JPH0873648A - Sound insulating and vibration damping material - Google Patents

Abstract

PURPOSE: To obtain a sound insulating and vibration damping material, having excellent vibration damping and sound insulating properties over a wide temperature region and useful for suppression, etc., of vibration and noise of automobiles, building materials, household appliances, etc., by filling at least one sound insulation and vibration damping imparter in a resin matrix. CONSTITUTION: This sound insulating an vibration damping material is obtained by blending a resin matrix comprising at least two resins having different peak temperatures in loss factor (e.g. vinyl chloride-polymethyl methacrylate) and at least one resin in having a partially cross-linked structure (e.g. a styrene- butadiene rubber) with 10-30wt.% mica flakes having 90-1000μm weight-average flake diameter as a sound insulating and vibration damping material and 70-50wt.% calcium carbonate, etc., as a sound insulating and vibration damping promoter, introducing the resultant blend into a kneading roll set at 160 deg.C, kneading the blend, sandwiching the kneaded blend between metallic molds heated at 180 deg.C and press molding the kneaded blend. The resultant material is useful for suppression, etc., of vibration and noise of automobiles, interior finish materials, building material, household appliances, etc.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sound insulation and vibration damping material having excellent sound insulation and vibration damping properties, which is applied for the purpose of suppressing vibration and noise of automobiles, interior materials, building materials, home appliances and the like.

[0002]

2. Description of the Related Art In recent years,
Noise and vibration generated by automobiles, which are indispensable for social life, have been highlighted as a social problem, and in the process of strengthening legal regulations, there has been a strong demand for measures to prevent them. On the other hand, there is also a demand for comfort such as vibration and noise in the vehicle from the side of the driver and passengers.

Further, with respect to building materials such as interior materials and building materials used for structures such as factories, houses and schools, damage from vibration and noise from the outside of the structure and vibration and noise generated inside the structure Damage due to diffusion to the outside has come to be taken into account, and noise and vibration countermeasures are desired.

With respect to household appliances, which are sources of vibration and noise inside the structure, the need for users to take measures against vibration and noise is increasing due to the spread of the idea of aiming for a more comfortable life.

Conventionally, as concrete measures against vibration and noise, sound insulation materials such as vinyl chloride sheets and rubber sheets, felt and glass wool, etc. are used in parts where vibration and noise are generated in automobiles, interior materials, building materials, home appliances, etc. Different materials such as sound absorbing material made of porous material such as foamed resin such as polyurethane foam, polyethylene foam, etc., and vibration damping material having viscoelastic properties such as asphalt and resin are used in combination according to the purpose. The method of doing was adopted.

For example, in the floor portion of an automobile, it is necessary to take measures against the transmitted sound from the engine and tires and the radiated sound due to vibration. Therefore, an asphalt sheet, a felt having a thickness of 10 mm, and a urethane having a thickness of about 10 mm are laminated on a floor panel of an automobile, and a carpet is laid on the asphalt sheet.

In the conventional method in which different materials such as a sound insulating material, a sound absorbing material, and a vibration damping material are combined as described above to take measures against vibration and noise, a plurality of materials are prepared for the measures against vibration and noise, and the It took a lot of work, such as pasting and stacking them one by one. Further, since there are a plurality of materials for countermeasures against vibration and noise, it cannot be handled as a single member, and there is a point that handleability is poor. Further, none of the above-mentioned combinations of the sound insulating material, the sound absorbing material, and the vibration damping material have sufficient effects on both the vibration damping property and the sound insulating property.

An object of the present invention is to provide a sound insulation and damping material which can be handled as one member and which has both excellent sound insulation and vibration damping properties.

Further, the sound insulating material and the vibration damping material used in the conventional method, such as the asphalt, are
In summer, it is exposed to high temperatures and softens, and in winter it is cooled and hardened, so that it is susceptible to temperature changes, and there is a problem that it does not always exhibit sufficient performance.

Another object of the present invention is to provide a sound insulation system having excellent vibration damping properties and sound insulation properties over a wide temperature range such as room temperature to high temperature range, low temperature range to room temperature range, or low temperature range to high temperature range. It is to provide a swing material.

[0011]

In order to achieve the above-mentioned object, the invention according to claim 1 is characterized in that the resin matrix is filled with at least one type of sound insulation and vibration damping agent. The damping material was used as the gist.

The invention of claim 2 has as its gist a sound damping material, wherein the sound damping agent is mica flakes.

A third aspect of the present invention is to provide a sound-damping and damping material, characterized in that mica scale is filled in a proportion of 1 to 60% by weight based on the total weight of the sound-damping and damping material. did.

The gist of the invention according to claim 4 is the sound-damping and damping material, characterized in that the weight average flake diameter of the mica flakes is 90 to 1000 µm.

According to a fifth aspect of the invention, at least one sound insulation and vibration imparting agent and at least one in the resin matrix.
The main point is a sound-damping and damping material, which is characterized in that it is filled with various kinds of sound-damping and damping agents.

[0016] The gist of the invention according to claim 6 is that the sound-damping and damping material is mica scale and the sound-damping and damping accelerator is calcium carbonate.

According to a seventh aspect of the present invention, the mica scale and the calcium carbonate are filled in a proportion of 10 to 30% by weight and 70 to 50% by weight, respectively, with respect to the total weight of the sound damping and damping material. The main point is a sound insulation and damping material.

The gist of the invention of claim 8 is a sound insulation and damping material characterized in that the weight average flake diameter of mica flakes is 90 to 1000 μm.

According to a ninth aspect of the present invention, the resin matrix comprises at least two kinds of resins having different peak temperatures of the loss coefficient and at least one kind of resin having a partially crosslinked structure, and at least one kind of resin is contained in the resin matrix. The main point is a sound damping material, which is characterized in that it is filled with a sound damping material.

The invention of claim 10 has as its gist a sound damping material, wherein the sound damping agent is mica flakes.

The gist of the invention of claim 11 is the sound-damping and damping material, characterized in that mica scale is filled in a proportion of 1 to 60% by weight with respect to the total weight of the sound-damping and damping material. did.

The twelfth aspect of the present invention has as its gist a sound damping material, characterized in that the weight average flake diameter of the mica flakes is 90 to 1000 μm.

According to a thirteenth aspect of the present invention, the resin matrix comprises at least two kinds of resins having different peak temperatures of the loss coefficient and at least one kind of resin having a partially crosslinked structure, and at least the resin matrix contains at least two kinds of resins. A sound-damping and damping material characterized by being filled with one kind of sound-damping and damping agent and at least one kind of sound-damping and damping agent is summarized.

The invention of claim 14 has as its gist a sound-damping and damping material, characterized in that the sound-damping and damping agent is mica scale and the sound-damping and damping accelerator is calcium carbonate.

According to a fifteenth aspect of the present invention, the mica flakes and the calcium carbonate are filled in proportions of 10 to 30% by weight and 70 to 50% by weight, respectively, with respect to the total weight of the sound damping and damping material. The characteristic sound insulation and damping material was used as the gist.

The invention of claim 16 has as its gist a sound insulating and vibration damping material characterized in that the weight average flake diameter of mica flakes is 90 to 1000 μm.

The sound insulation and damping material of the present invention will be described in more detail below. First, the sound insulation and damping material according to claims 1 to 4 will be described. This sound insulation and damping material is one in which at least one sound insulation and damping agent is filled in a resin matrix. The resin that constitutes the resin matrix is a viscoelastic polymer that exhibits vibration damping at the temperature of the parts that generate vibration and noise such as automobiles, interior materials, building materials, and home appliances. Is good.

Specifically, polyvinyl chloride, polyethylene, polypropylene, ethylene-vinyl acetate copolymer,
Examples thereof include resins such as polymethylmethacrylate, polyvinylidene fluoride, polyisoprene, polystyrene, styrene-butadiene-acrylonitrile copolymer, styrene-acrylonitrile copolymer, and blends thereof. Among them, polyvinyl chloride is preferable because it has excellent moldability and is inexpensive.

The peak temperature of the loss coefficient of the resin and the peak temperature of the sound pressure level (that is, the temperature at which the sound insulation is most exerted) are substantially the same, and the operating temperature of the parts to which the sound insulation and damping material is applied. In order to maximize the damping performance of the sound insulation and vibration damping material in the operating temperature range, select the resin according to It will also be done.

Next, the sound insulation and vibration imparting agent contained in the resin matrix will be described. In the sound insulation and vibration damping material of the present invention, the sound insulation and vibration imparting agent has excellent sound insulation properties that the sound insulation and vibration imparting agent itself has by filling the resin with the sound insulation and vibration damping agent,
It has a function of imparting vibration damping property to the resin and dramatically improving the sound insulating property and the vibration damping property which the resin originally has. Specifically, mica flakes, glass flakes, glass fibers, carbon fibers and the like can be mentioned. Among them, mica flakes are preferable because when they are filled in a resin matrix, excellent sound insulating properties and vibration damping properties, which cannot be predicted from the inherent sound insulating properties and vibration damping properties of the resin, are exhibited.

For example, as shown in FIG. 1, a polyvinyl chloride resin matrix filled with mica scales as a sound insulation and damping agent, and a polyvinyl chloride resin matrix similarly calcium carbonate as a sound insulation and damping agent. When compared with those filled with mica, the sound insulation due to the mica scale filling is far superior to the sound insulation due to the calcium carbonate filling.

The weight average flake diameter of the mica flakes is preferably in the range of 90 to 1000 μm. The reason is that if the weight-average flake diameter is less than 90 μm, there is an advantage that it can be easily mixed in the resin and the dispersibility is good, but it is expected that the sound insulation property and the vibration damping property will be improved by filling the resin. It is not possible. On the other hand, when the particle size exceeds 1000 μm, the sound insulating property and the vibration damping property are improved, but it becomes bulky, so that it is difficult to fill the resin, and the mica scale cannot be uniformly dispersed in the entire resin, and the vibration damping is performed over the entire resin matrix. Therefore, the effect of uniformly improving the sound insulation and the sound insulation cannot be obtained.

The amount of mica flakes to be filled in the resin is 1 to 60% by weight, preferably 20 to 50% by weight, based on the total weight of the sound insulating and vibration damping material. If it is out of this range, problems such as insufficient improvement of vibration damping property and sound insulation property, failure of molding, deterioration of impact resistance and strength may occur.

The above-mentioned resin and the sound-damping / damping-providing agent are mixed in a predetermined ratio and kneaded with a Banbury mixer, a roll or the like to obtain the sound-damping / damping material of the present invention. Incidentally, when the resin is filled with mica scales as a sound insulation and vibration imparting agent, it is preferable to carry out at the same time in the process of manufacturing the sound insulation and vibration damping material, in which case the size of the mica scales is as described above. Since the vibration damping property and the sound insulating property of the resin composition are greatly affected, it is necessary to take sufficient care not to break the mica flakes.

The sound-damping and damping material thus produced is formed into a shape according to the application and purpose by a calendering method, an extrusion method, or the like, and is used as a material for vibration and noise countermeasures for automobiles, interior materials, building materials, etc. Can be used.

Next, the sound insulation and damping material according to claims 5 to 8 will be described. This sound insulation and vibration damping material is obtained by filling a resin matrix with a sound insulation and vibration damping imparting agent and a sound insulation and vibration damping accelerator. In this sound insulation and vibration damping material, the resin matrix and the sound insulation and vibration damping imparting agent are the same as those of the above-described sound insulation and vibration damping materials, and therefore the description thereof is omitted here.

As described above, the sound-insulating and vibration-damping agent such as mica scale has excellent sound-damping property in addition to excellent vibration-damping property. In addition, since the vibration damping property is exhibited, basically, a good sound damping material can be obtained by filling only the sound damping agent. However, in fields where extremely high levels of vibration control and noise control are required, such as home appliances, demands for vibration control and noise control are expected to become even higher in the future due to technological development. is expected. The sound-damping / damping-promoting agent in the sound-damping / damping material of the present invention has a function of further improving the sound-insulating property and the vibration-damping property by the sound-damping / damping imparting agent so as to meet such requirements. Calcium carbonate, barite, precipitated barium sulfate and the like can be used as the sound insulation / vibration promoter. Among them, calcium carbonate is filled with the mica fluff so that the sound insulation and the vibration damping by filling the mica fluff can be achieved. The effect of further improving the sex will be derived. As the calcium carbonate, light calcium carbonate or heavy calcium carbonate, which has been widely used as a filler for a sound insulating material, can be used.

When mica scales are used as a sound insulation and vibration damping agent and calcium carbonate is used as a sound insulation and vibration control promoter and these are filled into polyvinyl chloride, the amount of the mica scales and calcium carbonate to be filled in the resin matrix. The mica scale is 10 to 3 with respect to the total weight of the sound insulation and vibration damping material.
It is preferable that 0% by weight and 70 to 50% by weight of calcium carbonate are filled. The reason is that when the resin weight is out of this range, molding may not be performed, or impact resistance and strength may deteriorate. On the other hand, when the ratio of mica flakes is less than the above range or the ratio of calcium carbonate is more than the above range, sufficient improvement in vibration damping and sound insulation cannot be obtained. Also, if the ratio of mica flakes is higher than the above range, or if the ratio of calcium carbonate is low, it cannot be molded or the amount of mica scales used increases, resulting in an increase in the price of the sound damping material. This is because it causes a problem.

The above-mentioned resin, sound insulation and vibration damping agent, and sound insulation and vibration damping accelerator are blended in a predetermined ratio and kneaded with a Banbury mixer, a roll or the like to obtain the sound insulation and vibration damping material of the present invention. be able to. It should be noted that it is preferable to fill the resin with the sound insulation and vibration damping imparting agent and the sound insulation and vibration damping accelerator at the same time in the process of manufacturing the sound insulation and vibration damping material. Further, when using mica scales as a sound insulation and vibration damping agent, the size of the mica scales as described above has a great influence on the vibration control of the resin composition and the level of sound insulation, and thus the scales of the mica scales are broken. You need to be careful not to.

The sound-damping and damping material produced in this way is formed into a shape according to the application and purpose by a calendering method, an extrusion method, or the like, and is used as a material for vibration and noise countermeasures for automobiles, interior materials, building materials, etc. Can be used.

In addition to the sound-damping and vibration-damping agent and the sound-damping and vibration-damping promoter, the resin may be filled with short fibers to improve the mechanical strength of the molded product. It is possible to select a material that imparts various functions according to the above and add it.

Next, the sound insulation and damping material according to claims 9 to 12 will be described. In this sound insulation and damping material, the resin matrix is composed of at least two kinds of resins having different peak temperatures of the loss coefficient and at least one kind of resin having a partially cross-linked structure, and at least one kind of sound insulation and damping material is provided in the resin matrix. It is filled with an additive. In this sound insulation and vibration damping material, the sound insulation and vibration damping imparting agent is the same as that of the above-described sound insulation and vibration damping materials, and therefore the description thereof is omitted here.

As the at least two kinds of resins having different peak temperatures of loss factors (that is, temperatures at which the vibration damping property is most exerted) constituting the resin matrix, for example, 10 to 3 are used.
Resin with a loss factor peak temperature in the normal temperature range of 0 ° C and 8
A resin having a peak temperature of loss coefficient in a high temperature range of 0 to 130 ° C., a resin having a peak temperature of loss coefficient in a low temperature range of −20 to 10 ° C., and a resin having a peak temperature of loss coefficient in a high temperature range , A resin having a peak temperature of the loss coefficient in the low temperature range, a resin having a peak temperature of the loss coefficient in the normal temperature range, and a resin having a peak temperature of the loss coefficient in the high temperature range. It may be appropriately determined according to the operating temperature of the parts to which the vibration material is applied.

The peak temperature of the loss coefficient of the resin to be blended and the peak temperature of the sound pressure level (that is, the temperature at which the sound insulation is most exerted) substantially match, and the sound insulation and damping material is In order to maximize the damping performance of the sound insulation and damping material in the operating temperature range, combine the resins with different peak temperatures of the loss coefficient according to the operating temperature.
At the same time, it also maximizes the sound insulation of the sound damping material in the operating temperature range.

When the above resins are mixed, due to the magnitude of the interaction between the same kind of molecules and the interaction between different kinds of molecules, various kinds of mixing are possible from a mixed state of molecular order to a state close to phase separation which can be regarded as almost independent phases. The state will be achieved. In the present invention, in order to achieve the above object,
It suffices if it is an intermediate state between both components separated into two phases and a completely uniform one-phase state, that is, a microphase-separated state.
It should be noted that it is preferable to select a resin having a similar solubility parameter δ as the resin to be mixed since the peak value can be adjusted to a predetermined temperature range.

The blending amount of each resin is not particularly limited, but when the blending amount of one resin occupies most of the blending amount of the other resin, the sound insulation and damping material is used. Therefore, the peak temperature of the loss coefficient of 1 moves to the peak temperature side of one resin. On the other hand, when the blending amount of the other resin is larger than that of the one resin, the peak of the loss coefficient of the sound insulating and damping material moves to the peak temperature side of the other resin. In this way, since the peak temperature of the loss coefficient of the sound insulation damping material moves to the peak temperature side of the resin with a large blending amount, the loss coefficient of the sound insulation damping material can be adjusted by appropriately adjusting the blending amount of the resin. The peak temperature of can be made into the target temperature range.

In the above description, the peak temperature of the loss coefficient of the sound-damping and damping material approaches the peak temperature of the loss coefficient of the resin with a large blending amount, depending on the blending ratio of the resins having different peak temperatures of the loss coefficient. As for the content, this also has a similar relationship with respect to sound insulation, and the peak temperature of the sound pressure level of the sound-damping damping material has a large amount depending on the compounding ratio of the resins having different peak temperatures of the sound pressure level. Approaching the peak temperature of the resin.

Examples of at least two kinds of resins having different peak temperatures of the loss coefficient include, for example, di-2-ethylhexyl phthalate (DOP) and dibutyl phthalate (DB).
P), polyvinyl chloride to which a plasticizer such as diisononyl phthalate (DINP) is added in a ratio of 40 parts by weight to 100 parts by weight of the resin (the peak temperature of the loss coefficient is 10 to 2).
A preferable example is a combination of 0 ° C.) and polymethyl methacrylate (peak temperature of loss coefficient is 130 to 150 ° C.).

In addition, as a combination of at least two kinds of resins having different peak temperatures of the loss coefficient, polyvinyl chloride containing the plasticizer (the peak temperature of the loss coefficient is 20) is used.
° C) and ethylene-vinyl acetate copolymer, polyvinyl chloride and ABS resin, polyvinyl chloride and polystyrene,
Polyvinyl chloride and polyethylene, polymethylmethacrylate (peak temperature of loss coefficient is 130-150 ° C) and polyvinylidene fluoride, also polymethylmethacrylate and A
Examples thereof include S resin, polystyrene and polyisoprene.

At least one resin having a partially crosslinked structure is blended with two or more resins having different peak temperatures of the loss factor thus selected. Examples of the resin having a partially crosslinked structure include acrylonitrile-butadiene rubber (NBR), styrene-butadiene rubber (SBR), butadiene rubber (BR), and natural rubber (NBR).
R), isoprene rubber (IR) and the like can be used.

The resin having the partially cross-linked structure acts to widen the peak temperature range of these loss coefficients with respect to the resins having the peak temperatures of the respective loss coefficients as shown in the graphs a and b of FIG. . At the same time, it also acts to widen the peak temperature range of the sound pressure level. That is, by blending the synthetic rubber, the sound damping material has a loss in a wide temperature range from the peak temperature of the graph a to the peak temperature of the graph b as shown in the graphs c, d and e of FIG. It has a coefficient peak temperature. Although not shown in the drawing, the sound insulation also has a peak temperature of the sound pressure level in a wide temperature range from the peak temperature of the graph a to the peak temperature of the graph b.

By mixing a resin having a partially crosslinked structure with a resin having a different peak temperature of the loss coefficient in this manner, the sound insulating and damping material can exhibit sound insulating and damping properties in a wide temperature range. become. Although the reason is not clear, when a resin having a partially crosslinked structure is blended with a resin having a different peak temperature of the loss coefficient, each resin is present in a microphase-separated state in the blend. In this composition, the non-crosslinked portion of the resin having a crosslinked structure is completely compatible with other resins, but the crosslinked portion is not completely compatible, and some of them exist as independent phases from other resins. are doing. Therefore, the loss coefficient of the mixture, in addition to the respective peaks of the compatible phase of the other resin, the unique peak of the phase consisting of the cross-linked portion of the resin having a cross-linked structure, as a result, The peak of the loss factor is flattened,
It is considered that the vibration damping characteristics will be exhibited in a very wide temperature range as the width becomes wider. The addition of the resin having the partially crosslinked structure similarly contributes to flattening the peak of the sound pressure level and widening the area.

The amount of the resin having a partially cross-linked structure is 1 to 50 parts by weight, preferably 15 to 35 parts by weight, based on 100 parts by weight of the resin. The reason is that when the amount of compounding is larger or smaller than this range, sufficient effect can be obtained that the sound insulation and damping material will exhibit sound insulation and damping properties in a wide temperature range. Because you will not be able to.

In this way, by filling the above-mentioned sound-damping and damping agent into the resin matrix in which the resin having the partially crosslinked structure is mixed with the resin having the different peak temperature of the loss coefficient, the sound-damping and damping agent has the property. Excellent sound insulation and vibration control are given to the resin, and the sound insulation and vibration control originally possessed by the resin are dramatically improved, and excellent vibration control and sound insulation are exhibited in a wide temperature range. The effect will be derived.

The above-mentioned resin, resin having a partially crosslinked structure, and sound-damping and damping agent are blended in a predetermined ratio and kneaded by using a Banbury mixer, rolls or the like to obtain the sound-damping and damping material of the present invention. Obtainable. It should be noted that it is preferable to fill the resin with the sound insulation and vibration damping agent at the same time in the process of manufacturing the sound insulation and vibration damping material. Further, when using mica scales as a sound insulation and vibration damping agent, the size of mica scales as described above has a great influence on the vibration damping property of the sound insulation and vibration damping material, and the level of the sound insulating property. You need to be careful not to break it.

The sound insulation and vibration damping material produced in this manner is formed into a shape according to the application and purpose by a calendering method, an extrusion method, or the like, and used as a material for vibration and noise countermeasures for automobiles, interior materials, building materials, etc. Can be used.

Next, the sound insulation and damping material according to claims 13 to 16 will be described. In this sound insulation and damping material, the resin matrix is composed of at least two kinds of resins having different peak temperatures of the loss coefficient and at least one kind of resin having a partially crosslinked structure, and at least one kind of sound insulation is contained in the resin matrix. It is filled with a vibration damping agent and at least one sound insulation and vibration damping accelerator. Regarding the sound insulation and vibration damping material, regarding the resin matrix, the sound insulation and vibration damping imparting agent, the mica scale as the sound insulation and vibration damping imparting agent, the filling amount, and the weight-average flake diameter, the sound insulation and vibration damping materials according to the above-mentioned claims 9 to 12. Since it is the same as the wood, the explanation here is omitted.

As described above, the sound insulating and vibration damping agent such as mica flakes has not only excellent vibration damping properties but also excellent sound insulating properties. By filling this, the sound insulating properties required as a sound insulating and damping material are obtained. In addition, since the vibration damping property is exhibited, basically, a good sound damping material can be obtained by filling only the sound damping agent. However, in fields where extremely high levels of vibration control and noise control are required, such as home appliances, demands for vibration control and noise control are expected to become even higher in the future due to technological development. is expected. In order to meet such requirements, the sound insulation and vibration damping material of the present invention is filled with the sound insulation and vibration damping promoter together with the sound insulation and vibration damping agent.

The sound insulation / vibration promoting agent has a function of further improving the sound insulation and vibration damping property of the sound insulation / vibration imparting agent.
Calcium carbonate, barite, precipitated barium sulfate or the like can be used as the sound insulation and vibration control accelerator. Among them, for example, calcium carbonate as the sound insulation and vibration control promoter can be used by filling the same with the above-mentioned mica flakes to obtain mica flakes. The effect of further improving the sound insulating property and the vibration damping property by the filling of is obtained. As the calcium carbonate, light calcium carbonate or heavy calcium carbonate, which has been widely used as a filler for a sound insulating material, can be used.

It should be noted that mica scales are used as a sound insulation and vibration damping agent, calcium carbonate is used as a sound insulation and vibration damping accelerator, and these are filled in a resin matrix composed of a resin having a different peak temperature of loss coefficient and a resin having a partially crosslinked structure. If you do
The filling amount of these mica scales and calcium carbonate is 10 to 3 mica scales relative to the weight of the sound damping material.
It is preferable that 0% by weight and 70 to 50% by weight of calcium carbonate are filled. The reason is that when the resin weight is out of this range, molding may not be performed, or impact resistance and strength may deteriorate. On the other hand, when the ratio of mica flakes is less than the above range or the ratio of calcium carbonate is more than the above range, sufficient improvement in vibration damping and sound insulation cannot be obtained. Also, if the ratio of mica flakes is higher than the above range, or if the ratio of calcium carbonate is low, it cannot be molded or the amount of mica scales used increases, resulting in an increase in the price of the sound damping material. This is because it causes a problem.

Resins having different peak temperatures of the above loss factors,
A resin having a partially crosslinked structure, a sound insulation and vibration damping imparting agent, and a sound insulation and vibration damping accelerator are blended in a predetermined ratio, and the sound damping and vibration damping material of the present invention is kneaded by using a Banbury mixer, a roll or the like. Obtainable. It should be noted that it is preferable to fill the resin with the sound insulation and vibration damping imparting agent and the sound insulation and vibration damping accelerator at the same time in the process of manufacturing the sound insulation and vibration damping material. Further, when using mica scales as a sound insulation and vibration damping agent, the size of mica scales as described above has a great influence on the vibration damping property of the sound insulation and vibration damping material, and the level of the sound insulating property. You need to be careful not to break it.

The sound-damping and damping material produced in this way is formed into a shape according to the application and purpose by a calendering method, an extrusion method, etc., and is used as a material for vibration and noise countermeasures for automobiles, interior materials, building materials, etc. Can be used.

[0063]

【Example】

Example 1 Polyvinyl chloride to which di-2-ethylhexyl phthalate (DOP) was added at a ratio of 40 parts by weight to 100 parts by weight of polyvinyl chloride (average degree of polymerization of 800 to 1300, manufactured by Suzu Steel Co., Ltd.) was 160 ° C. It is charged into the kneading roll set to, and thereafter, 20% of the weight of the obtained sound insulating and damping material is added.
% By weight of mica scale (clarite mica scale, 60C,
Kuraray Co., Ltd.) was added and kneaded for 13 minutes.

Next, the obtained kneaded product is sandwiched between molds heated to 180 ° C. and heated for 180 seconds, and thereafter, a kneaded product is pressed with a press machine at a pressure of 80 kg · f / cm ² for 30 seconds to obtain 1 m.
Sheet into a thickness of m. The obtained sheet is cut into a size of 67 mm × 9 mm for measuring the loss coefficient and a size of 350 mm × 350 mm for measuring the sound pressure level to obtain a test piece.

Example 2 Two types of test pieces were obtained in the same manner as in Example 1 except that the filling amount of mica scale was 30% by weight with respect to the weight of the sound damping material.

Example 3 Two kinds of test pieces were obtained in the same manner as in Example 1 except that the filling amount of mica scale was 40% by weight based on the weight of the sound damping material.

Example 4 Two kinds of test pieces were obtained in the same manner as in Example 1 except that the filling amount of mica scale was 50% by weight based on the weight of the sound damping material.

Example 5 Two types of test pieces were obtained in the same manner as in Example 1 except that the filling amount of mica scale was 60% by weight with respect to the weight of the sound damping material.

Comparative Example 1: Calcium carbonate (dry heavy calcium carbonate, Super SSS, Maruo Calcium Co., Ltd.) was used in place of the mica flakes in an amount of 20 relative to the weight of the sound damping material.
A test piece was obtained in the same manner as in Example 1 except that the composition was blended in a weight percentage.

Comparative Example 2: A test piece was obtained in the same manner as in Example 1 except that calcium carbonate was blended in a proportion of 40% by weight based on the weight of the sound damping material instead of the mica flakes.

Comparative Example 3: A test piece was obtained in the same manner as in Example 1 except that calcium carbonate was added instead of the mica flakes at a ratio of 60% by weight based on the weight of the sound damping material.

Measurement of Loss Coefficient and Sound Pressure Level: Examples 1 to 1
5 and the test pieces of Comparative Examples 1 to 3 were measured for loss coefficient and sound pressure level. The loss coefficient was measured by processing the data obtained by a dynamic viscoelasticity measuring test device (Rheovibron DDV-25FP, manufactured by Orientec Co., Ltd.) as follows.

From the above device, E ^* (complex modulus) and E
′ (Dynamic elastic modulus), E ″ (loss elastic modulus) and tan δ are obtained. The above device automatically measures dynamic load (ΔF), dynamic displacement (ΔL) and tan δ, and the result Therefore, E ^* is calculated by the following equation: E ^* = ΔF /
S × Lt / ΔL, ΔF: dynamic load, S: cross-sectional area of test piece,
Lt: test piece length, ΔL: dynamic displacement.

From tan δ, it is possible to divide the dynamic elastic modulus and the loss elastic modulus by the following equation using the phase angle δ. tan δ = E ″ / E ′, E ′ = E ^* cos δ, E ″ = E
^* sin δ.

Next, the loss coefficient (η) is calculated from E ″ by the following equation.
To calculate. The loss factor (η) to be calculated is the loss factor of the composite when each test piece is attached to a steel plate having a thickness of 1 mm (unconstrained damping material).

[0076] _{η ≒ 14η 2 (E 2 /} E 1) (h 2 / h 1) 2 η 2 ≒ tanδ = E "2 / E'2, E'2 = E 2 η ≒ 14 (E" 2 / E ₁ ) (h ₂ / h ₁ ) ² η ₂ : loss factor of the test piece alone, E ₁ : elastic modulus of the substrate (2
10 GPa) E _2: Elastic modulus of the test piece, _E'2: dynamic modulus of elasticity of the test piece, E _"2: loss modulus of the test piece, h _2: Thickness of test piece (1.0mm), h _1: Substrate thickness (1.0 mm)

On the other hand, the sound pressure level was measured at 0 ° C. and 20
At each temperature of 40 ° C., 40 ° C. and 60 ° C., as shown in FIG. 3, each test piece 1 was adhered to the steel plate 2, and the noise generated when the golf ball 3 was applied to the non-adhesive surface side of the steel plate 2 was measured. Sound level meter 7 installed at a distance of 1 m on the adhesive surface side of steel plate 2
(LA-210, manufactured by Ono Sokki Co., Ltd.), and the electrical signal was measured by a method of digitizing and reading it with an FFT analyzer 6 (CF-350, manufactured by Ono Sokki Co., Ltd.).

The measurement results of the loss coefficient of each test piece are shown in FIG. 4 (Examples 1, 2, 3, 4, 5) and FIG. 5 (Comparative Examples 1, 2 and 3). The sound pressure level measurement results are shown in FIG. 6 (Example 1), FIG. 7 (Example 2), FIG. 8 (Example 3), FIG. 9 (Example 4), FIG. 10 (Example 5), and FIG. Comparative example 1),
12 (Comparative Example 2) and FIG. 13 (Comparative Example 3).
6 to 13 show the sound pressure level for each frequency of 0 to 10 kHz.

As is clear from the above drawings, when the test piece filled with mica scales was compared with the test piece filled with calcium carbonate which has been widely used as a sound insulating material,
Its sound insulation was far superior to that of calcium carbonate.

Example 6: Polyvinyl chloride (average degree of polymerization: 8
Polyvinyl chloride to which di-2-ethylhexyl phthalate (DOP) was added at a ratio of 40 parts by weight to 100 parts by weight at 160 ° C.
20% by weight of mica scale (Clarite mica scale, 60C, manufactured by Kuraray Co., Ltd.) and 60% by weight of calcium carbonate (dry weight Calcium carbonate, super SS
S, manufactured by Maruo Calcium Co., Ltd.) and kneaded for 13 minutes.

Next, the obtained kneaded product is sandwiched between dies heated to 180 ° C. and heated for 180 seconds, and thereafter, a kneaded product is pressed with a press machine at a pressure of 80 kg · f / cm ² for 30 seconds, and 1 m.
Sheet into a thickness of m. The obtained sheet was cut into a size of 67 mm × 9 mm for measuring the loss coefficient and a size of 350 mm × 350 mm for measuring the sound pressure level to obtain a test piece.

Example 7: A test piece was obtained in the same manner as in Example 6 except that the filling amount of mica scale was 10% by weight and the filling amount of calcium carbonate was 55% by weight with respect to the weight of the sound insulation and vibration damping material. .

Comparative Example 4 A test piece was prepared in the same manner as in Example 6 except that mica scale was not used and calcium carbonate was 80% by weight.

Specimens of Examples 6 and 7 and Comparative Example 4
The loss coefficient and the sound pressure level of each of the test pieces of No. 1 were measured in the same manner as in Examples 1 to 5. The measurement results of the loss coefficient of these test pieces are shown in FIG. On the other hand, the measurement result of the sound pressure level is shown in FIG.

14 and 15, the test pieces of Examples 6 and 7 filled with mica flakes and calcium carbonate had excellent sound insulation and vibration damping properties, and particularly, Example 6 was used.
When compared with the product of Comparative Example 4 in which only calcium carbonate was filled, the product of Example No. 1 was excellent in sound insulation and vibration damping properties, which far exceeded expectations.

Example 8 Polyvinyl chloride in which di-2-ethylhexyl phthalate (DOP) was added at a ratio of 40 parts by weight to 100 parts by weight of polyvinyl chloride (average degree of polymerization: 800 to 1300, manufactured by Suzu Steel Co., Ltd.). 75 parts by weight of polymethyl methacrylate (Sumibec L02, manufactured by Sumitomo Chemical Co., Ltd.)
7.5 parts by weight, acrylonitrile-butadiene rubber (N
BR) (N202S, manufactured by Nippon Synthetic Rubber Co., Ltd.) 25
Parts by weight, based on the weight of the resulting sound-damping and damping material, mica flakes (Clarite mica flakes, 60C, manufactured by Kuraray Co., Ltd.)
Each of the samples prepared in a weight ratio of 50 wt% was charged into a kneading roll set at 160 ° C. in the order of polyvinyl chloride, polymethyl methacrylate, mica scale, and acrylonitrile-butadiene rubber, and kneaded for 13 minutes.

Then, the obtained kneaded product is sandwiched between dies heated to 180 ° C. and heated for 180 seconds, and thereafter, a kneaded product is pressed with a press machine at a pressure of 80 kg · f / cm ² for 30 seconds to obtain 1 m.
Sheet into a thickness of m. The obtained sheet was cut into a size of 67 mm × 9 mm for measuring the loss coefficient and a size of 350 mm × 350 mm for measuring the sound pressure level to obtain a test piece.

Example 9 Polyvinyl chloride in which di-2-ethylhexyl phthalate (DOP) was added at a ratio of 40 parts by weight to 100 parts by weight of polyvinyl chloride (average degree of polymerization: 800 to 1300, manufactured by Suzu Steel Co., Ltd.). 75 parts by weight of polymethyl methacrylate (Sumibec L02, manufactured by Sumitomo Chemical Co., Ltd.)
7.5 parts by weight, acrylonitrile-butadiene rubber (N
BR) (N202S, manufactured by Nippon Synthetic Rubber Co., Ltd.) 25
Parts by weight, based on the weight of the resulting sound-damping and damping material, mica flakes (Clarite mica flakes, 60C, manufactured by Kuraray Co., Ltd.)
20% by weight, and calcium carbonate (dry heavy calcium carbonate, Super SSS, manufactured by Maruo Calcium Co., Ltd.)
Was added to a kneading roll set at 160 ° C. in the order of polyvinyl chloride, polymethylmethacrylate, mica scale, calcium carbonate, and acrylonitrile-butadiene rubber. Test pieces for measuring the loss coefficient and for measuring the sound pressure level were prepared in the same manner as in Example 8 except that the kneading was performed for a minute.

Example 10 ABS resin (Diapet ABS, 3001G, manufactured by Mitsubishi Rayon Co., Ltd.) was used in place of polymethylmethacrylate, and 75 parts by weight / 25 parts by weight of polyvinyl chloride / ABS resin / acrylonitrile-butadiene rubber was used. /17.5
The mica scale (Clarite mica scale, 60
C, manufactured by Kuraray Co., Ltd.) was mixed at a weight ratio of 50% by weight, and each sample was added to a kneading roll set at 160 ° C. in the order of polyvinyl chloride, ABS resin, mica scale, and acrylonitrile-butadiene rubber. Test pieces for measuring the loss coefficient and for measuring the sound pressure level were prepared in the same manner as in Example 8 except that the kneading was performed for 13 minutes.

Example 11 ABS resin (Diapet ABS, 3001G, manufactured by Mitsubishi Rayon Co., Ltd.) was used in place of polymethylmethacrylate, and polyvinyl chloride / ABS resin / acrylonitrile-butadiene rubber was 75 parts by weight / 25 parts by weight. /17.5
The mica scale (Clarite mica scale, 60
C, manufactured by Kuraray Co., Ltd.) and calcium carbonate (dry heavy calcium carbonate, Super SSS, manufactured by Maruo Calcium Co., Ltd.) at a weight ratio of 60% by weight were set to 160 ° C. for each sample. To the kneading roll, polyvinyl chloride, ABS resin, mica scale, calcium carbonate,
And acrylonitrile-butadiene rubber in that order,
Test pieces for measuring the loss coefficient and for measuring the sound pressure level were prepared in the same manner as in Example 8 except that the kneading was performed for 13 minutes.

Example 12 The same procedure as in Example 8 was carried out except that mica scales (Clarite mica scales, 60C, manufactured by Kuraray Co., Ltd.) were blended at a weight ratio of 50% by weight with respect to the weight of the sound damping material. Two kinds of test pieces for measuring the loss coefficient and for measuring the sound pressure level were prepared.

The loss coefficient and the sound pressure level of each of the test pieces of Examples 8 to 12 were measured in the same manner as in Examples 1 to 5. The measurement results of the loss coefficient of these test pieces are shown in FIG. On the other hand, the sound pressure level measurement results are shown in Fig. 1.
7 shows.

From FIG. 16, the loss coefficient of each graph is 0.
Looking at the temperature range of 05 or higher, the temperature of Example 12 is about −10 to about 22 ° C., while that of Example 8 is about −14 ° C. to about 60 ° C., Example 9 About -1
7 ° C. to about 77 ° C., that of Example 10 is about −4 ° C. to about 54 ° C.
C. and that of Example 11 are about -10 to about 53.degree. C., and all have excellent vibration damping properties over a wide temperature range. In particular, the vibration damping property of Example 9 is extremely wide ranging from a low temperature region to a high temperature region, and 6
In the temperature range around 0 ° C., the loss factor is 0.1, which indicates extremely high damping performance.

On the other hand, looking at the sound insulation of each example shown in FIG. 17, the sound pressure level is about 90 dB when the sound insulation and damping material is not used, whereas the sound insulation of Example 12 is 0 ° C
And below 86 dB at each temperature of 20 ° C.
Although it is lower than B, it remains at around 88 dB with a decrease of about 2 dB at temperatures of 40 ° C and 60 ° C, and the sound pressure level is only slightly decreased, and sufficient sound insulation is exhibited. It turns out that not. In Examples 8 and 9, the temperature falls below 86 dB at each temperature, and a decrease of 4 dB or more is observed. Also in Examples 10 and 11, the level was lowered by 4 dB or more except at the temperature of 60 ° C. From this, it is understood that the sound insulating and damping materials of Examples 8 to 11 exhibit excellent sound insulating properties at each temperature. Further, the level of Example 9 is lowered by 6 dB or more at each temperature, and it can be seen that the sound insulating property is excellent in a wide temperature range. Particularly, in the case of 60 ° C., the level is lowered by about 8 dB, which shows extremely high sound insulation.

The sound insulating and damping materials shown in Examples 8 to 11 all exhibit excellent vibration damping and sound insulating properties in a wide temperature range. Also, as compared with Examples 8 and 9, Example 10 was used.
Although the temperature range of 11 and 11 that exhibits good vibration damping and sound insulation is narrow, it has excellent impact resistance because ABS resin is used as resin, and it has excellent impact resistance at room temperature for fans such as fans and ventilation fans. It seems that it is suitable as a material that has both sound insulation and vibration control used in.

[0096]

The sound-damping and damping material according to claim 1 has a resin matrix filled with a sound-damping and damping agent, and has both excellent vibration-damping and sound-insulating properties. It can be handled.

In the sound-damping and damping material according to the second aspect, since the resin matrix is filled with mica scales as a sound-damping and damping agent, it has both excellent damping and sound-insulating properties. Moreover, since one member has both properties, it is not necessary to select and prepare different materials such as sound insulating material, sound absorbing material, and vibration damping material according to the application, and to combine and install these materials. , The handling is very good.

In the sound-damping and damping material according to claim 3, since the mica scale is filled in a weight ratio of 1 to 60% by weight with respect to the weight of the sound-damping and damping material, it has excellent vibration damping properties. In addition to sound insulation, it has sufficient impact resistance and strength.

In the sound insulation and damping material according to claim 4, since the weight average flake diameter of the mica flakes is 90 to 1000 μm, the mica flakes are uniformly dispersed throughout the resin matrix, and the sound damping and damping material is distributed throughout the sound insulation and damping material. Has uniform vibration control and sound insulation.

In the sound-damping / damping material according to claim 5, the resin matrix is filled with a sound-damping / damping-imparting agent for imparting vibration-damping and sound-insulating properties, and further improves its characteristics. Since it is filled with a sound insulation and vibration damping promoter, the sound insulation and damping properties of the sound insulation and damping material are:
It has both excellent vibration damping and sound insulation that have never been seen before. In addition, since this sound insulating and damping material has both properties in one member, different materials such as sound insulating material, sound absorbing material, and vibration damping material are selected and prepared according to the application, and they are combined and attached. It does not require troublesome work and is easy to handle.

According to the sound insulation and damping material of claim 6, in addition to mica scales which provide excellent vibration damping and sound insulating properties in a polyvinyl chloride matrix, calcium carbonate which further improves the properties thereof. Since it is filled with, the sound insulation and vibration control properties of the sound insulation and vibration control material have both excellent vibration control properties and sound insulation properties that far exceed expectations.

According to the sound insulation and damping material of claim 7, mica scale is 10 to 30% by weight and calcium carbonate is 70 to 70% by weight.
Since it is filled at a ratio of 50% by weight, it has not only excellent vibration damping properties and sound insulation properties but also sufficient impact resistance, strength and workability.

In the sound-damping and damping material according to claim 8, since the weight average flake diameter of the mica flakes is 90 to 1000 μm, the mica flakes are uniformly dispersed in the entire resin matrix, and the sound-damping and damping material is entirely dispersed. Has uniform vibration control and sound insulation.

In the sound insulation and damping material according to the ninth aspect, at least two kinds of resins having different peak temperatures of the loss coefficient are blended with a resin having a partially crosslinked structure to suppress vibration. Since it is filled with a sound insulation and vibration damping agent that imparts sound insulation and
It has both excellent vibration damping and sound insulation over a wide temperature range, from low temperature to normal temperature, or from low temperature to high temperature.

In the sound insulation and damping material according to claim 10,
By using mica scales as a sound insulation and vibration damping agent, the vibration damping and sound insulating properties are further improved.

According to the sound insulation and damping material of claim 11,
1 to 60% by weight of mica scale with respect to the weight of the sound damping material
Since it is filled in a weight ratio of, it has sufficient vibration resistance and sound insulation, as well as sufficient impact resistance and strength.

According to the sound insulation and damping material of claim 12,
Weight average flake diameter of mica scale is 90 to 1000 μm
Therefore, the mica flakes are uniformly dispersed in the entire resin matrix, and the sound insulating and damping material has uniform damping and sound insulating properties.

In the sound insulation and damping material according to claim 13,
At least two kinds of resins having different peak temperatures of the loss coefficient are mixed with a resin having a partially crosslinked structure, and a resin matrix is filled with a sound-damping / damping-imparting agent for imparting vibration-damping and sound-insulating properties. In addition, since it is filled with a sound insulation and vibration damping agent that has the function of further improving its characteristics, it has both excellent vibration damping and sound insulating properties over a wide temperature range, and at the same time, its sound insulating and vibration damping properties. The performance is dramatically improved as compared with the case where only the sound insulation and vibration imparting agent is used.

According to the sound insulation and damping material of claim 14,
In addition to mica phosphorus pieces as a sound insulation and vibration damping agent that imparts excellent vibration damping and sound insulation properties, calcium carbonate is filled in the matrix of polyvinyl chloride as a sound insulation and vibration damping promoter that further improves its properties. Therefore, the sound insulation and damping properties of the sound insulation and damping material have both excellent vibration damping and sound insulating properties far beyond expectations.

In the sound insulation and damping material according to claim 15,
10-30% by weight of mica scale and 70% of calcium carbonate
Since it is filled at a ratio of up to 50% by weight, it has not only excellent vibration damping properties and sound insulation properties but also sufficient impact resistance, strength and workability.

According to the sound insulation and damping material of claim 16,
Weight average flake diameter of mica scale is 90 to 1000 μm
Therefore, the mica flakes are uniformly dispersed in the entire resin matrix, and the sound insulating and damping material has uniform damping and sound insulating properties.

[Brief description of drawings]

FIG. 1 is a graph showing sound pressure levels of a mica scale-filled sample and a calcium carbonate-filled sample.

FIG. 2 is a graph showing the relationship between temperature and loss factor for two types of resins having different peak temperatures of loss factor and those in which a resin having a partially crosslinked structure is mixed.

FIG. 3 is a schematic diagram showing an apparatus for measuring a sound pressure level.

FIG. 4 is a graph showing the loss coefficient at each temperature of each test piece of Examples 1, 2, 3, 4, and 5.

FIG. 5 is a graph showing the loss coefficient at each temperature of the test pieces of Comparative Examples 1, 2, and 3.

FIG. 6 is a graph showing the sound pressure level of the test piece of Example 1.

FIG. 7 is a graph showing the sound pressure level in the test piece of Example 2.

FIG. 8 is a graph showing the sound pressure level of the test piece of Example 3.

FIG. 9 is a graph showing the sound pressure level of the test piece of Example 4.

FIG. 10 is a graph showing the sound pressure level of the test piece of Example 5.

11 is a graph showing the sound pressure level of the test piece of Comparative Example 1. FIG.

FIG. 12 is a graph showing the sound pressure level of the test piece of Comparative Example 2.

FIG. 13 is a graph showing the sound pressure level of the test piece of Comparative Example 3.

FIG. 14 is a graph showing the loss coefficient of each test piece of Examples 6 and 7 and Comparative Example 4 at each temperature.

FIG. 15 is a graph showing the sound pressure levels of the test pieces of Examples 6 and 7 and Comparative Example 4.

16 is a graph showing the loss coefficient at each temperature of each test piece of Examples 8, 9, 10, 11, and 12. FIG.

FIG. 17 is a graph showing sound pressure levels of test pieces of Examples 8, 9, 10, 11, and 12.

[Explanation of symbols]

 1 ... Test piece 2 ... Steel plate

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] March 9, 1995

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0051

[Correction method] Change

[Correction content]

The resin having the partially cross-linked structure acts to widen the peak temperature range of these loss coefficients with respect to the resins having the peak temperatures of the respective loss coefficients as shown in the graphs a and b of FIG. . At the same time, it also widens the range of peak temperature of sound pressure level. In other words, it has a partially crosslinked structure.
By blending the resin , the sound damping material has a loss coefficient in a wide temperature range from the peak temperature of graph a to the peak temperature of graph b as shown in graphs c, d and e of FIG. Will have a peak temperature. Although not shown in the drawing, the sound insulation also has a peak temperature of the sound pressure level in a wide temperature range from the peak temperature of the graph a to the peak temperature of the graph b.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location F16F 15/02 Q 9138-3J G10K 11/162 // B32B 27/18 J 9349-4F 27/20 Z 9349-4F (72) Inventor Yasuyuki Ohira 7-148, Hachiken, Ginan-cho, Hashima-gun, Gifu Prefecture CSI Corporation (72) Inventor Koji Kobayashi 7-148, Hachiken, Ginan-cho, Hashima-gun, Gifu Prefecture

Claims (16)

[Claims] 1. A sound insulation and damping material, characterized in that a resin matrix is filled with at least one sound insulation and damping agent. 2. The sound damping material according to claim 1, wherein the sound damping agent is mica flakes. 3. The sound insulating and damping material according to claim 2, wherein mica scale is filled in a proportion of 1 to 60% by weight based on the total weight of the sound insulating and damping material. 4. The weight average flake diameter of mica flakes is 90-.
It is 1000 micrometers, It is characterized by the above-mentioned.
Sound insulation and damping material described. 5. A sound insulation and damping material, characterized in that a resin matrix is filled with at least one sound insulation and damping agent and at least one sound insulation and damping accelerator. 6. The sound insulation and vibration damping material according to claim 5, wherein the sound insulation and vibration damping imparting agent is mica flakes, and the sound insulation and vibration damping accelerator is calcium carbonate. 7. The mica scale and the calcium carbonate are each 10 to 30% by weight with respect to the total weight of the sound damping material.
The sound insulation and damping material according to claim 6, wherein the sound insulation and damping material is filled in a proportion of 70 to 50% by weight. 8. The weight average flake diameter of mica flakes is 90 to.
It is 1000 micrometers, It is characterized by the above-mentioned.
Sound insulation and damping material described. 9. A resin matrix is composed of at least two kinds of resins having different peak temperatures of loss coefficients and at least one kind of resin having a partially crosslinked structure, and at least one kind of sound insulation damping is provided in the resin matrix. A sound insulation and damping material characterized by being filled with an agent. 10. The sound damping material according to claim 9, wherein the sound damping agent is mica flakes. 11. The sound insulating and damping material according to claim 10, wherein the mica scale is filled in a proportion of 1 to 60% by weight based on the total weight of the sound insulating and damping material. 12. The weight average flake diameter of mica flakes is 90.
The sound insulation and damping material according to claim 10 or 11, wherein the sound insulation and damping material has a thickness of about 1000 µm. 13. A resin matrix comprising at least two kinds of resins having different peak temperatures of a loss coefficient and at least one kind of resin having a partially crosslinked structure, and at least one kind of sound insulation and vibration damping in the resin matrix. A sound insulation and damping material, characterized in that it is filled with an agent and at least one sound insulation and damping agent. 14. The sound insulation and vibration damping agent is mica flakes,
The sound insulation and vibration damping material according to claim 13, wherein the sound insulation and vibration damping promoter is calcium carbonate. 15. The mica scale and the calcium carbonate are each 10 to 30% by weight based on the total weight of the sound damping material.
The sound insulation and damping material according to claim 14, wherein the sound insulation and damping material is filled in a proportion of 70 to 50% by weight. 16. The weight average flake diameter of mica flakes is 90.
The sound insulation and damping material according to claim 14 or 15, characterized in that