KR20140141150A - A synthetic sturucture and the using method of rubber and fiber for decreasing noise thermo-insulation - Google Patents

Abstract

The present invention has an object to achieve a low-cost structure of the interlayer noise preventing means of a building by using a composite structure of rubber and fiber which forms a harmonious planar arrangement of an elastic material and a sound absorbing material.
This is a method of using a composite structure of rubber and fiber which is embedded between a concrete slab layer and a floor finishing layer where concrete is laid to divide the upper and lower layers of a building and is applied to reduce the interlayer noise of a building. The mixture is mixed with 20 to 40 parts by weight of MTMS (methyltrimethoxysilane) and 5 to 10 parts by weight of silicate with 20 to 30 parts by weight of an inorganic binder and mixing and stirring at a specific ratio based on 100 parts by weight of silica sol. To achieve a three-dimensional network structure based on 100 parts by weight of the mixture by silica sol-gel method, the bicarbonate was mixed in a ratio of 1 to 10 parts by weight, and the mixture was pressed on a mold or pressed by a pressure roller maintaining a range of 160 to 200, Fiber composite structure, and a composite structure of the rubber and the fiber is embedded between the concrete slab layer and the floor finishing material so that the interlayer noise of the building It is the invention of the technical idea to apply as the earthquake.

Description

Technical Field [0001] The present invention relates to a composite structure of rubber and fiber provided to improve insulation performance while reducing the interlayer noise of a building, and a method of using the same.

The present invention relates to a rubber / fiber structure used for reducing the interlayer noise of a building and a method of using the same. More particularly, the present invention is an invention for finding a means for reducing interlayer noise on the floor of an existing building.

In the prior art, a shock absorbing material such as a fiber mat, a rubber mat or a porous resin mat (styrofoam) is used on the floor of a concrete slab of a building to achieve an interlayer noise prevention structure. However, It is an invention of a technical idea to achieve a structure for reducing the interlayer noise of a building using a rubber / fiber structure that constitutes the arrangement.

In recent years, there have been a lot of civil complaints due to floor noise in the living spaces such as apartments and offices, and the problem of litigation has been increasing. In the reality, the floor noise standard has been strengthened. The impact sound of general buildings can be classified into light impact sound and heavy impact sound , "Light impact sound" refers to sound that is transmitted to the lower layer by impact applied to the floor when a small object falls on the floor or when the furniture is moved. The medium / high frequency band is somewhat higher and the noise level is similar in the entire frequency band , And 50 dB or less for apartment buildings.

In addition, the term "heavy impact sound" means a sound generated when a child is running or running, such as a sound generated when an adult walks, and has a characteristic of lowering the noise level in a low frequency band toward a high frequency band. Or less.

However, only the above-mentioned provisions are presented, but the above-mentioned conditions are not satisfied with the low-cost structure or the satisfactory layer-to-layer noise reduction structure can not be found.

1 illustrates a bottom slab structure used in a multi-family house such as an apartment building. The floor slab structure shown in FIG. A lightweight foamed concrete layer 2 placed on the concrete slab layer 1 for heat insulation to serve as a heat insulating material, a lightweight foamed concrete layer 2 for covering the upper and lower layers of the building, A concrete mortar layer 5 in which a noise reduction material layer 3 installed on the upper part of the layer 2 and a heating pipe 4 for heating the room are embedded and a floor finishing material 6) and so on, and the floor construction of the building is generally applied.

In the concrete slab structure having the above-described structure, even when a floor impact sound generated by a collision with the floor finishing material 6 is reduced by a floor finishing material 6 and a heat insulating material (such as foamable soft material) The floor impact sound, especially the heavy impact sound, which is generated by the collision of the impact with the floor finishing material 6, may cause a secondary noise generated due to the vibration on the ceiling surface of the lower layer, And the upper floor impact sound caused by the vibration of the wall (vibration) invites various complaints because it infringes on the living space of the tenant who lives in the lower floor.

In order to solve the above-mentioned problems, the thickness of the concrete slab layer is increased to 210 mm or more in order to minimize impact noise caused by vibrations generated in the lower ceiling or wall, thereby increasing the overall height of the building and increasing the construction cost In addition, there is a growing problem of safety management of buildings due to the increase of loads of buildings.

2 is a block diagram of an interlayer noise reduction method disclosed in Japanese Patent No. 0811747. The interlayer noise reduction method shown in FIG. 2 is shown in FIG. 2, The floor slab 101 is formed in a V-shape at a depth of about 2 to 5 mm on the surface portion of the concrete slab 100 of the building, and preparation work is performed to reduce shock waves transmitted directly to the vertical and horizontal portions In the next step, the primer is applied to the surface portion of the slab 100 and the V-shaped groove portion. The primer has a coating function for blocking the harmful gas emitted from the concrete and a primer application for imparting adhesion between the slab surface and the adhesive layer The primer layer 120 is formed on the primer coating layer and the sound insulating layer 130 is formed on the adhesive piercing layer 120 The upper surface of the soundproofing material layer 140 is formed with the adhesive tape 141 and the upper surface of the soundproofing material layer 140 is covered with the adhesive tape 141. The foamed concrete layer 150 is formed on the soundproofing material layer 140, And a bottom mortar layer 160 is formed on the upper part of the upper part of the heating pipe, such as a copper pipe or an excel pipe, while the finishing mortar layer 160 is formed on the upper part of the foamed concrete layer. And a method for covering the plate material is disclosed.

However, the above-mentioned registered technology is a high cost structure due to the use of too high grade raw materials, and thus it is difficult to apply the present invention with difficult limit to actual application due to an increase in construction cost at the current construction standard price.

The present invention has been made in view of the above-mentioned problems of the prior art, and it is an object of the present invention to provide a low-cost structure for preventing the interlayer noise of a building by using a rubber / fiber structure that achieves a harmonious planar arrangement of an elastic material and a sound- It is an invention that started with an assignment.

The present invention relates to a rubber chip obtained by crushing a rubber product waste generated as a by-product in various industrial fields such as the shoe industry, a newspaper rotator, etc., as well as a waste tire, and a fiber obtained by crushing a fiber by- The present invention has the object of providing a rubber / fiber structure which is blended with an inorganic binder to form a harmonious planar arrangement of an elastic material and a sound absorbing material, and to satisfy the requirements of the interlayer noise of a building using the same.

Another object of the present invention is to provide a rubber / fiber structure having a certain range of tensile strength and adhesive strength while taking advantage of the excellent physical properties of the rubber material and the flexibility properties of the fiber material, The present invention has an object to develop a manufacturing process of an industrial rubber / fiber structure in which the problem of pollution in an industrial field is solved by using an inorganic binder which does not have odor as a means for solving the problem of difficulty and causing complaints about the environment.

As a means for achieving the above object, the present invention is a technique for obtaining a rubber / fiber structure by using a rubber chip, which is a pulverized waste rubber, and a fibrous sole, which is an industrial byproduct, as a main raw material.

The method of manufacturing a rubber-fiber structure disclosed in the present application is a method for producing a rubber-fiber structure, which is a byproduct of industrial use, and is a waste rubber that is produced not only in waste tires but also as urethane rubber generated in the shoe industry, When a rubber chip obtained by crushing product waste is used, a rubber chip having a particle diameter of 1.0 to 4 mm can be obtained and the raw material can be prepared and applied.

In addition, when the rubber chips are vulcanized in the industrial rubber / fiber structure provided in the present invention, the weight is heavy and the flexibility is low. Therefore, a piece of phage fiber, which is a by-product of industrial use, is pulverized to obtain a fiber having a particle diameter of 0.1 to 10 mm And more preferably, when the waste polyester obtained together with the rubber chip is used in the process of obtaining the pulverized product of the waste tire, it is preferable to be applied so as to have the effect of two sets of one stone.

Further, in the process of manufacturing the rubber-fiber structure provided in the present invention, in the conventional rubber product processing step, a volatile organic solvent (VOC type such as benzene, toluene, xylene, methyl ethyl ketone, etc.) The inorganic binder used in the manufacturing process for obtaining the rubber-fiber structure of the present invention is a silica sol having a pH of 3 or less and a silica sol having an MTMS (Methyltrimethoxysilane) of 20 to 40 (Methyltrimethoxysilane), which is a mixture of 5 to 10 parts by weight of silica and 20 to 30 parts by weight of water, was prepared and used. As a result, MTMS (Methyltrimethoxysilane) that known as the permeable material and also 3 -OCH ₃ functional groups bonded to Si at the surface of the silica sol after the hydrolysis and condensation reaction of Is judged to be a response to that effect to increase the binding force, silicate Carry is determined to be functioning so that the rubber chips and fibers theory the binding force is not degraded in high temperature conditions.

In the present invention, 50 ± 10 parts by weight of the rubber chips, 35 ± 5 parts by weight of the fiber, and 15 ± 5 parts by weight of an inorganic binder based on the silica sol are mixed and stirred to obtain a blend mixture, A bicarbonate selected from sodium bicarbonate or potassium bicarbonate is mixed in a proportion of 1 to 10 parts by weight and heated to a temperature of 160 to 200 ° C to form a three- dimensional network structure by silica sol- Layer structure that forms a three-dimensional network structure while passing through a pressing roller that maintains the range of the surface of the substrate. The chemical substance that can form a three-dimensional network structure of the silicate by the silica sol-gel method is sodium bicarbonate, potassium bicarbonate, glyoxal, and ethylene glycol diacetate may be selected and used. However, a bicarbonate is preferable considering that an inorganic binder is used, and it is preferable that the bicarbonate is composed of 1.0 to 10 parts by weight based on 100 parts by weight of the blend mixture. When the bicarbonate is used in an amount of 1.0 part by weight or less, Silica gel does not occur and the three-dimensional network structure is not formed, so that the bonding force can be weakened. When the bicarbonate of 10 parts by weight or more is contained, the expression of the strength can be inhibited by excessive silica sol-gel reaction. It is preferable to use a bicarbonate to form a three-dimensional network structure.

The means for obtaining a rubber-fiber structure of a desired standard using the above-described flaky sheet may be a method in which 2 to 5 plate sheets are stacked in multiple in a press of a specific standard and are pressed by a press, or 2 to 5 The rubber / fiber structure can be easily obtained and cut by using a process in which a plate sheet is laminated in multiple layers and compression-molded.

Therefore, the rubber-fiber structure disclosed in the present invention is obtained by obtaining a waste rubber crushing chip, which is a by-product of industrial use, in a diameter range of 1.0 to 4.0 mm and a fiber raw material as a fiber crushed material in a diameter range of 0.1 to 10 mm, 20 to 40 parts by weight of MTMS (methyltrimethoxysilane) and 5 to 10 parts by weight of potassium silicate are mixed with 20 to 30 parts by weight of water to obtain an inorganic binder, and 50 to 10 parts by weight of the rubber crushing chips, 35 ± 5 parts by weight of the inorganic binder and 15 ± 5 parts by weight of the inorganic binder are mixed and stirred to form a three-dimensional network structure based on 100 parts by weight of the silica sol-gel method. Sodium bicarbonate or bicarbonate Potassium bicarbonate is mixed in a ratio of 1 to 10 parts by weight and is pressed into a mold by pressing rollers which maintain the temperature in the range of 160 to 200 ° C. to form a sheet, Confirmed that this be achieved by the resilient mat is a complete invention.

The sheet-like sheet obtained according to the manufacturing process of the present invention can be provided as a rubber-fiber structure excellent in soundproof effect, dustproofing effect and heat insulating effect by arbitrarily adjusting the thickness of the sheet as necessary.

As described above, in the present invention, the rubber fiber structure, which is made by using the rubber chip as the pulverized rubber material and the fibrous sole as the main raw material for industrial use, is used as a useful material for various industries, and recycled waste material is used for industrially useful purposes It is possible to protect the environment and improve the economical efficiency, as well as to provide a rubber / fiber structure which further enhances physical properties such as strength and durability.

Fig. 1 is a side perspective view of a conventional technology used to reduce a light impact sound or heavy impact sound in a general building. Fig.
Fig. 2 is a side perspective view of an application example used to reduce a light impact sound or heavy impact sound of a building disclosed in the prior art.
Fig. 3 is an application example for preventing interlayer noise disclosed in the present application. Fig.

The present invention relates to a rubber composition comprising a rubber chip, which is a waste rubber compound, and a fiber product, which is a byproduct of industrial use, as a main raw material and has elasticity and flexibility for industrial use, for example, for reducing noise in a room, (VOC type such as benzene, toluene, xylene, methyl ethyl ketone, etc.) is used as a base material in the production of rubber products as in the prior art. (Sodium bicarbonate) or potassium bicarbonate (sodium bicarbonate) to obtain a three-dimensional network structure by the silica sol-gel method before the compression step of the final combination using silica sol to obtain an inorganic binder, To ensure a certain range of tensile strength and adhesive strength by bonding bicarbonate Is a complete invention confirmed that to obtain a crude product.

A preferred embodiment for obtaining the rubber-fiber structure provided herein is described below, but it should be understood that the present invention is not limited to the embodiment It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

The embodiments shown in Tables 1 and 2 below illustrate embodiments presented by the present inventors as optimal best modes that can be applied to achieve the objects of the present invention undergoing various trial and error.

First, in the preparation of the raw material, the waste rubber is pulverized to obtain a rubber chip having a particle size of 1.0 to 4 mm, an experimental raw material is prepared with a standard product of 2 to 3 mm in diameter, and a pulverized poly The ester fiber yarn was prepared with a standard product of 4 to 5 mm.

The inorganic binders prepared herein were prepared in the same manner as in Examples 1, 2 and 3 shown in Table 1 on a glass plate in order to make an inorganic binder sample in three different compositions as shown in Table 1 and to evaluate the adhesion to each sample Was applied to a thickness of 0.1 mm and five synthetic resin plates each having a width of 1.0 cm and a thickness of 1.0 cm and a thickness of 0.1 mm were attached to each sample. After 30 minutes, the synthetic resin plate was peeled off, The strengths were measured and the measured values were determined as average values by measuring five peel strengths. The results are shown in Table 1. In addition, when the inorganic binders of the present invention were subjected to a rubber-fiber structure at a high temperature of 180 to 200 ° C Two pieces of synthetic resin plates each having a thickness of 1 cm * 1 cm * 0.1 mm were attached to each other, and the synthetic resin plate was peeled off after 30 minutes. The 180 ° peel strength was measured and the degree of thermal bonding was observed. After taking the case of the remaining membrane it was determined to be composed of the thermal bonding.

 division  Sample 1  Sample 2  Sample 3  Silica sol  10.0  10.0  10.0  MTMS  3.0  2.0  3.5  Calcium silicate  0.7  1.0  0.5  water  2.3  3.0  2.0  Composition system  16.0  16.0  16.0  Adhesion (g / cm)  38.5  36.7  37.2  Thermal bonding degree  fitness  fitness  fitness

The inorganic binder shown in Table 1 is prepared by mixing 20 to 40 parts by weight of MTMS (methyltrimethoxysilane) and 5 to 10 parts by weight of silicate with 20 to 30 parts by weight of water based on 100 parts by weight of silica sol having a pH of 3 or less The inventors of the present invention have confirmed that the present invention can be used as an inorganic binder that secures desired adhesive strength.

The inventors of the present invention used the raw materials prepared above to mix 50 ± 10 parts by weight of rubber chips, 35 ± 5 parts by weight of a rubber chip and 15 ± 5 parts by weight of an inorganic binder in the composition shown in the following Table 2, And finally a mixture of sodium bicarbonate at a ratio of 1 to 10 parts by weight based on 100 parts by weight of the compound mixture is obtained and a rubber fiber structure is obtained through a pressing roller which is maintained at 160 to 200 ° C, Hardness, adhesive strength, and ozone cracking of the test specimens. The experimental results are shown in Table 2.

 division  Example 1  Example 1  Example 1  Comparative Example  Remarks
basic
Raw material  Rubber chip  5.0  6.0  4.0  7.0  2-3 mm standard  Fiber optics  3.5  3.0  4.0  2.0  4-5 mm standard  Inorganic binder  1.5  1.0  2.0  1.0 Sample 1 of Table 1
use
Rubber
product  Subcategory of basic raw materials  10.0  10.0  10.0  10.0 Use pressure roller to maintain 190 ℃  Sodium bicarbonate 0.5  0.3  0.7  0.5
Experiment
result  Tensile Strength (Mpa)  14.2  13.8  13.5  9.2
KS M 6518 (2006)  Hardness (Hs)  63.2  64.1  53.4  45,3  Adhesion strength (kN / m)  18.4  17.8  18.1  16.2  Ozone cracking experiment  No crack No crack No crack Cracking

According to the results shown in Table 2, tensile strength is less than 10 MPa when the mixing ratio of the rubber chips is 50 ± 10 parts by weight, the fiber length is 35 ± 5 parts by weight and the inorganic binder is 15 ± 5 parts by weight. It was confirmed that cracks appeared in the ozone cracking experiment and the results were inadequate.

Noise reduction effect measurement.

The inventor of the present invention has found that a concrete slab layer 1 and a slab layer 1 in a floor slab structure generally used in a apartment house such as an apartment house shown in Fig. The lightweight foamed concrete layer 2 to be placed on the upper portion of the foamed concrete layer 1 to serve as a heat insulating material is performed in the conventional manner and the fiber aggregation body 20 shown in FIG. 3A is filled on the foamed concrete layer 2, 30 and a composite structure of the rubber and fiber provided in the upper part is laminated on the upper part of the furnace, and the remaining part is applied to the finishing mortar layer 5 in which the indoor heating heating pipe 4 shown in FIG. 1 is buried. And floor finish material 6 installed on the bottom floor of the upper floor of the finish mortar layer 5, and to measure the noise reduction effect The.

The fiber aggregate 20 shown in FIG. 3A is mixed with 85 ± 5% by weight of the fiber binder and 15 ± 5% by weight of the inorganic binder provided herein. The fiber binder 20 is then subjected to a heat treatment at about 180 ° C. and a pressure of about 550 tons at about 10 The fiber composite body 20 is made to have a size of a size of 99 * 99 * 16 mm in height, width, height, and thickness of 4 mm with the synthetic rubber plate 10 shown in FIG. 3 (b) The sound insulation layer 30 is formed by means of inserting the fiber aggregate 20 of the synthetic rubber sheet 10 into the lattice space of the synthetic rubber plate 10 and finishing the gap portion with an adhesive tape, The composite structure was made to have a size of 101 * 101 * 10 mm in height, 101 * 101 * 10 mm in height, and the joints of the fiber aggregate 20 and the rubber / And then A concrete mortar layer 5 in which a heating pipe 4 for indoor heating is embedded as in the embodiment of Fig. 1 and a floor finishing material 6 which forms a floor of the room by forming a finishing mortar layer 5, Impact sound and heavy impact sound were performed. The results are shown in Table 3.

 Test Items  unit Test result Test Methods Remarks Strength of backward A by standard lightweight impact circle Weighted Normalized floor impact sound level
(L'n, AW)
dB
27 KS F 2801-1: 2001
KS F 2863-1: 2002
Meets current noise standards Standard A weighted impact sound A
(L'n, AW)
dB
46 KS F 2801-2: 2001
KS F 2863-2: 2007
Meets current noise standards

Therefore, the rubber-fiber structure provided in the present invention can solve the pollution problem in the field by using an organic binder as in the conventional manufacturing process, And the rubber-fiber structure is excellent in the effect of reducing the weight impact sound and the light impact sound.

In the above description, the foamed concrete layer 2 on the bottom surface of the concrete slab 1 shown in FIG. 1 has a structure of reducing the interlaminar noise on the floor surface of the building using the rubber- And the fiber composite body 20 is laid on the fiber composite body 20 and the composite structure of rubber and fiber provided herein is laminated on the fiber composite body 20. However, the fiber composite body 20 provided with the technical idea of the present invention In addition to the composite structure of rubber and fiber, a fiber-based mat, a rubber-based mat, a porous resin mat (styrofoam), and other shock-absorbing materials disclosed in the prior art may be applied to the present invention It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention, The above shall be equally applied to the contents of the claims and shall be protected to the equivalents.

1: concrete slab layer 2: lightweight foamed concrete layer
3: Noise reduction material layer 4: Heating piping for indoor heating
5: Finishing mortar layer 6: Floor finish
10: Rubber plate frame 20: Fiber coalescing material
30: Sound insulation layer

Claims (4)

A method of using a composite structure of rubber and fiber, which is embedded between a concrete slab layer and a floor finishing material layer in which concrete is laid so as to divide the upper and lower layers of the building,
A rubber chip having a particle diameter of 1.0 to 4 mm is obtained by pulverizing waste rubber which is a by-product of industrial use, and a piece of phage fiber which is a by-product of industrial use is pulverized to obtain a fibrous base having a particle diameter of 0.1 to 10 mm. MTMS (Methyltrimethoxysilane) 20 to 40 parts by weight of an inorganic binder and 20 to 30 parts by weight of water in an amount of 5 to 10 parts by weight of potassium silicate to prepare an inorganic binder and mixing 50 ± 10 parts by weight of the rubber chips and 35 ± 5 parts by weight of the above- In order to obtain a three-dimensional network structure based on 100 parts by weight of the compounding mixture obtained by mixing and stirring at the ratio of 15 ± 5 parts by weight of the above-mentioned inorganic binder, sodium bicarbonate or potassium bicarbonate The selected bicarbonate is mixed in a ratio of 1 to 10 parts by weight, and the resulting mixture is pressed on a pressing roller holding a temperature in the range of 160 to 200 ° C to obtain a composite structure of rubber and fiber on a sheet, How to use the composite structure of the non-fiber reinforced concrete slab floor with a built-in between the floor finishing material rubber, synthetic structure of the fibers, characterized in that the interlayer is applied to the noise prevention structures. The method according to claim 1,
Characterized in that the fiber-reinforced composite structure is used in combination with the fiber-reinforced composite of 85 ± 5% by weight and the fiber-reinforced composite of 15 ± 5% by weight of the inorganic binder, Usage of composite structure of rubber and fiber. A composite structure of rubber and fiber, which is provided between a concrete slab layer in which concrete is laid so as to divide the upper and lower layers of the building and a bottom finishing material layer so as to be used for reducing the interlayer noise of the building,
A rubber chip having a particle diameter of 1.0 to 4 mm is obtained by pulverizing waste rubber which is a by-product of industrial use, and a piece of phage fiber which is a by-product of industrial use is pulverized to obtain a fibrous base having a particle diameter of 0.1 to 10 mm. MTMS (Methyltrimethoxysilane) 20 to 40 parts by weight of an inorganic binder and 20 to 30 parts by weight of water in an amount of 5 to 10 parts by weight of potassium silicate to prepare an inorganic binder and mixing 50 ± 10 parts by weight of the rubber chips and 35 ± 5 parts by weight of the above- In order to obtain a three-dimensional network structure based on 100 parts by weight of the compounding mixture obtained by mixing and stirring at the ratio of 15 ± 5 parts by weight of the above-mentioned inorganic binder, sodium bicarbonate or potassium bicarbonate The bicarbonate to be selected is mixed in a ratio of 1 to 10 parts by weight and is supplied as a composite structure of rubber and fiber on a sheet by putting it on a pressing roller which is kept in a range of 160 to 200 ° C. Interlayer noise preventing structure of the synthetic rubber, fibers, characterized. The method of claim 3,
Characterized in that polyester fiber powder generated during the pulverization of the waste tires is used as the fiber structure of the composite material of rubber and fiber.

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