JP2012236907A - Vibration-damping and sound-insulating material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vibration-damping and sound-insulating material exhibiting excellent vibration-damping properties and sound-insulating properties.SOLUTION: The vibration-damping and sound-insulating material contains a polyester resin (X) composed of constituent units of dicarboxylic acid component and constituent units of diol component, and an inorganic material having 3-300 μm of an average particle diameter and ≥3.5 of the specific gravity. The ratio [(A+B)/(A+B)] of the total of the number (A) of the constituent units of the dicarboxylic acid component having odd number of the carbon atoms in the main chain, and the number (B) of the constituent units of the diol component having odd number of the carbon atoms in the main chain of the polyester resin (X), to the total of the number (A) of the constituent units of the whole dicarboxylic acid components and the number (B) of the constituent units of the whole diol components is within the range of 0.5-1.0. Further, the proportion of the polyester resin (X) is 10-70 mass%, and the proportion of the inorganic material having 3-300 μm of the average particle diameter and ≥3.5 of the specific gravity is 30-90 mass%.

Description

  The present invention relates to a vibration and sound insulation material that exhibits vibration damping and sound insulation.

  Molding used in parts and housings for PCs, OA equipment, AV equipment, mobile phones and other electrical / electronic equipment, optical equipment, precision equipment, toys, home and office electrical appliances, as well as automobile, aircraft, and ship parts In addition to general material properties such as impact resistance, heat resistance, strength, and dimensional stability, the material is required to have vibration damping properties (a property of absorbing vibration energy). The vibration damping property depends largely on the shape of the molded product, but also depends on the elastic modulus and damping property of the material used. It is extremely difficult to satisfy all of these required performances with a single material, so multiple materials can be combined, such as blending various polymers, combining organic and inorganic materials, and laminating different materials. And then used. In particular, since the elastic modulus and the vibration damping property are mutually contradictory properties, it is necessary to use a combination of a material having a high elastic modulus and a vibration damping material.

  Conventionally, a soft vinyl chloride resin in which a plasticizer is added to a vinyl chloride resin is known as a material that absorbs vibration energy such as a vibration damping material. In this soft vinyl chloride resin, vibration energy is consumed as frictional heat inside the resin so that vibration energy is attenuated, but sufficient vibration energy cannot be absorbed and attenuated.

  Further, rubber materials such as butyl rubber and NBR butadiene acrylonitrile rubber are often used as vibration damping materials that are excellent in terms of workability, mechanical strength, and material cost. However, these rubber materials have the most excellent damping properties (vibration energy transmission insulation performance or transmission relaxation performance) among general polymer materials, but rubber materials alone can be used as damping materials. Vibration control is low. For example, a vibration-damping structure for buildings and equipment is combined with a laminate of rubber material and steel plate, or a lead core and oil damper that absorbs vibration energy by plastic deformation. It was used in a composite form called a damping structure.

  The rubber material as a conventional vibration damping material cannot be used alone as described above, and must be combined, so the vibration damping structure is inevitably complicated. The rubber material itself has been required to have high vibration damping properties.

  Further, as a vibration damping material, a polyester resin composition having a portion where the number of carbon atoms between ester bonds in the main chain is an odd number is disclosed (Patent Document 1). This polyester resin composition has excellent damping performance near room temperature and is a promising material as a damping material, but it does not have sound insulation and is used to suppress vibrations that contain both solid and air vibrations. There is a problem that it is difficult.

  On the other hand, it is disclosed that sound insulation can be imparted by mixing an inorganic substance such as a metal having a high specific gravity or a metal oxide (Patent Document 2). This sound insulating material uses an inorganic substance having a specific gravity of 4.0 or more and has an excellent sound insulating performance, but has a problem that the loss factor is low and the vibration damping performance is inferior.

JP 2006-052377 A JP 58-90700 A

  An object of the present invention is to provide a vibration damping and sound insulating material that exhibits excellent vibration damping and sound insulating properties.

As a result of intensive studies to achieve the above object, the present inventors have obtained a vibration damping and sound insulating material that exhibits excellent vibration damping properties and sound insulation properties by blending a specific polyester resin with an inorganic substance having a large specific gravity. I found out that However, depending on the inorganic substance to be blended, it has been found that there is a problem that swelling occurs when the vibration-damping and sound-insulating material is formed into a sheet. As a result of further investigation, an inorganic substance with a large specific gravity whose average particle diameter is a specific value is found. It has been found that the problem of blistering can be solved by using it, and the present invention has been achieved.
That is, the present invention is a vibration and sound insulation material comprising a polypolyester resin (X) comprising a dicarboxylic acid component structural unit and a diol component structural unit and an inorganic substance having an average particle size of 3 to 300 μm and a specific gravity of 3.5 or more. The number of dicarboxylic acid component constituent units in which the number of carbon atoms in the main chain is odd relative to the total amount of all dicarboxylic acid component constituent units (A ₀ ) and all diol component constituent units (B ₀ ) of the polyester resin (X) The ratio [(A ₁ + B ₁ ) / (A ₀ + B ₀ )] of the total amount of (A ₁ ) and the number of diol component structural units (B ₁ ) having an odd number of carbon atoms in the main chain is 0.5 to It is within the range of 1.0, the proportion of the polyester resin (X) is 10 to 70 mass%, the proportion of the inorganic substance having an average particle diameter of 3 to 300 μm and a specific gravity of 3.5 or more is 30 to 90 mass%. The present invention relates to a vibration damping and sound insulating material.

  According to the vibration damping and sound insulating material of the present invention, it is possible to provide good vibration damping and sound insulating properties.

The present invention is described in detail below.
The vibration-damping and sound-insulating material of the present invention contains a polyester resin (X) composed of a dicarboxylic acid component constituent unit and a diol component constituent unit and an inorganic substance having an average particle diameter of 3 to 300 μm and a specific gravity of 3.5 or more.
The polyester resin (X) is composed of a dicarboxylic acid component constitutional unit and a diol component constitutional unit, in the main chain with respect to the total amount of all dicarboxylic acid component constitutional units (A ₀ ) and all diol component constitutional units (B ₀ ). The ratio of the total amount of dicarboxylic acid component structural units (A ₁ ) having an odd number of carbon atoms and the number of diol component structural units (B ₁ ) having an odd number of carbon atoms in the main chain [(A ₁ + B ₁ ) / (A ₀ + B ₀ )] is in the range of 0.5 to 1.0.
Here, “the number of carbon atoms in the main chain of the dicarboxylic acid component structural unit (or diol component structural unit)” is sandwiched between one ester bond [—C (═O) —O—] and the next ester bond. The number of carbon atoms existing on the shortest path along the main chain of the polyester resin in the monomer unit. In addition, the number of structural units of each component can be calculated from a ratio of integrated values of ¹ H-NMR spectrum measurement results described later.

In the present invention, the dicarboxylic acid component in which the number of carbon atoms in the main chain is an odd number with respect to the total amount of the total number of dicarboxylic acid component structural units (A ₀ ) and the total number of diol component structural units (B ₀ ) of the polyester resin (X) The ratio [(A ₁ + B ₁ ) / (A ₀ + B ₀ )] of the total amount of the number of structural units (A ₁ ) and the number of diol component structural units (B ₁ ) having an odd number of carbon atoms in the main chain is 0 The range is from 0.5 to 1.0, and the range from 0.7 to 1.0 is preferable. Moreover, as for the carbon atom number in the principal chain of said dicarboxylic acid component structural unit, and the carbon atom number in the principal chain of a diol component structural unit, 1, 3, 5, 7, 9 are preferable.

  Examples of the dicarboxylic acid component structural unit having an odd number of carbon atoms in the main chain of the polyester resin (X) include isophthalic acid, malonic acid, glutaric acid, pimelic acid, azelaic acid, undecanedioic acid, brassylic acid, 1 , 3-cyclohexanedicarboxylic acid and the like. Among these, structural units derived from isophthalic acid, azelaic acid, and 1,3-cyclohexanedicarboxylic acid are preferable, and structural units derived from isophthalic acid and azelaic acid are more preferable. The polyester resin (X) may contain one or more structural units derived from the dicarboxylic acid. Moreover, when 2 or more types of structural units are included, it is preferable to include a structural unit derived from isophthalic acid and azelaic acid.

  Examples of diol component structural units having an odd number of carbon atoms in the main chain of the polyester resin (X) include 1,3-propanediol, 1,3-butanediol, 2-methyl-1,3-propanediol. 1,3-pentanediol, 1-methyl-1,3-butanediol, 2-methyl-1,3-butanediol, neopentyl glycol, 1,3-hexanediol, 3-methyl-1,3-butane Diol, 1,5-pentanediol, 2-methyl-1,5-pentanediol, 3-methyl-1,5-pentanediol, 1,5-hexanediol, 2-ethyl-1,5-pentanediol, 2 -Propyl-1,5-pentanediol, metaxylene glycol, 1,3-cyclohexanediol, 1,3-bis (hydroxymethyl) cyclohexane It includes structural units derived from at etc.. Among them, derived from 1,3-propanediol, 1,3-butanediol, 2-methyl-1,3-propanediol, neopentyl glycol, 1,5-pentanediol, metaxylene glycol and 1,3-cyclohexanediol The structural unit derived from 1,3-propanediol, 1,5-pentanediol, 2-methyl-1,3-propanediol, 1,3-butanediol and neopentyl glycol is more preferable. The polyester resin (X) may contain one or more structural units derived from the diol.

Furthermore, the molding material of the present invention has a ratio of the number of dicarboxylic acid component constituent units (A ₁ ) in which the number of carbon atoms in the main chain is odd to the total number of dicarboxylic acid component constituent units (A ₀ ) of the polyester resin (X). preferably _(a 1 / _{a 0)} is in the range of 0.5 to 1.0, more preferably the ratio _(a 1 / a ₀₎ is in the range of 0.7 to 1.0.
In the vibration damping material of the present invention, the ratio (B ₁ / B ₀ ) of the number of structural units (B ₁ ) derived from the diol to the total number of structural units (B ₀ ) of the diol component of the polyester resin (X) is 0.00. is preferably in the range of 5 to 1.0, more preferably the ratio _(B 1 / B ₀₎ is in the range of 0.7 to 1.0.

  In the molding material of the present invention, the polyester resin (X) has (1) an intrinsic viscosity of 0.2 to 2.0 dL / g measured at 25 ° C. in a mixed solvent of 40/60 mass ratio of trichloroethane / phenol. And (2) the calorific value of the crystallization exothermic peak at the time of cooling measured by a differential scanning calorimeter is preferably 5 J / g or less. By satisfying the above (1) and (2), higher vibration damping can be obtained.

  The polyester resin (X) used in the present invention may contain other structural units to the extent that the effects of the present invention are not impaired in addition to the above-described dicarboxylic acid component structural units and diol component structural units. There are no particular restrictions on the type, and all dicarboxylic acids and esters thereof that can form polyester resins (referred to as "other dicarboxylic acids"), diols (referred to as "other diols") or The structural unit derived from hydroxycarboxylic acid and its ester (this is called "hydroxycarboxylic acids") can be included.

Examples of other dicarboxylic acids include terephthalic acid, orthophthalic acid, 2-methylterephthalic acid, 2,6-naphthalenedicarboxylic acid, succinic acid, adipic acid, suberic acid, sebacic acid, dodecanedioic acid, 1,4-cyclohexanedicarboxylic acid Acid, decalin dicarboxylic acid, norbornane dicarboxylic acid, tricyclodecane dicarboxylic acid, pentacyclododecanedicarboxylic acid, isophorone dicarboxylic acid, 3,9-bis (2-carboxyethyl) -2,4,8,10-tetraoxaspiro [ 5.5] Dicarboxylic acid or dicarboxylic acid ester such as undecane; trivalent or higher polyvalent carboxylic acid such as trimellitic acid, trimesic acid, pyromellitic acid, tricarballylic acid, or derivatives thereof.

Examples of other diols include ethylene glycol, 1,2-propylene glycol, 2-methyl-1,2-propanediol, 1,4-butanediol, 1,6-hexanediol, 2,5- Aliphatic diols such as hexanediol, diethylene glycol, and triethylene glycol; polyether compounds such as polyethylene glycol, polypropylene glycol, and polybutylene glycol; trihydric or higher polyhydric alcohols such as glycerin, trimethylolpropane, and pentaerythritol; 1,3-cyclohexanedimethanol, 1,4-cyclohexanedimethanol, 1,2-decahydronaphthalene diethanol, 1,3-decahydronaphthalene diethanol, 1,4-decahydronaphthalene diethanol, 1,5- Big Dronaphthalene diethanol, 1,6-decahydronaphthalene diethanol, 2,7-decahydro naphthalene diethanol, tetralin dimethanol, norbornane dimethanol, tricyclodecane dimethanol, 5-methylol-5-ethyl-2- ( 1,1-dimethyl-2-hydroxyethyl) -1,3-dioxane, pentacyclododecanedimethanol, 3,9-bis (1,1-dimethyl-2-hydroxyethyl) -2,4,8,10- Alicyclic diols such as tetraoxaspiro [5.5] undecane; 4,4 ′-(1-methylethylidene) bisphenol, methylenebisphenol (bisphenol F), 4,4′-cyclohexylidenebisphenol (bisphenol Z) 4,4′-sulfonylbisphenol (bisphenol) S) and other alkylene oxide adducts of bisphenols; alkylene oxide addition of aromatic dihydroxy compounds such as hydroquinone, resorcin, 4,4'-dihydroxybiphenyl, 4,4'-dihydroxydiphenyl ether, 4,4'-dihydroxydiphenylbenzophenone Such as things.

Examples of hydroxycarboxylic acids include hydroxybenzoic acid, dihydroxybenzoic acid, hydroxyisophthalic acid, hydroxyacetic acid, 2,4-dihydroxyacetophenone, 2-hydroxyhexadecanoic acid, 12-hydroxystearic acid, 4-hydroxyphthalic acid, 4,4 Examples include '-bis (p-hydroxyphenyl) pentanoic acid and 3,4-dihydroxycinnamic acid.

  There is no restriction | limiting in particular in the method of manufacturing polyester resin (X) used by this invention, A conventionally well-known method is applicable. In general, it can be produced by polycondensing monomers as raw materials. For example, a melt polymerization method such as a transesterification method or a direct esterification method or a solution polymerization method can be used. As the transesterification catalyst, esterification catalyst, etherification inhibitor, polymerization catalyst used in the polymerization, various stabilizers such as a heat stabilizer and a light stabilizer, polymerization regulators and the like can be used. Compounds containing metals such as manganese, cobalt, zinc, titanium and calcium as transesterification catalysts, compounds containing metals such as manganese, cobalt, zinc, titanium and calcium as esterification catalysts, and amines as etherification inhibitors Examples thereof include compounds. As the polycondensation catalyst, compounds containing metals such as germanium, antimony, tin, titanium, such as germanium (IV) oxide; antimony (III) oxide, triphenylstibine, antimony (III) acetate; tin (II) oxide; titanium ( Examples thereof include titanic acid esters such as IV) tetrabutoxide, titanium (IV) tetraisopropoxide, and titanium (IV) bis (acetylacetonato) diisopropoxide. It is also effective to add various phosphorus compounds such as phosphoric acid, phosphorous acid, and phenylphosphonic acid as heat stabilizers. In addition, a light stabilizer, an antistatic agent, a lubricant, an antioxidant, a release agent, and the like may be added. In addition to the dicarboxylic acid from which the dicarboxylic acid component structural unit is derived, the dicarboxylic acid component used as a raw material may be a dicarboxylic acid derivative such as a dicarboxylic acid ester, a dicarboxylic acid chloride, an active acyl derivative, or a dinitrile. it can.

The proportion of the polyester resin (X) in the vibration damping and sound insulating material of the present invention is 10 to 70% by mass, preferably 10 to 50% by mass, more preferably 10 to 30% by mass, and particularly preferably 12 to 20%. % By mass.
By setting the mass ratio of the polyester resin (X) in the vibration-damping and sound-insulating material as described above, the vibration-damping and sound-insulating material having excellent moldability and excellent vibration-damping properties and sound-insulating properties can be obtained.

The vibration damping and sound insulating material of the present invention contains 30 to 90% by mass of an inorganic substance having an average particle diameter of 3 to 300 μm and a specific gravity of 3.5 or more. The specific gravity of the inorganic substance is preferably 4.0 or more.
Examples of the inorganic substance having a specific gravity of 3.5 or more used in the present invention include simple metals such as iron, lead, molybdenum, copper and zinc, or compounds thereof such as iron oxide (ferrous iron, ferric iron, four Iron oxide (trioxide), lead oxide, copper oxide (cuprous and cupric), zinc oxide, molybdenum oxide and other inorganic materials such as barium sulfate, etc. Barium sulfate is preferable because of its influence on the surface.

  If the average particle diameter of the inorganic material having a specific gravity of 3.5 or more in the vibration damping and sound insulating material of the present invention is small, blisters are generated on the sheet surface. Therefore, in the present invention, an inorganic substance having an average particle diameter of 3 to 300 μm and a specific gravity of 3.5 or more is used. When the average particle diameter of an inorganic substance having a specific gravity of 3.5 or more is 3 to 300 μm, no swelling occurs and a sheet having a good appearance is obtained, but it is preferably 3 to 200 μm. Here, the average particle diameter is a value measured by an X-ray transmission type particle size distribution measuring device Sedigraph.

  When the content ratio of the inorganic substance having a specific gravity of 3.5 or more in the vibration damping and sound insulating material of the present invention is increased, the sound insulating property is also increased. In the present invention, the content of an inorganic substance having a specific gravity of 3.5 or more is 30 to 90% by mass, preferably 40 to 80% by mass, more preferably 50 to 75% by mass, as a vibration damping and sound insulating material, from the balance of physical properties. is there.

  The vibration-damping and sound-insulating material of the present invention can be obtained by mixing polyester resin (X) and an inorganic substance having an average particle diameter of 3 to 300 μm and a specific gravity of 3.5 or more, and a known method can be used as the mixing method. . For example, the method of melt-mixing using apparatuses, such as a hot roll, a kneader, a Banbury mixer, an intermixer, a twin-screw kneader, an extruder, is mentioned. Among the melt mixing methods, it is preferable to use a batch type mixing apparatus. In particular, mixing with any one of a kneader, a Banbury mixer, and an intermixer is preferable because the kneading time can be freely adjusted and the dispersion state of the resin composition becomes good. In addition, addition methods, such as other additives, addition order, etc. are not specifically limited.

  Mica scales can be blended with the vibration damping and sound insulating material of the present invention for the purpose of further improving vibration energy absorption. Although the kind of mica scale is not specifically limited, White mica which is a scale-like mica with a high vibration energy absorption effect is preferable. Moreover, since the dispersed mica flakes are easily oriented inside the vibration damping and sound insulating material, the average particle diameter of the mica flakes in the vibration damping and sound insulating material of the present invention is preferably 25 to 500 μm. In order to obtain a vibration damping and sound insulating material having particularly high vibration damping performance, it is preferable that the ratio of mica scales in the vibration damping and sound insulating material is 10 to 30% by mass.

  The vibration-damping and sound-insulating material of the present invention is a vibration-damping and sound-insulating material containing a polyester resin (X) and an inorganic substance having an average particle diameter of 3 to 300 μm and a specific gravity of 3.5 or more. Depending on one or more additives, for example, dispersants, compatibilizers, surfactants, antistatic agents, lubricants, plasticizers, flame retardants, crosslinking agents, antioxidants, anti-aging agents, weathering agents, heat resistance Agents, processing aids, brighteners, colorants (pigments, dyes), foaming aids, foaming aids, conductive materials, inorganic fillers and the like can be added as long as the effects of the present invention are not impaired.

  The vibration-damping and sound-insulating material of the present invention includes parts and housings for personal computers, OA equipment, AV equipment, mobile phones and other electrical / electronic equipment, optical equipment, precision equipment, toys, home / office electrical products, automobiles, aircraft It can be suitably used for parts such as ships.

Examples are shown below, but the present invention is not limited to the following examples.
The polyester resin (X) and the vibration damping and sound insulation material were evaluated by the following methods.
(1) Molar ratio of each structural unit of polyester resin polyester: [(A ₁ + B ₁ ) / (A ₀ + B ₀ )], (A ₁ / A ₀ ), (B ₁ / B ₀ ): 400 MHz- ¹ H -It calculated from the ratio of the integral value of a NMR spectrum measurement result.

(2) Intrinsic viscosity ([η]) of the polyester resin (X):
The intrinsic viscosity ([η]) of the polyester resin (X) is obtained by dissolving the polyester resin in a mixed solvent of trichloroethane / phenol = 40/60 (mass ratio) and keeping it at 25 ° C., and using a Canon Fenceke viscometer. Measured.

(3) Calorific value (ΔHc) of crystallization exothermic peak when the temperature of polyester resin (X) is lowered:
The calorific value (ΔHc) of the crystallization exothermic peak when the polyester resin (X) was cooled was measured using a DSC / TA-50WS type differential scanning calorimeter manufactured by Shimadzu Corporation. About 10 mg of a sample is put in an aluminum non-sealed container, heated in a nitrogen gas stream (30 ml / min), heated to 280 ° C. at a heating rate of 20 ° C./min, held at 280 ° C. for 1 minute, and then 10 ° C./min. It calculated | required from the area of the exothermic peak which appears when it falls at the temperature fall rate.

(4) Loss factor:
A sample (damping and sound insulation material) mixed by a kneader was molded at 100 ° C. by a hot press to obtain a sheet having a thickness of 2 mm. The obtained sheet was cut out to 10 mm × 150 mm to obtain a test piece, which was thermocompression-bonded at 50 ° C. on a 1 mm-thick substrate (aluminum alloy 5052 material) or a two-component curable epoxy adhesive (manufactured by Cemedine Co., Ltd.). , Trade name: Cemedine SG-EPO, EP008) to produce a non-restrained vibration damping material. Using the loss factor measuring device (manufactured by Ono Sokki Co., Ltd.) for the obtained unconstrained damping material, the loss factor at the 500 Hz anti-resonance point by the central vibration method under the condition of the measurement temperature range of 0 to 80 ° Was measured. The damping performance was evaluated by comparing the loss coefficients at 20 ° C. among the loss coefficients obtained in the above measurement temperature range. Note that the greater the loss factor, the higher the damping performance.

(5) Sound transmission loss:
The sheet obtained in the same manner as in (4) was cut out to 300 mm × 300 mm to form a test piece, and a two-component curable epoxy adhesive (trade name, manufactured by Cemedine Co., Ltd.) on a 1 mm thick substrate (aluminum alloy 5052 material). : Cemedine SG-EPO, EP008) to prepare a test piece, and the sound transmission loss (dB) of 125 Hz to 16 KHz was measured. The measurement temperature is 23 ° C. In addition, sound insulation property is so high that sound transmission loss is large.

(6) Balloon:
The appearance of the obtained sheet was observed in the same manner as in (4), and ○ (no blistering, good appearance), Δ (slightly blistered, slightly bad appearance). It was evaluated as x (with swelling and poor appearance).

Example 1
A polyester production apparatus with an internal volume of 30 liters (L) equipped with a packed tower type rectification tower, a stirring blade, a partial condenser, a full condenser, a cold trap, a thermometer, a heating device, and a nitrogen gas introduction pipe was mixed with isophthalic acid ( 9950g (60.3 mol) manufactured by AG International Chemical Co., Ltd., azelaic acid (trade name: EMEROX 1144, manufactured by Cognis), this product contains 93.3 mol% azelaic acid, and the total amount of dicarboxylic acid is 99.97%) 5376 g (29.7 mol) and 2-methyl-1,3-propanediol (manufactured by Dalian Chemical Industry Co., Ltd.) 14600 g (162 mol) were added, and 225 under normal pressure and nitrogen atmosphere. The temperature was raised to ° C and the esterification reaction was carried out for 3.0 hours. After the reaction conversion rate of isophthalic acid and azelaic acid is 85 mol% or more while monitoring the amount of condensed water distilled off, 14.3 g of titanium (IV) tetrabutoxide monomer (manufactured by Wako Pure Chemical Industries, Ltd.) (The concentration of titanium with respect to the total mass of the initial condensation reaction product excluding the mass of condensed water from the total mass of charged raw materials is 70.5 ppm) is added, and the temperature is gradually increased and the pressure is reduced, whereby 2-methyl-1,3-propane The polycondensation reaction was finally performed at 240 to 250 ° C. and 0.4 kPa or less while extracting the diol out of the system. The reaction was terminated when the viscosity of the reaction mixture and the stirring torque gradually increased and reached an appropriate viscosity or when distillation of 2-methyl-1,3-propanediol was stopped.
Properties of the obtained polyester resin are [η] = 0.71 (dL / g), ΔHc = 0 (J / g), ¹ H-NMR [400 MHz, CDCl ₃ , internal standard TMS): δ (ppm) = _{7.5~8.9 (Ph- H, 4H);} 3.5~4.6 (-C H 2 -CH (CH 3) -C H 2 -, 6H); 1.0~2.6 ( _{-CH 2 C H (CH 3)} CH 2 -, - CH 2 CH (C H 3) CH 2 -, - CO (C H 2) 7 CO-, was 13H].
This polyester resin [(A ₁ + B ₁ ) / (A ₀ + B ₀ ) = 1.0; (A ₁ / A ₀ ) = 1.0; (B ₁ / B ₀ ) = 1.0] 14.80 mass %, Mica scales (manufactured by Yamaguchi Mica Co., Ltd., trade name: CS-060DC; average particle size 200 μm, specific gravity 2.7 to 3.1), 18.45% by mass, carbon powder (manufactured by Ketjen Black International Co., Ltd .: Ket CHENBLACK EC300J) 0.25% by mass, barium sulfate (manufactured by Nippon Solvay Co., Ltd .: G grade; average particle size 4.0 μm, specific gravity 4.4) 66.5% by mass was kneaded using a kneader to suppress vibration and sound insulation Obtained material. Table 1 shows the physical properties of the obtained vibration damping and sound insulating material.

Example 2
14.80% by mass of the polyester resin used in Example 1, mica scales (manufactured by Yamaguchi Mica Co., Ltd., trade name: CS-060DC; average particle size 200 μm, specific gravity 2.7 to 3.1) 17.25% by mass, Carbon powder (Ketjen Black International Co., Ltd .: Ketjen Black EC300J) 0.25 mass%, Barium sulfate (Nihon Solvay Co., Ltd .: G grade; average particle size 4.0 μm, specific gravity 4.4) 63.50 mass %, Bromine-based flame retardant (saytex8010 manufactured by Albermarle) 3.00 mass% and Sb2O3 1.20 mass% were kneaded using a kneader to obtain a vibration damping and sound insulating material. Table 1 shows the physical properties of the obtained vibration damping and sound insulating material.

Example 3
14.80% by mass of polyester resin used in Example 1, mica scales (manufactured by Yamaguchi Mica Co., Ltd., trade name: CS-060DC; average particle size 200 μm, specific gravity 2.7 to 3.1) 12.25% by mass, Carbon powder (manufactured by Ketjen Black International Co., Ltd .: Ketjen Black EC300J) 0.25 mass%, granulated zinc oxide (manufactured by Sakai Chemical Industry Co., Ltd .: JIS standard type 1, specific gravity 5.6, average particle size 100 μm) 50% by mass, bromine-based flame retardant (saytex8010 manufactured by Albermarle) 3.00% by mass, and Sb2O3 1.20% by mass were kneaded using a kneader to obtain a vibration damping and sound insulating material. Table 1 shows the physical properties of the obtained vibration damping and sound insulating material.

Comparative Example 1
14.80% by mass of polyester resin used in Example 1, mica scale (manufactured by Yamaguchi Mica Co., Ltd., trade name: CS-060DC; average particle size 200 μm, specific gravity 2.7 to 3.1) 84.95% by mass, Carbon vibration (Ketjen Black International Co., Ltd .: Ketjen Black EC300J) 0.25% by mass was kneaded using a kneader to obtain a vibration damping and sound insulating material. Table 1 shows the physical properties of the obtained vibration damping and sound insulating material.

Comparative Example 2
A vibration-damping and sound-insulating material was obtained in the same manner as in Example 2 except that the barium sulfate used was changed to Nippon Solvay Co., Ltd .: HD80 grade; average particle size 1.0 μm, specific gravity 4.4). Table 1 shows the physical properties of the obtained vibration damping and sound insulating material.

Comparative Example 3
A vibration-damping and sound-insulating material was obtained in the same manner as in Example 2 except that barium sulfate used was changed to Nippon Solvay Co., Ltd .: N grade; average particle size 1.7 μm, specific gravity 4.4). Table 1 shows the physical properties of the obtained vibration damping and sound insulating material.

Comparative Example 4
Zinc oxide that does not granulate the zinc oxide used (made by Sakai Chemical Industry Co., Ltd .: JIS standard type 1, specific gravity 5.6, average particle diameter 0.6 μm) Obtained. Table 1 shows the physical properties of the obtained vibration damping and sound insulating material.

  As shown in Table 1, the vibration-damping and sound-insulating material of the example has a higher sound-insulating property than the vibration-damping material of the comparative example (Comparative Example 1) without causing the problem of swelling.

  The vibration-damping and sound-insulating material of the present invention includes parts and housings for personal computers, OA equipment, AV equipment, mobile phones and other electrical / electronic equipment, optical equipment, precision equipment, toys, home / office electrical products, automobiles, aircraft In addition, it can be suitably used as a part of a ship or the like where vibration occurs.

Claims (11)

A vibration-damping and sound-insulating material comprising a polyester resin (X) comprising a dicarboxylic acid component constituent unit and a diol component constituent unit and an inorganic substance having an average particle size of 3 to 300 μm and a specific gravity of 3.5 or more, comprising: Number of dicarboxylic acid component structural units (A ₁ ) and main chain in which the number of carbon atoms in the main chain is odd relative to the total amount of all dicarboxylic acid component structural units (A ₀ ) and total diol component structural units (B ₀ ) The ratio [(A ₁ + B ₁ ) / (A ₀ + B ₀ )] of the total amount of diol component structural units (B ₁ ) having an odd number of carbon atoms in the range of 0.5 to 1.0 The ratio of the polyester resin (X) is 10 to 70% by mass, the average particle size is 3 to 300 μm, and the ratio of the inorganic substance having a specific gravity of 3.5 or more is 30 to 90% by mass. Vibration and sound insulation material. The structural unit of the dicarboxylic acid component having an odd number of carbon atoms in the main chain of the polyester resin (X) is isophthalic acid, malonic acid, glutaric acid, pimelic acid, azelaic acid, undecanedioic acid, brassic acid and 1,3- The vibration-damping and sound-insulating material according to claim 1, which is a structural unit derived from one or more dicarboxylic acids selected from the group consisting of cyclohexanedicarboxylic acids. 2. The vibration-damping and sound-insulating material according to claim 1, wherein the dicarboxylic acid component structural unit having an odd number of carbon atoms in the main chain of the polyester resin (X) is a structural unit derived from isophthalic acid and / or azelaic acid. The ratio (A ₁ / A ₀ ) of the number of dicarboxylic acid component structural units (A ₁ ) in which the number of carbon atoms in the main chain is odd in the total number of dicarboxylic acid component structural units (A ₀ ) of the polyester resin (X) is It is in the range of 0.5-1.0, The damping sound insulation material in any one of Claims 1-3. The diol component structural unit having an odd number of carbon atoms in the main chain of the polyester resin (X) is 1,3-propanediol, 1,3-butanediol, 2-methyl-1,3-propanediol, neopentyl 5. The vibration damping unit according to claim 1, which is a structural unit derived from one or more diols selected from the group consisting of glycol, 1,5-pentanediol, metaxylene glycol, and 1,3-cyclohexanediol. Sound insulation material. The diol component structural unit having an odd number of carbon atoms in the main chain of the polyester resin (X) is 1,3-propanediol, 1,5-pentanediol, 2-methyl-1,3-propanediol, 1, The vibration-damping and sound-insulating material according to any one of claims 1 to 4, which is a structural unit derived from one or more diols selected from the group consisting of 3-butanediol and neopentyl glycol. The ratio (B ₁ / B ₀ ) of the number of diol component structural units (B ₁ ) in which the number of carbon atoms in the main chain in the total number of diol component structural units (B ₀ ) of the polyester resin (X) is an odd number is 0. It is in the range of 5-1.0, The damping sound insulation material in any one of Claims 1-6. The polyester resin (X) had an intrinsic viscosity of 0.2 to 2.0 dL / g measured at 25 ° C. in a mixed solvent having a mass ratio of trichloroethane / phenol of 40/60, and measured by a differential scanning calorimeter. The vibration-damping and sound-insulating material according to any one of claims 1 to 7, wherein the calorific value of the temperature crystallization exothermic peak is 5 J / g or less. 9. The vibration-damping and sound-insulating material according to claim 1, wherein the inorganic substance having a specific gravity of 3.5 or more is at least one selected from barium sulfate and zinc oxide.   Furthermore, the vibration suppression sound insulation material in any one of Claims 1-9 containing a mica scale piece.   The vibration-damping and sound-insulating material according to claim 10, wherein the ratio of mica scale is 10 to 30% by mass.