KR101054067B1 - Paints composition for soundproofing of inter layer noise comprising multiwall carbon nanotube and preparation method thereof - Google Patents

Abstract

PURPOSE: A paint composition is provided to enable the application to a laminate floor, plywood floor, and wood floor, to block the toxicity generated from cement, and to prevent the noise and vibration generated between the up and down layers of an apartment. CONSTITUTION: A paint composition for reducing inter-layer noise comprises 0.1~20 weight% of a ground compound, 20~30 weight% of an aqueous ethylene vinyl acetate resin, 20~30 weight% of ion exchanged water, 25~40 weight% of calcium carbonate, 2~4 weight% of titanium dioxide, 0.1~1 weight% of ferric oxide and 0.1~4 weight% of multi-walled carbon nanotube. The ground compound includes mineral powder. The mineral ground compound comprises 50 ~ 96 weight% of an oyster shell ground compound processed at 1500-1600 °C and 1~20 weight% of the ground compound of aluminum oxides, potassium oxides, magnesium oxides, and calcium carbonates processed at 1100-1200 °C.

Description

PAINTS COMPOSITION FOR SOUND PROOFING OF INTER LAYER NOISE COMPRISING MULTIWALL CARBON NANOTUBE AND PREPARATION METHOD THEREOF}

The present invention relates to a paint composition for reducing noise between floors of a building and a method of manufacturing the same. More specifically, the present invention can be applied to reinforced floors, plywood floors, solid wood floors, etc. To reduce noise between floors of buildings containing multi-walled carbon nanotubes to block the noise and vibration generated between the upper and lower floors of multi-family houses, multi-family houses, officetels, etc. It relates to a paint composition and a method of manufacturing the same.

In general, floors such as buildings are being constructed in various forms. Among them, flooring of residential buildings such as single-family homes, apartments, villas, etc. is applied by applying aerated concrete on reinforced concrete slabs, then laying heating pipes on them, finishing them with cement mortar, and finishing them with synthetic resin or floorboards of a certain thickness. It is.

However, the floor of the structure as described above, but the concrete foamed on the upper surface of the reinforced concrete slab acts to attenuate the noise, but the noise attenuation effect is not so excellent, it does not absorb and block the noise according to various impact sounds properly Have

It has the attenuation effect on the gas transfer noise generated by human voice and various acoustic equipments, but the function of attenuating and blocking solid transfer noise caused by human walking and falling of objects on the upper floor is poor. For losing.

Due to the problem that the floor structure of the MDU cannot effectively absorb and block the noise between floors, the problems caused by the noise between floors have become more serious. The use of abatement materials that reduce interlayer noise in the liver has become mandatory.

Accordingly, interlayer noise reduction materials using various materials have been developed. Among them, styrofoam (foamed polystyrene) laid between reinforced concrete slab layers and foamed concrete layers has excellent thermal insulation performance, but has a low sound insulation and sound absorption effect. In addition, the polyethylene uncrosslinked resin layer or the polyethylene chemical crosslinked resin layer has a problem in that sound insulation and structural stability are poor.

In addition, although thermal insulation and interlayer reduction materials for flooring and walls using waste rubber and waste urethane have been developed, the finely ground mixture of waste rubber and waste urethane is insoluble in water. A type adhesive or a polyurethane adhesive is used.

Such waste rubber and flooring using waste urethane have a problem that many cracks and cracks occur as the urethane is cured, and it is a harmful substance emitted by volatilization of the materials used as adhesives, which may cause serious problems that may damage the health of residents. do.

For example, an impact such as a dropping of an object on the floor or moving a chair generates a solid transmission sound, which is transmitted through the floor slab and the walls to other rooms, especially through the floor slab. What is delivered to the lower floor is called interlayer noise.

As such inter-floor noise problems emerged seriously in apartment buildings, regulations on housing construction standards, etc., have been strengthened and revised. The regulations stipulate that the floor impact sound between floors should be less than 58 decibels (dB) and the weight impact sound should be less than 50 decibels (dB) or standard floor structure as determined and announced by the Minister of Construction and Transportation.

The above-mentioned prior arts all constitute a separate noise blocker on the top of the floor slab of the building to block the noise between floors, but the materials of the noise blockers are different and expensive, and the materials are relatively hard or As a soft thing, only the sound of either the heavy shock sound or the light impact sound is shielded, so there is a problem in that the light impact sound and the heavy shock sound cannot effectively shield the interlayer noise.

In addition, in manufacturing the interlayer noise absorbing material, the structure is not simple and complicated, there is a problem such as the production cost as well as the increase in construction costs.

The present invention has been proposed to overcome the limitations of the prior art as described above, the main purpose of which can be applied to reinforced floor, plywood floor, solid wood floor, etc., and at the same time block the toxicity generated in cement, apartments, Paint composition for reducing noise between floors that blocks noise and vibration generated between upper and lower floors of multi-family houses such as villas, multi-family houses and officetels, improves the insulation performance of buildings, and facilitates construction. In providing.

The technical problem of the present invention as described above is achieved by the following means.
(1) 50 to 96% by weight of each corner milled at 1500 ° C to 1600 ° C, and 1 to 20% by weight of a milled product of aluminum oxide, potassium oxide, magnesium oxide, and calcium carbonate processed at 1100 ° C to 1200 ° C, respectively. 0.1-20% by weight of a pulverized mixture consisting of mineral pulverized products comprising%; 20-30 wt% of an aqueous ethylene vinyl acetate (EVA) resin; 20-30% by weight of ion-exchanged water; Calcium carbonate 25-40% by weight; Titanium dioxide 2-4% by weight; Iron oxide 0.1-1% by weight; And 0.1 ~ 4 wt% of multi-walled carbon nanotubes.

(2) The method according to 1,
A paint composition for reducing noise between floors of a building, wherein the average particle diameter of the paint is 0.2 to 1.0 μm.

(3) The method according to 1,
A paint composition for reducing interlayer noise of a building, further comprising an aqueous pigment.

(4) (1) an aqueous ethylene vinyl acetate (EVA) resin, ion-exchanged water, calcium carbonate, titanium dioxide, and iron oxides were added to a mixed stirrer, and each milled product processed at 1500 ° C to 1600 ° C, and A first step of mixing a pulverized mixture consisting of a mineral pulverized product comprising 1 to 20% by weight of a pulverized product of aluminum oxide, potassium oxide, magnesium oxide and calcium carbonate processed at 1100 ° C. to 1200 ° C .; And
(2) A method for producing an interlayer noise reduction paint for a building comprising a second step of injecting multi-walled carbon nanotubes into the mixture of the first step.

(5) The method according to 4,
50 to 96% by weight of each corner milled at 1500 ° C to 1600 ° C, and 1 to 20% by weight of a milled product of aluminum oxide, potassium oxide, magnesium oxide and calcium carbonate processed at 1100 ° C to 1200 ° C, respectively. 0.1 to 20% by weight of a pulverized mixture consisting of a mineral pulverized; 20-30 wt% of an aqueous ethylene vinyl acetate (EVA) resin; 20-30% by weight of ion-exchanged water; Calcium carbonate 25-40% by weight; Titanium dioxide 2-4% by weight; Iron oxide 0.1-1% by weight; And 0.1 to 4% by weight of multi-walled carbon nanotubes.

(6) the method according to 4,
Method for producing a layer-based noise reduction paint of a building further comprising the step of injecting an aqueous pigment.

(7) The process according to 4, wherein the grinding mixture is
1) washing process using distilled water,
2) wet grinding process using a ball mill,
3) drying process using electric drying furnace,
4) A method for producing an interlayer noise reduction paint of a building, which is obtained by a dry grinding process using Z-Mill or Nano-Mill.

(8) Floor noise reduction materials of buildings to which the coating composition according to (1) is applied.

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

delete

Reinforced floor, plywood floor, wood floor of the building using the environmentally friendly paint and multi-walled nanotubes building floor noise reduction material and manufacturing method. Toxic from the cement can be blocked. More specifically, it blocks noise and vibration generated between the upper and lower floors of apartments such as apartments, villas, multi-family houses, officetels, etc., improves the insulation performance of the building floor, and facilitates construction.

The present invention is 50 to 96% by weight of each crushed mill processed from 1500 ℃ to 1600 ℃, and 1 to 20 wt% of a milled powder of aluminum oxide, potassium oxide, magnesium oxide and calcium carbonate processed at 1100 ℃ to 1200 ℃ 0.1-20% by weight of a pulverized mixture consisting of mineral pulverized products comprising%; 20-30 wt% of an aqueous ethylene vinyl acetate (EVA) resin; 20-30% by weight of ion-exchanged water; Calcium carbonate 25-40% by weight; Titanium dioxide 2-4% by weight; Iron oxide 0.1-1% by weight; And it provides a paint composition for reducing the interlayer noise of buildings comprising 0.1 to 4% by weight of multi-walled carbon nanotubes.

In the present invention, the grinding mixture is defined as a mixture containing aluminum oxide (Al ₂ O ₃ ), potassium oxide (K ₂ 0), magnesium oxide (MgO), and calcium carbonate (CaCO ₃ ) as minerals in each grinding mill. do. For example, such a pulverized product is not particularly limited to the corner angle with respect to 100% by weight of the pulverized mixture, but contains 50 to 96% by weight, and includes aluminium oxide (Al ₂ O ₃ ) and potassium oxide (K) as minerals therein. ₂₀ ), magnesium oxide (MgO), and calcium carbonate (CaCO ₃ ) each containing 1 to 20% by weight.

delete

Such a pulverized mixture includes 1) a washing process using distilled water, 2) a wet grinding process using a ball mill, 3) a drying process using an electric drying furnace, and 4) a Z-Mill or a Nano-Mill. It can be obtained by a dry grinding process using. In more detail, the grinding mixture is formed by processing the shell of the oyster clam at 1500 ° C to 1600 ° C, aluminum oxide (Al ₂ O ₃ ), potassium oxide (K ₂ 0), magnesium oxide (MgO), and carbonic acid. It consists of processed minerals such as calcium (CaCO ₃ ) at about 1100 ℃ to 1200 ℃, wet mills obtained using these ball mills are Z-Mill and Nano-Mill (Nano-Mill) ) Is processed into a nanopowder (average particle size: 1 µm or less), which is used as a raw material of the present invention.

The grinding mixture is preferably added in an amount of 0.1 to 20% by weight based on 100% by weight of the paint composition of the present invention, and if it is added in an amount of less than 0.1% by weight, it is difficult to expect sufficient sound absorption and sound insulation effects, and exceeds 20% by weight. In this case, there is a risk of inhibiting the physical properties of the paint.

Multi-walled nanotubes (Multi-wall Nanotube) is recommended to use a modified multi-walled carbon nanotubes or super-bundle multi-walled carbon nanotubes in consideration of the dispersibility. For example, commercially available product name CM-100 (Hanwha Nanotech Co., Ltd.), which has a diameter of 10 ~ 15nm (HR-TEM method measurement), length ~ 200um (SEM method measurement), and component content 95wt.% (KSD2711 measurement), curved area 225m ² / g (BET method measurement), surface area ~ 0.05g / cc (tapping method measurement). Such carbon nanotubes are preferably added in an amount of 0.1 to 4% by weight. If the carbon nanotubes are added in an amount of less than 0.1% by weight, it is difficult to expect sound insulation or sound absorption effects.
These finely ground grinding mixtures (including angles and minerals) and multi-walled carbon nanotubes significantly reduce interlayer noise with excellent sound absorption and sound insulation, and have excellent thermal conductivity when applied to flooring flooring. By removing harmful substances and toxic substances generated in cement and synthetic resins.

The paint composition of the present invention comprises an aqueous ethylene vinyl acetate (EVA) resin. Water-based EVA resin has a unique elasticity, thereby resulting in excellent adhesion of the object, and provides excellent adhesion in coating with an anti-adhesive paint on the object such as steel, concrete, aluminum, ceramic, glass, and synthetic resin. In addition, it provides non-toxicity to improve ozone and weather resistance, and to reduce the elongation change. The content of the coating composition of the aqueous EVA is preferably 20 to 30% by weight, and when added to less than 20% by weight, it is difficult to form a desired coating film due to poor adhesive strength. There is concern.

Ion-exchanged water uses water obtained by passing an ion-exchange resin in which a three-dimensional polymer gas is bound to an ion exchanger. The paint containing ion-exchanged water does not deteriorate the subject due to various salts and is added to the paint at the same time. By optimizing the dispersion of these, it helps to form a uniform coating surface. The content of the ion exchanged water in the coating composition is preferably 20 to 30% by weight, and when added in an amount less than 20% by weight, there is a problem in the physical properties and dispersibility of the paint. There is a concern.

The paint composition according to the present invention contains calcium carbonate, titanium dioxide and iron oxide, preferably 25 to 40 wt% calcium carbonate, 2 to 4 wt% titanium dioxide, and 1 wt% or less iron oxide. Preferably, containing 0.1 to 1% by weight can maximize the non-combustible properties, adhesion increase and UV blocking effect.

In addition, the coating composition according to the present invention may further contain various aqueous pigments that may be added to a general aqueous paint.

Each of the additives added to the present invention penetrates into the coating film firstly without any distinction of the object, and secondly forms a film to provide strong adhesive force, and at the same time, excellent sound insulation or sound absorption effect, and is very effective as an interlayer noise reduction material in buildings. useful.

The interlayer noise reduction material according to the present invention uses a brush, a roll, an iris, a spray gun, etc. on the back of the floor in the production process of reinforced floor, plywood floor, wood floor, and the thickness of the coating is 1.0-2.0 mm (mm). It can be prepared by forming a film through a process of applying and drying at room temperature if possible.

Hereinafter, the manufacturing method of the paint composition according to the present invention will be described.
The coating composition of the present invention is prepared by (1) adding an aqueous ethylene vinyl acetate (EVA) resin, ion-exchanged water, calcium carbonate, titanium dioxide, and iron oxide to a mixed stirrer and processing it at 1500 ° C to 1600 ° C. A first step of mixing a grinding mixture consisting of each grinding mill and a mineral mill including a mill of aluminum oxide, potassium oxide, magnesium oxide and calcium carbonate processed at 1100 ° C. to 1200 ° C .; And
(2) a second step of introducing multi-walled carbon nanotubes into the mixture of the first step.
In the first step, 22 to 24% by weight of the aqueous EVA resin is mixed with 20 to 22% by weight of ion-exchanged water, and a liquid binder is added thereto, and 29 to 31 weight of calcium carbonate while gradually stirring at 150 to 250 rpm per minute. The grinding mixture consisting of%, 2 to 4% by weight of titanium dioxide and 1% by weight of iron oxide is slowly added while stirring.
At this time, the liquid binder is not particularly limited, and for example, a polyacetate system (for example, PVA-205 / Kuraray Co., Ltd.) is suitable, and the amount of the binder is 10 to 20 weight parts based on 100 parts by weight of the total paint composition. It can be used.

0.1 to 14% by weight of the pulverized mixture was added thereto, and the mixture was stirred at a low speed of 150 to 200 rpm through a stirrer. The mixture obtained at this time is made of a water-soluble, environmentally friendly paint which is free of odors and harmless to the human body by the added grinding mixture.

delete

delete

delete

In the present invention, the grinding mixture is preferably 1) washing with distilled water, 2) wet grinding using a ball mill, 3) drying using an electric dryer, 4) Z-Mill or nano-mill It is obtained by a series of processes including the dry grinding process using.

Each process for obtaining the pulverized mixture is described with more specific examples as follows.

In the grinding mixture, the angle (oyster, shell processing) is subjected to several washing steps, and then distilled water is added to the ball mill, and the inside of the ball mill is filled with alumina balls having a diameter of 5 to 20 mm of ceramic material. The ball mill is first pulverized at a low speed of 150 to 250 rpm (milling time 72 to 80 hours), and after checking the particles in the middle, when the appropriate particle size (10 to 20 μm) is taken out, the pulverized shape is taken out and alumina sega (sega ) And put into an electric tunnel furnace and dry it. (Electric furnace condition: 5 ℃ / min rise, naturally cool after 45 minutes at 300 ~ 450 ℃). After that, it is pulverized into nano powder (1-5 μm or less) using Z-Mill or Nano-mill manufactured by Seshin Corporation of Japan.

Moreover, aluminum oxide, potassium oxide, magnesium oxide, and calcium carbonate are mixed in a ball mill as a mineral component. At this time, preferably, the inside of the ball mill is filled with zirconia balls (diameter 3 to 15 mm) and distilled water (starting material raw material: 5 to 10 μm or less). The milled mixture is then taken out and dried in an electric dryer. At this time, the pulverized mixture entering the electric furnace is preferably put in Sega made of zirconia material, and raised 3 ~ 4 ℃ / min, maintained at 350 ~ 400 ℃ for 40 to 50 minutes, again raised 3 ~ 4 ℃ / min 1100 Cool naturally after 60 to 80 minutes at ℃ ~ 1120 ℃.

The dried pulverized mixture as described above may be processed and sorted into nano powder (D50: 0.2 ~ 1.0 μm or less) using a G-mill or a nano-mill and provided as a raw material of the first step.

The nano-powder manufactured as described above obtains uniformity and cohesiveness of the particle size, and when using a coating material containing the same, it penetrates into the coating film first without any distinction of the object, and forms the film secondly, and has strong adhesive force. The effect as a paint can be acquired.

In a second step, 0.1 to 4% by weight of the multi-walled carbon nanotubes are mixed with the mixture of Step 1.

The average particle diameter of the paint particles contained in the final paint composition obtained through the above process is preferably 0.2 to 1 ㎛ in optimizing the desired effect of the present invention.

More specific manufacturing method of the paint composition according to the present invention will be described through the following examples. However, these examples are only presented to understand the content of the present invention and do not limit the scope of the present invention.

Example 1 Preparation of Paint
24% by weight of an aqueous EVA resin, 22% by weight of ion-exchanged water, 31% by weight of calcium carbonate, 4% by weight of titanium dioxide, and 1% by weight of iron oxide were placed in a stirrer, and a pulverized mixture having an average particle diameter of 0.2 to 1.0 µm (crushing mixture 100 80% by weight of each pulverized product and 5% by weight of aluminum oxide, 5% by weight of potassium oxide, 5% by weight of magnesium oxide, and 5% by weight of calcium carbonate) were mixed with respect to the weight%, and the liquid binder The vinyl acetate (PVA-205, Kuraray Co., Ltd.) was stirred at 250 rpm for 120 minutes while adding 10 parts by weight to 100 parts by weight of the total coating composition.
The coating composition according to the present invention was prepared by stirring at 200-250 rpm for 50 minutes while adding 4 wt% of multi-wall nanotubes (CM-100).

Example 2 Preparation of Paint
20% by weight of the aqueous EVA resin, 20% by weight of ion-exchanged water, 31% by weight of calcium carbonate, 4% by weight of titanium dioxide, and 1% by weight of iron oxide were placed in a stirrer, and a pulverized mixture having an average particle diameter of 0.2 to 1.0 µm (crushing mixture 100 80% by weight of each pulverized product and 5% by weight of aluminum oxide, 5% by weight of potassium oxide, 5% by weight of magnesium oxide, and 5% by weight of calcium carbonate) were mixed with respect to the weight%, and the poly binder was used as a liquid binder. The vinyl acetate (PVA-205, Kuraray Co., Ltd.) was stirred at 250 rpm for 50 minutes while adding 10 parts by weight to 100 parts by weight of the total coating composition.

A coating composition according to the present invention was prepared by stirring at 200-250 rpm for 50 minutes while adding 4 wt% of multi-wall nanotubes (CM-100).

delete

delete

delete

delete

delete

Experimental Example 1

Table 1 shows the measurement results of various properties carried out by the Korea Testing and Research Institute (Report No .: TAK-014250) using the coating material obtained according to the embodiment of the present invention.

  Test Items    unit Sample classification    Results        Test Methods  VOCs      %     0.031  ISO 11890-2: 2006 (GC / FID)  toluene    mg / kg   Not detected  US EPA 5021: 1996  Formaldehyde    mg / kg   Not detected  US EPA 8315 A: 1996 (HPLC)

As in the experimental results, the coating composition according to the present invention can be confirmed that volatile compounds or toxic substances are hardly generated.

Experimental Example 2

The paint composition according to the embodiment of the present invention is applied to the floor covering of the apartment to reduce the noise between the floors and the impact noise reduction characteristics are performed by the method of KS F 2810 using a tapping machine which is a lightweight impact sound generator, and the results are shown in Table 2 below. Indicated. At this time, Comparative Example 1 was to apply a general paint (product of A company), not the paint according to the present invention.

division 125 Hz 500 Hz 2000 Hz Example 1 34 31 28 Example 2 33 31 29 Comparative Example 1 76 70 68

As described above, it was confirmed that the paint composition according to the present invention can effectively reduce the noise between the floors of the apartment by a simple construction method applied simply to the bottom of the floor.

As described above, it has been described with reference to a preferred embodiment of the present invention, but those skilled in the art various modifications and changes of the present invention without departing from the spirit and scope of the invention described in the claims below I can understand that you can.

Claims (9)

50 to 96% by weight of each corner milled at 1500 ° C to 1600 ° C, and 1 to 20% by weight of a milled product of aluminum oxide, potassium oxide, magnesium oxide and calcium carbonate processed at 1100 ° C to 1200 ° C, respectively. 0.1 to 20% by weight of a pulverized mixture consisting of a mineral pulverized; 20-30 wt% of an aqueous ethylene vinyl acetate (EVA) resin; 20-30% by weight of ion-exchanged water; Calcium carbonate 25-40% by weight; Titanium dioxide 2-4% by weight; Iron oxide 0.1-1% by weight; And 0.1 ~ 4 wt% of multi-walled carbon nanotubes. delete The method of claim 1,
A paint composition for reducing noise between floors of a building, wherein the average particle diameter of the paint is 0.2 to 1 µm. The method of claim 1,
A paint composition for reducing interlayer noise of a building, further comprising an aqueous pigment. (1) An aqueous ethylene vinyl acetate (EVA) resin, ion-exchanged water, calcium carbonate, titanium dioxide, and iron oxide were added to a mixing stirrer, and each square milled product processed at 1500 ° C to 1600 ° C, and 1100 ° C to A first step of mixing a pulverized mixture consisting of a mineral pulverized product including a pulverized product of aluminum oxide, potassium oxide, magnesium oxide and calcium carbonate processed at 1200 ° C .; And
(2) A method for producing an interlayer noise reduction paint for a building comprising a second step of injecting multi-walled carbon nanotubes into the mixture of the first step. 6. The method of claim 5,
50 to 96% by weight of each corner milled at 1500 ° C to 1600 ° C, and 1 to 20% by weight of a milled product of aluminum oxide, potassium oxide, magnesium oxide and calcium carbonate processed at 1100 ° C to 1200 ° C, respectively. 0.1 to 20% by weight of a pulverized mixture consisting of a mineral pulverized; 20-30 wt% of an aqueous ethylene vinyl acetate (EVA) resin; 20-30% by weight of ion-exchanged water; Calcium carbonate 25-40% by weight; Titanium dioxide 2-4% by weight; Iron oxide 0.1-1% by weight; And 0.1 to 4% by weight of multi-walled carbon nanotubes. 6. The method of claim 5,
Method for producing a layer-based noise reduction paint of a building further comprising the step of injecting an aqueous pigment. The method of claim 5 wherein the grinding mixture is
1) washing process using distilled water,
2) wet grinding process using a ball mill,
3) drying process using electric drying furnace,
4) A method for producing an interlayer noise reduction paint of a building, which is obtained by a dry grinding process using Z-Mill or Nano-Mill.
delete