KR200179088Y1 - Sheet material for damping noise and vibration - Google Patents

Abstract

The present invention relates to a noise and vibration reducing material that further enhances the effects of noise and vibration blocking by using waste rubber and waste tires. A paper board is immersed in an impregnation solution of asphalt, SBS resin, and inorganic filler. 1) and the lower layer (2), and the intermediate layer (3) embedded between the upper layer (1) and the lower layer (2) and formed by pressure molding of a mixture of powdered tires, waste rubber, charcoal and polyurethane-based adhesives (3) It is composed of three layers of), which makes the space between particles denser by mixing fibrous pieces and powders of waste tires and waste rubber, and charcoal particles to enhance noise reduction effect, and at the same time, it is firm and gives excellent shape stability. As there is no oxidation of adhesive, it can maintain adhesion for a long time. It is beneficial to human body by generating negative ion and harmful electromagnetic wave and water wave caused by the action of charcoal. It can also be used as a building material because it has a special effect of suppressing oxidation corrosion of rebar.

Description

Sheet material for damping noise and vibration}

The present invention relates to a noise and vibration reducing material, and more specifically, to a noise and vibration reducing material using waste rubber and tires to further enhance the effect of noise and vibration blocking.

In general, it is known to increase the mass, increase the stiffness, and to avoid resonance and damp the vibration in order to prevent the vibration and noise generated around us, especially the system attenuation, structural Damping and material damping are being applied.

All of them convert the vibration energy of the vibrating body into heat and consume it, and the vibration is rapidly reduced to stop the vibration.

So we try to block noise and vibration by using these methods. In the field of building materials, rolls and panels are formed by forming air layers in the form of a plate of constant thickness using the structural damping and material damping. It has been applied to buildings such as schools, hospitals, hotels, sports facilities, residential complexes, and apartments.

The thicker the plate, the lower the noise, but the pressure is applied by the weight of concrete, finish mortar, boiler pipe, etc., which is additionally constructed on it. It is used by making the thickness about 10 ~ 20mm at the construction surface. However, in the known manner, in the case of the thickness, the effect of reducing noise and vibration was insignificant compared to the manufacturing cost.

So, while the inventors have been conducting long-term researches in this field for blocking noise and vibration of buildings, we use waste tires and waste rubbers, which have been considered as a major cause of environmental pollution as waste around us. It was found that the performance was excellent when manufacturing noise and vibration lowering materials. In addition, the addition of charcoal doubles the sound insulation effect and gives anion effect to the human body to enhance human health. The new noise and vibration reducing material was found in the patent application No. 99-15292.

Charcoal has its own cell structure with irregular structure of several microns to several hundred microns, and when mixed with waste tires and waste rubber particles, it is located in the pores by these particles, which enhances the noise reduction effect and prevents the oxidation of the adhesive to improve adhesion. It has been found to be able to maintain it for a long time, to reduce the effects of harmful electromagnetic waves and water waves, and to inhibit oxidative corrosion of cement and rebar.

Due to these unique characteristics, the noise and vibration reducing material of the patent application has received great response as a great building material.

However, in the case of the above application, when used as a building material, there was no deterioration as a flooring material, but when the wall material was used, the density and strength were weak, so it was difficult to apply.

Therefore, the present inventors have developed the present invention, which has been continuously promoting research and development to supplement the problems of the patent application and further increase the performance of lowering noise and vibration.

In other words, by changing the material of the base sheet in the prior application, also commonly referred to as the cardboard board, and improve the shape and bonding state of the waste tires and waste rubber particles, by densely adjusting the density to prevent the sound transmission system more effectively The floor and impact resonance sound can be prevented, so it is convenient to work when it is manufactured and supplied in roll and panel form, and it can shorten the construction period and maximize the noise and vibration reduction effect to make the living space more comfortable. The company has developed an improved noise and vibration reduction material.

1 is a perspective view illustrating the overall form of the noise and vibration reducing material according to the present invention.

Figure 2 is a cross-sectional view of the noise and vibration reducing material according to the present invention constructed in the building as a wall and floor materials.

Figure 3 is a graph showing the test results of the sound insulation performance in the weight and light weight of the noise and vibration reducing material according to the present invention.

Figure 4 is a graph showing the test results of the reverberation chamber transmission loss of the noise and vibration reducing material according to the present invention.

※ Explanation of symbols for main parts of drawing

A: Noise and vibration reduction sheet 1: Upper layer

2: middle layer 3: lower layer

3a: Fibrous pieces of used tires and used rubber

3b: waste tire and waste rubber powder

3c: charcoal particles 10: finishing materials

20: concrete flooring

According to the present invention, in the noise and vibration reduction material using the waste tire and waste rubber, the waste tire and waste rubber and a mixture of charcoal particles and adhesive are pressurized at a high temperature on a thick paper board,

The board of paper material is impregnated with a mixture of asphalt, SBS resin and inorganic filler to form an upper layer and a lower layer;

It is inherent between the upper layer and the lower layer, and provides a noise and vibration reducing material comprising an intermediate layer formed by pressure molding of a mixture of powdered waste tires, waste rubber, charcoal and polyurethane-based adhesive.

In addition, the present invention is characterized in that the waste tire and the waste rubber forming the intermediate layer is formed in a state in which the flakes and powder in the form of fibers are mixed at an appropriate ratio.

The waste tire and the waste rubber applied to the middle layer of the present invention are preferably mixed and used in an appropriate amount in terms of hardness and flexibility, and the waste tire can be applied to all kinds of waste tires regardless of the type of vehicle. As the natural rubber and synthetic rubber is used, butadiene styrene rubber (SBR), butadiene acrylonitrile rubber (NBR), polychloroprene rubber (GR-M), polyisoprene rubber (IR), poly iso Any kind of butylene, isobutylene isoprene rubber (IIR), polyurethane rubber, fluorine rubber, silicone rubber and the like can be recycled.

The board of the paper material forming the upper layer and the lower layer only needs to have a little thickness and is not particularly limited by the material. The impregnation solution is a mixture of inorganic fillers such as styrene-butadiene rubber solution (SBS) resin and talc (mica), mica and clay for increase in conventional asphalt.

The inorganic filler may be added to the impregnation liquid in any one or two or more thereof.

Therefore, the impregnating liquid is mixed with the SBS resin of the styrene-butadiene rubber in the form of the solution and the inorganic filler in the ordinary asphalt to increase the weight of the board of the paper material and increase the weight to improve sound insulation.

In addition, the noise and vibration reducing material of the present invention is bonded to the intermediate layer by using a polyurethane-based adhesive on the inner surface of the upper layer and the lower layer it is possible to prevent the deterioration and deformation of the adhesive when using the conventional aqueous latex.

Hereinafter, with reference to Figures 1 and 2 attached to more easily understand the characteristics of the noise and vibration reducing material according to the present invention.

1 and 2 are shown in the form of a sheet (sheet) as an example of the noise and vibration reducing material according to the present invention.

Noise and vibration reducing material (A) according to the present invention is embedded in between the upper layer (1) and lower layer (2) of the same material formed by impregnating the mixture of asphalt, SBS resin and inorganic filler as shown in FIG. It is formed of three layers of the intermediate layer (3).

Referring to FIG. 1, the waste tire and the waste rubber are mixed with the char particles 3c in the form of slightly longer lengths of fibrous pieces 3a and small powders 3b to form a dense intermediate layer 3.

That is, the upper layer (1) and the lower layer (2) of the noise and vibration reducing material (A) according to the present invention is first immersed in the impregnation solution containing the SBS resin and inorganic filler thereon the board mainly made of asphalt It is then dried to form.

The SBS resin constituting the impregnation solution is added to the asphalt at a weight ratio of approximately 1/10 to 3/10, and a trace amount of inorganic filler is added.

And the intermediate | middle layer 3 is formed by adding charcoal particle 3c to the waste tire, the fibrous piece 3a of waste rubber, and the powder 3b within 5 to 10% of these weights.

When the content of the charcoal particles is less than the lower limit, the noise reduction performance is lowered, and when the content of the charcoal particles is higher than the upper limit, the composition of the noise and vibration reducing material of the present invention is not firm and the vibration prevention performance is low.

That is, the intermediate layer 3 is first mixed with a charcoal particles (3c) to the polyurethane-based resin, and then mixed well, and then added well to the waste tires and waste rubber fibrous pieces (3a) and powder (3b) and put into a molding machine 150 ℃ It is formed by pressing for 10 minutes at a high temperature of the degree, and is taken out from the molding machine, and then finished by removing the residues of the surrounding burrs and the like and drying them at room temperature.

At this time, the polyurethane-based resin is most preferable because it can bond the materials with the most excellent adhesion and most robust when used in an amount of about 1/10 of the weight of the waste tire and the waste rubber.

Therefore, the upper and lower parts of the intermediate layer 3 formed in the above manner, the upper layer (1) and the lower layer (2) treated with the impregnation liquid coated with a polyurethane resin on the inner surface is placed by pressing and drying while pressing Noise and vibration lowering material is formed.

The noise and vibration lowering material (A) of the present invention in the form of a plate formed as described above is constructed to be embedded between the concrete flooring material 20 and the finishing material 10 as a wall material and flooring material.

In order to compare the performance of the noise and vibration reducing material according to the present invention with the existing noise and vibration reducing material for reference as shown in FIG. 2, the test was conducted under the same conditions by requesting a disaster prevention test institute, respectively, in FIGS. 3 and 4. The same result was shown.

That is, as shown in FIG. 3, when the frequency is low, there is no difference in light weight and heavy impact sound, but the higher the frequency, the lower the impact sound level than the control in the case of the noise and vibration lowering material of the present invention.

4 is a graph showing the reverberation chamber transmission loss, and as the frequency increases, the sound transmission loss of the noise and vibration lowering material of the present invention increases as the frequency increases, so that the sound insulation performance is excellent.

As described above, the noise and vibration reducing material according to the present invention is breathable, but has a higher density than the existing one, and thus has excellent sound absorption, and has excellent sound insulation effect and flexibility, so that it is easy to be installed without damage during storage and transportation.

In addition, since the shape can be maintained without deformation or deterioration, since it does not cause cracking or deformation of the building material located on the upper part of the finished mortar or the like after construction, the semi-permanent effect can be exhibited.

That is, the noise and vibration reducing material of the present invention increase the density of the space by appropriate mixing of waste tires and waste rubber with charcoal, so that the sound insulation effect is further enhanced because it does not have a resonance phenomenon, and it also gives a robustness suitable for use as a wall material. In addition, the board made of paper is prevented from penetrating the foam concrete at the top by the upper layer and the lower layer treated with the impregnation solution of the mixture of SBS resin solution and talc and other inorganic fillers in addition to the asphalt, and the soundproof effect is provided. This further enhances the level of noise and vibration around us, to a near perfect level.

In addition, the effect of charcoal gives anion and air cleaning effect indoors throughout the year, greatly contribute to the health of the human body.

As described above, the present invention contributes to material conservation as well as environmental pollution prevention by recycling waste tires and waste rubbers in place.

Noise and vibration reducing material according to the present invention is usually used alone, but in some cases may be attached to the existing sound insulation plywood or gypsum board for high sound insulation.

Claims (2)

In the noise and vibration reduction material using the waste tire and waste rubber, which is made of a thick paper board and waste tire, waste rubber, and a mixture of charcoal particles and adhesive at high temperature, The paperboard is impregnated with a mixture of asphalt, SBS resin and inorganic filler to form an upper layer (1) and a lower layer (2); Noise and vibration reduction, which is inherent between the upper layer (1) and the lower layer (2), consists of an intermediate layer (3) formed by press molding of a mixture of powdered waste tires, waste rubber, charcoal and polyurethane-based adhesives. ashes. The noise and vibration reducing material according to claim 1, wherein the waste tire and the waste rubber of the intermediate layer (3) are formed in a state in which fibrous pieces (3a) and powder (3b) forms are mixed.