CN115536311A

CN115536311A - Self-cleaning frequency-adaptive sound-absorbing rock and preparation method thereof

Info

Publication number: CN115536311A
Application number: CN202211182283.7A
Authority: CN
Inventors: 陈超雷; 张誉曦
Original assignee: Jiangsu Wanpu Transportation Technology Co ltd
Current assignee: Jiangsu Chuangli Jiaowei Technology Co ltd
Priority date: 2022-09-27
Filing date: 2022-09-27
Publication date: 2022-12-30
Anticipated expiration: 2042-09-27
Also published as: CN115536311B

Abstract

The invention discloses a self-cleaning frequency-adaptive sound-absorbing rock, which comprises a main board-making material and/or fine sand, basalt ribs and a special polymerization agent, wherein the special polymerization agent comprises a polymerization agent A and a polymerization agent B, the polymerization agent A comprises bisphenol A type epoxy resin, a reactive diluent and benzyl alcohol, and further comprises one or a combination of more of talcum powder, phenyl triethoxysilane, a defoaming agent, silicon oil AP100 and silica gel, the novel special polymerization agent is obtained by mixing the polymerization agent A and the polymerization agent B, and then a more comprehensive sound-absorbing rock effect can be realized by a special preparation method, and specific performance parameters are as above.

Description

Self-cleaning frequency-adaptive sound-absorbing rock and preparation method thereof

Technical Field

The invention belongs to the technical field of sound-absorbing rock materials, and particularly relates to a self-cleaning frequency-adaptive sound-absorbing rock and a preparation method thereof.

Background

The sound insulation barrier, also called sound insulation wall, is one of the methods for relieving noise, and is the most effective method for relieving noise of road, railway and industrial noise sources, most of which are used in the road aspect, and the sound insulation barrier is also surrounded outside the ground plate in the building, so as to reduce the disturbance of noise and dust to pedestrians or nearby.

The document with the patent number of CN104986996A discloses a composite fiber polymer reinforced concrete sound barrier and a preparation method thereof. The method utilizes a composite fiber macromolecule reinforced concrete sound barrier, and the concrete raw materials comprise ceramsite, sand, gel materials, reinforced fibers, a water reducing agent, polymer emulsion and water; the gel material comprises cement, fly ash, silica fume and mineral powder; the reinforced fiber is steel fiber and/or polypropylene fiber; the polymer emulsion is acrylate copolymer emulsion or crotonate copolymer emulsion. The ceramsite is characterized by being fine honeycomb closed micropores as light coarse aggregate, has small volume density, is not easy to float upwards during stirring, has certain strength, can reduce the overall mass of concrete, and is wrapped by a cement mortar matrix and isolated from each other in the concrete, so that the internal interface structure of the concrete is improved, and the impermeability of the concrete can be improved. The polymer emulsion is a cement mortar modifier, the acrylic ester copolymer emulsion or the butenoic ester copolymer emulsion selected by the invention can be directly purchased from commercial products, and the polymer emulsion is added in the formula and then matched with other components, so that the ultimate tensile rate, the tensile strength and the crack resistance of the product can be improved, the impermeability is increased, and the old concrete is prevented from being further carbonized. "

However, according to the literature, the concrete sound barrier can only protect a very small part of the concrete sound barrier, but cannot improve the noise reduction, the ultraviolet resistance, the combustion performance, the acid and alkali resistance, the pollution resistance, the noise degree and the insertion loss as a whole, and cannot adapt to a wide sound insulation field, so that various sound insulation materials appear in the market, but the concrete sound barrier cannot realize comprehensive protection, has prominent individual advantages, cannot improve more conventional general protection as a whole, and cannot achieve a better improvement purpose.

Therefore, most of the existing sound barriers achieve a certain effect according to the materials of the existing sound barriers, the functional universality is limited, the application universality is limited, the sound insulation effect is poor, the functional characteristics are not comprehensive, and the performance is unbalanced, so that the problem that specific special sound barriers with comprehensive and better performance in all aspects is needed urgently is solved.

Disclosure of Invention

The invention aims to provide a self-cleaning frequency-adaptive sound-absorbing rock and a preparation method thereof, and aims to solve the problems that in the prior art, most sound barriers achieve a certain effect according to self materials, the effect is poor, the functional characteristics are not comprehensive, and the performance is unbalanced.

In order to achieve the purpose, the invention provides the following technical scheme:

a self-cleaning frequency-adaptive sound-absorbing rock comprises main board-making materials and fine sand, and also comprises basalt ribs and a special polymerizing agent, wherein the special polymerizing agent comprises a polymerizing agent A and a polymerizing agent B;

the polymerization agent A comprises bisphenol A type epoxy resin, a reactive diluent and benzyl alcohol, and also comprises one or a combination of more of talc powder, phenyl triethoxysilane, a defoaming agent, silicone oil AP100 and silica gel;

the polymerization agent B comprises polyether amine resin, and also comprises one or a combination of more of polyamide resin, silane and a dispersing agent.

Preferably, the main material for making the plate comprises rock sand and/or quartz sand.

In any of the above schemes, preferably, the dosage ratio of the special polymerization agent to the main material for making the plate is 1: 8-12.

In any of the above schemes, preferably, the dosage ratio of the special polymerization agent to the main material for making the plate is 1: 8.

In any of the above schemes, preferably, the dosage ratio of the special polymerization agent to the main material for making the plate is 1: 10.

In any of the above schemes, the dosage ratio of the special polymerizing agent to the main material for making the plate is preferably 1: 12.

In any of the above embodiments, it is preferable that the ratio of the amount of the polymerization agent A to the amount of the polymerization agent B is 2-4: 1.

In any of the above embodiments, it is preferable that the ratio of the amount of the polymerization agent A to the amount of the polymerization agent B is 2: 1.

In any of the above embodiments, it is preferable that the ratio of the amount of the polymerization agent A to that of the polymerization agent B is 3: 1.

In any of the above embodiments, it is preferable that the ratio of the polymerization agent A to the polymerization agent B is 4: 1.

The polymerization agent B comprises polyether amine resin, polyamide resin and a dispersing agent.

In any of the above schemes, preferably, the polymerization agent a contains 70% -90% of bisphenol a epoxy resin, 1% -3% of reactive diluent, 1% -5% of benzyl alcohol, and 2% -28% of one or more of talc powder, phenyltriethoxysilane, defoamer, silicone oil AP100 and silica gel.

In any of the above schemes, preferably, the polymerization agent a comprises 70% to 90% of bisphenol a epoxy resin, 1% to 3% of reactive diluent, 1% to 5% of benzyl alcohol, and 2% to 28% of talc powder.

In any of the above schemes, preferably, the polymerization agent a contains 70% of bisphenol a epoxy resin, 1% of reactive diluent, 1% of benzyl alcohol, and 28% of one or a combination of talc powder, phenyltriethoxysilane, defoamer, silicone oil AP100 and silica gel.

In any of the above embodiments, it is preferable that the polymerization agent a contains 70% of bisphenol a epoxy resin, 2% of reactive diluent, 3% of benzyl alcohol, and 25% of talc powder.

In any of the above embodiments, it is preferable that the polymerization agent a contains 75% of bisphenol a epoxy resin, 2% of reactive diluent, 3% of benzyl alcohol, and 20% of phenyltriethoxysilane.

In any of the above schemes, preferably, the polymerization agent a contains 80% of bisphenol a epoxy resin, 1% of reactive diluent, 4% of benzyl alcohol, and 15% of one or more of talc powder, phenyltriethoxysilane, defoamer, silicone oil AP100 and silica gel.

In any of the above embodiments, it is preferable that the polymerization agent a contains 80% of bisphenol a epoxy resin, 1% of reactive diluent, 4% of benzyl alcohol, and 15% of defoaming agent.

In any of the above embodiments, it is preferable that the polymerization agent a contains 80% of bisphenol a epoxy resin, 1% of reactive diluent, 4% of benzyl alcohol, and 15% of defoaming agent. .

In any of the above embodiments, preferably, the defoaming agent may be any one of salicylic acid, adipic acid, and phthalic acid.

In any of the above embodiments, it is preferable that the polymerization agent a contains 80% of bisphenol a epoxy resin, 1% of reactive diluent, 4% of benzyl alcohol, and 15% of talc powder.

In any of the above schemes, preferably, the polymerization agent a contains 90% of bisphenol a type epoxy resin, 2% of reactive diluent, 2% of benzyl alcohol, and 6% of one or a combination of talc powder, phenyltriethoxysilane, defoamer, silicone oil AP100 and silica gel.

In any of the above schemes, preferably, the polymerization agent B contains 35% to 70% of polyetheramine resin, and 30% to 65% of one or more of polyamide resin, silane and dispersant.

In any of the above embodiments, it is preferable that the polymerization agent B includes a polyetheramine resin and further includes a polyamide resin.

In any of the above embodiments, it is preferable that the polymerization agent B contains 35% to 70% of polyetheramine resin and 30% to 65% of polyamide resin. In any of the above embodiments, the polymerization agent B preferably contains 35% of polyetheramine resin, 63% of polyamide resin, and 2% of dispersant.

In any of the above embodiments, the polymerization agent B preferably contains 45% of polyetheramine resin, 53% of polyamide resin, and 2% of dispersant.

In any of the above embodiments, it is preferable that the polymerization agent B contains 63% of polyetheramine resin, 36% of polyamide resin, and 1% of dispersant.

In any of the above embodiments, the polymerization agent B preferably contains 65% of polyetheramine resin, 32% of polyamide resin, 2.5% of silane, and 0.5% of dispersant.

In any of the above embodiments, preferably, the dispersant may be any one of sodium methylene bis naphthalene sulfonate and sodium dinaphthylmethane disulfonate.

In any of the above embodiments, it is preferable that the polymerization agent B contains 70% of polyetheramine resin and 30% of one or more of polyamide resin, silane and dispersant.

In any of the above embodiments, preferably, the polymerization agent B contains 70% of polyetheramine resin and 30% of polyamide resin.

The invention also discloses a preparation method of the self-cleaning frequency-adaptive sound-absorbing rock, which comprises the following steps:

the method comprises the following steps: selecting and detecting main materials: selecting rock sand and/or finished quartz sand as a main material for plate making, detecting the prepared rock sand and/or quartz sand by using a soil moisture content detector, and putting the rock sand and/or quartz sand into stirring equipment after the detection reaches the standard;

step two: preparation and mixing of the special polymerizer: fully mixing the polymerization agent A and the polymerization agent B to form a special polymerization agent, and then mixing and stirring the special polymerization agent and quartz sand and/or rock sand according to the ratio of 1: 8-12;

step three: molding: pouring the mixture obtained in the step two into a mold until the mixture is poured to half the depth of the mold, strickling and applying an exciting force to form a through hole, wherein the porosity is 35-60%, and the thickness is 8-12mm;

step four: implanting a reinforced net and basalt ribs: after the thickness and the flatness in the third step reach the standard, implanting a reinforcement mesh and basalt ribs;

step five: formation of the inner embryo: after the reinforcement mesh and the basalt ribs are implanted in the fourth step, pouring the rest mixture, leveling the mixture at the thickness of 16-20mm, applying the same excitation force as that in the third step by matching with vibration to form through holes, so as to achieve uniform porosity and form an inner blank;

step six: wrapping with fine sand: after the inspection is qualified, removing the baffle plates on the periphery of the mold, and spraying 60-80 meshes of fine sand for wrapping, wherein the fine sand is prepared according to the proportion of a special polymerizing agent to the fine sand =1:8-12, the thickness of the fine sand is 2-5mm, and the fine sand or quartz sand is embedded into the inner blank prepared before by applying vibration force, so that the surface becomes fine, smooth and attractive and has air permeability, and the original pores and through holes are reserved; if the relief pattern plate is manufactured, pattern pressing is carried out at the same time of the step;

step seven: drying and demolding: when the flatness and the appearance reach the standard, the upper pressing plate of the mold is horizontally arranged, naturally dried and demolded;

step eight: and (3) spraying treatment: detecting the product demoulded in the step seven, spraying one or more of fluorocarbon, polyurethane, acrylic acid and polysiloxane finish paint according to the requirement after the detection meets the requirement, and performing closed stain-resistant treatment after the finish paint is dried;

step nine: formation of mastoid structure: and (5) after the spraying in the step eight, forming a mastoid structure on the surface of the plate, and achieving the actual drying requirement after 8-10 hours.

Preferably, in the second step, the special polymerizer and the quartz sand and/or rock sand are mixed and stirred according to the ratio of 1:8, and are fully stirred for 10 minutes in the stirring cylinder, and then are subpackaged by the material distributing cylinder for finished product production.

Preferably, in the second step, the special polymerizer and the quartz sand and/or rock sand are mixed and stirred according to a ratio of 1: 10, and are fully stirred for 10 minutes in the stirring cylinder, and then are subpackaged by the material distributing cylinder for finished product production.

Preferably, in the second step, the special polymerizer and the quartz sand and/or rock sand are mixed and stirred according to a ratio of 1: 12, and are fully stirred for 10 minutes in a stirring cylinder, and then are subpackaged by a material distributing cylinder for finished product production. Preferably, in the fourth step, the basalt ribs and the reinforced mesh are all finished products in the prior art, the number of the basalt ribs is two, and the diameter of each basalt rib is about 0.5 cm.

Preferably, in the ninth step, the diameter of the mastoid structure formed on the surface of the plate is 6-8 microns, so that the plate has a self-cleaning function, and the requirement of actual drying can be met after 8-10 hours.

Has the advantages that:

1. the novel special polymerization agent is obtained by mixing the polymerization agent A and the polymerization agent B, then a relatively comprehensive sound-absorbing rock effect can be realized by a special preparation method, compared with the existing sound-absorbing rock or sound barrier, the novel special polymerization agent can not comprehensively achieve various performances of the invention, the sound-absorbing rock prepared by the invention has a relatively comprehensive functional structure and relatively balanced performances, and can realize the improvement of the performances on multiple parameters, such as noise reduction coefficient NRC of more than or equal to 0.7-0.9, ultraviolet resistance of more than or equal to 99%, combustion performance of A grade, acid and alkali resistance of not foaming, not losing light, not changing color, and insertion loss of more than or equal to 10-20dB (A);

2. after the weather resistance is detected, the surface of a test piece has no cracks, pulverization and peeling phenomena, the stain resistance is less than or equal to 15I, the deflection can be the maximum elastic deflection under the action of standard load, and the like, so that the test piece is more suitable for implementation in the field of sound insulation, can be suitable for various sound insulation occasions, and has wider application.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

The invention provides a self-cleaning frequency-adaptive sound-absorbing rock, which comprises a main board-making material and fine sand, and also comprises basalt ribs and a special polymerizing agent, wherein the special polymerizing agent comprises a polymerizing agent A and a polymerizing agent B, the mixing ratio of the polymerizing agent A to the polymerizing agent B is 3:1, and the dosage ratio in the self-cleaning frequency-adaptive sound-absorbing rock is that the main material is 36: the fine sand is 10: the special polymerizing agent is 3.6;

the polymerization agent A is bisphenol A type epoxy resin, an active diluent, benzyl alcohol and talc powder;

and the polymerization agent B is selected from polyether amine resin and polyamide resin.

The main material for making the plate is rock sand, and the mesh number of rock sand particles is 40.

The polymerization agent A comprises 80% of bisphenol A epoxy resin, 1% of reactive diluent, 4% of benzyl alcohol and 15% of talc powder.

The polymerization agent B contains 70% of polyether amine resin and 30% of polyamide resin.

A preparation method of a self-cleaning frequency-adaptive sound-absorbing rock comprises the following specific steps:

the method comprises the following steps: selecting and detecting main materials, namely selecting rock sand as a main material for plate making, detecting the prepared rock sand by using a sandstone soil water content detector, and when the detection result of the water content is up to the standard, putting the rock sand into stirring equipment;

step two: prefabricating and mixing a special polymerizer, fully mixing a polymerizer A and a polymerizer B to form the special polymerizer, wherein the mixing ratio of the polymerizer A to the polymerizer B is 3:1, then mixing and stirring the special polymerizer and quartz sand or rock sand at the stirring speed of 700 revolutions per minute according to the ratio of 1: 10, fully stirring in a stirring cylinder for 10 minutes, and subpackaging by using a material distributing cylinder for finished product production;

step three: molding, pouring and strickling, pouring the mixture in the material dividing cylinder in the step two into a mold, wherein the size of the mold is the length-width ratio of 4: 1, striking off the mixture after pouring the mixture into the mold and applying an excitation force to form a through hole with a certain porosity, wherein the frequency of the excitation force is 120hz, the porosity is 35%, if the mixture is closed, the mixture is regarded as unqualified, and the thickness is 10mm;

step four: the ribbed net and the basalt ribs are implanted, when the thickness and the flatness in the step three reach standards, the ribbed net and the basalt ribs can be implanted, and the basalt ribs are made of polymer composite basalt;

step five: forming an inner blank, namely pouring the residual mixture after the reinforcement mesh and the basalt ribs are implanted in the step four, strickling off the mixture, and applying the same excitation force with the thickness of 18mm to achieve uniform porosity and through holes by matching vibration and applying the same excitation force as before to form the inner blank;

step six: fine sand wrapping, namely removing baffles on the periphery of the mold after the fine sand is qualified, and spraying 70-mesh fine sand for wrapping, wherein the fine sand is prepared according to the proportion of a special polymerizing agent to the fine sand of 1: 8.5, the thickness of the fine sand is 4mm, and vibration force is applied to embed rock sand with finer meshes into the inner blank prepared before, so that the surface of the fine sand becomes fine, smooth and attractive and has air permeability, the original holes and through holes are reserved, and pattern pressing is carried out while the relief pattern plate is prepared;

step seven: drying and demoulding, wherein after the flatness and the appearance reach the standard, the mould is provided with an upper pressing plate and is horizontally arranged in a ventilation factory to be naturally dried for 3 hours to reach the strength of 75 percent, and demoulding can be carried out;

step eight: spraying treatment, namely detecting the product subjected to demolding in the step seven, spraying fluorocarbon according to the requirement after the detection meets the requirement, wherein the thickness of the sprayed paint surface is 50 microns, and performing closed stain-resistant treatment after the surface of the surface paint is dried;

step nine: and (4) performing stain resistance treatment, namely forming a mastoid structure, wherein after the spraying in the step eight, a mastoid structure with the diameter of 7 micrometers is formed on the surface of the plate, so that the plate has a self-cleaning function, a stain resistance effect is achieved, and the requirement of full drying can be met after 8 hours.

The self-cleaning frequency-adaptive sound-absorbing rock plate prepared by the preparation method is detected, and the detection result is as follows:

the thickness of the product is 20-80mm; the noise reduction coefficient NRC is more than or equal to 0.7-0.9; weighting sound insulation Rw + Ctr is more than or equal to 28dB-40dB; the insertion loss is more than or equal to 10-20dB (A), and the combustion performance reaches the A-level requirement; deflection: the maximum elastic deflection weather resistance under the action of standard load: referring to JG149-2003, after 30 times of heating (50 ℃) and freezing (-20 ℃) circulation, the surface of a test piece has no phenomena of crack, pulverization and peeling; and (3) impact resistance: meets the requirement that the member bears the impact of 30J +/-1J energy, namely TB/T14153-1993 (TVOC), mg/m ² H is less than or equal to 0.15, HJ571, stain resistance is less than or equal to 15I grade GB/T9780-2013, ultraviolet resistance is more than or equal to 99%, and alkali resistance: i.e. no foaming, no light loss and no color change after being immersed in saturated calcium hydroxide solution for 240 hours. Acid resistance: namely, the paint does not foam, lose light and change color after being immersed in 5 percent sulfuric acid solution for 168 hours. An artificial aging resistance experiment: the aging test result of an ultraviolet lamp (UVA-340) for 3000 hours shows that the surface of a test piece has no cracks, pulverization and peeling phenomena, and the internal pores of the plate are through holes GB/T10799-2008.

The comparison of the performance of the self-cleaning frequency-adaptive acoustic rock board prepared according to the above example 1 with the existing acoustic board on the market is shown in table 1:

TABLE 1

Example 2:

a self-cleaning, frequency-adaptive acoustical rock, similar to example 1, except that the composition of polymerization agent A in this example is shown in Table 2:

TABLE 2

The composition of polymerizer B is shown in Table 3:

TABLE 3

The data obtained by detecting the special polymerization agent formed by mixing the polymerization agent a and the polymerization agent B in this example are shown in table 4:

TABLE 4

Example 3: a self-cleaning, frequency-adaptive acoustical absorbent rock, similar to example 1, except that the ingredients of polymerizers A and B in the special polymerizers in this example are as follows:

the composition of polymerization agent A is shown in Table 5:

TABLE 5

The composition of polymerizer B is shown in Table 6:

TABLE 6

Polyether amine resin 63%

36 percent of polyamide resin

1 percent of dispersant

In this embodiment, the data obtained by detecting the special polymerization agent formed by mixing the polymerization agent a and the polymerization agent B is as follows:

TABLE 7

Example three: the difference from examples 1 and 2 is that the ingredients of the polymerization agent A and the polymerization agent B in the special polymerization agent in this example are as follows:

the composition of polymerization agent A is shown in Table 8:

TABLE 8

The composition of polymerizer B is shown in Table 9:

TABLE 9

70 percent of polyether amine resin

30 percent of polyamide resin

watch 10

Example four: a self-cleaning frequency-adaptive sound absorbing rock is different from the examples 1, 2 and 3 in that the components of a polymerization agent A and a polymerization agent B in a special polymerization agent in the example are as follows:

the composition of polymerization agent A is shown in Table 11:

TABLE 11

The composition of polymerization agent B is shown in Table 12:

TABLE 12

70 percent of polyether amine resin

30 percent of polyamide resin

watch 13

Example five: a self-cleaning frequency-adaptive sound-absorbing rock is different from examples 1, 2, 3 and 4 in that the components of a polymerization agent A and a polymerization agent B in a special polymerization agent in the embodiment are as follows:

the composition of polymerization agent A is shown in Table 14:

TABLE 14

The composition of polymerization agent B is shown in Table 15:

watch 15

70 percent of polyether amine resin

30 percent of polyamide resin

TABLE 16

EXAMPLE six

A self-cleaning, frequency-adaptive acoustical rock similar to example 1 except that the polymerization agent A comprises 70% of bisphenol A type epoxy resin, 1% of reactive diluent, 4% of benzyl alcohol and 25% of talc powder.

The polymerization agent B contains 35% of polyetheramine resin and 65% of polyamide resin.

EXAMPLE seven

A self-cleaning, frequency-adaptive acoustical rock similar to example 1 except that the polymerization agent A comprises 90% of bisphenol A type epoxy resin, 3% of reactive diluent, 1% of benzyl alcohol and 6% of talc powder.

The polymerization agent B comprises 50% of polyether amine resin and 50% of polyamide resin.

The above embodiments can also achieve better weighting sound insulation Rw + Ctr more than or equal to 28dB-40dB; the insertion loss is more than or equal to 10-20dB (A); deflection: the weather resistance of the maximum elastic deflection under the action of standard load;

in the above embodiments, the polymerization agent a and the polymerization agent B are mixed to obtain a new special polymerization agent, and then a relatively comprehensive sound-absorbing rock effect can be realized by a special preparation method, in the second embodiment, the third embodiment, the fourth embodiment and the fifth embodiment, compared with the embodiment 1, the embodiment 1 has relatively balanced parameters and relatively good effect, and the specific performance parameters are as above, compared with the existing sound-absorbing rock or sound barrier, the embodiment 1 can not comprehensively achieve various performances of the invention, and has relatively comprehensive functional structure and relatively balanced performance, thereby being more suitable for implementation in the field of sound insulation.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments, or make equivalent substitutions and improvements to part of the technical features of the foregoing embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The self-cleaning frequency-adaptive sound-absorbing rock comprises main board-making materials and/or fine sand, and is characterized in that: the basalt fiber reinforced plastic composite material also comprises basalt fibers and a special polymerizing agent, wherein the special polymerizing agent comprises a polymerizing agent A and a polymerizing agent B;

2. A self-cleaning, frequency-adaptive, acoustical rock according to claim 1, wherein: the main material for manufacturing the plate comprises rock sand and/or quartz sand, the mesh number of the rock sand and/or quartz sand is 30-50, and the polymerization agent A and the polymerization agent B are mixed by 3:1-2 to prepare the special polymerization agent.

3. A self-cleaning, frequency-adaptive, acoustical rock according to claim 1, wherein: in the polymerization agent A, 70-90% of bisphenol A type epoxy resin, 1-3% of reactive diluent, 1-5% of benzyl alcohol and 2-28% of one or more of talc powder, phenyltriethoxysilane, defoaming agent, silicone oil AP100 and silica gel are combined.

4. A self-cleaning, frequency-adaptive, acoustical rock according to claim 3, wherein: the polymerization agent A comprises 80% of bisphenol A epoxy resin, 1% of reactive diluent and 4% of benzyl alcohol, and one or more of talc powder, phenyltriethoxysilane, a defoaming agent, silicone oil AP100 and silica gel accounts for 15%.

5. A self-cleaning, frequency-adaptive, acoustical rock according to claim 1, wherein: in the polymerization agent B, the polyether amine resin accounts for 35-70%, and one or more of polyamide resin, silane and a dispersing agent accounts for 30-65%.

6. A self-cleaning, frequency-adaptive, acoustical rock according to claim 5, wherein: the polymerization agent B comprises 70% of polyether amine resin and 30% of one or a combination of polyamide resin, silane and a dispersing agent.

7. The method for preparing a self-cleaning frequency-adaptive sound-absorbing rock as claimed in any one of claims 1 to 6, comprising the steps of:

step two: preparation and mixing of the special polymerizer: fully mixing the polymerization agent A and the polymerization agent B to form a special polymerization agent, and then mixing and stirring the special polymerization agent and quartz sand and/or rock sand according to 1:8-12;

step three: molding: pouring the mixture obtained in the step two into a mold until the mixture is poured to the half depth of the mold, and then strickling and applying an excitation force to form a through hole, wherein the porosity is 35-60%, and the thickness is 8-12mm;

step five: formation of the inner embryo: after the reinforcement mesh and the basalt ribs are implanted in the fourth step, pouring the rest mixture, leveling to a thickness of 16-20mm, applying the same excitation force as that in the third step in a vibration manner to form through holes, achieving uniform porosity, and forming an inner blank;

step six: wrapping with fine sand: after the inspection is qualified, removing the baffle plates around the die, and spraying fine sand of 60-80 meshes for wrapping, wherein the fine sand is prepared by the following steps: fine sand =1:8-12, the thickness is 2-5mm, and vibration force is applied to embed rock sand or quartz sand with finer meshes into the inner blank prepared before;