JP2013032452A - Damping composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a damping composition suitable for damping material uses, which is excellent in damping properties at high temperatures (60-80°C), has satisfactory workability at room temperature (about 20°C), and can be easily produced.SOLUTION: The damping composition includes 80 mass% or more of a resin component (A) and an inorganic filler component (B) in total. The ratio of resin (α) in the resin component (A) is 30-70 mass%, and the ratio of resin (β) in the resin component (A) is 30-70 mass%. The resin (α) is composed of xylene resin having an OH value of 18 (mgKOH/g) or less, and the resin (β) is composed of one selected from ethylene ethyl acrylate copolymer (EEA), ethylene methyl acrylate copolymer (EMA), ethylene butyl acrylate copolymer (EBA), ethylene vinyl acetate copolymer (EVA), and olefinic elastomer, or a combination of two or more thereof.

Description

  The present invention relates to a composition having excellent vibration damping performance, and relates to a vibration damping material and damping material applied to vehicles, railways, aircraft, home appliances / OA equipment, precision equipment, construction machinery, civil engineering buildings, shoes, sports equipment, and the like. It is suitable for vibration materials and sound absorbing and insulating materials.

  Conventionally, in the above-mentioned vehicles, railways, airplanes, home appliances / OA equipment, precision equipment, construction machinery, civil engineering buildings, shoes, sports equipment, etc., vibration damping materials are used as materials for absorbing the vibration energy. Has been commonly used.

  As a material that absorbs vibration energy such as a damping material, a soft vinyl chloride resin in which a plasticizer is added to a vinyl chloride resin is known. This soft vinyl chloride resin has been designed to be damped by consuming vibration energy as frictional heat inside the resin, but has not been able to absorb and dampen the vibration sufficiently.

  As the vibration damping material, rubber materials such as butyl rubber and NBR, which are excellent in terms of workability, mechanical strength and material cost, are often used. 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. Damping performance is low. For example, a vibration-damping structure for buildings and equipment is combined with a laminated body 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.

  On the other hand, the xylene resin has an effect as a modifier for imparting tackiness by being dispersed in rubber or the like. For example, there is a vibration damping material (Patent Document 1) blended for the purpose of imparting adhesiveness to a rubber vibration damping material. In this technology, xylene resin is used for the purpose of imparting tackiness, so when xylene resin is added excessively, the tackiness of the surface of the vibration damping material becomes strong, and the moldability is poor, resulting in decreased productivity. Or the workability of the damping material in the form of a sheet is reduced. In addition, a technique using the damping performance of xylene resin is also disclosed (Patent Document 2). In this technology, xylene resin is used for imparting vibration damping performance, and a curable vibration damping material is used by using an epoxy resin and a curing agent in order to eliminate the stickiness derived from xylene resin. However, when a curable vibration damping material is used, the scraps generated at the manufacturing stage cannot be recycled, which leads to an increase in cost.

JP 2005-187772 A JP-A-5-310984

An object of the present invention is to provide a vibration damping composition suitable for use in a vibration damping material that is excellent in vibration damping properties at high temperatures (60 to 80 ° C.), has good workability at room temperature (around 20 ° C.), and can be easily manufactured. To provide things.

As a result of intensive studies to achieve the above object, the present inventors have determined that the specific resin (α) is 30 to 70% by mass and the specific resin (β) is 30 to 70% by mass. The vibration-damping composition in which the inorganic filler is dispersed in the component (A) has a high vibration-damping performance at a high temperature (60 to 80 ° C.) and good workability at room temperature (around 20 ° C.). And the present invention has been achieved.
That is, the present invention contains the resin component (A) and the inorganic filler component (B) in a total of 80% by mass or more, the ratio of the resin (α) in the resin component (A) is 30 to 70% by mass, and The ratio of the resin (β) in the resin component (A) is 30 to 70% by mass, the resin (α) is an xylene resin having an OH value of 18 (mg KOH / g) or less, and the resin (β) is ethylene ethyl acrylate. Copolymer resin (EEA), ethylene methyl acrylate copolymer resin (EMA), ethylene butyl acrylate copolymer resin (EBA), ethylene vinyl acetate copolymer resin (EVA), one type of olefinic elastomer alone, or two types The present invention relates to a vibration-damping resin composition characterized by being a vibration-damping composition characterized by combining the above.

  The vibration damping composition of the present invention is excellent in vibration damping properties at high temperatures (60 to 80 ° C.) and processability at room temperature (around 20 ° C.), and is suitable for use in vibration damping materials that can be easily manufactured. A resin composition can be provided, and the industrial significance of the present invention is great.

The present invention is described in detail below.
The vibration damping composition of the present invention uses a resin component (A) and an inorganic filler component (B) as main raw materials. In the vibration damping composition of the present invention, the total amount of the resin component (A) and the inorganic filler component (B) is 80% by mass or more, preferably 85% or more. If the total of the resin component (A) and the inorganic filler component (B) is less than 80% by mass, sufficient vibration damping performance cannot be obtained.

  In the vibration damping composition of the present invention, the resin component (A) contains 30 to 70% by mass of the resin (α) and 30 to 70% by mass of the resin (β). When the ratio of the resin (α) in the resin component (A) is less than 30% by mass, sufficient vibration damping performance cannot be obtained, and when it is 70% by mass or more, moldability is deteriorated. If the proportion of the resin (β) in the resin component (A) is 30% by mass or less, sufficient moldability cannot be obtained, and if it is 70% by mass or more, the vibration damping performance is lowered.

  The resin (α) is a xylene resin having an OH value of 18 (mg KOH / g) or less. The OH value is preferably 16 (mg KOH / g) or less, and more preferably 14 (mg KOH / g) or less. The xylene resin is a resin obtained by reacting meta-xylene and formaldehyde in the presence of an acid catalyst. Xylene resin is excellent in compatibility with many synthetic resins and natural polymers, and is therefore used as a modifier for imparting tackiness to one of its uses. When a xylene resin is used as the main raw material of the vibration damping material, stickiness derived from xylene is generated on the surface of the obtained vibration damping material, which may make molding processing and handling difficult. Although it is possible to suppress adhesiveness by blending a large amount of thermoplastic resin or filler other than xylene resin, there is a problem that the vibration damping performance and moldability are lowered.

However, as a result of intensive studies by the present inventors, when a xylene resin having an OH value of 18 (mg KOH / g) or less is used, the tackiness of the xylene resin is sufficiently suppressed, and thus the resulting vibration damping composition It has been found that the adhesiveness of the surface of the object is reduced, and the molding process and handling become easy. Usually, the vibration damping material is formed into a sheet shape by hot pressing or extrusion molding, and is used by processing the shape according to the location to be used. If the surface of the damping material is sticky, it is difficult to form into a sheet shape, and workability is deteriorated when the sheet is processed. For this reason, it is desirable that the surface of the vibration damping material is not sticky.

Here, the manufacturing method of resin ((alpha)) used by this invention is described. A xylene resin (a) is obtained by reacting meta-xylene and formaldehyde in the presence of an acid catalyst. Alternatively, xylene resin (a) is obtained by modifying xylene resin (a) with phenol (novolak, resol) or polyol / ethylene oxide.
As long as the OH value of the xylene resin (a) and the xylene resin (a ′) is 18 (mg KOH / g) or less, the xylene resin (a) and the xylene resin (a ′) can be used as the resin (α). .

  When the OH value of the xylene resin (a) and the xylene resin (a ′) is larger than 18 (mg KOH / g), the xylene resin (a) and the xylene resin (a ′) are self-condensed or phenol (novolak) , Resol) or polyol / ethylene oxide or the like, and the like, the OH value can be made 18 (mg KOH / g) or less, and the resin (α) can be obtained. In the present invention, the unmodified resin, self-condensation resin, and various modified resins may be used in combination of two or more. It is preferable that resin ((alpha)) is Mn = 500-1200 and Mw = 700-5000.

  Since the resin (α) has an OH value of xylene resin of 18 (mg KOH / g) or less, the softening point of the resin rises to around 60 to 80 ° C. Therefore, the vibration damping material using the resin (α) The peak temperature of the vibration damping performance shifts to a high temperature of 60 to 80 ° C. At the same time, a damping material having a peak damping performance at 60 to 80 ° C. has reduced processability (cutting with a scissors or punching processability) when formed into a sheet. In order to solve such problems, blending a plasticizer is a very effective means, but the blending of the plasticizer shifts the peak temperature of the vibration damping performance to a low temperature. From the above, it is necessary to add a resin (β) having a good flexibility at room temperature in order to keep the peak temperature of the vibration damping performance at a high temperature and at the same time solve the decrease in workability.

Resin (β) is selected from ethylene ethyl acrylate copolymer resin (EEA), ethylene methyl acrylate copolymer resin (EMA), ethylene butyl acrylate copolymer resin (EBA), ethylene vinyl acetate copolymer resin (EVA), and olefin elastomer. Can be used alone or in combination of two or more.
The proportion of the resin (β) in the resin component (A) is 30 to 70% by mass, and if it is less than 30% by mass, good processability cannot be obtained. Performance will be degraded.

The resin component (A) may be all the resin (α) and the resin (β), but resins (other resins) other than the resin (α) and the resin (β) do not impair the effects of the present invention. Can be filled to the extent. Other resins include, but are not limited to, polyethylene, polypropylene, polystyrene, ABS resin, polyvinyl acetate, phenolic resin, modified phenolic resin, terpene resin, epoxy resin, polyamide resin, polyurethane, polyvinyl chloride, and the like. .

  In the vibration damping resin composition of the present invention, it is necessary to fill the resin component (A) with the inorganic filler component (B) for the purpose of improving vibration energy absorption. The inorganic filler component (B) used in the present invention preferably contains 70% by mass or more of scaly inorganic filler, such as mica scale, glass piece, sericite, graphite, talc, aluminum flake, boron nitride. And flaky fillers such as molybdenum disulfide and graphite. Among these, when mica scales are used as the filler, higher vibration damping performance is obtained, and white mica, which is scale-like mica having a high vibration energy absorption efficiency, is preferable. In addition, other inorganic fillers having different shapes can be filled to such an extent that the effects of the present invention are not impaired. Examples of the inorganic filler having a shape other than the scale shape include glass fiber, carbon fiber, calcium carbonate, calcium sulfate, calcium silicate, titanium dioxide, tin oxide, zinc oxide, indium oxide, silicon dioxide, strontium titanate, barite. , Whisker, precipitated barium sulfate, magnesium silicate, aluminum silicate, ferrite, clay, leechite, montmorillonite, stainless flake, nickel flake, silica, carbon black, carbon nanotube, PAN carbon fiber, pitch carbon fiber, vapor phase growth Examples include, but are not limited to, graphite, borax, kiln ash, cement, dolomite, silver powder, iron powder, lead powder, copper powder, and nickel powder.

  The inorganic filler component (B) preferably has a mass ratio of 0.5 to 5.0, more preferably 1.2 to 4.5, with respect to the resin component (A). When the mass proportion is less than 0.5, the effect of improving the vibration damping performance when the inorganic filler is blended is low, and when the mass proportion exceeds 5, the damping performance is increased although the content of the inorganic filler in the composition is large. Is not improved so much and the moldability is poor.

  One or more additives can be added to the vibration damping composition of the present invention as needed within a range not inhibiting the effects of the present invention. For example, it is possible to add a flame retardant, a flame retardant auxiliary, etc. for the purpose of imparting flame retardancy. As a flame retardant and a flame retardant auxiliary, it is preferable to use a brominated flame retardant and an antimony compound together because good flame retardancy can be obtained without a decrease in damping performance. In addition, dispersants, compatibilizers, surfactants, antistatic agents, crosslinking agents, antioxidants, anti-aging agents, weathering agents, heat-resistant agents, processing aids, brighteners, colorants (pigments, dyes) Further, a foaming agent, a foaming aid, a lubricant and the like can be added within a range that does not impair the effects of the present invention. Also, blending with other resins or surface treatment after molding can be performed within a range that does not impair the effects of the present invention.

The vibration-damping resin composition of the present invention can be obtained by mixing the resin component (A), the inorganic filler component (B), and various additives as required. The mixing method is a known method. Can be used. 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, it is preferable to mix with any apparatus of a kneader, a Banbury mixer, or an intermixer because the kneading time can be freely adjusted and the dispersion state of the resin composition becomes good.

  The vibration-damping composition of the present invention is molded or processed into an injection-molded product, sheet, film, fiber, container, foam, adhesive, paint, constrained vibration-damping sheet, unconstrained vibration-damping sheet, etc. It can be suitably used as an anti-vibration material, damping material, and sound-absorbing / insulating material adapted to railways, aircraft, home appliances / OA equipment, precision equipment, construction machinery, civil engineering buildings, shoes, sports equipment, and the like.

Examples are shown below, but the present invention is not limited to the following examples.
The evaluation method of the xylene resin and the vibration damping composition was as follows.
(1) Molecular weight measurement of xylene resin:
Measured under the following conditions by gel permeation chromatogram method.
The molecular weight was converted with standard polystyrene.
Measuring model: Showa Denko "Shodex GPC101"
Column: 3 LF804 Elution solvent: Tetrahydrofuran Flow rate 1mL / min
Column temperature: 40 ° C

(2) Method for measuring OH number of xylene resin:
The sample was acetylated with an excess amount of acetic anhydride in a pyridine solvent, and the excess acetic anhydride that was not consumed in the acetylation reaction was titrated with an aqueous sodium hydroxide solution.
・ Weigh precisely 1 g of resin in a 200 ml iodine flask. (W)
Make a solution of acetic anhydride / pyridine = 1/9 (v / v).
Add 10 ml of acetic anhydride / pyridine = 1/9 (v / v) solution to the iodine flask containing the resin using a whole pipette to dissolve the resin.
・ React the Erlenmeyer flask with a water bath for 1 hour. (About 95 ° C)
-Remove the iodine flask from the hot water bath after the reaction, add 20-30 ml of pure water, decompose the excess acetic anhydride and simultaneously cool the sample to about room temperature.
Add 3-4 drops of phenolphthalein as an indicator and titrate with 1N NaOH aqueous solution. (Titration A)
・ Put 10 ml of acetic anhydride / pyridine = 1/9 (v / v) solution and 20-30 ml of pure water into a 200 ml iodine flask without resin, stir well, and add 3-4 drops of phenolphthalein as one indicator. Titrate with 1N NaOH aqueous solution. (Titration volume B)
・ Calculate the OH value by the following formula.
OH value (mgKOH) = (BA) × F × 56.1 / W
F: The titer of 1N-NaOH aqueous solution

(3) The loss coefficient damping composition sample was molded at 170 ° C. by hot pressing to obtain a sheet having a thickness of about 1 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 maximum value of the loss coefficient obtained in the above measurement temperature range. Note that the greater the loss factor, the higher the damping performance.

(4) Workability evaluation A vibration damping composition sample was molded at 170 ° C. by hot pressing to obtain a sheet having a thickness of about 2 mm. Sheets obtained in a room with an atmosphere of 20 ± 2 ° C. were cut with a jumbo cutting machine (product name: JB-710, manufactured by Mits Corporation), and the workability was evaluated based on the state of the sheet near the cutting position.
Excellent (◎): When there is no damage such as cracks at the cut location Impossible (×): When cracks occur at the cut location, or the sheet collapses due to cutting

(5) Flame Retardancy Evaluation A vibration damping composition sample was molded at 170 ° C. by hot pressing to obtain a sheet having a thickness of about 1 mm. The obtained sheet was cut out to 13 mm × 125 mm to obtain a test piece, and a 20 mm vertical combustion test was performed in accordance with the UL-94 standard. The case where the flammability was V-2 or higher (V-2, V-1 or V-0) was regarded as acceptable.
The standard of each V grade for UL-94 is as outlined below.
V-0: Flame digestion time after 10 seconds of flame contact (first flame contact) on 5 test pieces and flame digestion time after re-flame (second flame contact) immediately after the first flame digestion for 10 seconds Is 5 seconds or less on average and 10 seconds or less at maximum, the total time of glow digestion after the end of the second flame contact is 30 seconds or less, and the absorbent cotton 30 cm below the test piece does not ignite.
V-1: Flame digestion time after 10 seconds of flame contact (first flame contact) on 5 specimens and flame digestion time after 10 seconds of re-flame (second flame contact) immediately after the first flame digestion Is an average of 25 seconds or less and a maximum of 30 seconds or less. The total time of glow digestion after the second flame contact is 60 seconds or less, and the absorbent cotton 30 cm below the test piece does not ignite.
V-2: Flame digestion time after 10 seconds of flame contact (first flame contact) on 5 specimens and flame digestion time after 10 seconds of re-flame (second flame contact) immediately after first flame digestion Is an average of 25 seconds or less and a maximum of 30 seconds or less, and the total time of glow digestion after the second flame contact is 60 seconds or less, and absorbent cotton 30 cm below the test piece ignites.

<Resin production example 1>
In a separable flask having an internal volume of 2 liters equipped with a thermometer, a reflux condenser and a stirrer, 600 g of 50% formalin (Mitsubishi Gas Chemical Co., Ltd.), 200 g of 98% industrial sulfuric acid (Mitsubishi Materials Co., Ltd.) and metaxylene 424 g (Mitsubishi Gas Chemical Co., Ltd.) is charged and reacted at 95-100 ° C. for 4 hours. After completion of the reaction, 400 g of metaxylene was added and allowed to stand to separate the resin phase and the sulfuric acid aqueous phase, and then the resin phase was washed three times to distill metaxylene under the conditions of 20-30 mmHg / 140-150 ° C. Thereafter, 570 g of resin (a) (OH value = 36 (mg KOH / g). Mn = 765, Mw = 1205) was obtained.

<Resin production example 2>
Into a 1 liter separable flask equipped with a thermometer, a Liebig condenser, a stirrer, and a steam introduction tube, 500 g of resin (a) and 0.25 g of paratoluenesulfonic acid (special grade reagent from Wako Pure Chemical Industries, Ltd.) were charged. Heat to 200 ° C. and allow to react for 4 hours under steam. Resin (α) (OH value = 12.5 (mg KOH / g). Mn = 1047, Mw after dehydration for 30 minutes under conditions of 100 mmHg / 190-200 ° C. after the steam was stopped. = 3480) 420 g was obtained.

<Example 1>
Resin (α) obtained in Resin Production Example 2 is 16% by mass, resin (β) is olefin-based elastomer (Dow Chemical Japan, trade name: Engage 8150) 20.1% by mass, scaly Mica scales (trade name: CS060-DC manufactured by Yamaguchi Mica Co., Ltd., 45% by mass) as inorganic fillers, talc (manufactured by Matsumura Sangyo Co., Ltd., product name: talc 3S), 9.8% by mass, inorganic fillers Carbon black (manufactured by Colombian Carbon Japan Co., Ltd., trade name: Raven-UV-B) 0.1% by mass as a material, brominated diphenylethane (trade name: saytex 8010) 6 produced as a brominated flame retardant Mass%, 3% by mass of antimony trioxide as an antimony compound is charged in a 60 cc kneader at 170 ° C for 15 minutes. And the mixture was kneaded. The evaluation results of the obtained vibration damping composition are shown in Table 1.

<Example 2>
Resin (α) obtained in Resin Production Example 2 25.8% by mass, resin (β) as olefin-based elastomer (Dow Chemical Nippon Co., Ltd., trade name: Engage 8150) 20.1% by mass, scale 45% by mass as a solid inorganic filler (trade name: CS060-DC, manufactured by Yamaguchi Mica Co., Ltd.) and carbon black (trade name: Raven-UV-B, manufactured by Colombian Carbon Japan Co., Ltd.) as an inorganic filler 0.1% by mass, 6% by mass of brominated diphenylethane (manufactured by Albemarle Japan Co., Ltd., trade name: saytex 8010) as a brominated flame retardant, and 3% by mass of antimony trioxide as an antimony compound are charged into a 60 cc kneader in a batch, 170 The mixture was kneaded at 15 ° C. for 15 minutes. The evaluation results of the obtained vibration damping composition are shown in Table 1.

<Example 3>
Resin (α) obtained in Resin Production Example 2 is 16% by mass, resin (β) is olefin-based elastomer (Dow Chemical Japan, trade name: Engage 8150) 20.1% by mass, scaly Mica scale as an inorganic filler (trade name: CS060-DC, manufactured by Yamaguchi Mica Co., Ltd.) 54.8% by mass, carbon black as an inorganic filler (trade name: Raven-UV-B, manufactured by Colombian Carbon Japan Co., Ltd.) 0.1% by mass, 6% by mass of brominated diphenylethane (manufactured by Albemarle Japan Co., Ltd., trade name: saytex 8010) as a brominated flame retardant, and 3% by mass of antimony trioxide as an antimony compound are charged into a 60 cc kneader in a batch, 170 The mixture was kneaded at 15 ° C. for 15 minutes. The evaluation results of the obtained vibration damping composition are shown in Table 1.

<Example 4>
20.1% by mass of ethylene vinyl acetate copolymer resin (Mitsui / DuPont Polychemical Co., Ltd., trade name: V5773W) as resin (β) with respect to 16% by mass of resin (α) obtained in Resin Production Example 2. Mica scales (manufactured by Yamaguchi Mica Co., Ltd., trade name: CS060-DC) 54.8% by mass as a scale-like inorganic filler, and carbon black (Colombian Carbon Japan Co., Ltd., trade name: Raven-UV) as an inorganic filler. -B) 0.1% by mass, brominated diphenylethane as a brominated flame retardant (Albemarle Japan Co., Ltd., trade name: saytex 8010) 6% by mass, antimony trioxide 3% by mass in a 60 cc kneader The mixture was kneaded at 170 ° C. for 15 minutes. The evaluation results of the obtained vibration damping composition are shown in Table 1.

<Example 5>
20.1% by mass of ethylene ethyl acrylate copolymer resin (trade name: 2116AC, manufactured by Mitsui DuPont Polychemical Co., Ltd.) as resin (β) with respect to 16% by mass of resin (α) obtained in Resin Production Example 2. Mica scales (manufactured by Yamaguchi Mica Co., Ltd., trade name: CS060-DC) 54.8% by mass as a scale-like inorganic filler, and carbon black (Colombian Carbon Japan Co., Ltd., trade name: Raven-UV) as an inorganic filler. -B) 0.1% by mass, brominated diphenylethane as a brominated flame retardant (Albemarle Japan Co., Ltd., trade name: saytex 8010) 6% by mass, antimony trioxide 3% by mass in a 60 cc kneader The mixture was kneaded at 170 ° C. for 15 minutes. The evaluation results of the obtained vibration damping composition are shown in Table 1.

<Example 6>
20.1% by mass of ethylene methyl acrylate copolymer resin (trade name: 1125AC, manufactured by Mitsui DuPont Polychemical Co., Ltd.) as resin (β) with respect to 16% by mass of resin (α) obtained in Resin Production Example 2. Mica scales (manufactured by Yamaguchi Mica Co., Ltd., trade name: CS060-DC) 54.8% by mass as a scale-like inorganic filler, and carbon black (Colombian Carbon Japan Co., Ltd., trade name: Raven-UV) as an inorganic filler. -B) 0.1% by mass, brominated diphenylethane as a brominated flame retardant (Albemarle Japan Co., Ltd., trade name: saytex 8010) 6% by mass, antimony trioxide 3% by mass in a 60 cc kneader The mixture was kneaded at 170 ° C. for 15 minutes. Table 2 shows the evaluation results of the obtained vibration damping composition.

<Example 7>
20.1% by mass of ethylene butyl acrylate copolymer resin (Mitsui / DuPont Polychemical Co., Ltd., trade name: 3427AC) as resin (β) with respect to 16% by mass of resin (α) obtained in Resin Production Example 2. Mica scales (manufactured by Yamaguchi Mica Co., Ltd., trade name: CS060-DC) 54.8% by mass as a scale-like inorganic filler, and carbon black (Colombian Carbon Japan Co., Ltd., trade name: Raven-UV) as an inorganic filler. -B) 0.1% by mass, brominated diphenylethane as a brominated flame retardant (Albemarle Japan Co., Ltd., trade name: saytex 8010) 6% by mass, antimony trioxide 3% by mass in a 60 cc kneader The mixture was kneaded at 170 ° C. for 15 minutes. Table 2 shows the evaluation results of the obtained vibration damping composition.

<Example 8>
Resin (α) obtained in Resin Production Example 2 is 16% by mass, and the resin (β) is olefin-based elastomer (Dow Chemical Nippon Co., Ltd., trade name: Engage 8150) 10.1% by mass, resin (β ) Ethylene vinyl acetate copolymer resin (Mitsui / DuPont Polychemical Co., Ltd., trade name: V5773W) 10.0 mass%, scale-like inorganic filler as mica scales (manufactured by Yamaguchi Mica Co., Ltd., trade name: CS060-) DC) 54.8% by mass, carbon black (manufactured by Colombian Carbon Japan Co., Ltd., trade name: Raven-UV-B) as an inorganic filler, 0.1% by mass, brominated diphenylethane (Albemarle Japan) as a brominated flame retardant Co., Ltd., trade name: saytex 8010) 6% by mass, antimony trioxide 3% by mass as antimony compound 6% Charged collectively in cc kneader and kneaded for 15 minutes at 170 ° C.. Table 2 shows the evaluation results of the obtained vibration damping composition.

<Example 9>
Resin (α) obtained in Resin Production Example 2 is 16% by mass, and the resin (β) is olefin-based elastomer (Dow Chemical Nippon Co., Ltd., trade name: Engage 8150) 10.1% by mass, resin (β ) Ethylene ethyl acrylate copolymer resin (Mitsui / DuPont Polychemical Co., Ltd., trade name: 2116AC) 10.0% by mass, scale-like inorganic filler as mica scales (manufactured by Yamaguchi Mica Co., Ltd., trade name: CS060-) DC) 54.8% by mass, carbon black (manufactured by Colombian Carbon Japan Co., Ltd., trade name: Raven-UV-B) as an inorganic filler, 0.1% by mass, brominated diphenylethane (Albemarle Japan) as a brominated flame retardant Product name: Saytex 8010) 6% by mass, antimony trioxide trimethyl as an antimony compound % Was charged collectively in 60cc kneader and kneaded for 15 minutes at 170 ° C.. Table 2 shows the evaluation results of the obtained vibration damping composition.

<Example 10>
Resin (α) obtained in Resin Production Example 2 is 16% by mass, and the resin (β) is olefin-based elastomer (Dow Chemical Nippon Co., Ltd., trade name: Engage 8150) 10.1% by mass, resin (β ) Ethylene methyl acrylate copolymer resin (Mitsui / DuPont Polychemical Co., Ltd., trade name: 1125AC) 10.0% by mass, scale-like inorganic filler as mica scales (manufactured by Yamaguchi Mica Co., Ltd., trade name: CS060-) DC) 54.8% by mass, carbon black (manufactured by Colombian Carbon Japan Co., Ltd., trade name: Raven-UV-B) as an inorganic filler, 0.1% by mass, brominated diphenylethane (Albemarle Japan) as a brominated flame retardant Product name: Saytex 8010) 6% by mass, antimony trioxide trimethyl as an antimony compound % Was charged collectively in 60cc kneader and kneaded for 15 minutes at 170 ° C.. Table 2 shows the evaluation results of the obtained vibration damping composition.

<Example 11>
Resin (α) obtained in Resin Production Example 2 is 16% by mass, and the resin (β) is olefin-based elastomer (Dow Chemical Nippon Co., Ltd., trade name: Engage 8150) 10.1% by mass, resin (β ) As an ethylene butyl acrylate copolymer resin (Mitsui / DuPont Polychemical Co., Ltd., trade name: 3427AC), 10.0% by mass, and scale-like inorganic filler as mica scales (manufactured by Yamaguchi Mica Co., Ltd., trade name: CS060-) DC) 54.8% by mass, carbon black (manufactured by Colombian Carbon Japan Co., Ltd., trade name: Raven-UV-B) as an inorganic filler, 0.1% by mass, brominated diphenylethane (Albemarle Japan) as a brominated flame retardant Product name: Saytex 8010) 6% by mass, antimony trioxide trimethyl as an antimony compound % Was charged collectively in 60cc kneader and kneaded for 15 minutes at 170 ° C.. The evaluation results of the obtained vibration damping composition are shown in Table 3.

<Comparative Example 1>
Polyethylene (Nippon Polyethylene Co., Ltd., trade name: LJ803) 20.1% by mass as a thermoplastic resin with respect to 16% by mass of the resin (α) obtained in Resin Production Example 2, Mica scale as a scaly inorganic filler (Product name: CS060-DC manufactured by Yamaguchi Mica Co., Ltd.) 45% by mass, talc (manufactured by Matsumura Sangyo Co., Ltd., product name: talc 3S) 9.8% by mass, carbon black (Colombian as inorganic filler)・ Carbon Japan Co., Ltd., trade name: Raven-UV-B) 0.1% by mass, brominated diphenylethane as a brominated flame retardant (Albemarle Japan Co., Ltd., trade name: saytex 8010) 6% by mass, as antimony compound 3% by mass of antimony trioxide was charged all at once into a 60 cc kneader and kneaded at 170 ° C. for 15 minutes. The evaluation results of the obtained vibration damping composition are shown in Table 3.

<Comparative example 2>
Polyethylene (Nippon Polyethylene Co., Ltd., trade name: LJ803) 20.1% by mass as a thermoplastic resin with respect to 16% by mass of the resin (α) obtained in Resin Production Example 2, Mica scale as a scaly inorganic filler (Product name: CS060-DC, manufactured by Yamaguchi Mica Co., Ltd.) 45% by mass, talc (manufactured by Matsumura Sangyo Co., Ltd., product name: talc 3S), 3.8% by mass, carbon black (Colombian, inorganic filler)・ Carbon Japan Co., Ltd., trade name: Raven-UV-B) 0.1% by mass, brominated diphenylethane as a brominated flame retardant (Albemarle Japan Co., Ltd., trade name: saytex 8010) 6% by mass, as antimony compound 3% by mass of antimony trioxide, di-2-ethylhexyl phthalate as a plasticizer (manufactured by CG Esther, (Product name: DOP) 6% by mass was charged in a 60 cc kneader and kneaded at 170 ° C. for 15 minutes. The evaluation results of the obtained vibration damping composition are shown in Table 3.

<Comparative Example 3>
Polyethylene (Nippon Polyethylene Co., Ltd., trade name: LJ803) 20.1% by mass as a thermoplastic resin with respect to 16% by mass of the resin (α) obtained in Resin Production Example 2, Mica scale as a scaly inorganic filler (Product name: CS060-DC, manufactured by Yamaguchi Mica Co., Ltd.) 54.8% by mass, carbon black (manufactured by Colombian Carbon Japan Co., Ltd., product name: Raven-UV-B) 0.1% by mass as an inorganic filler, Brominated diphenylethane (manufactured by Albemarle Japan Co., Ltd., trade name: saytex 8010) 6% by mass as a brominated flame retardant, and 3% by mass of antimony trioxide as an antimony compound were charged together in a 60 cc kneader and kneaded at 170 ° C. for 15 minutes. . The evaluation results of the obtained vibration damping composition are shown in Table 3.

<Comparative example 4>
20.1% by mass of polypropylene (manufactured by Nippon Polypro Co., Ltd., trade name: MG03B) as a thermoplastic resin with respect to 16% by mass of the resin (α) obtained in Resin Production Example 2, mica scale as a scaly inorganic filler (Product name: CS060-DC, manufactured by Yamaguchi Mica Co., Ltd.) 54.8% by mass, carbon black (manufactured by Colombian Carbon Japan Co., Ltd., product name: Raven-UV-B) 0.1% by mass as an inorganic filler, Brominated diphenylethane (manufactured by Albemarle Japan Co., Ltd., trade name: saytex 8010) 6% by mass as a brominated flame retardant, and 3% by mass of antimony trioxide as an antimony compound were charged together in a 60 cc kneader and kneaded at 170 ° C. for 15 minutes. . The evaluation results of the obtained vibration damping composition are shown in Table 3.

<Comparative Example 5>
20.1% by mass of polystyrene (manufactured by PS Japan Co., Ltd., trade name: 679) as a thermoplastic resin with respect to 16% by mass of the resin (α) obtained in Resin Production Example 2, mica scale as a scale-like inorganic filler (Product name: CS060-DC, manufactured by Yamaguchi Mica Co., Ltd.) 54.8% by mass, carbon black (manufactured by Colombian Carbon Japan Co., Ltd., product name: Raven-UV-B) 0.1% by mass as an inorganic filler, Brominated diphenylethane (manufactured by Albemarle Japan Co., Ltd., trade name: saytex 8010) 6% by mass as a brominated flame retardant, and 3% by mass of antimony trioxide as an antimony compound were charged together in a 60 cc kneader and kneaded at 170 ° C. for 15 minutes. . The evaluation results of the obtained vibration damping composition are shown in Table 4.

<Comparative Example 6>
Acrylonitrile / butadiene / styrene copolymer resin (trade name: Fu23, manufactured by UMG ABS Co., Ltd.) is 20.1% by mass as a thermoplastic resin with respect to 16% by mass of the resin (α) obtained in Resin Production Example 2. As an inorganic filler, mica scale (made by Yamaguchi Mica Co., Ltd., trade name: CS060-DC) 54.8% by mass, and as an inorganic filler, carbon black (made by Colombian Carbon Japan Co., Ltd., trade name: Raven-UV-B) ) 0.1% by mass, brominated diphenylethane (manufactured by Albemarle Japan Co., Ltd., trade name: saytex 8010) 6% by mass as a brominated flame retardant, and 3% by mass of antimony trioxide as an antimony compound are collectively charged into a 60 cc kneader, It knead | mixed for 15 minutes at 170 degreeC. The evaluation results of the obtained vibration damping composition are shown in Table 4.

  As shown in Tables 1 to 4, a resin (α) having an OH value of 18 (mg KOH / g) or less of a resin (a) obtained by reacting meta-xylene of the present invention with formaldehyde in the presence of an acid catalyst; The damping composition using one kind selected from EEA, EMA, EBA, EVA, and olefin elastomer, which are resins (β), alone or in combination of two or more kinds is a damping composition using polyethylene of Comparative Example. Compared with the vibratory composition, the loss factor at a high temperature (60 to 80 ° C.) is kept good and the processability at room temperature (around 20 ° C.) is good. That is, a molding material having high vibration damping performance at high temperature (60 to 80 ° C.) and good workability at room temperature (around 20 ° C.) can be obtained.

Claims (4)

The resin component (A) and the inorganic filler component (B) are contained in a total of 80% by mass or more, the ratio of the resin (α) in the resin component (A) is 30 to 70% by mass, and the resin component (A) The resin (β) is 30 to 70% by mass, the resin (α) is a xylene resin having an OH number of 18 (mg KOH / g) or less, and the resin (β) is an ethylene ethyl acrylate copolymer resin ( EEA), ethylene methyl acrylate copolymer resin (EMA), ethylene butyl acrylate copolymer resin (EBA), ethylene vinyl acetate copolymer resin (EVA) and one or more selected from olefin elastomers A vibration damping composition.   The damping composition according to claim 1, wherein the mass ratio of the inorganic filler component (B) to the resin component (A) is 0.5 to 5.0. The vibration-damping composition according to claim 1 or 2, wherein the proportion of the flaky inorganic filler in the inorganic filler component (B) is 70% by mass or more. The vibration-damping composition according to claim 3, wherein the scale-like inorganic filler is mica scale.