KR20050077221A - Impact sound insulating material based on glass fiber felt - Google Patents

Abstract

The present invention relates to a floor noise preventing material that can effectively reduce the noise between floors of a multi-family house composed of concrete or concrete steel frame, and introduces a layered structure into the structure of the floor noise preventing material to form an effective floating floor. As an interlayer noise prevention material of the form which lowers

(A) E-glass needle mats with a density of 60-300kg / m3 are used in one or more layers, but the total thickness is 5-30mm.

(B) Using a layered structure having a thickness of 3-6 mm in one or more layers, the layered structured layer having a total thickness of 3-18 mm;

(C) It is composed of an organic polymer foam layer having a thickness of 12 mm or less.

Description

Noise sound insulating material based on glass fiber felt}

The present invention relates to a floor shock sound prevention material having excellent shock noise blocking performance and low thermal conductivity in order to prevent noise between floors and improve thermal insulation of apartment houses, and in detail, having a density of 60-300kg / ㎥ and a total thickness of 5-30mm. -An interlayer noise preventing material comprising a glass needle mat, a layered structure having a thickness of 3-6 mm and a total use thickness of 3-18 mm, and an organic polymer foam layer having a total use thickness of 12 mm or less.

Recently, as the standard of living improves, consumers tend to be used for the purpose of more comfortable rest and cultural life as well as indoor leisure in homes, and the demand for blocking noise or vibration from neighboring households or outside is increasing. In addition, homeowners are working to create a more comfortable living environment to meet these demands and eliminate potential complaints. The government has also revised the KS regulations for floor impact sound to meet these trends and at least achieve them in the construction of multi-family homes. The reduction of floor noise in apartments has already become an important issue in our society.

In addition, in the interlayer noise prevention material industry, various materials have been developed and released.In the early stages, waste tire powder was mixed with adhesive components such as acrylic, urethane, and acrylic to be poured onto the slab and pressed. It is difficult to expect improvement of sound insulation and insulation because light weight concrete placed on top of this buffer material is very easy to penetrate.To improve this, the soundproof plate using waste tire chip is used in Korean Registration No. 20-0252799. The Korean Patent Publication No. 2003-0013495 proposes a sound absorbing material using waste tire chips and cork powder. However, neither of these techniques fundamentally improves sound insulation and thermal insulation deterioration of waste tire chips. The product is heavy and the construction is inconvenient.

Korean Registered Room No. 20-0328912 and Korean Registered Room No. 20-0329741 attempt to improve sound insulation by absorbing, reflecting, and offsetting incident noise by forming protrusions on the surface of the polymer foam material. Since it is transmitted in the form of vibration, it is difficult to expect satisfactory performance through the absorption, reflection, and offset effects expected in the cited invention. In Korea Patent No. 20-0287084, a method using a pulverized synthetic resin such as ethylene vinyl acetate is used. However, this also has problems of the same tendency and high thermal conductivity of the waste tire chip.

In addition, a sound insulation sheet filled with an inorganic material having a high specific gravity in a resin component mainly containing ethylene vinyl acetate is also proposed as an interlayer noise prevention material. In this case, there is a problem of low light impact sound improvement effect due to high stiffness.

In addition, the Republic of Korea Registered Room No. 99-00153469 proposes an interlayer noise preventing material that is treated with ascon and waterproof film on the surface of the glass fiber felt in which the aluminum foil is inserted in the middle, but the glass fiber felt is simply Because of the high specific gravity aluminum with excellent sound insulation, it does not show excellent performance for the floor floor noise, which is the main factor of vibration.To solve this problem, Korean Patent Registration No. 20-0318719 uses two glass fiber felts. It proposes the interlayer noise prevention material which is bonded with ascon and both surfaces are treated with ascon and waterproof film. In this way, the composite layer structure is intended to block the vibration transmission path. As a result, the sound insulation performance was further lowered.

The present invention focuses on the fact that most of the floor noise preventing material is based on the grounded floor structure, and the structure that can form the flooring floor structure can be reliably introduced into the floor noise preventing material structure to minimize noise and heat transfer to minimize sound insulation and The purpose is to construct a noise preventing material between floors of apartments with excellent insulation.

The present invention relates to an interlayer noise preventing material which is constructed between a slab and lightweight concrete in the construction of a common multi-family house composed of concrete and concrete steel structures. The interlayer noise preventing material of the present invention has a theoretical floating floor in its own structure. The most realistic alternative to the structure is a layered structure having a thickness of 3-18 mm, which is characterized by better sound insulation and insulation.

When explaining the interlayer noise prevention material of the present invention in detail.

The interlayer noise prevention material of the present invention relates to an interlayer noise prevention material based on an E-glass needle mat having a density of 60-300 kg / m 3, a layered structure, and an organic polymer foam.

(A) E-glass needle mats with a density of 60-300kg / m3 are used in one or more layers, but the total thickness is 5-30mm.

(B) Using a layered structure having a thickness of 3-6 mm in one or more layers, the layered structured layer having a total thickness of 3-18 mm;

(C) It is composed of an organic polymer foam layer having a thickness of 12 mm or less, and additionally, various nonwoven fabrics or films for surface treatment can be used.

In more detail, the E-glass needle mat may be arranged in one or more layers within a total thickness range of 5-30 mm, and may satisfy the thickness range limited in the present invention within the structure of the final interlayer noise preventing material. In addition, one to more than one layer can be used in a layered structure having a thickness of 3-6mm, and the organic polymer foam is used in the range of 12mm or less. Considering this, most are used only in the thickness range of 10-35mm.

E-glass needle mat (A) used in the present invention is appropriately cut the E-glass long fiber to a length of 50-200mm that can be applied to the carding process and then form a thin and uniform glass fiber thin film by the carding process and this thin film Is a process of forming a felt structure by forming physical entanglement structure between glass fibers by needle punching process in consideration of the desired thickness and density, and manufacturing method and characteristics of glass fiber. It is well represented in 0153469 and Republic of Korea Registration No. 20-0302693. These needle mats have a density of 60-300kg / m3 and a thickness of 5-30mm as the total thickness in the final interlayer noise suppression structure.If the density of the needle mats is less than 60kg / m 3, the sound insulation and insulation are only degraded. In addition, there is a possibility that there may be a problem in securing the stability of the floor during construction.If the density of the needle mat is more than 300kg / ㎥, the weight of the final interlayer noise prevention material is high, which makes the construction very difficult, There is a problem that the sound insulation effect and the heat insulation of the floor impact sound is reduced by reducing the energy transmission loss improvement effect. And the total thickness of the needle mat is good 5-30mm. If the thickness of the needle mat is less than 5mm, it is difficult to expect the sound insulation and insulation of the needle mat basically, and when the thickness of the needle mat is more than 30mm, the layered structure Even if only one layer is introduced, the thickness of the final interlayer noise suppressor exceeds 30mm, which makes it difficult to use in the current interlayer noise prevention market.

The layered structure (B) used in the present invention is a layered structure that can be used in the present invention is a method of introducing an air layer to minimize the elastic connection of the upper and lower layers, an air bubble composed of an olefin resin used as a packaging material ( Air Bubble) structure, the air layer is constrained to the pressure level of atmospheric pressure between the resin film, one air layer thickness is 3-6mm, diameter is 8-12mm, bubble wall thickness is 50㎛ or less The spacing between bubbles is about 1-10mm, and the air bubble is densely formed. If the air layer thickness of one bubble is less than 3mm, the effect of layer separation is slightly reduced, but the noise blocking effect is insignificant.If it is thicker than 6mm, there is no big problem in performance, but two layers of thin layer than thick one layer separation structure Using is the method to maximize the effect of the layered structure.

In addition, since the air bubble, which is a layered structure of the present invention, is very light, it may be considered that there is no visual strength. To confirm this, when a plate having a diameter of 100 mm is placed on the layered structure, a load of 10 ton / m 2 is applied. It was confirmed that the air bubble is not destroyed until the load.In consideration of lightweight concrete and finishing mortar which is usually installed on the interlayer noise preventing material, even if the load is about 100kg / ㎡, the human walks from the upper part or the air in the post-construction There is little chance of a bubble breaking.

The organic polymer foam (C) of the present invention includes polyethylene foam, polypropylene foam, polystyrene foam, polyurethane foam, ethylene vinyl acetate foam, soft polyvinyl chloride alone or a foam mixed with other components, a thermoplastic elastomer foam, Synthetic rubber foam and the like can be used, the thickness of the organic foam is preferably 12mm or less. If the thickness of the organic foam exceeds 12mm, even though only one layer of the layered structure is used, the thickness of the needle mat needs to be thin, causing a problem of reducing the thickness of the needle mat.

In addition, in the case of the interlayer noise prevention material based on the needle mat, it is basically waterproofed. Polyethylene, polypropylene, and polyester film may be adhered to the surface where the glass fiber is exposed by using an adhesive or ascone. It is also possible to bond various nonwoven fabrics.

Among the organic polymer foams, polyethylene foam is a material produced by extrusion foaming method using a conventional chemical foaming agent, and a crosslinking type having a crosslinked structure or a crosslinked structure having no crosslinked structure by mixing and processing a crosslinking agent such as dicumyl peroxide. Although any of these may be used, it is preferable to use a crosslinking type in view of thermal contraction. Polypropylene foam and polystyrene foam are both foamed by the bead method or foamed by the extrusion method, and ethylene vinyl acetate foam is usually a good mixture of ethylene vinyl acetate resin, crosslinking agent and foaming agent having a vinyl acetate content of less than 30%. Sheets are usually molded by discontinuous multi-stage foaming processes, which may be mixed with rubber, polyvinyl chloride, polyethylene, or blendable polymer scraps to improve performance or change properties. Polyvinyl chloride is a material which is foamed continuously or discontinuously by mixing a blowing agent with a soft component containing an appropriate amount of plasticizer for elasticity and flexibility.

The thermoplastic elastomer foam is a material obtained by foaming a styrene-butadiene block copolymer, an ethylene-propylene rubber, an ethylene-propylene diene monomer, a thermoplastic urethane elastic material, a thermoplastic ether ester elastic material, or a thermoplastic amide ether elastic material. Is a thermoplastic elastic material comprising urethane, ester, and amide which classify the type of elastic material as hard segments, and ester diol or polyetherdiol as soft segments.

Synthetic rubber foam refers to a material in which ordinary synthetic rubbers such as butyl rubber, chloroprene and isoprene are foamed.

Blowing agents which can be used when processing these various foams include azodicarbonamide, dinitrosopentamethylenetetramine, sulfonylhydrazide, sodium bicarbonate, p-toluenesulfonyl semicarbazide, 5-phenyltetrazole, Chemical blowing agents such as diisopropylhydrazodicarboxylate, 5-phenyl-3,6-dihydro-1,3,4-oxadiazin-2-one, sodium borohydride, n-pentane, 2 Physical blowing agents such as -methylbutane, n-nucleic acid, cyclopentane, 3-methylpentane, 1-hexene, cyclohexane, n-heptane, dimethylpentane, benzene, toluene, dichloromethane and the like can be used alone or in combination.

The structure of the interlayer noise preventing material proposed in the present invention is composed of (A) needle mat 5-30mm, (B) layer separation structure layer 3-18mm, (C) organic polymer foam 12mm or less, If the characteristics are satisfactory, the separate layers can be used in the total thickness range because there are manufacturing problems but no performance problems.

The construction of the interlayer noise prevention material of the present invention is placed on the floor without any gaps on the flat slab surface where the slab frame construction is completed, and the boundary surface of each plate is waterproof so that water contained in the construction of lightweight concrete does not penetrate into the lower portion of the interlayer noise prevention material. The construction can be done simply by taping with a plastic tape. If it is possible to completely separate the interlayer noise prevention material and the slab, it is better to use the wall isolation material up to the height of the finishing mortar in the wall part. You may use the material which comprises a noise prevention material main body, or the interlayer noise prevention material of this invention as it is.

The floor floor noise of an MDU of concrete or steel concrete structure is classified into two types: low-impact and heavy-impact impacts on heavy objects and light-impact impacts on hard and relatively light objects. Judging by two categories, heavy impact sound refers to noise generated when children run around. When a shock is applied by heavy weight, the impact force is the noise generated by vibrating building structures such as floors and walls. The reduction of the heavy impact sound has the characteristics that can be improved by increasing the thickness of the structure of the building or by increasing the strength, and it is not a physical property that can be improved by the small characteristic change of the structure of the upper part of the slab. Is almost impossible. However, in the case of lightweight impact sound, solid light transmission occurs when a relatively light and hard object collides with a hard floor. The higher the elastic modulus of the floor structure is, the easier it is to transmit. It is not a property that can be improved. In the early stages of research on interlayer noise suppression materials, this fact was known only in academic circles.In the industry, the anti-interference noise prevention material is expected to be improved at the same time by using the interlayer noise prevention material. Now, the results of the research and research have been carried out to improve the light impact sound as an interlayer noise prevention material, and the weight impact sound to increase the thickness and strength of the building structure, and the lower the dynamic modulus, the lower the light impact sound that can be expected from the interlayer noise prevention material. It is true that the principle of maximizing effectiveness is becoming more or less general.

In this context, the interlayer noise prevention material should select materials with relatively low thermal conductivity as the material which can most effectively improve the light impact sound.The thermal conductivity is about 20mm to achieve the thermal permeability of 0.7kcal / ㎡hr ℃ below the entire floor. The required level of interlayer noise prevention material can be easily achieved if it is less than 0.037kcal / mhr ℃, and the improvement of lightweight impact sound blocks the vibration path of solid transfer sound by constructing the floating floor between the upper and lower layers. It is most effective, and theoretically, if a vacuum layer can be formed between the upper and lower layers, it is possible to construct a structure that produces the least noise transmission. It was introduced.

The interlayer noise prevention material of the present invention is a layer separation that can maximize the floating floor effect in order to further improve the method of forming the floating floor structure by constructing a foam material having a relatively low specific gravity compared to the concrete between the slab and lightweight concrete. Since the structure is used, it is possible to obtain the noise blocking performance superior to the noise blocking effect of the interlayer noise preventive materials up to now, and it is possible to dramatically lower the dynamic elastic modulus by the introduction of the layered structure. You can get it.

(Example)

Example 1) to Example 14) and Comparative Example 1) to Comparative Example 8) All the examples of the interlayer noise prevention material was prepared according to the configuration shown in Table 1) below, the right side of the configuration is interlayer noise prevention It means the upper portion of the ash, the left is in order in the lower meaning, in the case of the surface finish represented by 'S' was used as the adhesive method using ascon, all other layers were bonded using an acrylic adhesive. The interlayer noise prevention material thus prepared was subjected to the thickness, the interlayer noise prevention performance, the thermal conductivity, and the dynamic elastic modulus in the same manner as in Table-2), and the results are shown in Table-2).

number Configuration Remarks Example 1 (S) / (G140-15) / (A1) / (S) Example 2 (S) / (G140-10) / (A1) / (A1) Example 3 (S) / (G140-6) / (A1) / (A1) / (A1) Example 4 (S) / (G140-5) / (A1) / (G140-5) / (A1) / (P30-5) Example 5 (S) / (G140-5) / (A1) / (G140-5) / (P30-5) Example 6 (S) / (G140-15) / (A1) / (P25-5) Example 7 (S) / (G140-8) / (A1) / (A1) / (P25-5) Example 8 (P30-5) / (G140-7) / (A1) / (P25-5) Example 9 (S) / (G140-15) / (A1) / (V62-5) Example 10 (V70-5) / (G140-7) / (A1) / (P25-5) Example 11 (S) / (G250-8) / (A1) / (A1) / (P25-5) Example 12 (S) / (G70-8) / (A1) / (A1) / (P25-5) Example 13 (S) / (G140-15) / (A1) / (R75-5) Example 14 (S) / (G180-20) / (A1) / (T57-5) Comparative Example 1 (S) / (G18-20) / (S) No layer separation structure Comparative Example 2 (S) / (G140-3) / (A1) / (A1) / (A1) / (P30-5) Needle mat thickness is too small Comparative Example 3 (S) / (G140-17) / (A1) / (G140-17) / (S) Needle Mat Thickness Excess Comparative Example 4 (S) / (G320-8) / (A1) / (A1) / (P25-5) Needle Mat Density Excess Comparative Example 5 (S) / (G50-8) / (A1) / (A1) / (P25-5) Needle Mat Density Underestimated Comparative Example 6 (S) / (G140-15) / (A2) Depth of Layer Separation Structure Comparative Example 7 (S) / (G140-3) / (A3) / (A3) / (A3) Excessive layer thickness Comparative Example 8 (S) / (G140-3) / (A1) / (V70-15) Excessive organic foam thickness Comparative Example 9 (S) / (G140-15) / (A1) / (A1) / (V70-15) Excessive organic foam thickness

How to read the interlayer noise prevention material

G means the E-glass needle mat, and the three digits after the G indicate the needle mat density in kg / m 3, and the number after the “-” indicates the thickness of the needle mat in mm.

A: A mark indicating a layered structure, A1 indicates a thickness of 4.7mm, A2 indicates a layered structure with a thickness of 2.5mm, and A3 indicates a layered structure with a thickness of 10mm.

P means polyethylene foam, and the second two units indicate the density of the foam in kg / m 3, and the number after the “-” indicates the thickness of the foam in mm.

V means ethylene vinyl acetate foam, and the second two units represent the density of the foam in kg / m 3, and the number after the “-” represents the thickness of the foam in mm.

R: refers to the component of general rubber foam, which is a mixture of butyl rubber and polyvinyl chloride, and the second two units represent the density of this foam in kg / m 3, and the number after "-" indicates the thickness of this foam in mm It is expressed in units.

T: It is a foam of thermoplastic styrene-based elastic material which is the product name of 'Crayton' of Shell, and the number 2 unit after shows the density of this foam in kg / m <3>, and the number after "-" indicates the thickness of this foam in mm. It is expressed in units.

S: means that a polyethylene film having a thickness of 50 µm is bonded using ascone to waterproof the exposed surface of the needle mat.

number Total thickness Noise performance Thermal conductivity Dynamic modulus Remarks Example 1 20 54.2 0.034 13.7 Example 2 20 53.6 0.033 12.6 Example 3 21 53.7 0.034 7.6 Example 4 25 52.4 0.033 9.6 Example 5 21 53.4 0.032 10.6 Example 6 25 53.2 0.034 11.4 Example 7 23 53.7 0.035 8.6 Example 8 22 54.3 0.035 10.7 Example 9 25 52.7 0.034 12.3 Example 10 22 53.2 0.034 14.2 Example 11 23 54.4 0.035 12.4 Example 12 23 55.2 0.036 11.2 Example 13 25 52.6 0.034 12.7 Example 14 30 51.4 0.034 13.6 Comparative Example 1 20 58.4 0.035 48.7 Sound insulation Comparative Example 2 23 56.9 0.042 12.1 Poor insulation Comparative Example 3 39 60.5 0.032 36.2 Poor sound insulation Comparative Example 4 23 61.2 0.041 16.7 Sound insulation, poor insulation Comparative Example 5 23 59.7 0.040 19.4 Sound insulation, poor insulation Comparative Example 6 18 57.5 0.034 21.6 Sound insulation Comparative Example 7 33 56.2 0.039 19.6 Insulation deterioration Comparative Example 8 23 60.5 0.041 17.4 Sound insulation, poor insulation Comparative Example 9 40 54.8 0.044 14.6 Poor insulation

Total thickness: Actual thickness of interlayer noise preventing material manufactured by the method of Table 1. Unit is mm.

Noise performance: The sound insulation performance of light impact sound was measured according to KS F 2810-1, which is a measurement and evaluation standard, and evaluated according to KS F 2863-1, except that the inverse A reference curve was measured in units of 0.1 dB to compare the noise performance. The sound insulation performance level was compared by reading the level where the sum of excess values compared to the reference curve did not exceed 10.0dB.

Thermal conductivity: measured by the plate heat flow method at 20 ℃ according to KS L 9016, the unit should be multiplied by 0.86 in W / mK to convert to kcal / mhr ℃ mentioned in the text of the present invention.

Dynamic modulus of elasticity: measured by pulse vibration method of KS F 2868. Unit is MN / ㎥

Claims (1)

Interlayer noise prevention material having a thickness of 10-35mm based on the following components (A) (B) and (C) of apartments for concrete or concrete steel frame (A) E-glass needle mats with a density of 60-300kg / m3 are used in one or more layers, but the total thickness is 5-30mm. (B) Using a layered structure having a thickness of 3-6 mm in one or more layers, the layered structured layer having a total thickness of 3-18 mm; (C) organic polymer foam layer less than 12mm thick