KR102493793B1 - Ecofriendly sound-absorbing board and method for manufacturing the same - Google Patents

Abstract

The present invention relates to an eco-friendly sound-absorbing board and a method for manufacturing the same, and more particularly, to an eco-friendly sound-absorbing board which is obtained by using compressed reinforced glass wool and an inorganic lightweight sound-absorbing material, to be eco-friendly and have excellent sound-absorbing properties and flame retardancy, and is attached to the inner wall of a building, to absorb sound in various ranges, and a method for manufacturing the same.

Description

Eco-friendly sound-absorbing board and method for manufacturing the same {Ecofriendly sound-absorbing board and method for manufacturing the same}

The present invention relates to an eco-friendly sound-absorbing board and a method for manufacturing the same, and more particularly, by using compressed reinforced glass wool and an inorganic lightweight sound-absorbing material, which is environmentally friendly and has excellent sound-absorbing properties and flame retardancy, and is attached to the inner wall of a building to achieve various sound ranges. It relates to an eco-friendly sound absorbing board capable of absorbing sound and a manufacturing method thereof.

The modern noise problem tends to get worse with industrialization and urbanization. Accordingly, sound absorbing materials, which are used as interior and exterior materials of buildings for the purpose of reducing noise of buildings, are widely used in apartments, railways, stages, and large buildings, and perform a function of blocking various noises generated from the outside or inside of buildings.

In particular, sound absorbing materials, which are widely used in areas where traffic or people are concentrated, absorb and reduce sound waves by themselves by the internal sound absorbing materials, so the noise loses energy after it hits the sound barrier and the reflected noise level itself is reduced.

On the other hand, there are foamed glass, foamed ceramics, glass wool and mineral wool, etc., which are often used as sound absorbing materials, which are incombustible and excellent in sound absorption, but fillers made of glass wool or mineral wool generate a lot of dust and penetrate the user's skin. The downside is that it can harm your health.

In addition, since foam glass and foam ceramic are manufactured using a firing method, there is a problem of poor simplicity.

In this regard, Korean Patent Registration No. 10-0785652 discloses a method of preparing a foamed ceramic by mixing an appropriate amount of ceramic powder, a silicate foaming agent, and an additive to form a slurry, foaming the slurry, and then heating it at 80 to 250° C. for about 2 hours. However, this method has the disadvantage of adding fibers and resins as additives to reinforce the strength of the molded body, and it is difficult to decompose naturally due to the addition of organic matter when discarded after use, so the development of excellent sound absorption materials is further needed am.

Republic of Korea Patent Registration No. 10-0785652

In order to solve the above problems, the present invention uses compression-reinforced glass wool and inorganic lightweight sound-absorbing material, which is environmentally friendly and has excellent sound-absorbing characteristics, so that it is installed adjacent to the inner wall of theaters, music rooms, auditoriums, etc. as well as general offices. Provided is an eco-friendly sound absorbing board that prevents sound from being transmitted to the outside and allows sound to be transmitted evenly throughout the room.

The above purpose is to finely spray a liquid binder on mixed glass fibers composed of 60 to 80% by weight of inorganic glass fibers, 10 to 20% by weight of basalt fibers and 10 to 20% by weight of ceramic fibers, and then powdered shells with a particle size of 10 to 50㎛. preparing a reinforcing mixed glass fiber by applying to the mixed glass fiber; Preparing compressed reinforced glass wool 200 by compressing the reinforced mixed glass fibers with a press; attaching a nonwoven fabric 220 to a lower portion of the compression-reinforced glass wool 200; Preparing a cylindrical CFRP rod 110 by manufacturing a net structure CFRP film using carbon fiber reinforced plastics (CFRP) and then transforming it into a cylindrical structure having a diameter of 1 to 3 mm; preparing foamed glass by mixing fly ash, waste glass powder, vermiculite powder, and a foaming agent in a ratio of 10: 75: 10: 5 to 5: 88: 5: 2 weight% and then firing them; preparing a base coat 100 by pulverizing the foamed glass to prepare foamed glass particles and then mixing them with cement, basalt particles, and an adhesion enhancer; Applying the base coat 100 on top of the compressed glass wool 200 so that the cylindrical CFRP rods 110 are disposed at intervals of 5 mm inside the base coat 100 layer, and then drying; and applying a finish coating 25 made of a denatured acrylic emulsion on top of the dried base coat 100 and drying it; It can be achieved by a method of manufacturing an eco-friendly sound absorbing board comprising a.

Specifically, before applying the base coat 100 on the top of the compression-reinforced glass wool 200, the step of inserting a perforated metal thin film 120 at 5 mm intervals between the compression-reinforced glass wool and the base coat is added. may include

Specifically, before attaching the non-woven fabric 220 to the lower portion of the compression-reinforced glass wool 200, inserting the flame-retardant cork board 210 between the compression-reinforced glass wool 200 and the non-woven fabric 220 may be additionally included.

Specifically, the compression-reinforced glass wool 200 has a thickness of 10 to 50 mm, a density of 50 to 150 kg/m ³ , and the CFRP film has a net structure having holes with a diameter of 0.5 mm at intervals of 1 to 2 mm, The size of the foamed glass particles is 0.5 to 2mm, and the step of preparing the base coat 100 may be to mix foamed glass particles, cement, basalt particles, and an adhesion enhancer in a weight ratio of 5 to 8: 2: 1: 1, respectively. there is.

In addition, the above object can be achieved by the eco-friendly sound absorbing board 350 manufactured by the above manufacturing method.

The eco-friendly sound-absorbing board according to the present invention uses compression-reinforced glass wool and inorganic light-weight sound-absorbing material to be eco-friendly, has excellent sound-absorbing properties and flame resistance, is composed of a board form, can be easily installed on the interior and exterior walls of a building, and is resistant to contamination and fire. It has a characteristic.

1 is a flow chart illustrating a method of manufacturing an eco-friendly sound absorbing board according to an embodiment.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. However, since various changes can be made to the embodiments, the scope of the patent application is not limited or limited by these embodiments. It should be understood that all changes, equivalents or substitutes to the embodiments are included within the scope of rights.

Specific structural or functional descriptions of the embodiments are disclosed for illustrative purposes only, and may be modified and implemented in various forms. Therefore, the embodiments are not limited to the specific disclosed form, and the scope of the present specification includes changes, equivalents, or substitutes included in the technical spirit.

Although terms such as first or second may be used to describe various components, such terms should only be construed for the purpose of distinguishing one component from another. For example, a first element may be termed a second element, and similarly, a second element may be termed a first element.

It should be understood that when an element is referred to as being “connected” to another element, it may be directly connected or connected to the other element, but other elements may exist in the middle.

Terms used in the examples are used only for descriptive purposes and should not be construed as limiting. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as "include" or "have" are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that the presence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which the embodiment belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in the present application, they should not be interpreted in an ideal or excessively formal meaning. don't

In addition, in the description with reference to the accompanying drawings, the same reference numerals are given to the same components regardless of reference numerals, and overlapping descriptions thereof will be omitted. In describing the embodiment, if it is determined that a detailed description of a related known technology may unnecessarily obscure the gist of the embodiment, the detailed description will be omitted.

Advantages and features of the present invention, and methods of achieving them, will become clear with reference to the detailed description of the following embodiments taken in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various different forms, only these embodiments make the disclosure of the present invention complete, and common knowledge in the art to which the present invention belongs. It is provided to fully inform the holder of the scope of the invention, and the present invention is only defined by the scope of the claims.

In the embodiments of the present invention, unless otherwise defined, all terms used herein, including technical or scientific terms, are the same as those commonly understood by one of ordinary skill in the art to which the present invention belongs. It has meaning. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in the embodiments of the present invention, an ideal or excessively formal meaning not be interpreted as

The shapes, sizes, ratios, angles, numbers, etc. disclosed in the drawings for explaining the embodiments of the present invention are illustrative, so the present invention is not limited to the details shown. In addition, in describing the present invention, if it is determined that a detailed description of related known technologies may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted. When 'includes', 'has', 'consists of', etc. mentioned in this specification is used, other parts may be added unless 'only' is used. In the case where a component is expressed in the singular, the case including the plural is included unless otherwise explicitly stated.

In interpreting the components, even if there is no separate explicit description, it is interpreted as including the error range.

In the case of a description of a positional relationship, for example, 'on top of', 'on top of', 'at the bottom of', 'next to', etc. Or, unless 'directly' is used, one or more other parts may be located between the two parts.

When an element or layer is referred to as “on” another element or layer, it includes all cases where another element or layer is directly on top of another element or another layer or other element intervenes therebetween. Like reference numbers designate like elements throughout the specification.

The size and thickness of each component shown in the drawings are shown for convenience of description, and the present invention is not necessarily limited to the size and thickness of the illustrated components.

Each feature of the various embodiments of the present invention can be partially or entirely combined or combined with each other, and as those skilled in the art can fully understand, various interlocking and driving operations are possible, and each embodiment can be implemented independently of each other. It may be possible to implement together in an association relationship.

In one aspect of the present application, a liquid binder is finely sprayed on mixed glass fibers composed of 60 to 80% by weight of inorganic glass fibers, 10 to 20% by weight of basalt fibers, and 10 to 20% by weight of ceramic fibers, followed by particle size of 10 to 50 μm. Preparing reinforced mixed glass fibers by applying shell powder to the mixed glass fibers; Preparing compressed reinforced glass wool 200 by compressing the reinforced mixed glass fibers with a press; attaching a nonwoven fabric 220 to a lower portion of the compression-reinforced glass wool 200; Preparing a cylindrical CFRP rod 110 by manufacturing a net structure CFRP film using carbon fiber reinforced plastics (CFRP) and then transforming it into a cylindrical structure having a diameter of 1 to 2 mm; preparing foamed glass by mixing fly ash, waste glass powder, vermiculite powder, and a foaming agent in a ratio of 10: 75: 10: 5 to 5: 88: 5: 2 weight% and then firing them; preparing a base coat 100 by pulverizing the foamed glass to prepare foamed glass particles and then mixing them with cement, basalt particles, and an adhesion enhancer; Applying the base coat 100 on top of the compressed glass wool 200 so that the cylindrical CFRP rods 110 are disposed at intervals of 5 mm inside the base coat 100 layer, and then drying; and applying a finish coating 25 made of a denatured acrylic emulsion on top of the dried base coat 100 and drying it; Including, it provides a method for manufacturing an environmentally friendly sound-absorbing board.

Hereinafter, a method of manufacturing an eco-friendly sound absorbing board according to an embodiment of the present invention can be described with reference to FIG. 1 .

First, a liquid binder is finely sprayed on mixed glass fibers composed of 60 to 80% by weight of inorganic glass fibers, 10 to 20% by weight of basalt fibers, and 10 to 20% by weight of ceramic fibers, and then shell powder with a particle size of 10 to 50㎛ is added. It is applied to the mixed glass fibers to prepare reinforced mixed glass fibers.

The glass fiber means that glass is melted into a thin and long fiber shape, and it is resistant to high temperatures and does not burn. In addition, there is no water absorption, low hygroscopicity, and chemical durability, so it does not corrode. In particular, it has high tensile strength, low elongation, and high electrical insulation. It has low abrasion resistance, is easily broken, and has the property of breaking. When configured in the form of a mat, it has characteristics of heat insulation and sound absorption.

The basalt fibers refer to gray-brown fibers made of basalt, 50% silicon dioxide, 12% aluminum oxide, 11% calcium oxide, 10% magnesium oxide, 7% iron (II) oxide, 5% alkali metal oxides Na2O and K2O, 3 It has an average chemical composition of 2% different oxides from % titanium(IV) oxide, and when configured in the form of a mat, it has heat insulating and sound absorbing properties.

The ceramic fiber means that an inorganic material having a crystal quality such as carbon, silicon or zirconium is made into a fiberized three-dimensional structured ceramic, and has low thermal conductivity and heat storage, no thermal expansion, and is used as an insulator due to its strong resistance to thermal shock. do. In addition, it is excellent in sound absorption and is used as a component of sound absorption materials.

The clam shell powder generally means a powdered shell of a clam, an animal of the mollusk phylum Bivalvia.

The shell powder in the present invention may be attached to the surface of the mixed glass fibers to increase the surface area of the glass fibers and to enhance the sound absorption of the compressed reinforced glass wool 200 manufactured through this.

Next, the compressed reinforced glass wool 200 is manufactured by compressing the reinforced mixed glass fibers with a press.

Unlike ordinary glass fibers, the compressed reinforced glass wool 200 is compressed under high pressure, so that no scattering dust is generated.

In manufacturing the compressed-reinforced glass wool 200, a press method commonly used in the construction field may be used as a press method.

In one embodiment, the compression-reinforced glass wool 200 may have a thickness of 10 to 50 mm, and a density of 50 to 150 kg/m ³ .

Next, the nonwoven fabric 220 is attached to the lower portion of the compression-reinforced glass wool 200. The non-woven fabric 220 may be attached to the lower portion of the compression-reinforced glass wool 200 to provide a space between the attachment surface and the compression-reinforced glass wool 200 during construction to further enhance the sound absorption effect.

In one embodiment, the step is before attaching the nonwoven fabric 220 to the lower portion of the compression reinforced glass wool 200, the flame retardant treated cork board 210 between the compression reinforced glass wool 200 and the nonwoven fabric 220 ) may be further included.

The cork board 210 refers to a panel-type structure made of cork, which means a thick bark layer between the outer bark and inner bark of a tree. The cork board 210 made of cork has properties such as heat insulation, sound insulation, and elasticity, and is often used as a building material.

The cork board 210 in the present invention may be positioned between the compression-reinforced glass wool and the nonwoven fabric to provide an additional sound insulation effect for some of the noise passing through the glass wool.

Next, a net structure CFRP film is manufactured using carbon fiber reinforced plastics (CFRP), and then transformed into a cylindrical structure having a diameter of 1 to 3 mm to manufacture a cylindrical CFRP rod 110.

The carbon fiber reinforced plastics (CFRP) refers to a composite material that is a polymer (plastic) made by mixing carbon fiber or a fabric made of carbon fiber and a synthetic resin. CFRP is a state in which carbon fibers are infiltrated into a polymer (plastic) matrix according to a certain process. The carbon fibers provide high tensile strength and rigidity, and the polymer matrix wraps the fibers to maintain their shape as a structural material while providing impact resistance. do.

CFRP in the present invention has a net structure and a cylindrical rod structure and is placed inside the base coat 100 layer of the eco-friendly sound absorbing board, thereby forming a structural skeleton in the base coat 100 and providing a cylindrical space inside, It may be to enhance the sound absorption of the base coat layer.

Next, fly ash, waste glass powder, vermiculite powder, and a foaming agent are mixed in a ratio of 10:75:10:5 to 5:88:5:2 by weight, and then fired to prepare foamed glass. If the waste glass powder is mixed less than 75% by weight, the strength of the foamed glass manufactured from the mixed powder may decrease, and if it is mixed more than 88% by weight, the content of fly ash decreases and the temperature required for firing increases. The economic efficiency of manufacturing foam glass may be lowered.

The fly ash refers to coal ash collected by a dust collector from flue gas of a boiler that burns pulverized coal, and has the same particle size as cement. Alumina and silica are the main components and are used as admixtures in concrete. When mixed with waste glass powder and fired, it has the effect of lowering the firing temperature.

The waste glass powder means a powder obtained by pulverizing waste glass generated in daily life or industrially, and the waste glass pulverization is a first coarse pulverization and a second fine pulverization process of the waste glass to obtain a powder for manufacturing foamed glass from the waste glass. It means the step of crushing through. The secondary pulverization process is preferably performed by a wet pulverization process, and at least one solvent selected from the group consisting of water, ethyl alcohol, methyl alcohol, and acetone may be used as the solvent.

At this time, the particle size of the powder is 1 to 10 μm. The finer the particle size of the waste glass powder is, the more desirable it is, but considering the economical degree of pulverization, it is preferably about 1 to 10 μm.

The vermiculite is a mineral belonging to the monoclinic system having a crystal structure like mica, and is also called vermiculite. The color is grayish white or brown and has a pearl luster. It has the property of expanding when heated, and the expanded vermiculite has insulation and sound absorption properties, so it can be used as a building interior material.

If the foaming agent is mixed in less than 2% by weight, smooth foaming may not be achieved, and if mixed in more than 5% by weight, the strength of the foamed glass may be reduced.

The blowing agent may be any one blowing agent selected from the group consisting of Na ₂ CO ₃ , CaCO ₃ and Na ₂ SO ₄ . When the foaming agent is melted at the foaming temperature, the Na component acts as a fluxing agent and lowers the softening temperature of the raw material, and the decomposed CO ₂ and SO ₃ gases promote foaming of the glass.

Next, the foamed glass is pulverized to prepare foamed glass particles, and then the base coat 100 is prepared by mixing with cement, basalt particles, and an adhesion enhancer.

The base coat 100 is composed of a raw material having a high sound absorption transmittance, thereby minimizing the sound absorption loss of the compressed reinforced glass wool 200.

The foamed glass pulverization may be to pulverize the foamed glass into particles of 0.5 to 2 mm. When the foamed glass particles are smaller than 0.5mm, the sound absorption effect by the foamed glass may be reduced, and when the foamed glass particles are larger than 2mm, it is uneconomical and stable application may not be performed when the base coat 100 is applied.

In one embodiment, the step of preparing the base coat 100 may be mixing foamed glass particles, cement, basalt particles, and an adhesion enhancer in a weight ratio of 5 to 8: 2: 1: 1, respectively.

Next, the base coat 100 is applied on the top of the compressed glass wool 200, and the cylindrical CFRP rods 110 are disposed inside the base coat 100 layer at intervals of 5 mm, and then dried do.

The application of the base coat 100 may be applied by directly lamination using a hand tool such as a trowel or seawater, or may be applied by spraying.

The cylindrical CFRP rod 110 may be disposed horizontally or vertically inside the base coat 100 layer, but may be preferably vertically disposed.

The drying may use a drying method commonly used in the construction field, but may preferably use natural drying.

In one embodiment, the step is to insert a perforated metal thin film 120 at 5 mm intervals between the compressed glass wool and the base coat before applying the base coat 100 on top of the compressed glass wool 200 It may be to further include the step of doing.

In the present invention, by disposing the perforated metal thin film 120 between the compressed glass wool and the base coat, the sound absorption coefficient of the eco-friendly sound absorbing board manufactured through this may be further improved.

Finally, a finish coating 25 made of a modified acrylic emulsion is applied on top of the dried base coat 100 and then dried to manufacture an eco-friendly sound absorbing board.

The finish coating 25 may prevent fine dust that may fall off from the dried base coat 100 and may serve to prevent deformation due to environmental factors.

The modified acrylic emulsion component is resistant to external contamination or corrosion and maintains the original texture of the dried base coat 100.

Another aspect of the present application provides an eco-friendly sound absorbing board 350 manufactured by the manufacturing method.

Hereinafter, the configuration of the present invention and its effects will be described in more detail through specific examples and comparative examples. However, these examples are for explaining the present invention in more detail, and the scope of the present invention is not limited to these examples.

[Example 1]

First, a liquid binder is finely sprayed on mixed glass fibers composed of 70% by weight of inorganic glass fibers, 15% by weight of basalt fibers, and 15% by weight of ceramic fibers, and then shell powder having a particle size of 10 to 50㎛ is applied to the mixed glass fibers. Reinforced mixed glass fibers were prepared.

Next, the compressed reinforced glass wool 200 having a thickness of 20 mm and a density of 100 kg/m ³ is manufactured by compressing the reinforced mixed glass fibers with a press, and then the nonwoven fabric 220 is attached to the lower portion of the compressed reinforced glass wool 200 did

Next, a net structure CFRP membrane was manufactured using carbon fiber reinforced plastics (CFRP), and then the CFRP membrane was transformed into a cylindrical structure having a diameter of 2 mm to prepare a cylindrical CFRP rod 110.

Next, fly ash, waste glass powder, vermiculite powder, and Na ₂ CO ₃ as a foaming agent were mixed in a ratio of 10:75 and 10:5 by weight, put into a mold, and fired at 800° C. to prepare foamed glass.

The prepared foam glass is cooled and pulverized to prepare foam glass particles having a size of 0.1 to 3 mm, and then the foam glass particles, cement, basalt particle and adhesion enhancer are mixed in a weight ratio of 6: 2: 1: 1 to form a base coat (100 ) was prepared.

The base coat 100 is applied on top of the compressed glass wool 200, and the cylindrical CFRP rods 110 are disposed inside the base coat 100 layer at intervals of 5 mm, and then air-dried for 24 hours. did

An eco-friendly sound absorbing board 350 was prepared by applying a finish coating 25 on top of the dried base coat 100 and air-drying for 24 hours. The manufactured eco-friendly sound absorbing board 350 was named Example 1.

[Example 2]

Manufactured in the same manner as in Example 1, but before attaching the nonwoven fabric 220 to the lower portion of the compression reinforced glass wool 200, a flame retardant treated cork board between the compression reinforced glass wool 200 and the nonwoven fabric 220 210 is inserted, and before applying the base coat 100 on top of the compression-reinforced glass wool 200, a metal thin film perforated at 5 mm intervals between the compression-reinforced glass wool and the base coat A sound absorbing board was prepared by further including the step of inserting (120), which was named Example 2.

[Comparative Example 1]

It is manufactured in the same manner as in Example 1, but compressed glass wool is prepared without treating the liquid binder and shell powder on the mixed glass fibers, and the cylindrical CFRP rod 110 is placed inside the base coat 100 layer A sound absorbing board was manufactured in an unplaced form, and was named Comparative Example 1.

[Experimental Example 1 Sound absorption measurement experiment]

Sound absorption properties were measured for Examples 1 and 2 and Comparative Example 1.

KS F 2805: 2009 was applied for the test method, and the test results are shown in Table 1 below.

Test result Example 1 Example 2 Comparative Example 1 Frequency (Hz) Sound absorption coefficient (α) Frequency (Hz) Sound absorption coefficient (α) Frequency (Hz) Sound absorption coefficient (α) 100 0.35 100 0.40 100 0.26 160 0.39 160 0.44 160 0.27 250 0.41 250 0.53 250 0.30 400 0.58 400 0.62 400 0.39 630 0.77 630 0.77 630 0.57 1000 0.85 1000 0.85 1000 0.58 1600 0.95 1600 0.94 1600 0.60 2500 0.94 2500 0.93 2500 0.59 4000 0.89 4000 0.87 4000 0.56

As shown in Table 1, it was confirmed that all of Examples 1, 2, and Comparative Example 1 prepared by adding glass wool and foamed glass exhibited sound absorption, and in particular, Example 1 had improved overall sound absorption capacity compared to Comparative Example 1. It was confirmed that, in Example 2, compared to Example 1, it was confirmed that the sound absorption capacity was improved at low frequencies.

Although the embodiments of the present invention have been described in more detail with reference to the accompanying drawings, the present invention is not necessarily limited to these embodiments, and may be variously modified and implemented without departing from the technical spirit of the present invention. . Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. Therefore, the embodiments described above should be understood as illustrative in all respects and not limiting. The protection scope of the present invention should be construed according to the following claims, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

Therefore, other implementations, other embodiments, and equivalents of the claims are within the scope of the following claims.

25: finish coating
100: base coat
110: Cylindrical carbon fiber reinforced plastics (CFRP) rod
120: metal thin film
200: compressed reinforced glass wool
220: non-woven fabric
350: eco-friendly sound absorption board

Claims (3)

A liquid binder is finely sprayed on mixed glass fibers composed of 60 to 80% by weight of inorganic glass fibers, 10 to 20% by weight of basalt fibers, and 10 to 20% by weight of ceramic fibers, and then shell powder with a particle size of 10 to 50㎛ is mixed. Applying to glass fibers to prepare reinforced mixed glass fibers;
Manufacturing compressed reinforced glass wool 200 by compressing the reinforced mixed glass fibers with a press;
attaching a nonwoven fabric 220 to a lower portion of the compression-reinforced glass wool 200;
Manufacturing a net structure CFRP film using carbon fiber reinforced plastics (CFRP) and then transforming the CFRP film into a cylindrical structure having a diameter of 1 to 3 mm to produce a cylindrical CFRP rod 110;
preparing foamed glass by mixing fly ash, waste glass powder, vermiculite powder, and a foaming agent in a ratio of 10: 75: 10: 5 to 5: 88: 5: 2 weight% and then firing them;
preparing a base coat 100 by pulverizing the foamed glass to prepare foamed glass particles and then mixing them with cement, basalt particles, and an adhesion enhancer;
Applying the base coat 100 on top of the compressed glass wool 200 so that the cylindrical CFRP rods 110 are disposed at intervals of 5 mm inside the base coat 100 layer, and then drying; and
Applying a finish coating 25 made of a modified acrylic emulsion on top of the dried base coat 100 and drying it; Containing, the manufacturing method of the eco-friendly sound-absorbing board.
According to claim 1,
Further comprising the step of inserting a perforated metal thin film 120 at intervals of 5 mm between the compressed reinforced glass wool and the base coat before applying the base coat 100 on top of the compressed reinforced glass wool 200 A method for manufacturing a phosphorus, environmentally friendly sound absorbing board.
According to claim 1,
Before attaching the non-woven fabric 220 to the lower portion of the compression-reinforced glass wool 200, the step of inserting a flame-retardant cork board 210 between the compression-reinforced glass wool 200 and the non-woven fabric 220 is further included. To do, the manufacturing method of the eco-friendly sound-absorbing board.

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