WO2001072891A1 - Isolant en caoutchouc pour vibrations - Google Patents

Isolant en caoutchouc pour vibrations Download PDF

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Publication number
WO2001072891A1
WO2001072891A1 PCT/JP2000/001847 JP0001847W WO0172891A1 WO 2001072891 A1 WO2001072891 A1 WO 2001072891A1 JP 0001847 W JP0001847 W JP 0001847W WO 0172891 A1 WO0172891 A1 WO 0172891A1
Authority
WO
WIPO (PCT)
Prior art keywords
rubber
vibration
base material
spring constant
acrylonitrile
Prior art date
Application number
PCT/JP2000/001847
Other languages
English (en)
Japanese (ja)
Inventor
Mitsuo Hori
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/JP2000/001847 priority Critical patent/WO2001072891A1/fr
Publication of WO2001072891A1 publication Critical patent/WO2001072891A1/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
    • C08K5/16—Nitrogen-containing compounds
    • C08K5/34—Heterocyclic compounds having nitrogen in the ring
    • C08K5/3467—Heterocyclic compounds having nitrogen in the ring having more than two nitrogen atoms in the ring
    • C08K5/3472—Five-membered rings
    • C08K5/3475—Five-membered rings condensed with carbocyclic rings

Definitions

  • the present invention relates to a high-damping rubber having high damping properties that insulates or reduces vibration transmission from a vibration source such as an automobile, an interior material, a building material, and a home appliance.
  • a vibration source such as an automobile, an interior material, a building material, and a home appliance.
  • this rubber material has the best damping property (transmission insulation performance or transmission mitigation performance of vibration energy) among general polymers, but it is used as a vibration-proof material by itself.
  • the vibration damping structure of buildings and equipment is combined with a laminated body composed of a rubber material and a steel plate, or a lead core or oil damper that plastically deforms and absorbs vibration energy.
  • V used in composite form.
  • the rubber base material of the present invention has a rubber material base material of acrylonitrile-butadiene rubber (NBR), which increases the amount of dipole moment 2— ⁇ 2′—hide mouth 3 ′ — (3 ”, It contains 4 ", 5", 6 "-tetrahydrophthalimidomethyl-1-5'-methylphenyl] -benzotriazole (2HPMMB) with an active ingredient.
  • NBR acrylonitrile-butadiene rubber
  • Figure 1 shows the arrangement of the dipoles 12 inside the base material 11 before the vibration energy is transmitted. It can be said that the arrangement state of the dipoles 12 is in a stable state. However, the transmission of vibration energy causes displacement of the dipoles 12 existing inside the base material 11, and as shown in Fig. 2, each dipole 12 inside the base material becomes unstable. Then, each dipole 12 tries to return to the state shown in FIG. At this time, energy is consumed. Through such displacement of the dipole 12 inside the base material 11 and energy due to the restoring action of the dipole 12, the effect of transmitting or insulating vibration energy, that is, damping, is obtained. Conceivable.
  • NBR is used as a component constituting the base material 11, and since NBR originally has a large amount of dipole moment inside the molecule, higher damping properties can be secured.
  • a polar macromolecule may have a large dipole moment in the molecule.
  • the polar polymer include polyvinyl chloride, chlorinated polyethylene, acrylic rubber (ACR), styrene-butadiene rubber (SBR), and chloroprene rubber (CR). You can also blend more than one to NBR. These polar polymers are also excellent in mechanical strength and workability.
  • the anti-vibration rubber of the present invention can be used in a wide range of fields such as automobiles, interior materials, building materials, and home appliances.
  • the operating temperature range specifically, 20 ° C to 40 ° C
  • the operating temperature range specifically, 20 ° C to 40 ° C
  • It exhibits the best damping properties and is suitable as an anti-vibration material.
  • the anti-vibration rubber of the present invention uses NBR having a glass transition point in the operating temperature range as a base material in order to maximize the damping of vibration energy in the operating temperature range. Further, the anti-vibration rubber of the present invention is obtained by adding a plasticizer such as di-12-ethylhexyl phthalate (D ⁇ P), dibutyl phthalate (DBP), diisononyl phthalate (DI NP) to an acrylonitrile-butadiene copolymer. Accordingly, the glass transition point (Tg) can be provided in the operating temperature range of 20 ° C to 40 ° C.
  • a plasticizer such as di-12-ethylhexyl phthalate (D ⁇ P), dibutyl phthalate (DBP), diisononyl phthalate (DI NP)
  • 2 HPMMB in the present invention is an active ingredient that dramatically increases the amount of dipole moment in the base material. By blending the active ingredient, 2 HPMMB increases the amount of dipole moment in the base material NBR. Can be increased.
  • the amount of dipole moment generated in NBR which is the base material 11 of the anti-vibration rubber of the present invention
  • the magnitude of vibration energy is determined by adding an active ingredient to this.
  • the amount will increase by a factor of three or ten.
  • the energy consumption due to the dipole restoring action when the vibrational energy is transmitted will also increase dramatically, and it is thought that damping properties far beyond the predictions will occur.
  • the amount of the above 2HPMMB is preferably 10 to 300 parts by weight based on 100 parts by weight of NBR.
  • the amount of 2HPMMB is less than 10 parts by weight, the effect of increasing the dipole moment cannot be sufficiently obtained by adding the active ingredient, and if the amount of 2HPMMB exceeds 300 parts by weight, However, they may not be fully compatible.
  • a filter such as my scales, glass pieces, glass fiber, carbon fiber, calcium carbonate, barite, precipitated barium sulfate, etc.
  • the anti-vibration rubber of the present invention can be obtained by compounding the components constituting the base material and the active component, and, if necessary, a filler.
  • the form thereof is sheet-like, block-like, granular, or fibrous.
  • various forms can be adopted according to the purpose and use form.
  • the vibration isolation rubber can change the resonance frequency by changing the shape and size, the shape and size may be appropriately determined according to the application and use form.
  • FIG. 1 is a schematic diagram showing a dipole in a base material.
  • FIG. 2 is a schematic diagram showing a dipole state in the base material when vibration energy is transmitted.
  • 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 absolute spring constants of the example and the comparative example.
  • FIG. 5 is a graph showing storage spring constants of the example and the comparative example.
  • FIG. 6 is a graph showing the loss spring constant of the example and the comparative example.
  • FIG. 7 is a graph showing the loss coefficient of the example and the comparative example.
  • Table 1 shows the composition of Examples and Comparative Examples.
  • Examples and comparative examples conform to JIS as shown in Table 2 and Figs. 4 to 7 Then, a physical property evaluation test was performed. As a result, the embodiment has significantly larger absolute spring constant, storage spring constant and loss spring constant than the comparative example. It has been found that it has excellent vibration damping effect. In addition, the rebound resilience of the example is remarkably smaller than that of the comparative example, whereby the example has a high damping property, consumes energy due to the restoring action of the dipole in the base material NBR, and has an insulating property for transmitting vibration energy. Alternatively, it was found that transmission mitigation performance was exhibited.
  • the absolute spring constant of the vibration-proof rubber of the present invention is preferably 2 to 5 (N / mm).
  • the storage spring constant of the vibration-proof rubber of the present invention is preferably 2 to 5 (N / mm).
  • the loss spring constant of the rubber vibration insulator of the present invention is preferably 2 to 5 (N / mm).
  • the loss coefficient of the rubber cushion of the present invention is preferably 0.5 to 5 (ta ⁇ ).

Landscapes

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

Abstract

L'invention concerne un isolant en caoutchouc pour vibrations qui présente de grandes propriétés d'amortissage efficaces pour supprimer ou atténuer des vibrations produites par une source de vibrations, par exemple un véhicule à moteur, un matériau intérieur, un matériau de construction, un appareil électroménager etc. L'isolant est caractérisé en ce qu'il comprend un caoutchouc acrylonitrile/butadiène comme matrice, et, incorporé dans la matrice, un 2-[2'-hydroxy-3'-(3'', 4'', 5'', 6''-tétrahydrophtalimidométhyle)-5'-méthylephényle] benzotriazole comme ingrédient actif afin d'augmenter le moment dipolaire de la matrice.
PCT/JP2000/001847 2000-03-27 2000-03-27 Isolant en caoutchouc pour vibrations WO2001072891A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2000/001847 WO2001072891A1 (fr) 2000-03-27 2000-03-27 Isolant en caoutchouc pour vibrations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2000/001847 WO2001072891A1 (fr) 2000-03-27 2000-03-27 Isolant en caoutchouc pour vibrations

Publications (1)

Publication Number Publication Date
WO2001072891A1 true WO2001072891A1 (fr) 2001-10-04

Family

ID=11735830

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2000/001847 WO2001072891A1 (fr) 2000-03-27 2000-03-27 Isolant en caoutchouc pour vibrations

Country Status (1)

Country Link
WO (1) WO2001072891A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005007750A1 (fr) * 2003-07-17 2005-01-27 Cci Corporation Composition d'amortissement
JP2007186583A (ja) * 2006-01-12 2007-07-26 Sumitomo Rubber Ind Ltd 高減衰ゴム

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0897675A1 (fr) * 1996-05-10 1999-02-24 Shishiai-Kabushikigaisha Composition de conversion d'energie
JPH1192674A (ja) * 1997-09-17 1999-04-06 Tokai Rubber Ind Ltd 高減衰材料組成物
JPH11106580A (ja) * 1997-10-02 1999-04-20 Tokai Rubber Ind Ltd 高減衰材料組成物
JPH11172122A (ja) * 1997-12-10 1999-06-29 Tokai Rubber Ind Ltd 高減衰材料組成物

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0897675A1 (fr) * 1996-05-10 1999-02-24 Shishiai-Kabushikigaisha Composition de conversion d'energie
JPH1192674A (ja) * 1997-09-17 1999-04-06 Tokai Rubber Ind Ltd 高減衰材料組成物
JPH11106580A (ja) * 1997-10-02 1999-04-20 Tokai Rubber Ind Ltd 高減衰材料組成物
JPH11172122A (ja) * 1997-12-10 1999-06-29 Tokai Rubber Ind Ltd 高減衰材料組成物

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005007750A1 (fr) * 2003-07-17 2005-01-27 Cci Corporation Composition d'amortissement
JP2007186583A (ja) * 2006-01-12 2007-07-26 Sumitomo Rubber Ind Ltd 高減衰ゴム
JP4700499B2 (ja) * 2006-01-12 2011-06-15 住友ゴム工業株式会社 高減衰ゴム

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