WO2002053638A1 - Matériau d'amortissement de vibrations - Google Patents

Matériau d'amortissement de vibrations Download PDF

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Publication number
WO2002053638A1
WO2002053638A1 PCT/JP2000/009368 JP0009368W WO02053638A1 WO 2002053638 A1 WO2002053638 A1 WO 2002053638A1 JP 0009368 W JP0009368 W JP 0009368W WO 02053638 A1 WO02053638 A1 WO 02053638A1
Authority
WO
WIPO (PCT)
Prior art keywords
base material
weight
ethylene
vibration
vibration damping
Prior art date
Application number
PCT/JP2000/009368
Other languages
English (en)
Japanese (ja)
Inventor
Tatsuya Nishigaki
Tatsuya Aoki
Original Assignee
Shishiai-Kabushikigaisha
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shishiai-Kabushikigaisha filed Critical Shishiai-Kabushikigaisha
Priority to PCT/JP2000/009368 priority Critical patent/WO2002053638A1/fr
Priority to JP2002555156A priority patent/JPWO2002053638A1/ja
Publication of WO2002053638A1 publication Critical patent/WO2002053638A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/08—Copolymers of ethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/08—Copolymers of ethene
    • C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
    • C08L23/0853—Vinylacetate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/08—Copolymers of ethene
    • C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
    • C08L23/0869—Acids or derivatives thereof

Definitions

  • the present invention is applied to automobiles, home appliances, precision equipment, construction machinery, civil engineering buildings, various other machines, equipment, building structures, and the like, and propagates to the machines, equipment, structures, and the like.
  • the present invention relates to a vibration damping material capable of absorbing and attenuating vibration generated from a structure or the like.
  • a material is adhered to the application point of the machine, equipment, structure, etc., and propagates to the machine, equipment, structure, etc., or absorbs the vibration generated from the machine, equipment, structure, etc. And attenuated.
  • vibration damping materials are near normal temperature (15 to 30 V) for applications such as automobiles, home appliances, precision equipment, construction machinery, civil engineering buildings, and other various machines, equipment, and building structures.
  • glass transition point of asphalt and butyl chloride resin is lower than that, there was a problem that sufficient performance was not exhibited in the operating temperature range.
  • PC TZ JP 0 Z 0 47882 exhibits excellent vibration damping performance near room temperature (15 to 30 ° C) and generates harmful gas during incineration.
  • the company proposes damping materials that do not adversely affect the environment. That is, the vibration damping material proposed in PCT / JP 00/04782 uses an ethylene methacrylic acid-based polymer as a base material, and 100 to 100 parts by weight of this base material. Three An active component for increasing the amount of dipole moment in the base material is added at a ratio of 100 parts by weight.
  • the present invention relates to an improvement in the vibration damping material family proposed in PCT / JP0000 / 047882, which demonstrates excellent vibration damping performance near room temperature (_5 to 30 ° C).
  • Another object of the present invention is to provide a vibration damping material that does not generate harmful gas during incineration, does not adversely affect the environment, and has excellent workability.
  • the vibration damping material of the present invention is based on a mixture obtained by mixing an ethylene methacrylic acid-based polymer and an ethylene vinyl acetate-based polymer with 100 to 300 parts by weight of the base material.
  • An active ingredient for increasing the amount of dipole moment in the base material is compounded in parts by weight.
  • Examples of the ethylene methacrylic acid-based polymer (hereinafter referred to as EM) constituting the base material include, for example, ethylene, methacrylic acid, methacrylic acid ester, methyl methacrylate, isobutyl methacrylate, methacrylic acid mouthride, and getyl methacrylate.
  • Copolymers with aminoethyl, dimethylaminoethyl methacrylate, N-butyl methacrylate, radiuryl methacrylate, glycidyl methacrylate, and 1-2-hydroxyethyl methacrylate can be mentioned.
  • the ethylene-vinyl acetate polymer which constitutes the base material, is made by random copolymerization of ethylene and vinyl acetate, and imparts flexibility to the EM, thereby improving the processability of the damping material. It is a component that improves.
  • EVA ethylene-vinyl acetate polymer
  • the mixing ratio of EM and EVA is not particularly limited, but is preferably in the range of 70:30 to 30:70 by weight.
  • the higher the mixing ratio of EM the lower the flexibility and workability of the damping material.
  • the higher the ratio of EVA the higher the flexibility and workability.
  • the damping performance may be degraded at the operating temperature (hereinafter referred to as the operating temperature range) at the location where vibration occurs.
  • base material which base material is used for the damping material depends on the application of automobiles, home appliances, precision equipment, construction machinery, civil engineering buildings, various other machines, equipment, structures, etc. It may be appropriately determined in consideration of the use condition, handling, availability, temperature performance (heat resistance ⁇ cold resistance), weather resistance, price, and the like.
  • Figure 1 shows the base material before vibration energy (hereinafter simply referred to as energy) is transmitted.
  • each dipole 1 2 inside the base material 1 1 is unstable And each dipole 12 tries to return to a stable state as shown in FIG.
  • this damping material is used in a wide range of fields, such as automobiles, interior materials, building materials, and home appliances, the vibration absorption performance in the operating temperature range, specifically, normal temperature (-5 to 30 ° C) It is one of the important factors in applying the damping material to maximize the energy damping property. For this reason, when selecting the base material, it is desirable to consider at what temperature the vibration damping performance is most exhibited, in addition to the above-mentioned application fields, usage conditions, the amount of dipole moment inside the polymer, and the like. .
  • the active component is a component that dramatically increases the amount of dipole moment in the polymer.
  • the active component itself has a large dipole moment, or the active component itself has a small dipole moment.
  • active ingredients that lead to such an action and effect are, for example, N, N-dicyclohexylbenzothiazyl-2-sulfenamide (DCHBSA), .2_mercaptobenzothiazolone (MBT), dibenzothiazyl sulfide (MBTS), N-cyclohexyl benzothiaziruyl 2-sulfenamide (CBS), N-tert-butyl benzothiaziruyl 2-sulfenamide (BBS), N-oxyzetylene lenbenzothiazyl-12-sulfenamide (OBS), N Compounds containing a benzothiazyl group, such as N-diisopropylbenzothiazirulu-2-sulfenamide (DPBS),
  • DCHBSA N-dicyclohexylbenzothiazyl-2-sulfenamide
  • MTT .2_mercaptobenzothiazolone
  • MBTS dibenzo
  • a compound containing a diphenyl acrylate group such as ethyl 2-cyano 3, 3-diphenyl acrylate,
  • HMBP 2-hydroxy 4-methoxybenzophenone
  • HMBPS 2-hydroxy-4-methoxybenzophenone-5-snorrephonic acid
  • the amount of the active ingredient is 100 to 300 parts by weight based on 100 parts by weight of the base material, preferably 50 to 250 parts by weight, and most preferably 100 to 250 parts by weight. ⁇ 150 parts by weight. For example, if the amount of the active ingredient is less than 10 parts by weight, the effect of adding the active ingredient to increase the amount of the dipole moment cannot be obtained, and the amount of the active ingredient is 300 parts by weight. If more than the active ingredient, the active ingredient may not be sufficiently compatible with the base material. In deciding the active ingredient to be blended in the base material, it is preferable to select a material having a similar value in consideration of the compatibility between the active ingredient and the base material, that is, the SP value.
  • the amount of the dipole moment varies depending on the type of the base material and the active ingredient described above. Even if the same base material and active component are used, the amount of dipole moment changes depending on the temperature at which the energy is transmitted. Also, the amount of dipole moment changes according to the transmitted energy. Therefore, in consideration of the temperature and energy level when the damping material is applied, it is difficult to select and use the base material and the active component so that the amount of the dipole moment becomes the largest at that time. desirable.
  • the active ingredient is not limited to one kind, and two or more kinds can be mixed. In this case, it is also possible to mix at least two or more active components having different glass transition points in the base material, and shift the temperature range where the vibration damping performance is exhibited to the optimum use temperature range. .
  • my scales, glass pieces, glass fiber, carbon fiber, carbonic acid Fillers such as lucium, pearlite, and precipitated barium sulfate can also be filled.
  • the filling amount of the filler is preferably from 10 to 80% by weight.
  • the filling amount of the filler is less than 10% by weight, sufficient improvement in vibration absorption performance is not obtained even if the filling is performed with the filler, and conversely, the filling amount of the filler is set to an amount exceeding 80% by weight.
  • an adverse effect is caused.
  • the vibration-damping material of the present invention is a force obtained by blending the above-mentioned base material, active ingredient, and filler.
  • An apparatus for melting and mixing can be used.
  • FIG. 1 ' is a schematic view showing a dipole in the base material.
  • Figure 2 is a schematic diagram showing the state of the dipole in the base material when energy is applied.
  • FIG. 3 is a schematic diagram showing a state of a 'dipole' in a base material when an active ingredient is blended.
  • Fig. 4 is a graph showing the relationship between the temperature and the loss coefficient of the damping material in which DCHBSA is blended in the base material (Examples 1 to 4) and the undamped material (Comparative Examples 1 and 2).
  • EM Nucrel AN 4213C, manufactured by Mitsui Dupont Polychemical Co., Ltd.
  • EVA EV 45 LX (block copolymer with an amount of butyl acetate of 46% by weight)
  • Mitsui Dupont Polychem Power The base material is a mixture obtained by mixing DCHBSA (Suncellar DZ, manufactured by Sanshin Chemical Industry Co., Ltd.) and My power scales (Kuraray Mica, manufactured by Kuraray Co., Ltd.). And a flame retardant were blended as shown in Table 1 below, kneaded, and formed into a sheet having a thickness of 8 mm.
  • FIG. 4 shows that the peak of the loss coefficient () of each of the damping sheets of Comparative Examples 1 and 2 was about 110 ° C, whereas Examples 1 to 4 in which EM and EVA were used as base materials were used. All of the peaks of the loss coefficient () of the vibration damping sheet were located near room temperature of 15 to 30 ° C, and the loss coefficient () was higher than those of Comparative Examples 1 and 2. Also, according to FIG. 4, when looking at the graphs of the vibration damping sheets of Examples 1 and 2 and the vibration damping sheets of Examples 3 and 4 in which the content of DCHBSA is different, as shown in FIG. It was confirmed that the performance increased and the temperature shifted to a higher peak temperature range.
  • the brittleness (workability) of each of the vibration damping sheets of Examples 1 to 4 was as follows. Was evaluated in various ways.

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Vibration Prevention Devices (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

L'invention concerne un matériau d'amortissement de vibrations très efficace pour amortir les vibrations à température ordinaire (de 5° à 30°C). Il ne libère pas de gaz nocif lorsqu'il est incinéré, il est peu polluant et il présente une excellente aptitude à la mise en oeuvre. L'invention est caractérisée en ce qu'elle contient comme matériau de base un mélange de polymère acide éthylène/méthacrylique comportant un polymère acétate éthylène/vinyle, et en outre 10 à 300 parties en poids d'un composant actif pour augmenter le moment dipolaire dans le matériau de base par 100 parties en poids de ce dernier. Fig. 1 : A Energie
PCT/JP2000/009368 2000-12-27 2000-12-27 Matériau d'amortissement de vibrations WO2002053638A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2000/009368 WO2002053638A1 (fr) 2000-12-27 2000-12-27 Matériau d'amortissement de vibrations
JP2002555156A JPWO2002053638A1 (ja) 2000-12-27 2000-12-27 制振材料

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2000/009368 WO2002053638A1 (fr) 2000-12-27 2000-12-27 Matériau d'amortissement de vibrations

Publications (1)

Publication Number Publication Date
WO2002053638A1 true WO2002053638A1 (fr) 2002-07-11

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Family Applications (1)

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JP (1) JPWO2002053638A1 (fr)
WO (1) WO2002053638A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04348166A (ja) * 1990-10-13 1992-12-03 Bridgestone Corp 遮音性樹脂組成物
JPH05132593A (ja) * 1991-11-12 1993-05-28 Tosoh Corp エチレン−酢酸ビニル共重合体組成物
WO1997042844A1 (fr) * 1996-05-10 1997-11-20 Shishiai-Kabushikigaisha Composition de conversion d'energie
JP2000044814A (ja) * 1998-08-04 2000-02-15 Tokai Rubber Ind Ltd 高減衰材料組成物
JP2000281838A (ja) * 1999-03-30 2000-10-10 Tokai Rubber Ind Ltd 高減衰材料組成物

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04348166A (ja) * 1990-10-13 1992-12-03 Bridgestone Corp 遮音性樹脂組成物
JPH05132593A (ja) * 1991-11-12 1993-05-28 Tosoh Corp エチレン−酢酸ビニル共重合体組成物
WO1997042844A1 (fr) * 1996-05-10 1997-11-20 Shishiai-Kabushikigaisha Composition de conversion d'energie
JP2000044814A (ja) * 1998-08-04 2000-02-15 Tokai Rubber Ind Ltd 高減衰材料組成物
JP2000281838A (ja) * 1999-03-30 2000-10-10 Tokai Rubber Ind Ltd 高減衰材料組成物

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JPWO2002053638A1 (ja) 2004-05-13

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