KR20230121430A - Anti-vibration material using carbon fiber and its manufacturing method - Google Patents

Abstract

The present invention relates to a vibration-proof material using carbon fiber and a method for manufacturing the same, which includes a carbon fiber layer that is a woven carbon fiber material and a vibration-proof layer that is a liquefied PU (Polyurethane) resin, wherein the carbon fiber layer and the vibration-proof layer are continuously laminated, and the vibration-proof layer is continuously laminated. It is possible to provide an anti-vibration material using carbon fibers in which the layer is cured and integrated with the carbon fiber layer.
In addition, a lamination step of continuously stacking a carbon fiber layer, which is a carbon fiber weave, and an anti-vibration layer, which is a liquefied Polyurethane (PU) resin, on a frame, a curing step of curing the anti-vibration layer to produce a vibration-isolation material using carbon fiber, and It is possible to provide a method for manufacturing a dustproof material using carbon fiber, which includes a finishing step of separating the dustproof material from the mold and finishing the dustproof material.

Description

Anti-vibration material using carbon fiber and its manufacturing method

The present invention relates to a vibration damping material using carbon fiber and a manufacturing method thereof, and more particularly, to a carbon fiber layer, a carbon fiber weave, and a liquefied PU (Polyurethane) resin to an anti-vibration layer, and the carbon fiber layer and the anti-vibration layer are continuously laminated, It relates to an anti-vibration material using carbon fiber, which is integrated as the anti-vibration layer is cured, has excellent shape resilience and high anti-vibration properties, and a manufacturing method thereof.

Conventionally, various parts used in fields such as automobiles, railway vehicles, home appliances, office equipment, housing equipment, or machine tools tend to generate vibration noise during operation.

Due to this, there is a problem in that the vibration sound is transmitted to the device as it is, shortening the life of the device.

In addition, there is a need for an anti-vibration structure or a reinforcing structure capable of preventing damage to buildings or structures due to recent earthquakes.

In the case of buildings such as apartments, villas, and houses, various means are used to reduce external shocks or vibrations such as earthquakes and internal shocks or vibrations such as noise between floors.

In order to reduce shock and vibration applied to a building, structure, or device, vibration-proof materials may be used between floors, floors, or between parts of a building, structure, or device.

Anti-vibration materials are usually manufactured by molding synthetic rubber such as natural rubber or neoprene rubber. When installed on the floor of a building, structure or device, the floor is formed in a double structure and then a vibration-proof material is placed between them or a building, structure or device It can be used by attaching anti-vibration material to the part in contact with the external ground.

It is preferable that the anti-vibration material used for the purpose of blocking vibration and absorbing shock has high flexibility to quickly convert and dissipate vibration energy into thermal energy, while having high elasticity and low permanent compression ratio when used for a long time.

At this time, when the elastic force is low, it is difficult for the part deformed according to the load to return to its original state, and accordingly, a problem in that the effect of reducing vibration and shock is greatly reduced occurs.

However, elasticity and flexibility of the vibration isolating material conflict with each other, so that when the elasticity of the vibration isolating material is high, the flexibility is lowered, and when the flexibility is high, the elasticity is generally lowered.

Therefore, there is a need to develop a flexible anti-vibration material with high elasticity that can replace the existing anti-vibration material.

As a prior art, there is Korean Patent Registration No. 10-0309315 entitled "Self-attaching rubber-asphalt-based soundproofing and dustproofing material and manufacturing method thereof".

In order to solve the above problems, the present invention provides a carbon fiber having excellent shape resilience and high anti-vibration properties by using a highly elastic yet flexible carbon fiber weave and a PU (Polyurethane) resin having excellent shock absorption and noise blocking effects. It is an object of the present invention to provide a dustproof material and a manufacturing method thereof.

In order to solve the above problems, the anti-vibration material using carbon fiber according to an embodiment of the present invention may include a carbon fiber layer made of a woven carbon fiber material and an anti-vibration layer made of a liquefied polyurethane (PU) resin.

Here, the carbon fiber layer and the antivibration layer may be continuously laminated, and the antivibration layer may be cured to be integrated with the carbon fiber layer.

In addition, the vibration-proof material using the carbon fiber may further include a skeleton layer formed of composite fibers having a lattice pattern and laminated on the carbon fiber layer.

Here, the composite fiber may include 10 to 20 parts by weight of polyketone fiber, 10 to 20 parts by weight of leaf vein fiber, 3 to 6 parts by weight of LM (Low Melting) fiber, and 1 to 5 parts by weight of silicone rubber powder.

In addition, the anti-vibration material using carbon fiber is an elastic material, and has a plurality of wedge grooves that narrow as it moves upward and downward from the middle inside, a pair of air cavity grooves protruding to both sides at the middle of the wedge groove, and an upper surface and It may further include a reinforcing layer formed with coupling grooves in a form that widens as they move downward and upward, respectively, on the lower surface.

Here, the reinforcing layer may be integrated as the anti-vibration layer in a liquid state is penetrated into the coupling groove and the anti-vibration layer is cured.

In addition, the reinforcing layer may include fine beads of a carbon material filled in the wedge groove.

Here, the microbeads may move to and fill the air cavity groove according to the shape change of the reinforcing layer.

In addition, the method for manufacturing a vibration-proof material using carbon fiber according to an embodiment of the present invention includes a lamination step of continuously stacking a carbon fiber layer, which is a woven carbon fiber material, and an anti-vibration layer, which is a liquefied PU (Polyurethane) resin, on a frame, and curing the anti-vibration layer. A curing step of generating a dustproof material using carbon fibers and a finishing step of separating and finishing the dustproof material using carbon fibers from the frame may be included.

In addition, in the laminating step, a skeleton layer formed of composite fibers having a lattice pattern may be laminated on the carbon fiber layer.

Here, the composite fiber may include 10 to 20 parts by weight of polyketone fiber, 10 to 20 parts by weight of leaf vein fiber, 3 to 6 parts by weight of LM (Low Melting) fiber, and 1 to 5 parts by weight of silicone rubber powder.

As described above, the vibration-proof material using carbon fiber and the manufacturing method using carbon fiber according to an embodiment of the present invention use a highly elastic yet flexible carbon fiber weave and PU (Polyurethane) resin with excellent shock absorption and noise blocking effects, and thus have excellent shape resilience. and can have high anti-vibration properties.

In addition, by applying a skeleton layer having a lattice pattern, it is possible to secure uniform elasticity over the entire area and prevent the dustproof material from turning off.

In addition, by applying a reinforcing layer formed with an air cavity groove capable of securing an air layer even after the shape is deformed, high anti-vibration properties can be maintained even when the shape is deformed by external force.

1 is a cross-sectional view showing a dustproof material using carbon fibers according to an embodiment of the present invention.
2 is a perspective view showing a state in which a skeleton layer is formed on a vibration-proof material using carbon fibers according to an embodiment of the present invention.
Figure 3 is a perspective view showing the bone layer of Figure 2;
4 is a cross-sectional view showing a state in which a reinforcing layer is formed on a dustproof material using carbon fibers according to an embodiment of the present invention.
5 is a cross-sectional view illustrating the reinforcing layer of FIG. 4 .
6 (a) and (b) are exemplary views showing how the shape of the reinforcing layer of FIG. 4 is deformed.
7 is a cross-sectional view showing a state in which the microbeads are filled in FIG. 5;
8 is a flowchart schematically illustrating a method for manufacturing a dustproof material using carbon fibers according to an embodiment of the present invention.

Since the present invention can have various changes and various forms, specific embodiments will be described in detail in the text. However, this is not intended to limit the present invention to a specific form disclosed, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

Terms used in this application are only used to describe specific embodiments, and are not intended to limit the present invention. Expressions in the singular include plural expressions unless the context clearly dictates otherwise. In this application, terms such as "comprise" or "having" are intended to designate that a combination of features, numbers, steps, components, etc. described in the specification exist, but one or more other features or numbers, It should be understood that the presence or addition of combinations of steps, components, etc. is not precluded.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in this application, it should not be interpreted in an ideal or excessively formal meaning. don't

Here, repeated descriptions, well-known functions that may unnecessarily obscure the subject matter of the present invention, and detailed descriptions of configurations are omitted. Embodiments of the present invention are provided to more completely explain the present invention to those skilled in the art.

Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 8 for explaining an embodiment.

First, a vibration-proof material (hereinafter, abbreviated as 'vibration-proof material') using carbon fiber according to an embodiment of the present invention will be described below based on FIGS. 1 to 7 attached.

1 is a cross-sectional view showing a dustproof material using carbon fibers according to an embodiment of the present invention.

The anti-vibration material 1 according to the embodiment of the present invention is a anti-vibration material 1 having excellent shape resilience and high anti-vibration properties by being used in various fields such as buildings, structures, or devices, as well as effectively blocking noise.

Referring to FIG. 1 , the anti-vibration material 1 may include a carbon fiber layer 100 and an anti-vibration layer 200 .

Specifically, the anti-vibration material 1 may be formed in the form of disposing the anti-vibration layer 200 between a pair of carbon fiber layers 100 .

In addition, it is preferable that the carbon fiber layer 100 is formed at the lowermost and uppermost ends of the vibration-proof material 1, but is not limited thereto.

The carbon fiber layer 100 may be a carbon fiber woven material.

Specifically, the carbon fiber layer 100 is a plant. It may be a pitch-based carbon fiber woven fabric produced using pitch manufactured through petroleum and coal tar.

The carbon fiber layer 100 may have an elastic modulus of 700 GPa or more and 800 GPa or less, and a tensile strength of 3000 MPa or more and 4000 MPa or less, that is, a high elastic modulus and excellent tensile strength.

Thus, the carbon fiber layer 100 can absorb vibration with high elasticity to exhibit vibration-proof properties, and can withstand external force (EF) with excellent tensile strength.

The anti-vibration layer 200 may be a liquefied polyurethane (PU) resin.

At this time, in the anti-vibration layer 200, liquefied PU resin in a liquid state rather than a solid state is laminated on the carbon fiber layer 100 so that a part of the liquefied PU resin can permeate the carbon fiber layer 100.

Thereafter, the anti-vibration layer 200 may have a predetermined thickness and have a high elastic modulus of the cured PU resin itself by being cured.

In addition, the anti-vibration layer 200 is cured PU resin and has an elastic memory property, so that when the external force EF disappears, the restoring force to return to its original form can be increased.

The carbon fiber layer 100 and the antivibration layer 200 may be continuously laminated and the antivibration layer 200 may be cured to be integrated.

Specifically, the carbon fiber layer 100 and the anti-vibration layer 200 are put into a mold of a form required by the user, and a part of the anti-vibration layer 200, which is a liquefied PU resin, may permeate the carbon fiber layer 100.

At this time, the anti-vibration layer 200 may be injected to have a predetermined thickness.

Thereafter, the carbon fiber layer 100 and the anti-vibration layer 200 may be integrated by curing the anti-vibration layer 200 in a bonded state to form the anti-vibration material 1 .

Thus, the anti-vibration material 1 can absorb vibration with the high modulus of elasticity of the carbon fiber layer 100 and the anti-vibration layer 200, and can have excellent restoring force.

2 is a perspective view showing a state in which a bone layer is formed on a vibration-proof material using carbon fiber according to an embodiment of the present invention, and FIG. 3 is a perspective view showing the bone layer of FIG. 2 .

Referring to FIG. 2 , the anti-vibration material 1 according to the embodiment of the present invention may further include a skeleton layer 300 .

The skeleton layer 300 is a layer having elasticity and strength to maintain its shape, and is made of composite fibers and may be formed with a lattice pattern and laminated on the carbon fiber layer 100 .

Specifically, referring to FIG. 3 , the skeleton layer 300 may be formed in a size corresponding to that of the carbon fiber layer 100 and may have a lattice pattern at regular intervals and shapes.

At this time, the anti-vibration layer 200 of liquefied PU resin can be evenly penetrated and stacked in the lattice pattern of the skeleton layer 300 .

In addition, the composite fibers used in the skeleton layer 300 include 10 to 20 parts by weight of polyketone fibers, 10 to 20 parts by weight of leaf vein fibers, 5 to 10 parts by weight of LM (Low Melting) fibers, and 1 to 5 parts by weight of silicone rubber powder. can be formed

Polyketone fibers are polymer fibers made of carbon monoxide and olefins such as ethylene and propylene.

The polyketone fiber prepared as described above uses low density olefins such as elastomers, which are ultra-low density olefins of 0.885 g/cm ³ or less, or plastomers, which are polyolefins between 0.885 g/cm ³ and 0.915 g/cm ³ . can have a similar degree of elasticity.

In addition, the polyketone fiber itself may have excellent impact resistance, chemical resistance, and abrasion resistance.

However, polyketone fibers have a problem in that physical properties deteriorate due to long-term heat-resistant aging.

In addition, in order to apply the polyketone fiber to other fibers, it is necessary to impart wettability, adhesiveness, etc. to the surface because the adhesiveness of the fiber itself is limited.

When these polyketone fibers are mixed in less than 10 parts by weight, elasticity and basic physical properties of the skeleton layer 300 may deteriorate, and when mixed in more than 20 parts by weight, physical properties may deteriorate due to aging due to heat resistance during long-term use. and cracks may occur due to deterioration of adhesion of composite fibers.

In addition, the polyketone fiber preferably has a thickness of 10 to 50 μm.

At this time, when the polyketone fiber is formed with a thickness of less than 10 μm, sufficient basic physical properties such as elasticity, abrasion resistance, and chemical resistance may not be exhibited, and bonding with other fibers is incomplete when the thickness exceeds 50 μm, so that the skeleton layer 300 may not be in the shape of

Vein fiber is a natural fiber made from the leaves of plants.

For example, leaf vein fibers include abaca, sisal hemp, and pineapple fibers.

Specifically, leaf vein fibers can be processed into very thin sizes because the fibers are hard and can be processed in various ways using the stems of leaves of plants, that is, leaf veins.

Here, it is preferable to process the leaf vein fibers to a thickness of 15 to 50 μm and adhere them so as to surround the polyketone fibers in several layers.

At this time, if the thickness of the leaf vein fiber is less than 15㎛, it may not form a skeleton and may be broken or may not maintain its shape. can lower

In addition, the leaf vein fibers have excellent hygroscopicity, so that the LM fibers can be easily bonded.

Accordingly, the leaf vein fiber has an adhesive property and is easily applied to the polyketone fiber, thereby forming the skeleton of the skeleton layer 300.

LM fiber is a fiber made of polyester, and is an eco-friendly fiber with a low melting point and excellent adhesion.

Specifically, the LM fiber may be disposed between the polyketone fiber and the leaf vein fiber to provide adhesion, thereby bonding the polyketone fiber and the leaf vein fiber.

Thus, LM fibers can be integrated while maintaining the elasticity of polyketone fibers and the hardness of leaf vein fibers.

When these LM fibers are mixed in an amount of less than 5 parts by weight, cracks may occur in the skeleton layer 300 due to a decrease in adhesion between the polyketone fibers and the vein fibers, and when mixed in an amount exceeding 10 parts by weight, the base of the polyketone fibers and the vein fibers It can damage physical properties and rather weaken the degree of adhesion.

Silicone rubber powder is a fine powder of silicone rubber containing a polydimethylsiloxane component.

Specifically, the silicone rubber powder is coated with the powder coating method on the polyketone fiber and the leaf vein fiber, which are integrated by being bonded to the LM fiber, to impart surface smoothness to the skeleton layer 300 and to further improve the restoring force.

Here, the powder coating method is a method of forming a coating film by using dried fine powder as a paint, adhering the fine powder paint to an object to be coated, and then curing the fine powder paint.

When such silicone rubber powder is mixed in less than 1 part by weight, the surface smoothness of the skeleton layer 300 may be deteriorated, and when mixed in more than 5 parts by weight, the coating film becomes thick and damages the basic physical properties of polyketone fibers and leaf vein fibers. can

The skeleton layer 300 formed in this way secures uniform elasticity over the entire area of the anti-vibration material 1, can absorb vibration, and can prevent a turning off phenomenon.

4 is a cross-sectional view showing a state in which a reinforcing layer is formed on a vibration-proof material using carbon fiber according to an embodiment of the present invention, FIG. 5 is a cross-sectional view showing the reinforcing layer of FIG. 4, and FIG. 6 (a) and (b) are FIG. 4 is an exemplary view showing how the shape of the reinforcing layer is deformed, and FIG. 7 is a cross-sectional view showing the state in which the microbeads are filled in FIG. 5 .

Referring to FIG. 4 , the anti-vibration material 1 according to the embodiment of the present invention may further include a reinforcing layer 400 .

The reinforcing layer 400 may be formed between the anti-vibration layers 200 .

Specifically, the reinforcing layer 400 may have antivibration layers 200 formed on upper and lower surfaces, and carbon fiber layers 100 may be formed on each antivibration layer.

In addition, the reinforcing layer 400 is preferably formed to a thickness equal to or less than the total thickness of the anti-vibration layer 200 .

Referring to FIG. 5 , the reinforcing layer 400 is formed of an elastic material, and a wedge groove 410, an air cavity groove 420, and a coupling groove 430 may be formed.

Here, silicone, rubber, etc. may be used as the elastic material.

Accordingly, when an external force (EF) is applied to the reinforcing layer 400, a Poisson effect (PE) may appear.

Here, the Poisson effect (PE) refers to the property of expanding in two directions perpendicular to the applied external force (EF) when an external force (EF) is applied to the object.

The wedge groove 410 is an elastic material and may be formed in a shape that becomes narrower as it moves from the middle to the upper and lower sides.

Specifically, the wedge groove 410 may form an air layer therein.

At this time, since an air layer is formed inside the wedge groove 410, vibration energy may be attenuated according to friction with the air layer.

The air cavity groove 420 may protrude to both sides at the middle of the wedge groove 410 .

Specifically, when the wedge groove 410 is narrowed inward by the Poisson effect (PE) generated when an external force (EF) is applied to the dustproof material 1, the air cavity groove 420 on both sides of the air cavity groove 420 ) can be communicated.

Accordingly, the air cavity groove 420 maintains an air layer to damp vibration even when an external force (EF) is applied, such as when an object is placed on the anti-vibration material 1 .

Coupling grooves 430 may be formed on the upper and lower surfaces of the coupling grooves 430 that become wider as they move downward and upward, respectively.

Specifically, the anti-vibration layer 200 in a liquid state, that is, the liquefied PU resin may permeate into the coupling groove 430 in the form of the coupling groove 430, and then, the anti-vibration layer 200 may be cured and bonded thereto.

In addition, the coupling groove 430 is formed in a shape that widens as it moves downward and upward, respectively, so that it can be more stably coupled with the anti-vibration layer 200 .

Referring to FIG. 6 (a) and (b), the shape deformation of the reinforcing layer 400 is summarized, (a) is a state in which an external force EF is applied to the reinforcing layer 1.

At this time, although the air layer is formed in the wedge groove 410, it can be seen that the wedge groove 410 receives force inward due to the Poisson effect (PE).

In addition, (b) of FIG. 6 shows a state in which the external force (EF) is continuously applied to the reinforcing layer 400 in the state of (a) and the wedge groove 410 is narrowed by the Poisson effect (PE), thereby reducing the air layer.

At this time, it can be confirmed that the air cavity groove 420 is in a communication state and maintains the air layer.

The reinforcing layer 400 can attenuate vibration energy to increase anti-vibration properties, and maintain high anti-vibration properties by securing an air layer even when an external force is applied.

Referring to FIG. 7 , the reinforcing layer 400 may include carbon fine beads 440 filled in the wedge groove 410 .

The microbeads 440 may have a high elastic modulus and excellent tensile strength by being formed of a carbon material.

In addition, the microbeads 440 may absorb vibration due to material characteristics inside the wedge groove 410 and may attenuate vibration energy while moving by the vibration.

In addition, even if the wedge groove 410 is narrowed by an external force, the microbeads 440 may move to and fill the air cavity groove 420 in which the air layer is secured.

Accordingly, the microbeads 440 can absorb vibration and attenuate vibration energy even when the shape of the reinforcing layer 400 is deformed.

Hereinafter, the present invention will be described in more detail by way of examples.

However, the following examples are merely illustrative of the present invention, and the contents of the present invention are not limited by the following examples.

[Example 1]

A carbon fiber layer, which is a woven carbon fiber material, and an anti-vibration layer, which is liquefied PU (Polyurethane), were continuously laminated, and the anti-vibration layer was cured to prepare an anti-vibration material.

At this time, the carbon fiber layer was formed of a woven carbon fiber having a modulus of elasticity of 750 GPa and a tensile strength of 3500 MPa, and was disposed at the bottom and top.

[Example 2]

An antivibration material was manufactured in the same manner as in Example 1, except that a skeleton layer laminated on the carbon fiber layer and in which the antivibration layer penetrated between the grid patterns was further included.

At this time, the skeleton layer was made of composite fibers, and the composite fibers were made of 15 parts by weight of polyketone fibers with a thickness of 15 μm, 15 parts by weight of leaf vein fibers with a thickness of 20 μm, 8 parts by weight of LM fibers, and 3 parts by weight of silicone rubber powder.

[Example 3]

An anti-vibration material was manufactured in the same manner as in Example 1, except that a reinforcing layer was further included between the anti-vibration layers.

At this time, the reinforcing layer is formed of silicon, and anti-vibration layers are disposed on the upper and lower surfaces, and the thickness is 2/3 of the total thickness of the anti-vibration layer.

[Example 4]

An anti-vibration material was prepared in the same manner as in Example 4, except that the reinforcing layer was filled with fine beads.

At this time, the microbeads were made of carbon material.

[Comparative Example 1]

Among the anti-vibration materials sold on the market, a vibration-isolation material made of natural rubber was randomly selected.

[Comparative Example 2]

Among the anti-vibration materials sold on the market, the anti-vibration materials made of cork were randomly selected.

[Comparative Example 3]

A dustproof material was manufactured in the same manner as in Example 2, except for the material content of the composite fibers constituting the skeleton layer.

At this time, the composite fibers were prepared from 8 parts by weight of polyketone fibers having a thickness of 15 μm, 8 parts by weight of leaf vein fibers having a thickness of 20 μm, 1 part by weight of LM fibers, and 0.5 parts by weight of silicone rubber powder.

[Comparative Example 4]

An anti-vibration material was prepared in the same manner as in Example 3, except that a reinforcing layer was further included between the anti-vibration layers.

At this time, the reinforcing layer is formed of silicon, and anti-vibration layers are disposed on the upper and lower surfaces, and the thickness is twice the total thickness of the anti-vibration layer.

[Experimental Example 1] Evaluation of anti-vibration performance of anti-vibration materials

The anti-vibration performance of the anti-vibration material was evaluated through an anti-vibration performance evaluation device consisting of a harmonic signal analyzer, signal amplifier, accelerometer sensor, PEI (Polyetherimide) diaphragm, and impact hammer.

The anti-vibration materials of Examples 1 to 4 and Comparative Examples 1 to 4 were prepared by being cut into the same size, and the anti-vibration performance was evaluated by generating vibrations of the same intensity in the anti-vibration performance evaluation device.

The anti-vibration performance was confirmed by converting the degree of damping of vibration into a percentage.

The results are shown in Table 1.

Anti-vibration performance (%) Anti-vibration performance (%) Example 1 96.3 Comparative Example 1 89.1 Example 2 97.4 Comparative Example 2 88.4 Example 3 97.9 Comparative Example 3 92.2 Example 4 98.2 Comparative Example 4 97.8

As shown in Table 1, it can be seen that Examples 1 to 4, Comparative Example 3 and Comparative Example 4 of the present invention have better dustproof performance than Comparative Example 1 and Comparative Example 2 on the market.

In addition, it can be seen that Example 2, in which a skeleton layer is added, and Examples 3 and 4, in which a reinforcing layer is added, have better anti-vibration performance than Example 1.

In addition, when the fine beads are formed in the reinforcing layer as in Example 4, it can be seen that the anti-vibration performance is slightly better than that of Example 3 in which the fine beads are not formed.

On the other hand, in the case of Comparative Example 3, it can be seen that the anti-vibration performance is significantly lower than that of Examples 1 and 2, so that the anti-vibration performance varies depending on the material composition ratio of the composite fibers constituting the skeleton layer.

In addition, in the case of Comparative Example 4, since there is almost no difference in anti-vibration performance from Example 3, it can be confirmed that the thickness of the reinforcing layer has little relation to the anti-vibration performance.

[Experimental Example 2] Evaluation of resilience of anti-vibration material

According to the test method of KS M 3802, the resilience of the anti-vibration material was evaluated through the residual indentation rate.

The anti-vibration materials of Examples 1 to 4 and Comparative Examples 1 to 4 were prepared by being cut into the same size, and a load of 222 N was applied for 5 minutes using a steel plate having the same size as the anti-vibration material.

Thereafter, the load was removed, and after 60 minutes, the indentation amount was read through a dial gauge, and the residual indentation rate was calculated through the thickness of the dustproof material before the test and the thickness of the dustproof material according to the indentation amount after the test, and it was confirmed by converting to percentage.

If the residual indentation rate is low, the pressure remains in the anti-vibration material, resulting in irregularities, and it can be determined that the resilience is good, and if the residual indentation rate is high, it can be determined that the resilience is not good.

The results are shown in Table 2.

Residual indentation rate (%) Residual indentation rate (%) Example 1 1.9 Comparative Example 1 3.8 Example 2 1.3 Comparative Example 2 5.5 Example 3 2.2 Comparative Example 3 3.6 Example 4 2.1 Comparative Example 4 3.4

As shown in Table 1, it can be confirmed that Examples 1 to 4 have better dustproof performance than Comparative Examples 1 and 2 on the market.

In addition, it can be seen that the residual indentation rate, that is, the restoring force, of Example 2, in which the skeleton layer is added, is superior to Examples 1, 3, and 4.

In addition, Example 3 and Example 4 have a lower restoring force than Example 1, but it can be confirmed that there is no significant difference.

On the other hand, in the case of Comparative Example 3, it can be confirmed that the restoring force varies according to the material composition ratio of the composite fibers constituting the skeleton layer, as the restoring force is significantly lower than that of Examples 1 and 2.

In addition, even in the case of Comparative Example 4, since the restoring force is significantly lower than that of Examples 1 and 3, it can be confirmed that the restoring force varies depending on the thickness of the reinforcing layer, as there is almost no difference.

Next, a method for manufacturing a dustproof material using carbon fibers according to an embodiment of the present invention (hereinafter, abbreviated as 'method for manufacturing a dustproof material') will be described below based on FIG. 8 attached.

8 is a flowchart schematically illustrating a method for manufacturing a dustproof material using carbon fibers according to an embodiment of the present invention.

The method for manufacturing the anti-vibration material according to an embodiment of the present invention is a method of manufacturing the anti-vibration material 1, and has excellent shape resilience by using carbon fiber fabric and liquefied Polyurethane (PU) resin in various fields such as buildings, structures, or devices. It is possible to manufacture the anti-vibration material 1 having not only high anti-vibration properties but also a property of effectively blocking noise.

Here, the anti-vibration material 1 is substantially the same as the anti-vibration material 1 described above.

Referring to FIG. 8 , the method for manufacturing a dustproof material may include a laminating step (S10), a curing step (S20), and a finishing step (S30).

The laminating step (S10) is a step of continuously laminating the carbon fiber layer 100, which is a carbon fiber weave, and the antivibration layer 200, which is a liquefied PU (Polyurethane) resin, on a frame.

At this time, in the lamination step (S10), it is preferable that the carbon fiber layer 100 is put in first and last and disposed at the bottom and top of the dustproof material 1, but it is not limited thereto.

In addition, in the lamination step (S10), the anti-vibration layer 200 should be put into the mold as a liquefied PU resin in a liquid state.

In addition, in the laminating step (S10), a part of the anti-vibration layer 200 may permeate the carbon fiber layer 100 while the anti-vibration layer 200, which is a liquefied PU resin, is laminated on the carbon fiber layer 100.

The curing step (S20) is a step of generating the anti-vibration material 1 by curing the anti-vibration layer 200.

Specifically, in the curing step (S20), the carbon fiber layer 100 and the anti-vibration layer 200 may be integrated while the anti-vibration layer 200 partially permeated in the lamination step (S10) is cured.

The finishing step (S30) is a step of separating the dustproof material 1 from the frame and finishing it.

Thereafter, the anti-vibration material 1 may be cut and used according to the user's request.

In the above-described laminating step (S10), a skeleton layer 300 formed of composite fibers having a lattice pattern may be laminated on the carbon fiber layer 100.

At this time, in the stacking step (S10), it is preferable that the skeleton layer 300 is stacked first, but is not limited thereto.

Specifically, in the lamination step (S10), when the skeleton layer 300 is first laminated on the carbon fiber layer 100, the anti-vibration layer 200, which is liquefied PU resin, is composed of the skeleton layer 300 laminated on the carbon fiber layer 100. After being put into the mold, it can be evenly penetrated into the lattice pattern of the skeleton layer 300 and stacked.

Contrary to this, in the stacking step (S10), when the anti-vibration layer 200 is first laminated on the carbon fiber layer 100, the anti-vibration layer 200 first introduced into the lattice pattern of the skeleton layer 300 permeates the skeleton layer 300. may be stacked on the carbon fiber layer 100 due to gravity.

In addition, the reinforcing layer 400 may be formed on the anti-vibration layer 200 in the stacking step (S10).

Specifically, in the lamination step (S10), after the carbon fiber layer 100 is added, the anti-vibration layer 200 is first added and laminated, and the reinforcing layer 400 is added and laminated thereon, and then the anti-vibration layer 200 is added again. By being laminated, the reinforcing layer 400 may be formed between the anti-vibration layers 200 .

At this time, in the stacking step (S10), the anti-vibration layer 200, which is a liquefied PU resin, may be infiltrated in the shape of the coupling groove 430 of the reinforcing layer 400.

Thereafter, as the curing step (S20) proceeds, a part of the anti-vibration layer 200 penetrates into the coupling groove 430 and is cured so that the anti-vibration layer 200 and the reinforcing layer 400 can be stably bonded.

As above, a specific part of the content of the present invention has been described in detail, for those skilled in the art, these specific descriptions are only preferred embodiments, and the scope of the present invention is not limited thereby. It will be clear. Accordingly, the substantial scope of the present invention will be defined by the appended claims and their equivalents.

1: anti-vibration material
100: carbon fiber layer
200: anti-vibration layer
300: skeleton layer
400: reinforcement layer
410: wedge groove
420: air cavity groove
430 Defect groove
440: fine beads
EF: external force
PE: Poisson effect

Claims (8)

A carbon fiber layer, which is a carbon fiber weave, and
Including a dustproof layer that is a liquefied PU (Polyurethane) resin,
The carbon fiber layer and the anti-vibration layer are continuously laminated, and the anti-vibration layer is cured to be integrated with the carbon fiber layer.
According to claim 1,
The anti-vibration material using the carbon fiber,
A vibration-proof material using carbon fibers, further comprising a skeleton layer formed of composite fibers having a lattice pattern and laminated on the carbon fiber layer.
According to claim 1,
The composite fiber,
10 to 20 parts by weight of polyketone fibers, 10 to 20 parts by weight of leaf vein fibers, 3 to 6 parts by weight of LM (Low Melting) fibers, and 1 to 5 parts by weight of silicone rubber powder.
According to claim 1,
The anti-vibration material using the carbon fiber,
A plurality of wedge grooves made of elastic material that narrow as they move upwards and downwards from the middle to the inside, a pair of air cavity grooves protruding to both sides at the middle of the wedge grooves, and the upper and lower surfaces of the grooves as they move downward and upward, respectively Further comprising a reinforcing layer formed with a widening coupling groove,
The reinforcing layer is
The anti-vibration material using carbon fiber, characterized in that the anti-vibration layer in a liquid state penetrates into the coupling groove and is integrated as the anti-vibration layer is cured.
According to claim 4,
The reinforcing layer is
Including fine beads of carbon material filled in the wedge groove,
The microbeads,
Anti-vibration material using carbon fiber, characterized in that it moves to and fills the air cavity groove according to the shape change of the reinforcing layer.
A lamination step of continuously stacking a carbon fiber layer, which is a carbon fiber weave, and an anti-vibration layer, which is a liquefied PU (Polyurethane) resin, on a frame;
A curing step of curing the anti-vibration layer to produce an anti-vibration material using carbon fiber; and
A method for manufacturing a dustproof material using carbon fibers comprising a finishing step of separating the dustproof material using the carbon fibers from the frame and finishing.
According to claim 6,
In the layering step,
A vibration-proof material manufacturing method using carbon fibers, characterized in that by laminating a skeleton layer formed with a grid pattern of composite fibers on the carbon fiber layer.
According to claim 7,
The composite fiber,
10 to 20 parts by weight of polyketone fibers, 10 to 20 parts by weight of leaf vein fibers, 3 to 6 parts by weight of LM (Low Melting) fibers, and 1 to 5 parts by weight of silicone rubber powder.