KR100198860B1 - Restricted vibration-damping material - Google Patents

Abstract

The damping material absorbs and blocks various vibrations and noises, and there is a product having 8 layers of restrained layers, which the inventors have filed on May 4, 1996, but a layer separation phenomenon occurred and the productivity was not good.

The application of May 4, 96, the inventors of the present invention provides a sound absorbing and insulating sheet in which a metal foil and a sound absorbing layer are integrated with a polymer adhesive, a vibration and noise scattering layer coated with a polymer adhesive on a high strength porous fiber layer, a vibration damping composition layer and a polymer film. Constrained flexible high-performance composite vibration damper, which is laminated with the laminated vibration damping layer in sequence, has eight layers of restraint layer, so it has superior vibration and noise damping ability than any vibration damper, but layer separation occurs or manufacturing cost increases. Due to the low workability, the superiority of the performance was recognized, but there was a problem in generalization. Therefore, the present invention has been made to produce an advanced vibration damper that has substantially the same performance but significantly improved workability and economical efficiency despite the simplification of the three-layer structure, which is a complex of eight layers while maintaining the basic configuration of the previous application. .

In the present invention, the sound insulation layer (1) and the vibration damping sheet layer (3) are laminated on the vibration and noise scattering layer (2) above and below, and the restraint layer is simplified to three layers, and the use is more focused on the sound insulation side. In the case of two, the double sound insulation layer is used as shown in FIG. 3, and when the emphasis is placed on vibration attenuation, a double damping sheet layer is formed as shown in FIG. 4 to further increase the vibration damping performance. The sound insulation layer 1 and the vibration damping sheet layer 3 were stacked on the upper and lower sides so that the functions were almost the same. As a result, productivity was dramatically improved and workability in the field was also enhanced.

Description

Constrained Composite Vibration Damper

The present invention relates to a high performance composite vibration damper having a constrained and flexible structure with improved economics and workability.

Vibration damping materials are used as vibration damping materials for ceilings, sidewalls and floors of various means of transportation such as automobiles, railway vehicles, aircrafts and ships.In addition to the noise sources in the sidewalls of elevators and machine rooms or industrial machinery, It is used in various high-tech fields such as vacuum cleaners, washing machines, microwave ovens, etc. to absorb and block vibration and noise.

Patent application No. 96-14588 dated May 4, 96 of the present inventors is a sound absorbing and insulating sheet in which a metal foil and a sound-absorbing layer is integrated with a polymer adhesive, and a vibration and noise scattering layer coated with a polymer adhesive on a high-strength porous fiber layer And a filing-type, flexible, high-performance composite vibration damping material in which a vibration damping layer in which a vibration damping composition layer and a polymer film are laminated are sequentially laminated. The restraint layer is compounded into eight layers, which provides superior vibration and Although it possesses noise attenuation ability, separation between layers occurs, manufacturing cost increases, and workability is low, so there is a problem in generalization even though the performance is excellent.

Therefore, the present invention aims to provide an advanced vibration damping material which has the same performance as the conventional vibration damping material while simplifying the structure of the prior application, and locally improved workability and economic efficiency.

1 is a cross-sectional configuration of the vibration damper of the present invention.

2 is a cross-sectional view showing another embodiment of the present invention.

3 is a cross-sectional view showing yet another embodiment of the present invention.

Figure 4 is a cross-sectional view showing another embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

1: sound insulation layer 2: vibration and noise scattering layer

3: damping sheet layer 4: damping composition layer

5: polymer film layer

The present invention for solving the above problems consists of a high-strength porous fiber selected from the sound insulating layer (1) made of metal foil and glass fiber, carbon fiber or polyester fiber bonded with an emulsion adhesive of polyurethane or acrylic Filler selected from vibration and noise scattering layer (2), vibration damping sheet layer (3) having a vibration damping performance selected from polyvinyl chloride, polyethylene, polypropylene, polyurethane, mica, clay, graphite, silica, zinc oxide It can be achieved by providing a vibration damping material having a vibration damping filler and a vibration damping composition layer 4, polyethylene film layer 5 prepared by mixing styrene-butadiene-styrene resin or ethylene vinyl acetate resin and metal powder with asphalt. .

The metal foil constituting the sound insulation layer 1 mainly uses aluminum, copper, and lead foil, and its thickness is appropriate to use from 10 μm to 50 μm, and when used below 10 μm, the sound insulation effect expected can be achieved. If the 50㎛ or more is used, the vibration damping material itself loses its flexibility, resulting in the object of the present invention and excluded results.

In addition, the vibration and noise scattering layer (2) uses high-strength porous fibers such as glass fibers, carbon fibers, and polyester fibers, but has a water-soluble vibration-resistant polymer adhesive having an emulsion of acrylic and polyurethane resins so that particles of the fibers do not scatter. It is made by inserting it in a lattice shape while completely adhering it by removing it.

The fiber layer of the vibration and noise scattering layer 2 is formed by inserting porous fibers such as glass fibers, carbon fibers, and polyester fibers of high strength to form a non-uniform structural layer such as fine pores. Sound wave incident in Longitudinal Mode is converted into Shear Mode to maximize vibration and noise reduction effect by sound scattering effect.

In addition, the vibration damping sheet layer 3 laminated on the lower surface uses a polymer resin such as polyvinyl chloride, polyethylene, polypropylene, polyurethane, and has a vibration damping effect peculiar to a polymer. That is, since the polymer material has viscoelastic properties, when external force (vibration and noise) that changes periodically shows a delayed response (lag deformation) due to the viscosity property, the energy loss due to hysteresis is reduced. Is accompanied.

In other words, the viscoelastic material expresses the mechanical force by preserving elastic energy against some of the periodic force coming from the outside, and partly converts into heat due to the viscous property to reduce vibration and noise.

The constrained layer of the three-layer structure thus constructed has a simpler structure and significantly improved workability and economical efficiency than the previous application, and its vibration and noise attenuation functions are almost the same, and the flexibility is improved.

The vibration damping composition layer to be laminated under the three-layer constrained layer is made of various whiskers such as mica, clay, talc, graphite, silica, and zinc peroxide whisker, which improve the vibration damping properties of asphalt and polymer resin. Was added to make the vibration suppressing composition layer 4 to have a fine restraining structure to further increase the sound insulation.

The method for producing the vibration damping composition layer 4 is 10-30 parts by weight of thermoplastic polymer resin such as styrene-butadiene-styrene resin, ethylene-vinylacetate, and mica, based on 100 parts by weight of asphalt in a mixing tank of about 150 to 200 ° C. 30-200 parts by weight of damping filler selected from clay, talc, graphite, silica, zinc oxide and 10-30 parts by weight of metal powder are melt mixed and pressurized by press roll when discharged from the tank to complex sheet and composite sheet do.

In addition, the polymer film layer 5 is placed on the bottom surface of the vibration suppression composition layer 4 to increase workability and productability, and its thickness is generally used from 30 µm to 60 µm, and the total thickness of the vibration damping layer is 0.7 mm. The total thickness of the vibration damping material manufactured up to 2.7 mm and combining the restraint layer is 1.0 mm to 3 mm is the most appropriate thickness in consideration of the vibration damping performance and economy.

The vibration damping material produced in this way is an improved high performance composite vibration damping material having a constrained layer consisting of a sound insulating layer 1, a vibration and noise scattering layer 2, and a vibration damping sheet layer 3.

Hereinafter, the present invention will be described in more detail with reference to the following examples, but the present invention is not limited to the following examples. In the following Examples, the test method was measured using the ASTM E75 G80 Standard Method for the loss coefficient, and KSF 2808 for the acoustic transmission loss.

Example 1

The aluminum foil having a thickness of 10 μm and the polyvinyl chloride sheet having a thickness of 80 μm are laminated as shown in FIG. 1, and in the middle, the glass wool treated with a water-soluble acrylic emulsion resin polymer adhesive is inserted into a lattice pattern to restrict the three-layer structure. After forming the layer, about 100 parts by weight of asphalt, 25 parts by weight of styrene-butadiene-styrene resin, 8 parts by weight of polybutene, 5 parts by weight of mica, 23 parts by weight of talc, 3 parts by weight of graphite and 7 parts by weight of aluminum powder. Melt blending was carried out in a tank maintained at 200 ° C. to form the vibration damping composition layer 4 and a polyethylene film layer 5 was placed on the bottom thereof to prepare a vibration damping material.

Example 2

A vibration damper was prepared as in Example 1, but the thickness of the aluminum foil was 10 μm, and the thickness of the polyvinyl chloride sheet was 120 μm.

Example 3

A vibration damper was prepared as in Example 1, but the thickness of the aluminum foil was 10 μm, and the thickness of the polyvinyl chloride sheet was 150 μm.

Example 4

A vibration damping material was prepared as in Example 1, but the thickness of the aluminum foil was 10 μm, and the thickness of the polyvinyl chloride sheet was 200 μm.

Example 5

A vibration damping material was prepared as in Example 1, but the thickness of the aluminum foil was 20 µm and the thickness of the polyvinyl chloride sheet was 80 µm.

Example 6

A vibration damping material was prepared as in Example 1, but the thickness of the aluminum foil was 20 μm, and the thickness of the polyvinyl chloride sheet was 120 μm.

Example 7

A vibration damping material was prepared as in Example 1, but the thickness of the aluminum foil was 20 μm, and the thickness of the polyvinyl chloride sheet was 150 μm.

Example 8

A vibration damping material was prepared as in Example 1, but the thickness of the aluminum foil was 20 μm, and the thickness of the polyvinyl chloride sheet was 200 μm.

Example 9

A vibration damper was prepared as in Example 1, but the thickness of the aluminum foil was 30 μm, and the thickness of the polyvinyl chloride sheet was 80 μm.

Example 10

A vibration damping material was prepared as in Example 1, but the thickness of the aluminum foil was 30 μm, and the thickness of the polyvinyl chloride sheet was 120 μm.

Example 11

A vibration damping material was prepared as in Example 1, but the thickness of the aluminum foil was 30 μm, and the thickness of the polyvinyl chloride sheet was 150 μm.

Example 12

A vibration damper was prepared as in Example 1, but the thickness of the aluminum foil was 30 μm, and the thickness of the polyvinyl chloride sheet was 200 μm.

Example 13

A vibration damping material was prepared as in Example 1, but the thickness of the aluminum foil was 40 μm, and the thickness of the polyvinyl chloride sheet was 80 μm.

Example 14

A vibration damping material was prepared as in Example 1, but the thickness of the aluminum foil was 40 μm, and the thickness of the polyvinyl chloride sheet was 120 μm.

Example 15

A vibration damping material was prepared as in Example 1, but the thickness of the aluminum foil was 40 μm, and the thickness of the polyvinyl chloride sheet was 150 μm.

Example 16

A vibration damping material was prepared as in Example 1, but the thickness of the aluminum foil was 40 μm, and the thickness of the polyvinyl chloride sheet was 200 μm.

Example 17

A vibration damper was prepared as in Example 1, but the thickness of the aluminum foil was 50 μm, and the thickness of the polyvinyl chloride sheet was 120 μm.

Example 18

A vibration damper was prepared as in Example 1, but the thickness of the aluminum foil was 50 μm, and the thickness of the polyvinyl chloride sheet was 120 μm.

Example 19

A vibration damping material was prepared as in Example 1, but the thickness of the aluminum foil was 50 µm and the thickness of the polyvinyl chloride sheet was 150 µm.

Example 20

A vibration damping material was prepared as in Example 1, but the thickness of the aluminum foil was 50 μm, and the thickness of the polyvinyl chloride sheet was 200 μm.

Example 21

A vibration damping material is manufactured in the same manner as in Example 1, but the vibration damping sheet layer 3 is placed on the uppermost part and the sound insulating layer 1 is placed on the vibration damping composition layer 4 as shown in FIG. The thickness of the polyvinyl chloride sheet constituting the polyvinyl chloride sheet was 80 µm and the thickness of the aluminum foil constituting the sound insulation layer 1 was 10 µm.

Example 22

Prepared as in Example 21, the thickness of the polyvinyl chloride sheet was 80㎛ and the thickness of the aluminum foil was 20㎛.

Example 23

Prepared as in Example 21, the thickness of the polyvinyl chloride sheet was 80㎛ and the thickness of the aluminum foil was 30㎛.

Example 24

Prepared as in Example 21, the thickness of the polyvinyl chloride sheet was 80㎛ and the thickness of the aluminum foil was 40㎛.

Example 25

Prepared as in Example 21, the thickness of the polyvinyl chloride sheet was 80㎛ and the thickness of the aluminum foil was 50㎛.

Example 26

Prepared as in Example 21, the thickness of the polyvinyl chloride sheet was 120㎛ and the thickness of the aluminum foil was 10㎛.

Example 27

Prepared as in Example 21, the thickness of the polyvinyl chloride sheet was 120㎛ and the thickness of the aluminum foil was 20㎛.

Example 28

Prepared as in Example 21, the thickness of the polyvinyl chloride sheet was 120㎛ and the thickness of the aluminum foil was 30㎛.

Example 29

Prepared as in Example 21, the thickness of the polyvinyl chloride sheet was 120㎛ and the thickness of the aluminum foil was 40㎛.

Example 30

Prepared as in Example 21, the thickness of the polyvinyl chloride sheet was 120㎛ and the thickness of the aluminum foil was 50㎛.

Example 31

Prepared as in Example 21, the thickness of the polyvinyl chloride sheet was 150㎛ and the thickness of the aluminum foil was 10㎛.

Example 32

Prepared as in Example 21, the thickness of the polyvinyl chloride sheet was 150㎛ and the thickness of the aluminum foil was 20㎛.

Example 33

Prepared as in Example 21, the thickness of the polyvinyl chloride sheet was 150㎛ and the thickness of the aluminum foil was 30㎛.

Example 34

Prepared as in Example 21, the thickness of the polyvinyl chloride sheet was 150㎛ and the thickness of the aluminum foil was 40㎛.

Example 35

Prepared as in Example 21, the thickness of the polyvinyl chloride sheet was 150㎛ and the thickness of the aluminum foil was 50㎛.

Example 36

Prepared as in Example 21, the thickness of the polyvinyl chloride sheet was 200㎛ and the thickness of the aluminum foil was 10㎛.

Example 37

Prepared as in Example 21, the thickness of the polyvinyl chloride sheet was 200㎛ and the thickness of the aluminum foil was 20㎛.

Example 38

Prepared as in Example 21, the thickness of the polyvinyl chloride sheet was 200㎛ and the thickness of the aluminum foil was 30㎛.

Example 39

Prepared as in Example 21, the thickness of the polyvinyl chloride sheet was 200㎛ and the thickness of the aluminum foil was 40㎛.

Example 40

Prepared as in Example 21, the thickness of the polyvinyl chloride sheet was 200㎛ and the thickness of the aluminum foil was 50㎛.

Example 41

A vibration damping material is manufactured in the same manner as in Example 1, but a sound insulation layer is formed instead of the vibration damping sheet layer 3 to form a double sound insulation structure as shown in FIG. An aluminum foil was used as a sound insulation layer, the thickness of aluminum foil was 10 micrometers, and the damping material was produced with the thickness of the lower aluminum foil being 10 micrometers.

Example 42

A vibration damping material was prepared in the same manner as in Example 41, but the thickness of the upper aluminum foil was 10 μm, and the thickness of the lower aluminum foil was 20 μm.

Example 43

A vibration damping material was prepared in the same manner as in Example 41, but the thickness of the upper aluminum foil was 10 μm, and the thickness of the lower aluminum foil was 30 μm.

Example 44

A vibration damping material was prepared in the same manner as in Example 41, but the thickness of the upper aluminum foil was 10 μm, and the thickness of the lower aluminum foil was 40 μm.

Example 45

A vibration damping material was prepared in the same manner as in Example 41, but the thickness of the upper aluminum foil was 10 μm, and the thickness of the lower aluminum foil was 50 μm.

Example 46

A vibration damping material was prepared as in Example 41, but the thickness of the upper aluminum foil was 20 μm, and the thickness of the lower aluminum foil was 10 μm.

Example 47

A vibration damping material was prepared in the same manner as in Example 41, but the thickness of the upper aluminum foil was 20 μm, and the thickness of the lower aluminum foil was 20 μm.

Example 48

A vibration damping material was prepared in the same manner as in Example 41, but the thickness of the upper aluminum foil was 20 μm, and the thickness of the lower aluminum foil was 30 μm.

Example 49

A vibration damping material was prepared in the same manner as in Example 41, but the thickness of the upper aluminum foil was 20 μm, and the thickness of the lower aluminum foil was 40 μm.

Example 50

A vibration damping material was prepared in the same manner as in Example 41, but the thickness of the upper aluminum foil was 20 μm, and the thickness of the lower aluminum foil was 50 μm.

Example 51

A vibration damping material was prepared in the same manner as in Example 41, but the thickness of the upper aluminum foil was 30 μm, and the thickness of the lower aluminum foil was 10 μm.

Example 52

A vibration damping material was prepared in the same manner as in Example 41, but the thickness of the upper aluminum foil was 30 μm, and the thickness of the lower aluminum foil was 20 μm.

Example 53

A vibration damping material was prepared in the same manner as in Example 41, but the thickness of the upper aluminum foil was 30 μm, and the thickness of the lower aluminum foil was 30 μm.

Example 54

A vibration damping material was prepared in the same manner as in Example 41, but the thickness of the upper aluminum foil was 30 μm, and the thickness of the lower aluminum foil was 40 μm.

Example 55

A vibration damping material was prepared in the same manner as in Example 41, but the thickness of the upper aluminum foil was 30 μm, and the thickness of the lower aluminum foil was 50 μm.

Example 56

A vibration damping material was prepared in the same manner as in Example 41, but the thickness of the upper aluminum foil was 40 μm, and the thickness of the lower aluminum foil was 10 μm.

Example 57

A vibration damping material was prepared as in Example 41, but the thickness of the upper aluminum foil was 40 μm, and the thickness of the lower aluminum foil was 20 μm.

Example 58

A vibration damping material was prepared as in Example 41, but the thickness of the upper aluminum foil was 40 μm, and the thickness of the lower aluminum foil was 30 μm.

Example 59

A vibration damping material was prepared in the same manner as in Example 41, but the thickness of the upper aluminum foil was 40 μm, and the thickness of the lower aluminum foil was 40 μm.

Example 60

A vibration damping material was prepared in the same manner as in Example 41, but the thickness of the upper aluminum foil was 40 μm, and the thickness of the lower aluminum foil was 50 μm.

Example 61

A vibration damping material was prepared in the same manner as in Example 41, but the thickness of the upper aluminum foil was 50 μm, and the thickness of the lower aluminum foil was 10 μm.

Example 62

A vibration damping material was prepared in the same manner as in Example 41, but the thickness of the upper aluminum foil was 50 μm, and the thickness of the lower aluminum foil was 20 μm.

Example 63

A vibration damping material was prepared in the same manner as in Example 41, but the thickness of the upper aluminum foil was 50 μm, and the thickness of the lower aluminum foil was 30 μm.

Example 64

A vibration damping material was prepared in the same manner as in Example 41, but the thickness of the upper aluminum foil was 50 μm, and the thickness of the lower aluminum foil was 40 μm.

Example 65

As in Example 41, a vibration damping material was prepared, but the thickness of the upper aluminum foil was 50 μm, and the thickness of the lower aluminum foil was 50 μm.

Example 66

A vibration damping material is manufactured in the same manner as in Example 1, but a vibration damping sheet layer is formed instead of the sound insulation layer to form a double vibration damping structure as shown in FIG. As the damping layer, the thickness of the polyvinyl chloride sheet was set to 80 µm, and the thickness of the lower polyvinyl chloride sheet was set to 80 µm.

Example 67

A vibration damping material was prepared as in Example 66, but the thickness of the upper polyvinyl chloride sheet was 80 µm and the thickness of the lower polyvinyl chloride sheet was 120 µm.

Example 68

A vibration damping material was prepared as in Example 66, but the thickness of the upper polyvinyl chloride sheet was 80 μm, and the thickness of the lower polyvinyl chloride sheet was 150 μm.

Example 69

A vibration damping material was prepared as in Example 66, but the thickness of the upper polyvinyl chloride sheet was 80 μm, and the thickness of the lower polyvinyl chloride sheet was 200 μm.

Example 70

A vibration damping material was prepared as in Example 66, but the thickness of the upper polyvinyl chloride sheet was 120 µm and the thickness of the lower polyvinyl chloride sheet was 80 µm.

Example 71

A vibration damping material was prepared as in Example 66, but the thickness of the upper polyvinyl chloride sheet was 120 µm and the thickness of the lower polyvinyl chloride sheet was 120 µm.

Example 72

A vibration damping material was prepared as in Example 66, but the thickness of the upper polyvinyl chloride sheet was 120 µm and the thickness of the lower polyvinyl chloride sheet was 150 µm.

Example 73

A vibration damping material was prepared as in Example 66, but the thickness of the upper polyvinyl chloride sheet was 120 µm and the thickness of the lower polyvinyl chloride sheet was 200 µm.

Example 74

A vibration damping material was prepared as in Example 66, but the thickness of the upper polyvinyl chloride sheet was 150 μm, and the thickness of the lower polyvinyl chloride sheet was 80 μm.

Example 75

A vibration damping material was prepared as in Example 66, but the thickness of the upper polyvinyl chloride sheet was 150 µm and the thickness of the lower polyvinyl chloride sheet was 120 µm.

Example 76

A vibration damping material was prepared as in Example 66, but the thickness of the upper polyvinyl chloride sheet was 150 µm and the thickness of the lower polyvinyl chloride sheet was 150 µm.

Example 77

A vibration damping material was prepared as in Example 66, but the thickness of the upper polyvinyl chloride sheet was 150 μm, and the thickness of the lower polyvinyl chloride sheet was 200 μm.

Example 78

A vibration damping material was prepared as in Example 66, but the thickness of the upper polyvinyl chloride sheet was 200 μm, and the thickness of the lower polyvinyl chloride sheet was 80 μm.

Example 79

A vibration damping material was prepared in the same manner as in Example 66, but the thickness of the upper polyvinyl chloride sheet was 200 μm, and the thickness of the lower polyvinyl chloride sheet was 120 μm.

Example 80

A vibration damping material was prepared as in Example 66, but the thickness of the upper polyvinyl chloride sheet was 200 μm, and the thickness of the lower polyvinyl chloride sheet was 150 μm.

Example 81

A vibration damping material was prepared in the same manner as in Example 66, but the thickness of the upper polyvinyl chloride sheet was 200 μm, and the thickness of the lower polyvinyl chloride sheet was 200 μm.

Experimental Method

The experiment of the loss coefficient was carried out according to the contents described in the standard method of ASTM E75 G80, and the acoustic transmission loss was carried out according to the contents described in KS F 2808, and the results are shown in the following table.

As can be seen from Examples 1 to 81 shown in the above table, the loss coefficient and the acoustic transmission loss were found to be good in a wide temperature range and a wide frequency band, and the eight-layer structure of the first application was obtained. Although the structure is simpler than the genuine material, there is no difference in the vibration damping and sound insulation performance, and the manufacturing process of the vibration damping material can be simplified, and the thickness can be manufactured thinly, resulting in wider industrial use.

Claims (7)

In the vibration damping material which absorbs vibration and noise, it is made of a high strength porous fiber selected from the sound insulation layer (1) made of metal foil and glass fiber, carbon fiber or polyester fiber bonded with an emulsion adhesive of polyurethane or acrylic. A vibration and noise scattering layer (2), a vibration damping sheet layer (3) having a vibration damping performance selected from polyvinyl chloride, polyethylene, polypropylene, and polyurethane, and a whisker selected from mica, clay, graphite, silica, and zinc oxide A restraining composite vibration damping material comprising a vibration damping filler and a vibration damping composition layer (4) and a polyethylene film layer (5) prepared by mixing styrene-butadiene-styrene resin or ethylene vinyl acetate resin and metal powder with asphalt. The method of claim 1, wherein the vibration damping sheet layer (3), the vibration and noise scattering layer (2), the sound insulation layer (1) and the vibration damping composition layer (4), the polymer film layer (5) Constrained composite vibration damper. The restraint composite vibration damper according to claim 1, wherein the restraint layer comprises a sound insulation layer as a sound insulation layer (1), a vibration and noise scattering layer (2), and a sound insulation layer (1). The restraint type composite vibration damper according to claim 1, wherein the restraint layer comprises a vibration damping sheet layer, a vibration and noise scattering layer, and a vibration damping sheet layer. 2. The restraint-type composite vibration damper according to claim 1, wherein the sound insulation layer (1) uses a thickness of 10 µm to 50 µm. 2. The restraint-type composite vibration damping material according to claim 1, wherein the vibration damping sheet layer (3) uses a thickness of 80 µm to 200 µm. The damping composition layer (4) according to claim 1, wherein the damping composition layer (4) is composed of 10-30 parts by weight of the polymer resin, 30-200 parts by weight of the damping filler, and 10-30 parts by weight of the metal powder with respect to 100 parts by weight of the asphalt. Composite vibration damper.