxy resin, ethanol, polyether amine, and glass fibers into the stirrer, set the stirring speed of the stirrer to 300 rpm, and process for 50 min to obtain the adhesive.

[0024] The mass ratio of the glass fibers, the ethanol, the epoxy resin, and the polyether amine is 1:20:5:1.

[0025] The preparation method of the flame retardant is as follows: put aluminum hydroxide and ethanol into a stirrer, set the stirring speed of the stirrer to 200 rpm, and process for 40 min, then put the obtained product into a drying oven, set the temperature of the drying oven to 70℃, and process for 60 min, then put the obtained product and expanded graphite into a double-screw extruder, set the stirring speed of the double-screw extruder to 200 rpm, and process for 20 min, then put the obtained product into a vulcanizing machine, set the temperature of the vulcanizing machine to 160℃, set the pressure of the vulcanizing machine to 10 MPa, and process for 10 min to obtain the flame retardant.

[0026] The mass ratio of the aluminum hydroxide, the ethanol, and the expanded graphite is 3:10:1.

[0027] The preparation method of the additive liquid includes the following steps: Step 1: mix polyethylene glycol and nano-silicon dioxide, then add deionized water to obtain a mixed solution, wherein the mass ratio of the polyethylene glycol, the nano-silicon dioxide, and the deionized water is 7:2:14; Step 2: put the mixed solution into a spray dryer, set the inlet temperature to 110℃ and the outlet temperature to 60℃, and collect the dried powder. Step three: mix the dry powder and water in a mass ratio of 1:1.5, then add sodium carboxymethyl cellulose, and then transfer into a dispersion cylinder and process at 1000 rpm for 8 min to obtain an additive solution, wherein the mass of sodium carboxymethyl cellulose is 1% of the mass of the additive.

[0028] The preparation method of the strong sound-absorbing composite wall material comprises the following steps: S1: add the base material, additives, adhesives, flame retardants, and deionized water into a mixer, set the stirring speed to 600 rpm, and process for 40 min to obtain a coarse material; S2: add the coarse material, glass wool, and rock wool into a vibration table, set the frequency to 50 Hz, and process for 30 min to obtain a slurry; S3: pour the slurry into a mold, and place it at a temperature of 38°C and a relative humidity of 68% for 3 h, and then demold to obtain a green body; S4: spray the additive solution on the surface of the green body, and then transfer the green body into a curing oven, set the temperature to 50°C, and process for 50 min to obtain the strong sound-absorbing composite wall material.

[0029] Example 2: A strong sound-absorbing composite wall material comprises the following raw materials by weight: 55 parts of base material, 25 parts of additives, 12 parts of adhesives, 9 parts of flame retardants, 12 parts of deionized water, 11 parts of glass wool, 7 parts of rock wool, and 7 parts of additive solution. The base material is prepared from lignosulfonate, cement, sandstone, coal ash, silica fume, and diatom ooze. The additive is prepared from illite, carbon black, and butyl rubber. The adhesive is prepared from glass fiber, ethanol, epoxy resin, and polyether amine. The flame retardant is prepared from aluminum hydroxide, ethanol, and expanded graphite. The additive solution is prepared from polyethylene glycol, nano-silicon dioxide, deionized water, and sodium carboxymethyl cellulose.

[0030] The base material is prepared by placing lignosulfonate, cement, sandstone, coal ash, silica fume, and diatom ooze into a mixer, setting the stirring speed to 250 rpm, and processing for 50 min, wherein the mass ratio of lignosulfonate, cement, sandstone, coal ash, silica fume, and diatom ooze is 1:60:35:35:25:25.

[0031] The preparation method of the additive comprises the following steps: Step 1: put illite into a crusher to break it into particles with a size of 65 μm, then put it into an electric resistance furnace, set the temperature of the electric resistance furnace to 450℃, and process for 15 min, then put the obtained product into an ultrasonic crusher, set the frequency of the ultrasonic crusher to 43 kHz, and process for 70 min to obtain a first powder; Step 2: put carbon black into a drying oven, set the temperature of the drying oven to 80℃, and process for 70 min to obtain a second powder; Step 3: put the first powder, the second powder, and butyl rubber into an open mill, set the temperature of the open mill to 130℃, and process for 30 min, then perform tabletting on the obtained product, set the thickness of the tablet to 6.5 mm, and process in cold water until the temperature is 35℃ to obtain an additive.

[0032] The mass ratio of the carbon black, the illite, and the butyl rubber is 1:8:15.

[0033] The preparation method of the adhesive is as follows: put glass fibers and ethanol into a stirrer, set the stirring speed of the stirrer to 300 rpm, and process for 50 min, then put the obtained product into a drying oven, set the temperature of the drying oven to 80℃, and process for 70 min, then put epoxy resin, ethanol, polyether amine, and glass fibers into the stirrer, set the stirring speed of the stirrer to 400 rpm, and process for 60 min to obtain the adhesive.

[0034] The mass ratio of the glass fibers, the ethanol, the epoxy resin, and the polyether amine is 1:25:6:1.5.

[0035] The preparation method of the flame retardant is as follows: put aluminum hydroxide and ethanol into a stirrer, set the stirring speed of the stirrer to 300 rpm, and process for 50 min, then put the obtained product into a drying oven, set the temperature of the drying oven to 80℃, and process for 70 min, then put the obtained product and expanded graphite into a double-screw extruder, set the stirring speed of the double-screw extruder to 250 rpm, and process for 30 min, then put the obtained product into a vulcanizing machine, set the temperature of the vulcanizing machine to 170℃, set the pressure to 11 MPa, and process for 15 min to obtain the flame retardant.

[0036] The mass ratio of the aluminum hydroxide, the ethanol, and the expanded graphite is 4:12:1.

[0037] The preparation method of the additive liquid comprises the following steps: Step 1: mix polyethylene glycol and nano-silicon dioxide, and then add deionized water to obtain a mixed solution, wherein the mass ratio of the polyethylene glycol, the nano-silicon dioxide, and the deionized water is 7:2.5:15; Step two: the mixed solution is added into a spray dryer, the inlet air temperature is set to 115℃, the outlet air temperature is set to 65℃, and the dry powder is collected; Step three: the dry powder and water are mixed in a mass ratio of 1:1.8, sodium carboxymethyl cellulose is added, and then the mixture is transferred into a dispersion cylinder and treated at 1100rpm for 9min to obtain an additive solution, wherein the mass fraction of sodium carboxymethyl cellulose in the additive is 1.5%.

[0038] The preparation method of the strong sound-absorbing composite wall material comprises the following steps: S1: The base material, additives, adhesives, flame retardants, and deionized water are added into a mixer, which is set to stir at 650rpm for 45min to obtain a coarse material; S2: The coarse material, glass wool, and rock wool are added into a vibration table, which is set to a frequency of 65Hz for 35min to obtain a slurry; S3: The slurry is poured into a mold and left to stand at a temperature of 40℃ and a relative humidity of 70% for 3.5h, and then the green body is obtained after demolding; S4: The additive solution is sprayed on the surface of the green body, and then the green body is transferred into a curing oven, which is set to a temperature of 58℃ for 55min to obtain the strong sound-absorbing composite wall material.

[0039] Example 3: A strong sound-absorbing composite wall material comprises the following raw materials by weight: 60 parts of base material, 30 parts of additives, 15 parts of adhesives, 10 parts of flame retardants, 15 parts of deionized water, 12 parts of glass wool, 8 parts of rock wool, and 8 parts of additive solution. The base material is prepared from lignin sulfonate, cement, sandstone, coal dust ash, silica fume, and diatom ooze. The additive is prepared from illite, carbon black, and butyl rubber. The adhesive is prepared from glass fiber, ethanol, epoxy resin, and polyether amine. The flame retardant is prepared from aluminum hydroxide, ethanol, and expanded graphite. The additive solution is prepared from polyethylene glycol, nano-silicon dioxide, deionized water, and sodium carboxymethyl cellulose.

[0040] The base material is prepared by placing lignin sulfonate, cement, sandstone, coal dust ash, silica fume, and diatom ooze into a mixer, setting the stirring speed to 300rpm, and treating for 60min to obtain the base material, wherein the mass ratio of lignin sulfonate, cement, sandstone, coal dust ash, silica fume, and diatom ooze is 1:70:40:40:30:30.

[0041] The preparation method of the additive comprises the following steps: Step 1: The illite is crushed to a particle size of 80 μm by a crusher, and then placed in a resistance furnace, the temperature of which is set to 500℃, and treated for 20 min. The obtained product is placed in an ultrasonic crusher, which is set to a frequency of 45 kHz, and treated for 80 min to obtain a first powder; Step 2: The carbon black is placed in a drying oven, which is set to a temperature of 90℃, and treated for 80 min to obtain a second powder; Step 3: The first powder, the second powder and the butyl rubber are placed in an open mill, which is set to a temperature of 140℃, and treated for 40 min. The obtained product is subjected to tabletting treatment, and the thickness of the tablet is 8 mm. The tablet is treated with cold water until the temperature is 40℃ to obtain an additive.

[0042] The mass ratio of the carbon black, the illite and the butyl rubber is 1:10:20.

[0043] The preparation method of the adhesive is as follows: the glass fiber and ethanol are placed in a stirrer, which is set to a stirring speed of 400 rpm, and treated for 60 min. The obtained product is placed in a drying oven, which is set to a temperature of 90℃, and treated for 80 min. The epoxy resin, ethanol, polyether amine and glass fiber are placed in a stirrer, which is set to a stirring speed of 500 rpm, and treated for 70 min to obtain the adhesive.

[0044] The mass ratio of the glass fiber, ethanol, epoxy resin and polyether amine is 1:30:7:2.

[0045] The preparation method of the flame retardant is as follows: the aluminum hydroxide and ethanol are placed in a stirrer, which is set to a stirring speed of 400 rpm, and treated for 60 min. The obtained product is placed in a drying oven, which is set to a temperature of 90℃, and treated for 80 min. The obtained product and the expanded graphite are placed in a double screw extruder, which is set to a stirring speed of 300 rpm, and treated for 40 min. The obtained product is placed in a vulcanizing machine, which is set to a temperature of 180℃ and a pressure of 12 MPa, and treated for 20 min to obtain the flame retardant.

[0046] The mass ratio of the aluminum hydroxide, ethanol and expanded graphite is 5:15:1.

[0047] The preparation method of the additive liquid comprises the following steps: Step 1: The polyethylene glycol and nano-silicon dioxide are mixed, and then deionized water is added to obtain a mixed solution, wherein the mass ratio of the polyethylene glycol, nano-silicon dioxide and deionized water is 7:3:16; Step 2: The mixed solution is added to a spray dryer, which is set to an inlet air temperature of 120℃ and an outlet air temperature of 70℃, and the dried powder is collected. Step three: mix the dry powder and water in a mass ratio of 1:2, then add sodium carboxymethyl cellulose, and then transfer into a dispersion cylinder, and process for 10 min at 1200 rpm to obtain an additive solution, wherein the mass of sodium carboxymethyl cellulose is 2% of the mass of the additive.

[0048] The preparation method of the strong sound-absorbing composite wall material comprises the following steps: S1: add the base material, the additive, the adhesive, the flame retardant, and deionized water into a mixer, set the stirring speed to 700 rpm, and process for 50 min to obtain a coarse material; S2: add the coarse material, glass wool, and rock wool into a vibration table, set the frequency to 80 Hz, and process for 40 min to obtain a slurry; S3: pour the slurry into a mold, and place it at a temperature of 42℃ and a relative humidity of 72% for 4 h, and then demold to obtain a green body; S4: spray the additive solution on the surface of the green body, and then transfer the green body into a curing oven, set the temperature to 65℃, and process for 60 min to obtain the strong sound-absorbing composite wall material.

[0049] Comparative Example One, which is different from Example One in that the comparative example does not contain epoxy resin.

[0050] Comparative Example Two, which is different from Example One in that the comparative example does not contain expanded graphite.

[0051] Comparative Example Three, which is different from Example One in that the comparative example does not contain an additive.

[0052] Comparative Example Four, which is different from Example One in that the comparative example does not contain a flame retardant.

[0053] Performance test: the strong sound-absorbing composite wall materials prepared in Experimental Example One, Experimental Example Two, Experimental Example Three, Comparative Example One, Comparative Example Two, Comparative Example Three, and Comparative Example Four are subjected to performance testing, and the test data are recorded in the following table: Table 1: Test item Sound absorption frequency measurement (Hz) Fire resistance time test (min) Example 1 250～4000 210 Example 2 260～4022 220 Example 3 262～4030 230 Comparative Example 1 260～4020 203 Comparative Example 2 390～3900 200 Comparative Example 3 450～3600 205 Comparative Example 4 249～3900 93 In the performance test, the test standards in GB / T 20247-2006 are used to test the sound-absorbing performance of the composite wall materials prepared in Example One, Example Two, Example Three, Comparative Example One, Comparative Example Two, Comparative Example Three, and Comparative Example Four. The test standards in GB / T 9978-2008 are used to test the fire resistance time of the composite wall materials prepared in Example One, Example Two, Example Three, Comparative Example One, Comparative Example Two, Comparative Example Three, and Comparative Example Four.

[0054] It can be seen that the sound absorption frequency and fire resistance time of the composite wall materials prepared in Comparative Examples 1, 2, 3 and 4 are lower than those of Example 1, 2, 3; this shows that the illite after calcination treatment forms a porous structure, and the interlayer spacing is expanded; when the sound wave enters the small pores of the porous structure, the air molecules vibrate at high speed in the narrow channel, the speed of the air molecules close to the pore wall is reduced, the intermolecular friction and the friction between the molecules and the pore wall consume the sound wave kinetic energy, different frequency sound waves are matched, the carbon black particles fill the gap between the rubber molecular chains, avoid the closure of the pores caused by thermal expansion, the molecules absorb energy, block the transmission of sound waves, enhance the interface bonding of illite and carbon black, and the butyl rubber effectively blocks the air sound propagation path, so that the sound absorption performance of the material is significantly improved.

[0055] The aluminum hydroxide releases water vapor to dilute oxygen and inhibit the combustion chain reaction, the decomposition product of the aluminum hydroxide forms a protective layer to reduce toxic smoke, the expanded graphite expands in volume at high temperature to form a carbon layer to isolate heat and oxygen, and the expanded graphite and the decomposition product of the aluminum hydroxide are combined to form a network barrier, so that the expanded graphite and the aluminum hydroxide as a composite flame retardant significantly improve the fireproof performance of the material through chemical synergy, physical barrier and environmentally friendly and safe multiple mechanisms.

[0056] It can be known from the comparison and analysis of the related data in the table that the composite wall material prepared by the application has good sound absorption effect and excellent fireproof performance, so that it is proved that the composite wall material provided by the application has a broader market prospect and is more suitable for promotion.

[0057] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0058] The preferred embodiments of the application disclosed above are only used to help explain the application. The preferred embodiments do not describe all the details and limit the application to the specific embodiments described. Obviously, many modifications and changes can be made according to the content of the present specification. The present specification selects and describes these embodiments in order to better explain the principles and practical applications of the application, so that those skilled in the art can well understand and utilize the application. The application is limited by the claims and their entire scope and equivalents.

Claims

1. A high sound absorbing composite wall material, characterized by: It comprises the following raw materials by weight: 50-60 parts of base material, 20-30 parts of additive, 10-15 parts of adhesive, 8-10 parts of flame retardant, 10-15 parts of deionized water, 10-12 parts of glass wool, 6-8 parts of rock wool, 6-8 parts of additive liquid; The base material is prepared, and the raw materials of the base material include lignin sulfonate, cement, sandstone, coal ash, silica fume, diatom ooze; The additive is prepared, and the raw materials of the additive include illite, carbon black, butyl rubber; The adhesive is prepared, and the raw materials of the adhesive include glass fiber, ethanol, epoxy resin, polyether amine; The flame retardant is prepared, and the raw materials of the flame retardant include aluminum hydroxide, ethanol, expanded graphite; The additive liquid is prepared, and the raw materials of the additive liquid include polyethylene glycol, nano silicon dioxide, deionized water, sodium carboxymethyl cellulose.

2. The high sound absorbing composite wall material according to claim 1, wherein, The preparation method of the base material is as follows: lignin sulfonate, cement, sandstone, coal ash, silica fume, diatom ooze are put into a stirrer, the stirring speed of the stirrer is set to 200-300 rpm, and the treatment time is 40-60 min to obtain the base material, wherein the mass ratio of lignin sulfonate, cement, sandstone, coal ash, silica fume and diatom ooze is 1:(50-70):(30-40):(30-40):(20-30):(20-30).

3. The high sound absorbing composite wall material according to claim 1, wherein, The preparation method of the additive comprises the following steps: Step 1: illite is crushed to a particle size of 50-80 μm by a crusher, then put into an electric resistance furnace, the temperature of the electric resistance furnace is set to 400-500 ℃, and the obtained product is put into an ultrasonic crusher, the frequency of the ultrasonic crusher is set to 40-45 kHz, and the treatment time is 60-80 min to obtain a first powder; Step 2: carbon black is put into a drying oven, the temperature of the drying oven is set to 70-90 ℃, and the treatment time is 60-80 min to obtain a second powder; Step 3: the first powder, the second powder and butyl rubber are put into an open mill, the temperature of the open mill is set to 120-140 ℃, the treatment time is 20-40 min, the obtained product is pressed into a tablet, the thickness of the tablet is 5-8 mm, and the tablet is treated with cold water to 30-40 ℃ to obtain the additive.

4. The high sound absorbing composite wall material according to claim 3, wherein, The mass ratio of the carbon black, illite and butyl rubber is 1:(5-10):(10-20).

5. The high sound absorption composite wall material according to claim 1, wherein, The preparation method of the adhesive is as follows: glass fiber and ethanol are put into a stirrer, the stirring speed of the stirrer is set to 200-400 rpm, and the treatment time is 40-60 min, the obtained product is put into a drying oven, the temperature of the drying oven is set to 70-90 ℃, and the treatment time is 60-80 min, then epoxy resin, ethanol, polyether amine and glass fiber are put into a stirrer, the stirring speed of the stirrer is set to 300-500 rpm, and the treatment time is 50-70 min to obtain the adhesive.

6. The high sound absorption composite wall material according to claim 5, wherein, The mass ratio of the glass fiber, ethanol, epoxy resin and polyether amine is 1:(20-30):(5-7):(1-2).

7. The high sound absorption composite wall material according to claim 1, wherein The preparation method of the flame retardant is as follows: the aluminum hydroxide and ethanol are put into a blender, the blender is set to a stirring speed of 200-400 rpm, and the treatment time is 40-60 min; the obtained product is put into a drying oven, the drying oven is set to a temperature of 70-90 DEG C, and the treatment time is 60-80 min; the obtained product and the expanded graphite are put into a double screw extruder, the double screw extruder is set to a stirring speed of 200-300 rpm, and the treatment time is 20-40 min; the obtained product is put into a vulcanizing machine, the vulcanizing machine is set to a temperature of 160-180 DEG C and a pressure of 10-12 MPa, and the treatment time is 10-20 min, thereby obtaining the flame retardant.

8. The high sound absorbing composite wall material according to claim 7, wherein, The mass ratio of the aluminum hydroxide, the ethanol and the expanded graphite is (3-5):(10-15):

1.

9. The high sound absorption composite wall material of claim 1, wherein, The preparation method of the additive liquid comprises the following steps: Step one: mixing polyethylene glycol and nano-silicon dioxide, and then adding deionized water to obtain a mixed liquid, wherein the mass ratio of the polyethylene glycol, the nano-silicon dioxide and the deionized water is 7:(2-3):(14-16); Step two: adding the mixed liquid into a spray dryer, setting the inlet air temperature to 110-120 DEG C and the outlet air temperature to 60-70 DEG C, and collecting the dried powder; Step three: mixing the dried powder and water at a mass ratio of 1:(1.5-2), adding sodium carboxymethyl cellulose, and then transferring into a dispersion cylinder, treating at 1000-1200 rpm for 8-10 min to obtain the additive liquid, wherein the mass of the sodium carboxymethyl cellulose is 1-2% of the mass of the additive.

10. A method of making a high sound absorbing composite wall material, characterized by, The strong sound-absorbing composite wall material of any one of claims 1-9 is used, comprising the following steps: S1: adding the base material, the additive, the adhesive, the flame retardant and the deionized water into a mixer, setting the stirring speed to 600-700 rpm and treating for 40-50 min to obtain a coarse material; S2: adding the coarse material, the glass wool and the rock wool into a vibration table, setting the frequency to 50-80 Hz and treating for 30-40 min to obtain a slurry; S3: pouring the slurry into a mold, and standing for 3-4 h at a temperature of 38-42 DEG C and a relative humidity of 68-72%, and then demolding to obtain a green body; S4: spraying the additive liquid on the surface of the green body, and then transferring the green body into a curing oven, setting the temperature to 50-65 DEG C and treating for 50-60 min to obtain the strong sound-absorbing composite wall material.