KR101302270B1 - An impact sound insulation material of floors and a floor execution method using the same - Google Patents

Abstract

The present invention relates to an interlayer sound insulating material, and more particularly, a main material having a sound insulating member and a heat insulating member formed on one or both surfaces of the sound insulating member; And a waterproof member formed on one or both surfaces of the main material, the waterproof member having a tear strength of 110 kg / cm ² to 190 kg / cm ² . The present invention reinforces a base material including a sound insulating member and a heat insulating member having excellent physical properties such as interlayer sound insulation, cushioning properties and mechanical strength with a waterproof member having an optimized tear strength, and at the same time having excellent interlayer sound insulation, heat insulating property and water resistance. Excellent resistance to tearing that may occur during construction or use, providing an interlayer sound insulation material that can be used reliably for a long time.

Interlayer sound insulation material, sound insulation member, heat insulation member, waterproof member, resin foam foam, open cell, polyurethane foam foam, foam polystyrene, polyethylene

Description

Interlayer sound insulation material and floor construction method using the same {An impact sound insulation material of floors and a floor execution method using the same}

The present invention relates to an interlayer sound insulation material having excellent interlayer sound insulation, heat insulation, waterproofness and durability, and a floor construction method using the same.

In multi-collected multi-story buildings such as multi-family homes, townhouse villas, buildings, apartments, schools, hospitals and dormitories, people live on the upper and lower floors. It causes great inconvenience to the lower class. The impact and noise as described above are also referred to as floor impact sounds, which means sounds and impacts generated by vibration of the slab due to falling, moving, or walking a person. The solid sound generated in such a case is transmitted to various positions with extremely low attenuation to vibrate the surface of the structure, and thus perceived as a directly reflected air transfer sound by lower people.

Recently, the floor noise caused by the floor impact sound is recognized as an important factor in determining the quality of the residential environment. In other words, while the consumer's desire for a pleasant living environment continues to increase, the material used for the floor structure of the multi-story building is getting thinner and lighter, and the internal noise source is increasing. As the problems caused by the floor impact sound are highlighted as a socially important issue, the sound insulation is developed to absorb and disperse the shock and noise applied to the lower floor or the side from the upper floor by being installed on the wall or the floor of the multi-story building. There is an active research on.

An object of the present invention is to provide an interlayer sound insulation material having excellent interlayer sound insulation, heat insulation, waterproofness and durability, and a floor construction method using the same.

The present invention provides a means for solving the above problems, a main member having a sound insulating member and a heat insulating member formed on one or both surfaces of the sound insulating member; And it is formed on one side or both sides of the main material, and provides an interlayer sound insulating material comprising a waterproof member having a tear strength of 110 kg / cm ² to 190 kg / cm ² .

The present invention also provides a floor construction method comprising the step of constructing the interlayer sound insulating material according to the present invention on a slab as another means for solving the above problems.

The present invention reinforces a base material including a sound insulating member and a heat insulating member having excellent physical properties such as interlayer sound insulation, cushioning properties and mechanical strength with a waterproof member having an optimized tear strength, and at the same time having excellent interlayer sound insulation, heat insulating property and water resistance. Excellent resistance to tearing that may occur during construction or use, providing an interlayer sound insulation material that can be used reliably for a long time.

The present invention, the main member having a sound insulating member and the heat insulating member formed on one side or both sides of the sound insulating member; And

It relates to an interlayer sound insulating material formed on one side or both sides of the main material, and includes a waterproof member having a tear strength of 110 kg / cm ² to 190 kg / cm ² .

Hereinafter, the interlayer sound insulation material according to the present invention will be described in more detail.

In the present invention, it is preferable to use an open cell-containing resin foam foam having an open cellization rate of 20% or more as the sound insulating member, but it is not particularly limited as long as it has excellent interlayer sound insulation, buffering property, mechanical strength, workability, and heat insulating property. The term "open cell" used in the present invention is a cell included in the foam, a concept that includes at least a part of all open cells (open), "open cell rate" is open in the total cell volume in the foam foam The percentage of volume occupied by a cell. 1 shows the structure of an open cell 15 according to one aspect of the invention. That is, the resin foam, in particular the flexible foam has a foam cell structure including an open cell and a closed cell (closed cell). The heavy sealed cell is a typical rigid foam structure, and has excellent thermal insulation properties due to the low thermal conductivity of carbon dioxide, pentane and CFC ₁₁ trapped inside the cell. On the other hand, the open cell is a soft foam structure, and at the last stage of foam formation, the wall of the cell is broken, and a web-like elastic structure is formed. In the present invention, the open cell ratio is more preferably 60% or more, and most preferably 80% or more. In the present invention, the upper limit of the open cellization rate is not particularly limited, for example, 90%. As the open foaming rate of the resin foam is increased, the sound insulation performance is further improved. If the open cell rate is less than 20%, the desired sound insulating effect may not be obtained. If the foam rate exceeds 90%, the foam hardness and / or There is a fear that the heat insulation is too low.

Although not particularly limited, the diameter of the open cell included in the foam of the present invention is preferably 0.05 mm to 2.0 mm. When the said diameter is smaller than 0.05 mm, there exists a possibility that impact sound insulation may fall, and when it exceeds 2.0 mm, there exists a possibility that hardness may fall too much.

It is also preferable that the resin foam of the present invention has a dynamic elastic modulus (dynamic elastic property of the object) specified in KS F 2868 in the range of 0.5 MN / m ³ or more and less than 10 MN / m ³ . In the present invention, it is more preferable that the value of the dynamic elastic modulus is 0.5 MN / m ³ to 7 MN / m ³ , and most preferably 0.5 MN / m ³ to 2 MN / m ³ . If the value of the dynamic modulus is less than 0.5 MN / m ³ , it is possible to effectively block the impact sound on the basis of the flexible resilience when dynamic load is applied, but the physical resistance to stress is lowered and the deformation according to the upper load at the floor finish surface If there is a risk of cracking, the stability of the sound insulating material is secured if it is 10 MN / m ³ or more, but there is a fear that the impact sound reduction effect is lowered.

It is preferable that the resin foam foam contained in the interlayer sound insulation material of this invention is 10 mm or more in thickness, 30 mm or more is more preferable, and 40 mm or more is the most preferable. If the thickness is smaller than 10 mm, there is a fear that the impact sound barrier property is inferior. In addition, the upper limit of the thickness of the said resin foam is not specifically limited, For example, it is 60 mm. When the thickness of the resin foam exceeds 60 mm, there exists a possibility that a construction restriction may follow.

The material of the resin foam foam that can be used in the present invention is not particularly limited, as long as it has the above-described physical properties, it is possible to use all of the foam foam of the general resin in this field. Examples of such resin foams include polyurethane foams, urea foams, polyvinyl chloride foams, polypropylene foams, polyethylene foams, polyvinylacetate foams, melamine resin foams, phenolic resin foams and the above. Any one or more kinds selected from the group consisting of foamed foam of any one derivative resin is laminated or bonded. Although not particularly limited, in the present invention, it is preferable to use a polyurethane foam in view of excellent elasticity as an elastomer, easy cell structure formation, and excellent mechanical properties and impact sound barrier properties compared to other materials. Do.

The method for producing the resin foam as described above is not particularly limited, it can be used without limitation the general method in this field according to each material. For example, the resin foam may be prepared by foaming a resin composition comprising an additive such as a base resin and a blowing agent through a mechanical method or a means such as ultraviolet irradiation. At this time, the foaming ratio is preferably 500% (five times) or more, but is not particularly limited and may be appropriately adjusted according to the physical properties such as the desired open cell ratio, dynamic modulus and hardness. Examples of blowing agents which may be used at this time include sulfonyl hydrazide such as p, p-oxybis (benzenesulfonyl hydrazide), benzenesulfonyl hydrazide or toluenesulfonyl hydrazide; Azo compounds such as azodicarbonamide (ADCA) or azobis isophtyronitrile; Organic blowing agents including nitroso compounds such as N, N-dinitrosopentamethylene tetramine or N, N-dimethyl-N, N-dinitrosoterephthalamide; Inorganic blowing agents containing sodium bicarbonate or ammonium bicarbonate can be used. In addition, examples of other additives that may be added to such a resin composition include water; Flame retardant; Pigments; dyes; Fillers; Dispersing agent; And one or more selected from the group consisting of surfactants.

In the present invention, a foamed foam is prepared using the foamable resin composition containing the above components. The foaming process is preferably performed in an inert gas atmosphere such as carbon dioxide, nitrogen, air, helium or neon, but is not limited thereto. At this time, those skilled in the art can easily control the physical properties, such as the cell structure, density or compressive strength of the foam by adjusting the content of the components in the foamable composition or the amount of charge into the mold.

The main material included in the interlayer sound insulating material of the present invention includes a heat insulating member formed on one or both surfaces of the sound insulating member described above. Thus, by combining the sound insulating member and the heat insulating member to form a main material, it is possible to provide an interlayer sound insulating material excellent in interlayer sound insulation and heat insulation. The kind of heat insulation member which can be used by this invention is not specifically limited, For example, polystyrene foam (EPS: Expanded Polystyrene) can be used. The heat insulating member preferably has a thickness of 10 mm to 15 mm. If the thickness is smaller than 10 mm, the effect of improving heat insulation performance may deteriorate. If the thickness exceeds 15 mm, the workability may deteriorate.

The interlayer sound insulation material of the present invention is formed on one side or both sides of the main material, characterized in that it comprises a waterproof member having a tear strength of 110 kg / cm ² to 190 kg / cm ² . 2 is a cross-sectional view of the interlayer sound insulation material according to an aspect of the present invention, and illustrates a state in which the waterproof member 30 is formed on both surfaces of the main material on which the heat insulation member 20 is formed on both surfaces of the sound insulation member 10. That is, in general, a large amount of water is used in the mortar layer formed on the upper part in the construction process of the interlayer sound insulation material, and thus, when water penetrates into the main material during the construction process or the use process after construction, or the moisture penetrates, There is a risk of deterioration in performance.

In the present invention, in order to solve the above problems, a waterproof member is formed on one or both surfaces of the main material, wherein the waterproof member has a tear strength of 110 kg / cm ² to 190 kg / cm ² . Tear strength is a numerical value representing resistance to tearing, and by using a waterproof member having a specific range of tear strength as described above, there is an effect of preventing tearing due to stress applied during construction and use of an interlayer sound insulation material. . If the tear strength of the waterproof member is less than 110 kg / cm ² , the waterproof member may be damaged by scratching or tearing due to stress applied during construction or use of the interlayer sound insulation material. In this case, the liquid (water) flows into the main material through the damaged part of the waterproof member, or moisture may enter the inside of the main material, thereby deteriorating the physical properties such as deterioration of the main material, deterioration of durability, sound insulation performance, and heat insulating performance. In addition, when the tear strength of the waterproof member exceeds 190 kg / cm ² , there is a risk that the shock-absorbing characteristics, sound insulation, and the like are deteriorated.

The waterproof member used in the present invention also has a water vapor transmission rate of 12 g / m ² defined by the amount of water vapor passed at a temperature of 40 ° C. (error: ± 1 ° C.) and a relative humidity of 90% (error: ± 2%). It is preferable that it is day or less. If the moisture permeability exceeds 12 g / m ² · day, there is a fear that the resistance to moisture is poor after construction.

The waterproof member which can be used in the present invention is not particularly limited as long as it has the above-described physical properties. For example, in the present invention, one or more selected from the group consisting of polyethylene sheet, polyethylene foam, non-foamed polyethylene sheet, and polyvinyl chloride foam can be used.

The waterproof member used in the present invention preferably has a thickness of 0.1 mm to 10 mm. If the thickness is less than 0.1 mm, the sound resistance of the sound insulating material may be lowered or the resistance to tearing may deteriorate. If the thickness is more than 10 mm, the workability and / or sound insulation may be lowered.

The above-described waterproof member may be formed in a state of being bonded or laminated to the main material, but more preferably, is formed in a sealed package of the main material. Bonding in the above refers to a state in which the components are bonded to each other by means of conventional adhesive means (e.g., solid adhesive, hot melt adhesive, heat, ultrasonic or double-sided adhesive tape, etc.) in this field, and all the faces that are in contact with each other are bonded. Or partially coupled. In addition, lamination means the state which overlaps with each other, without using a separate coupling means. Sealed packaging means a state in which the waterproof member is completely wrapped around the base material with or without an adhesive means.

The interlayer sound insulation material of the present invention may further include a functional layer such as a dimensionally stable layer or a reinforcing board layer in addition to the above-described waterproof member. At this time, the specific kind of the functional layer, the formation method, the laminated structure, and the like are not particularly limited, and a general method in this field can be appropriately employed.

The invention also relates to a floor construction method comprising the step of constructing an interlayer sound insulation material according to the invention on a slab.

In the floor construction method of the present invention,

It may further comprise the step of sequentially constructing the concrete layer, mortar layer or floor finish on the interlayer sound insulation material constructed.

That is, the interlayer sound insulation material according to the present invention is installed on the surface of the slab of the building structure, through which it can effectively block the impact sound or vibration, it can exhibit excellent thermal insulation performance.

The present invention may further comprise the step of placing and curing a concrete layer, preferably a lightweight foamed concrete layer, and then forming a mortar layer on the constructed interlayer sound insulation material, which typically comprises heating and / or Or a pipe for gas piping is installed. Interlayer sound insulation material, concrete layer and mortar layer are formed sequentially, and finally finish with flooring material. The concrete layer and the mortar layer to be installed on the top of the sound insulating material in the above includes a large amount of water, in addition to the water is used a lot in the construction process, or the process of the top layer in the sequential process is very concerned that the stress is applied to the sound insulation material high. However, in the case of the sound insulating material of the present invention, by forming a waterproof member having excellent moisture permeability and tear resistance on the upper or lower portion, it is possible to prevent the degradation of the physical properties of the base material due to moisture infiltration during construction or use, and also to tear the applied stress This is prevented and has the advantage that stable use over a long period of time without deterioration of physical properties. Method of the invention The specific construction method of each step is not particularly limited, the above can be easily carried out using the interlayer sound insulating material of the present invention and the general construction method in this field.

1 is a scanning electron micrograph (SEM) of a polyurethane foam, which is a resin foam according to one embodiment of the present invention.

2 is a cross-sectional view of an interlayer sound insulating material according to an aspect of the present invention.

≪ Description of reference numerals &

100: interlayer sound insulation

10: sound insulation

15: open cell

20: insulation member

30: waterproof member

Claims (12)

A base member having a sound insulating member which is an open cell-containing resin foam having an open cell ratio of 20% or more, and a heat insulating member formed on one or both surfaces of the sound insulating member; And a waterproof member formed on one or both surfaces of the main material and having a tear strength of 110 kg / cm ² to 190 kg / cm ² . delete The method of claim 1, The resin foam is an interlayer sound insulating material, characterized in that the dynamic modulus is 0.5 MN / m ³ or more, and less than 10 MN / m ³ . The method of claim 1, The resin foam is an interlayer sound insulating material, characterized in that the thickness is 10 mm or more. The method of claim 1, Polyurethane foam, polyurethane derivative resin foam, urea foam, urea derivative resin foam, polyvinyl chloride foam, polyvinyl chloride derivative resin foam, polypropylene foam, polypropylene derivative resin foam Foam, polyethylene foam, polyethylene derivative foam, polyvinylacetate foam, polyvinylacetate derivative resin foam, melamine resin foam, melamine derivative resin foam, phenol resin foam and derivative resin of phenol resin foam Interlayer sound insulation material, characterized in that at least one selected from the group consisting of foam. The method of claim 1, The insulating member is an interlayer sound insulating material, characterized in that the polystyrene foam. The method of claim 1, The insulating member has an interlayer sound insulating material, characterized in that the thickness of 10 mm to 15 mm. The method of claim 1, The waterproof member has a water vapor transmission rate of 12 g / m ² · day or less, interlayer sound insulation material. The method of claim 1, The waterproof member is at least one selected from the group consisting of polyethylene sheet, polyethylene foam, non-foamed polyethylene sheet and polyvinyl chloride foam. The interlayer sound insulation material according to claim 1, wherein the waterproof member has a thickness of 0.1 mm to 10 mm. The method of claim 1, The waterproof member is a sound insulating material interlayer sealing the main material. 12. A method of floor construction comprising the step of constructing an interlayer sound insulating material according to any one of claims 1 and 3 on a slab.

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