WO1999038922A1 - Materiau de revetement anti-vibrations - Google Patents

Materiau de revetement anti-vibrations Download PDF

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Publication number
WO1999038922A1
WO1999038922A1 PCT/JP1998/000445 JP9800445W WO9938922A1 WO 1999038922 A1 WO1999038922 A1 WO 1999038922A1 JP 9800445 W JP9800445 W JP 9800445W WO 9938922 A1 WO9938922 A1 WO 9938922A1
Authority
WO
WIPO (PCT)
Prior art keywords
base resin
vibration damping
active ingredient
damping paint
weight
Prior art date
Application number
PCT/JP1998/000445
Other languages
English (en)
Japanese (ja)
Other versions
WO1999038922A8 (fr
Inventor
Masamitsu Muto
Takeshi Hirata
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/JP1998/000445 priority Critical patent/WO1999038922A1/fr
Publication of WO1999038922A1 publication Critical patent/WO1999038922A1/fr
Publication of WO1999038922A8 publication Critical patent/WO1999038922A8/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes

Definitions

  • the present invention relates to a vibration damping paint applied to a place where vibration occurs, such as an automobile, an interior material, a building material, and a household electric appliance.
  • the present invention relates to a vibration-damping paint which is less susceptible to deformation, swelling, and cracking due to baking and drying, and less occurrence of bright cracks due to shrinkage of a base resin due to cooling after baking and drying.
  • Background Art Conventionally, in places where vibration occurs, such as in automobiles, interior materials, building materials, and home electric appliances, a sheet-shaped vibration-damping sheet has been generally used as a member for absorbing the vibration energy. However, in the case of a damping sheet, it must first be cut into a size and shape corresponding to the application area.
  • damping sheet is attached to the application area using an adhesive or a pressure-sensitive adhesive, most of the attaching work is manual, and there was a problem that the working efficiency was poor.
  • the damping sheet cannot be pasted on curved surfaces or narrow gaps, or it can be easily occupied by shells, but it can easily be peeled off, or it takes a lot of time to paste. And time was required.
  • viscoelastic polymers such as rubber, plastic, and asphalt, these have been dispersed in water to form an emulsion, and a filler such as my scale has been added. So-called damping paints have been proposed.
  • the damping layer can be easily formed simply by spraying the damping paint to the application area, and the work of cutting and pasting as in the case of the damping sheet is not required.
  • a vibration damping layer can be easily formed even on a curved surface portion or a narrow gap portion.
  • the damping paint since the damping paint is simply sprayed on the applicable portion, the work can be performed using a robot or the like, and there is an advantage that work efficiency can be greatly improved.
  • this damping paint is in the form of an emulsion in which the base and fillers are dispersed in water or alcohol.
  • a coating film with a thickness of 3 mm or 4 mm is formed to enhance the vibration damping performance, the deformation and swelling of the coating film also increase, making it difficult to suppress the occurrence. there were.
  • the resulting coating film has poor elasticity as compared with those based on a rubber or asphalt, so that the base resin is cooled by cooling after baking and drying. There was a problem that it shrank and caused a bright crack.
  • the present invention has been made in view of the above-mentioned circumstances, and it has been found that deformation, swelling, and cracks due to baking and drying, and the occurrence of bright cracks due to shrinkage of the base resin due to cooling after baking and drying, are avoided.
  • the object of the present invention is to propose a small amount of damping paint.
  • the vibration damping paint of the present invention will be described in detail.
  • the vibration damping paint of the present invention contains a gelling agent, a nonionic surfactant having a cloud point of 60 ° C to 90 ° C, a water-soluble polymer, and an ionic crosslinking agent. It does.
  • the base resin examples include unsaturated carboxylic acids such as acrylonitrile, acrylic acid, methacrylic acid, itaconic acid, and fumaric acid, and polymers of the alkyl esters thereof, copolymers with styrene, and the like, or polyvinyl chloride, polyether.
  • unsaturated carboxylic acids such as acrylonitrile, acrylic acid, methacrylic acid, itaconic acid, and fumaric acid
  • Tylene, polypropylene, ethylene-vinyl acetate copolymer, polyurethane, polyvinylidene fluoride, polyisoprene, polystyrene, chlorinated polyethylene and the like can be mentioned.
  • One or more of these are dispersed in water or alcohol and used in the form of emulsion.
  • the performance is best exhibited in the operating temperature range (120 ° C to 80 ° C) to which the damping coating is applied, such as automobiles, interior materials, building materials, and home appliances. Further, those having a glass transition point (T g) in the operating temperature range are preferable.
  • the gelling agent gels the base resin emulsion. As described above, when the coating is baked and dried after spraying the damping paint to the application area, the water inside the coating film boils and evaporates at once, causing bubbles to be formed, resulting in deformation, swelling, and cracking of the coating. I do.
  • Known gelling agents having such an action include, for example, calcium acetate, calcium phosphate, calcium nitrate, ferrous sulfate, ferrous nitrate, nickel acetate, nickel sulfate, nickel nitrate, magnesium acetate , Magnesium sulfate, magnesium nitrate, copper sulfate, copper nitrate, zinc acetate, zinc sulfate, zinc nitrate, aluminum acetate, aluminum phosphate, aluminum sulfate, and aluminum nitrate.
  • Nonionic surfactants with a cloud point of 60 ° C to 90 ° C for example, when the temperature reaches 60 ° C or 90 ° C, the surface activity that had been acting until then decreases.
  • a surfactant with the property of having When a surfactant having such properties is used in combination, the damping paint is liquid at room temperature due to the action of the surfactant, but the temperature of the coating film is increased by baking and drying. When the surfactant reaches the cloud point temperature of 90 ° C or 90 ° C, the surface activity of the surfactant decreases, and the gelling of the coating film proceeds due to the action of the gelling agent. This leads to the effect of suppressing deformation, swelling and cracking of the coating film.
  • nonionic surfactant having a cloud point of 60 ° C. to 90 ° C. examples include those containing phenol ethoxylate as a main component.
  • the content of the gelling agent and the nonionic surfactant is 0.75 to 3.5% by weight for the gelling agent, and 1.34 to 3.5% by weight for the nonionic surfactant. A range of% is preferred.
  • gelation is weak, and it is not possible to sufficiently suppress the deformation, swelling, and cracking of the coating film during baking and drying.
  • the content of the agent exceeds 3.5% by weight, the gelation is too strong, the viscosity of the paint at the time of application becomes high (the effect of the surfactant is not sufficiently exerted), and the spray becomes clogged. May occur.
  • the content of the nonionic surfactant is less than 1.34, the surface activity is weak, gelation by the gelling agent proceeds, and the viscosity of the paint at the time of application increases.
  • the content of the nonionic surfactant exceeds 3.5% by weight, The surface activity becomes too strong, and the gelation of the coating film does not proceed sufficiently during baking and drying.
  • the ionic cross-linking agent suppresses the generation of cracks in the coating film during baking and drying of, for example, zinc oxide, and the content thereof is preferably in the range of 0.5 to 2.0% by weight.
  • the water-soluble polymer imparts elasticity to the base resin, so that even if the base resin shrinks due to cooling after baking and drying, the occurrence of bright cracks can be suppressed.
  • the content of the water-soluble polymer is preferably in the range of 0.05 to 0.40% by weight.
  • the vibration damping paint of the present invention has a form in which an active ingredient for increasing the amount of dipole moment in the same base resin is included in the base resin emulsion for the purpose of dramatically improving the vibration damping performance. Can also be taken.
  • Fig. 1 shows the arrangement of the dipoles 12 inside the base resin 11 constituting the coating film 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 a displacement in the dipoles 12 where the base resin 11 is located, and as shown in FIG. 2, each dipole 12 in the base resin 11 is displaced. It will be in an unstable state, and each dipole 1 2 will try to return to a stable state as shown in Figure 1. At this time, energy is consumed.
  • the vibration energy is absorbed (vibration damping performance) through such displacement of the dipole inside the base resin 11 and energy consumption by the restoring action of the dipole.
  • the active ingredient dramatically increases the amount of dipole moment in the base resin.
  • the active ingredient itself has a large amount of dipole moment, or the active ingredient itself has a small amount of dipole moment, but the inclusion of the active ingredient results in a dipole in the base resin.
  • the amount of dipole moment generated in the base resin 11 constituting a coating film under a predetermined temperature condition and vibration energy is determined by the fact that the active ingredient is contained in the base resin. As shown in Fig. 3, under the same conditions, the amount will increase by a factor of three or ten.
  • N N-dicyclohexylbenzothiazyl-1-sulfenamide
  • DCHBSA 2-mercaptobenzothiazole
  • MTT 2-mercaptobenzothiazole
  • MBTS dibenzothiazyl sulfide
  • CBS Cyclohexyl benzothiazyl-1-sulfenamide
  • BSS N-tert-butylbenzothiazyl-12-sulfenamide
  • OBS N-oxycetylene Lenbenzothiazilyl 2-sulfenamide
  • N N —Compounds containing a mercaptobenzothiazyl group, such as diisopropylbenzothiazirulu-2-sulfenamide (DPBS), and a benzotriazole in which an azole group is bonded to the benzene
  • the content of the above-mentioned active ingredient is preferably from 100 to 100 parts by weight based on 100 parts by weight of the base resin.
  • the content of the active ingredient is less than 100 parts by weight, the effect of increasing the amount of the dipole moment cannot be obtained, and when the content of the active ingredient exceeds 100 parts by weight, Insufficient compatibility or insufficient film strength may be obtained.
  • the amount of the dipole moment varies depending on the type of the base resin and the active component described above.
  • the base resin and active component should be selected and used so as to have the largest dipole moment at that time. Is desirable.
  • the above-mentioned active ingredients are not limited to one kind, and two or more kinds can be mixed. Also this In this case, at least two or more types of active components having different glass transition points can be included in the base resin to extend the temperature range in which the vibration damping property is exhibited.
  • the vibration-damping paint containing the active ingredient in the base resin emulsion significantly increases the amount of the dipole moment in the coating film, thereby exhibiting excellent vibration-damping performance.
  • the amount of this dipole moment is expressed as the difference in dielectric constant (£ ') between A and B shown in Fig. 4.
  • FIG. 4 is a graph showing the relationship between the dielectric constant ⁇ ′) and the dielectric loss factor (£ ⁇ ).
  • dielectric loss factor dielectric constant (£ ') X dielectric loss tangent (tan (5).
  • the present inventor has studied through the research on vibration damping paints, The higher the £ ⁇ ), the higher the loss factor (r?) And the loss tangent (t anS). That is, the dielectric loss factor (£ ⁇ ), which expresses the electronic properties of a polymer, and the dynamics Based on this finding, there is a correlation between the loss coefficient () and the loss tangent (tancS), which indicate the properties, and based on this finding, the dielectric loss factor (£) in the coating film of the vibration damping paint of the present invention.
  • the base resin emulsion further improved the damping performance Fillers such as my scales, glass pieces, glass fiber, carbon fiber, calcium carbonate, barite, and precipitated barium sulfate are filled for the purpose.
  • the filling amount of the filler is preferably from 10 to 90% by weight. For example, when the filling amount of the filler is less than 10% by weight, sufficient improvement in vibration damping performance is not observed even when the filler is filled, and conversely, the filling amount of the filler is reduced to 90% by weight.
  • this damping paint is obtained by dissolving a base resin, a dispersing medium such as water and alcohol, a filler, and other components containing an active ingredient, a dispersant, and a thickener as necessary, such as a dissolver or a bumper.
  • FIG. 1 is a schematic diagram showing dipoles in a coating film.
  • FIG. 2 is a schematic diagram showing a state of a dipole in a coating film when vibration energy is transmitted.
  • Fig. 3 is a schematic diagram showing the state of the dipole in the coating film when the active ingredient is blended.
  • FIG. 5 is a graph showing the loss coefficient () at each temperature in Examples 1 to 3.
  • Example 1 Was applied to the surface density of the steel plate of the vibration damping paint thickness 0. 8 mm according to Example 1 and Comparative Examples 1 to 4 containing the ingredients shown in Table 1 is 4 kg / m 2, 16 CTC In 2
  • the coating was formed on the steel sheet by baking and drying for 0 minutes, and then allowed to cool and then bake and dry again at 160 ° C for 20 minutes.
  • the formed coating film was visually inspected for blisters and cracks, and the results are shown in Table 2 below.
  • the properties of the coating film were evaluated as “X” when the coating film was swollen or cracked, and as “ ⁇ ” when there was no swelling or cracking. Table 2
  • the loss coefficient (7?) Of the coating film according to Example 1 was measured. The results are shown in FIG.
  • the loss coefficient (7?) was measured using an electromagnetic vibration detector (MT-1, A202) manufactured by Denshi Sokki Co., Ltd.
  • MT-1, A202 electromagnetic vibration detector
  • those coated so as to have an areal density of 2 kg / m 2 (Example 2) and those coated so as to have an areal density of 3 kg / m 2 were used in the same manner as in Example 1.
  • the loss factor (77) was measured and is shown in FIG.

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Paints Or Removers (AREA)

Abstract

L'invention concerne un matériau de revêtement anti-vibrations destiné à être appliqué sur des supports exposés à des vibrations, tels que les véhicules à moteurs, les matériaux d'aménagement intérieur, les matériaux de construction, et les appareils électroménagers. L'invention concerne en particulier un matériau de revêtement présentant une résistance améliorée à la déformation, au cloquage et au craquelage dus au retrait de la résine de base lors du refroidissement après l'opération de cuisson/séchage. Ce matériau de revêtement est caractérisé en ce qu'il contient une émulsion de résine de base, un agent gélifiant, un tensioactif non ionique présentant un point de trouble compris entre 60° et 90 °C, un polymère soluble à l'eau, et un agent de réticulation ionique.
PCT/JP1998/000445 1998-02-02 1998-02-02 Materiau de revetement anti-vibrations WO1999038922A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP1998/000445 WO1999038922A1 (fr) 1998-02-02 1998-02-02 Materiau de revetement anti-vibrations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP1998/000445 WO1999038922A1 (fr) 1998-02-02 1998-02-02 Materiau de revetement anti-vibrations

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WO1999038922A1 true WO1999038922A1 (fr) 1999-08-05
WO1999038922A8 WO1999038922A8 (fr) 1999-09-23

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001040391A1 (fr) * 1999-12-02 2001-06-07 Shishiai-Kabushikigaisha Materiau pour revetement amortissant les vibrations
WO2007110989A1 (fr) * 2006-03-27 2007-10-04 Cci Corporation revetement d'attenuation
JP2008248188A (ja) * 2007-03-30 2008-10-16 Cci Corp 減衰性塗料
JP2008248185A (ja) * 2007-03-30 2008-10-16 Cci Corp 減衰性塗料
WO2009139314A1 (fr) * 2008-05-09 2009-11-19 株式会社日本触媒 Composition d’émulsion pour matériau d’amortissement des vibrations
JP2009270063A (ja) * 2008-05-09 2009-11-19 Nippon Shokubai Co Ltd 制振材用エマルション組成物
JP2010053210A (ja) * 2008-08-27 2010-03-11 Nippon Shokubai Co Ltd 制振材用エマルション組成物及び制振材配合物
CN105860719A (zh) * 2016-06-06 2016-08-17 青岛爱尔家佳新材料有限公司 一种可喷涂烘烤型水性阻尼涂料及其制备方法
JP2018021179A (ja) * 2016-06-23 2018-02-08 日本合成化学工業株式会社 水性塗工液、インク受容層用塗工液及び多層構造体

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58141251A (ja) * 1982-02-16 1983-08-22 Kuraray Co Ltd 制振性塗料

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58141251A (ja) * 1982-02-16 1983-08-22 Kuraray Co Ltd 制振性塗料

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001040391A1 (fr) * 1999-12-02 2001-06-07 Shishiai-Kabushikigaisha Materiau pour revetement amortissant les vibrations
WO2007110989A1 (fr) * 2006-03-27 2007-10-04 Cci Corporation revetement d'attenuation
JP2008248188A (ja) * 2007-03-30 2008-10-16 Cci Corp 減衰性塗料
JP2008248185A (ja) * 2007-03-30 2008-10-16 Cci Corp 減衰性塗料
WO2009139314A1 (fr) * 2008-05-09 2009-11-19 株式会社日本触媒 Composition d’émulsion pour matériau d’amortissement des vibrations
JP2009270063A (ja) * 2008-05-09 2009-11-19 Nippon Shokubai Co Ltd 制振材用エマルション組成物
JP2010053210A (ja) * 2008-08-27 2010-03-11 Nippon Shokubai Co Ltd 制振材用エマルション組成物及び制振材配合物
CN105860719A (zh) * 2016-06-06 2016-08-17 青岛爱尔家佳新材料有限公司 一种可喷涂烘烤型水性阻尼涂料及其制备方法
JP2018021179A (ja) * 2016-06-23 2018-02-08 日本合成化学工業株式会社 水性塗工液、インク受容層用塗工液及び多層構造体

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Publication number Publication date
WO1999038922A8 (fr) 1999-09-23

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