JP2008114501A - Manufacturing method of viscoelastic damper - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a manufacturing method of a highly reliable viscoelastic damper which shows excellent adhesion between a viscoelastic body and a metallic plate, even in case a material with high vibration control properties, i.e. the viscoelastic body with high rigidity is used. <P>SOLUTION: The viscoelastic damper is manufactured by a method comprising a process (I) to apply a primer composition (a) containing a styrene-based block copolymer to the surface of the metallic plate (b) and a process (II) to thermally fusion-bond a styrene-based viscoelastic body (c) to the metallic plate (b) with the surface treated by the process (I) while heating the viscoelastic body (c) at 100 to 230°C. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a method for producing a viscoelastic damper using a primer composition.

  In recent years, a seismic control structure in which a viscoelastic damper is attached to a building and the seismic performance of the building is improved by its damping effect is becoming widespread. Various types of viscoelastic dampers have been proposed and put to practical use. In particular, a viscoelastic wall (Patent Document 1) installed in the form of a wall between upper and lower beams or a brace damper having a brace shape ( A type called “Patent Document 2” is widely used. The viscoelastic damper is based on a structure in which a metal and a viscoelastic body are laminated. When a building is deformed by an earthquake or a wind sway, a shear deformation occurs in the viscoelastic body through the metal. At this time, since the viscoelastic body absorbs vibration energy and converts it into thermal energy, a vibration control effect can be obtained. That is, in order to exert the vibration control effect, it is necessary that the metal and the viscoelastic body are sufficiently bonded.

  The properties required for the viscoelastic body are damping properties, adhesion to metal, long-term durability, and the like. Various viscoelastic bodies have been developed and marketed. Typical examples include styrene-based, acrylic-based, diene-based, and silicon-based materials. Among these, the styrene-based viscoelastic body is particularly excellent in the balance between the damping property and the temperature dependency of the rigidity with respect to the vibration control characteristics.

  However, most of the styrenic viscoelastic materials include a styrene block copolymer composed of at least one selected from a conjugated diene polymer block, a hydrogenated conjugated diene polymer block, and an isobutylene polymer block, and a styrene polymer block. It is a resin composition having a coalescence as a main component, which is basically a low-polarity material and has a problem in adhesion to metal.

  As a method for improving the adhesion between the metal and the styrene-based viscoelastic body, a method in which the viscoelastic body is heated to 100 ° C. to 230 ° C. and thermally fused to the metal whose surface has been blasted is often used. By blasting (processing) the metal, the adhesion can be improved by the anchor effect.

  However, in recent years, a viscoelastic body with higher rigidity has been demanded from the viewpoint of further improving seismic control characteristics, but the anchor effect by the conventional blast treatment alone is used when a viscoelastic body with high rigidity is used. A sufficient adhesion effect could not be obtained, and interface peeling sometimes occurred due to a large vibration. Therefore, stronger adhesiveness is required for the demand (need) of a more rigid viscoelastic body.

  As a metal surface treatment method for improving adhesion, a primer treatment which is a chemical treatment is widely known in addition to a blast treatment (physical treatment). For example, a primer composition comprising a polyorganosiloxane resin having a functional group at a terminal, an amino group-containing silane compound, an alkoxysilyl group-containing polyisobutylene, a tin (IV) compound as a catalyst, and an organic solvent is known (Patent Document) 3). Although it is a so-called reactive primer, it is usually assumed to be used near room temperature, and in the production conditions where the primer is exposed to a high temperature of 100 ° C. to 230 ° C., the main component of the primer is partially due to thermal deterioration. It may solidify and inhibit adhesiveness.

JP 2001-049889 A JP 2002-147052 A JP 2000-86990 A

  The object of the present invention is to produce a highly reliable viscoelastic damper with excellent adhesion between a viscoelastic body and a metal plate even when a highly damping material, that is, a highly rigid viscoelastic body is used. Is to provide a way to do.

  As a result of intensive studies in order to solve the above problems, the present invention has been completed.

  That is, the present invention includes a step (I) of applying a primer composition (a) containing a styrenic block copolymer to the surface of a metal plate (b), and a metal plate surface-treated in step (I) ( It relates to a method for producing a viscoelastic damper, characterized in that b) has a step (II) of heat-sealing the styrenic viscoelastic body (c) while heating it at a temperature of 100 to 230 ° C.

  In a preferred embodiment, the primer composition (a) comprises a styrene-isobutylene-styrene triblock copolymer, a styrene-hydrogenated isoprene-styrene triblock copolymer, a styrene-hydrogenated butadiene-styrene triblock copolymer. There is a method for producing a viscoelastic damper characterized by containing at least one selected from coalescence.

  As a preferred embodiment, there is a method for producing a viscoelastic damper, wherein the primer composition (a) contains a styrene-isobutylene-styrene triblock copolymer.

  As a preferred embodiment, the metal plate (b) is at least one selected from a general structural steel plate, a cold rolled steel plate, a carbon steel plate, a stainless steel plate, and a low alloy steel plate, and the metal surface is blasted. There is a method of manufacturing a viscoelastic damper characterized by the above.

  As a preferred embodiment, the storage rigidity (G ′) of the styrenic viscoelastic body (c) measured at 20 ° C., 0.5 Hz, 100% strain and shear mode is 0.100 MPa or more. There is a method for manufacturing a viscoelastic damper.

  As a preferred embodiment, there is a method for producing a viscoelastic damper, wherein the styrenic viscoelastic body (c) contains a styrene-isobutylene diblock copolymer.

  The primer composition (a) containing a styrenic block copolymer is primer-treated on the surface of the metal plate (b) (I), and the metal plate (b) surface-treated in the step (I) is styrene-based. According to the method for producing a viscoelastic damper according to the present invention, which includes the step (II) of fusing the viscoelastic body (c) to a temperature of 100 to 230 ° C., the metal plate and the styrenic viscoelastic body Adhesion can be improved. As a result, it is possible to obtain a viscoelastic damper having excellent vibration control and high reliability.

  The method according to the present invention will be described in detail below.

  In the present invention, a styrene block copolymer is used as the primer composition (a). This is because it is excellent in heat resistance at high temperatures and does not deteriorate due to thermal deterioration. Also, since the styrene block copolymer, which is the main component of the styrene viscoelastic body, and the styrene block copolymer used in the primer composition have the same or similar molecular structure, the polarity of the resin is extremely high. This is because it is close and excellent in adhesiveness. Examples of the styrenic block copolymer include styrene polymer block-isobutylene polymer block-triblock copolymer (hereinafter abbreviated as SIBS) composed of styrene polymer block, styrene polymer block-hydrogenated isoprene polymer block- A triblock copolymer comprising a styrene polymer block (hereinafter abbreviated as SEPS), a styrene polymer block-hydrogenated butadiene polymer block-a triblock copolymer comprising a styrene polymer block (hereinafter abbreviated as SEBS), Triblock copolymer (hereinafter abbreviated as SIS) composed of styrene polymer block-isoprene polymer block-styrene polymer block, triblock copolymer composed of styrene polymer block-butadiene polymer block-styrene polymer block (Hereinafter abbreviated as SBS) ), And the like. Among these, it is preferable to use SIBS, SEPS, and SEBS which are excellent in heat resistance, and it is particularly preferable to use SIBS. Since SIBS is a fully saturated styrene block copolymer having no double bond, it is extremely excellent in weather resistance.

  The manufacturing method of SIBS is not specifically limited, For example, what is necessary is just to follow the method described in US Pat. No. 4,946,899. As SEPS, SEBS, SIS, and SBS, commercially available products can be used, and examples thereof include SEPTON 4033 (manufactured by Kuraray Co., Ltd.), KRATON G1650 (manufactured by Kraton Polymer Co., Ltd.), and the like.

  The styrene content and molecular weight of the styrenic block copolymer are not particularly limited, but are sufficiently meltable at this temperature because they are heated to a temperature of 100 ° C. to 230 ° C. when the metal plate and the viscoelastic body are bonded. Preferably it is low. As an index of meltability, melt flow rate (MFR) is suitable, and at processing temperature, MFR (g / 10 min) is preferably 1 or less, particularly preferably 0.1 or less.

  The primer composition (a) preferably contains an organic solvent as a diluent in addition to the styrenic block copolymer in terms of handleability. Any organic solvent may be used as long as it can dissolve the block copolymer. For example, aromatic hydrocarbons such as toluene and xylene, aliphatic hydrocarbons such as hexane, heptane, octane and decane, cyclohexane, cyclohexene, and methylcyclohexane. Alicyclic hydrocarbons such as ethanol, aliphatic alcohols such as ethanol and isopropyl alcohol, ketone solvents such as acetone, methyl isobutyl ketone and methyl ethyl ketone, and acetates such as methyl acetate and ethyl acetate. These may be used alone or in combination of two or more. Among these, aromatic hydrocarbons are preferable from the viewpoint of solubility, and alkyl group-substituted aromatic hydrocarbons such as toluene and xylene are particularly preferable. In some cases, halogen solvents such as carbon tetrachloride, dichloromethane, and 1,2-dichloroethane can be used.

  In the primer composition (a), the content of the styrenic block copolymer is preferably 1 to 60% by weight, and more preferably 5 to 30% by weight. When the amount is 1% by weight or less, a sufficient primer effect (adhesion improvement effect) cannot be obtained, and when it is 60% by weight or more, the solution viscosity is high and the handling property (coating property) is inferior.

  The primer composition (a) may contain additives such as an antioxidant and an ultraviolet absorber.

  In the present invention, the metal plate (b) is preferably a general structural steel plate, a cold rolled steel plate, a carbon steel plate, a stainless steel plate, a low alloy steel plate, or the like. As surface treatment, it is preferable to use these after blasting. As the blast treatment, sand blast treatment and shot blast treatment are preferable, and it is preferable to process so that Rz (10-point average roughness) is 10 to 60 μm. When Rz is 10 to 60 μm, a high anchor effect can be obtained.

  In the present invention, the styrene-based viscoelastic body (c) means a viscoelastic body mainly composed of a styrene-based block copolymer (styrene-based thermoplastic elastomer). Examples of the styrene-based block copolymer include: SIBS, diblock copolymer (hereinafter abbreviated as SIB) composed of styrene polymer block-isobutylene polymer block, SEPS, SEBS, SIS, SBS and the like. Styrenic block copolymers can be used in combination of two or more. Among these, it is preferable to use SIBS or SIB which is excellent in damping characteristics.

  The styrenic viscoelastic body (c) may contain at least one of a tackifier resin and a plasticizer in addition to the styrenic block copolymer.

  Although there is no limitation in particular as a compounding quantity, It is preferable that it is 20-200 weight part with respect to 100 weight part of styrene-type block copolymers. The tackifier resin has the effect of increasing the rigidity of the composition, and the plasticizer has the effect of decreasing the rigidity. Therefore, the blending amount thereof may be adjusted according to the target rigidity.

  The tackifying resin is a low-molecular resin having a number average molecular weight of 300 to 3,000 and a softening point based on the ring and ball method defined in JIS K-2207 of 60 to 150 ° C., which includes rosin and rosin derivatives, polyterpene resins, Aromatic modified terpene resins and their hydrides, terpene phenol resins, coumarone and indene resins, aliphatic petroleum resins, alicyclic petroleum resins and their hydrides, aromatic petroleum resins and their hydrides, aliphatic aromas A low molecular weight polymer of a group copolymer petroleum resin, a dicyclopentadiene petroleum resin and a hydride thereof, styrene or substituted styrene is exemplified. In general, the styrenic block copolymer comprises at least one selected from a conjugated diene polymer block, a hydrogenated conjugated diene polymer block and an isobutylene polymer block, and a styrene polymer block. The imparting resin has an effect of moving at least one Tg selected from a conjugated diene polymer block of a styrene block copolymer, a hydrogenated product of a conjugated diene polymer block, and an isobutylene polymer block to a high temperature side. In order to achieve such an object, it is desirable to add a tackifier resin that is compatible with at least one selected from a conjugated diene polymer block, a hydrogenated conjugated diene polymer block, and an isobutylene polymer block. , For example, alicyclic petroleum resins and their hydrides, aliphatic petroleum resins, aromatic petroleum resins Hydrides, such as polyterpene resins are preferably used. In the same type of tackifier resin, the higher the softening point, the higher the Tg selected from the conjugated diene polymer block, the hydrogenated conjugated diene polymer block, and the isobutylene polymer block on the higher temperature side. A high softening point can be selected if the effect of transferring is high, and if it is desired to reduce the amount of the tackifier resin, a low softening point can be selected.

  Plasticizers include paraffinic process oil, naphthenic process oil, petroleum process oil such as aromatic process oil, dibasic acid dialkyl such as diethyl phthalate, dioctyl phthalate and dibutyl adipate, liquid polybutene, liquid poly Illustrative are low molecular weight liquid polymers such as isoprene, any of which can be used. Such a plasticizer has an effect of moving at least one Tg selected from a conjugated diene polymer block of a styrene block copolymer, a hydrogenated product of a conjugated diene polymer block, and an isobutylene polymer block to a low temperature side. In order to achieve such an object, a plasticizer compatible with at least one selected from a conjugated diene polymer block, a hydrogenated conjugated diene polymer block, and an isobutylene polymer block may be blended. Desirably, paraffinic process oil, naphthenic process oil, liquid polybutene, liquid polyisoprene and the like are preferably used.

  Moreover, a filler can also be mix | blended with a styrene-type viscoelastic body (c) as needed. Examples of the filler include powder fillers such as mica, carbon black, silica, calcium carbonate, talc, graphite, stainless steel, and aluminum; and fibrous fillers such as glass fiber and metal fiber. Among these, mica is preferable because it has an effect of improving the attenuation. Further, spot welding can be performed by containing various metal powders such as stainless steel powder and aluminum powder, metal fibers, or conductive particles such as carbon black and graphite.

  Examples of other compounding agents include stabilizers such as triphenyl phosphite, hindered phenol and dibutyl tin maleate; lubricants such as polyethylene wax, polypropylene wax and montanic acid wax; triphenyl phosphate, tricresyl phosphate, Flame retardants such as decabromobiphenyl, decabromobiphenyl ether, and antimony trioxide; pigments such as titanium oxide, zinc sulfide, and zinc oxide.

  The styrene-based viscoelastic body (c) preferably has a storage rigidity (G ′) of 0.100 MPa or more measured in a shear mode at 20 ° C., 0.5 Hz, 100% strain. This is because when the pressure is 0.100 MPa or more, high vibration control is obtained due to high rigidity. Moreover, since the vibration control property is high, the thickness of the material can be reduced or the surface property of the material can be reduced. That is, there is an advantage that the viscoelastic damper can be downsized and the cost can be reduced by reducing the amount of the viscoelastic body used.

  The method for producing the styrenic viscoelastic body (c) is not particularly limited, and is mechanically mixed using a melting pot equipped with a roll, a Banbury mixer, a kneader, a stirrer, or a single or twin screw extruder. The method can be used. At this time, it is also possible to heat as necessary. Moreover, after adding a compounding agent to a suitable solvent and stirring this, after obtaining the uniform solution of a composition, the method of distilling a solvent off can also be used. Furthermore, if necessary, the composition can be molded and crosslinked by a press machine or the like.

  In the present application, the surface of the metal plate (b) is primed by applying the primer composition (a) to the surface of the metal plate (b). Examples of the method for primer treatment of the primer composition (a) on the surface of the metal plate (b) include brush coating, dip coating, spray coating, and roll coating. The metal coating may be performed at room temperature. After coating, the metal plate (b) and the styrenic viscoelastic body (c) are bonded by drying by an appropriate method such as natural drying or forced heating drying. I do.

  As a method for bonding the metal plate (b) and the styrene-based viscoelastic body (c), it is preferable to perform heat fusion from the viewpoint of obtaining excellent adhesiveness. The temperature for heat sealing is preferably 100 ° C. to 230 ° C., more preferably 150 ° C. to 200 ° C. When the temperature is 100 ° C. or lower, the viscoelastic body is not sufficiently melted and sufficient adhesiveness may not be obtained. If it is 230 degreeC or more, the resin component of a viscoelastic body will be easy to thermally deteriorate.

  Hereinafter, the present invention will be described more specifically with reference to examples. In addition, this invention is not limited at all by these Examples, In the range which does not change the summary, it can change suitably.

(Production Example 1) [Production of styrene-isobutylene-styrene triblock copolymer (SIBS)]
After replacing the inside of the polymerization vessel of the 500 mL separable flask with nitrogen, add 97.6 mL of n-hexane (dried with molecular sieves) and 140.5 mL of butyl chloride (dried with molecular sieves) using a syringe. After cooling the polymerization vessel in a dry ice / methanol bath at −70 ° C., a polytetrafluoroethylene-made pressure-resistant glass liquefied collection tube with a three-way cock containing 47.7 mL (505.3 mmol) of isobutylene monomer is used. A liquid feeding tube was connected, and isobutylene monomer was fed into the polymerization vessel by nitrogen pressure. 0.097 g (0.42 mmol) of p-dicumyl chloride and 0.078 g (0.84 mmol) of N, N′-dimethylacetamide were added. Next, 1.66 mL (15.12 mmol) of titanium tetrachloride was further added to initiate polymerization. After stirring for 75 minutes from the start of polymerization, about 1 mL of the polymerization solution was extracted from the polymerization solution, and the reaction rate was confirmed. Subsequently, 5.50 g (52.8 mmol) of styrene monomer was added into the polymerization vessel. 75 minutes after adding the mixed solution, the reaction was terminated by adding a large amount of water.

The reaction solution was washed twice with water, the solvent was evaporated, and the resulting polymer was vacuum-dried at 60 ° C. for 24 hours to obtain the target block copolymer (hereinafter referred to as SIBS-1). As a result of gel permeation chromatography (GPC) analysis, the molecular weight of the obtained polymer was Mn 111,000. The styrene content calculated from the result of ¹ H-NMR measurement was 15.2% by weight.

(Production Example 2) [Production of styrene-isobutylene diblock copolymer (SIB)]
After replacing the inside of the polymerization container of the 500 mL separable flask with nitrogen, add 84.9 mL of n-hexane (dried with molecular sieves) and 122.2 mL of butyl chloride (dried with molecular sieves) using a syringe. After the polymerization vessel was placed in a dry ice / methanol bath at -70 ° C and cooled, a pressure-resistant glass liquefied collection tube with a three-way cock containing 78.3 mL (828.8 mmol) of isobutylene monomer was made of polytetrafluoroethylene. A liquid feeding tube was connected, and isobutylene monomer was fed into the polymerization vessel by nitrogen pressure. 0.217 g (1.4 mmol) of cumyl chloride and 0.13 g (1.4 mmol) of N, N′-dimethylacetamide were added. Next, 1.54 mL (14.0 mmol) of titanium tetrachloride was further added to initiate polymerization. After stirring for 120 minutes from the start of polymerization, about 1 mL of the polymerization solution was extracted from the polymerization solution, and the reaction rate was confirmed. Subsequently, 9.48 g (91.0 mmol) of styrene monomer was added into the polymerization vessel. 45 minutes after adding the mixed solution, the reaction was terminated by adding a large amount of water.

The reaction solution was washed twice with water, the solvent was evaporated, and the obtained polymer was vacuum dried at 60 ° C. for 24 hours to obtain the desired block copolymer (hereinafter referred to as SIB-1). As a result of gel permeation chromatography (GPC) analysis, the polymer obtained had a molecular weight of 40,300 for Mn. The styrene content calculated from the result of ¹ H-NMR measurement was 15.9% by weight.

(Production Example 3) [Production of styrene-based viscoelastic body]
SIB-1, 24 g and SEPTON 2002 (SEPS, manufactured by Kuraray Co., Ltd.) 6 g, Alcon P-100 (tackifying resin, manufactured by Arakawa Chemical Industries) 12 g and PW-380 (paraffin) synthesized by the method of Production Example 2 System process oil, manufactured by Idemitsu Kosan Co., Ltd. (3 g) was melt-kneaded with a Laboplast Mill (manufactured by Toyo Seiki Seisakusho Co., Ltd.) set at 150 ° C. for 15 minutes to obtain a viscoelastic body. Further, this viscoelastic body was hot-pressed at 100 ° C. for 10 minutes to obtain a sheet having a thickness of 5 mm. Further, the storage stiffness (G ′) of the obtained viscoelastic body measured at 20 ° C., 0.5 Hz, 100% strain and shear mode was 0.192 MPa, and the equivalent damping constant (heq) was 0.42. It was.

(Example 1)
0.5 g of SIBS-1 produced in Production Example 1 was dissolved in 9.5 g of toluene to obtain a primer composition. The primer composition was brushed on the surface of a steel plate (length 150 mm × width 50 mm × thickness 6 mm) shot blasted to Rz 20 μm, and then dried for 1 hour to obtain a primer-treated steel plate.

  Next, the viscoelastic body (5 cm × 5 cm square, thickness 5 mm) produced by the method of Production Example 3 was sandwiched between two steel sheets whose surfaces were primed. Around that, a silicon spacer was placed, and further clamped from the outside of the steel plate with a clamp for fixing. Next, the steel plate was placed in an oven set at a temperature of 200 ° C. and heated for 3 hours to melt the viscoelastic body, and this melt was adhered to the inner surface of the steel plate to simulate a small viscoelastic damper. A test body having a structure in which a viscoelastic body 2 was sandwiched between 1 was produced (see FIG. 1).

(Example 2)
A test specimen was prepared in the same manner as in Example 1 except that SEPTON 4033 (SEPS, manufactured by Kuraray Co., Ltd.) was used instead of SIBS-1.

(Example 3)
A test specimen was produced in the same manner as in Example 1 except that KRATON G1650 (SEBS, manufactured by Kraton Polymer Japan Co., Ltd.) was used instead of SIBS-1.

(Comparative Example 1)
A test specimen was prepared in the same manner as in Example 1 except that the primer composition was not used.

(Comparative Example 2)
A test specimen was prepared in the same manner as in Example 1 except that primer D-2 (manufactured by Toray Dow Corning Co., Ltd.), which is a primer for sealant, was used as the primer composition.

(Comparative Example 3)
The same procedure as in Example 1 was performed except that Chemlock 459X (manufactured by Road Far East, Inc.), which is a primer for polyolefin, was used as the primer composition.

(Test and measurement method)
(1) Adhesion test The adhesion between the steel sheet and the viscoelastic body was evaluated by a dynamic fracture test. The viscoelastic body was vibrated with a sin wave with a frequency of 0.5 Hz at a test temperature of 20 ° C. The measurement strain was 300% strain, 400% strain, 500% strain, 600% strain, 700% strain, and 800% strain, and vibration was applied for 5 cycles in this order. At this time, the strain at which the equivalent damping constant (heq) shows a minimum value was defined as deformability (%), and it was observed whether the material was finally destroyed (cohesive failure) or the interface was peeled between the steel plate and the viscoelastic material. When cohesive failure and interfacial debonding coexist, the area obtained by subtracting the peeled area from the original area (namely, the cohesive failure area) of the material pieces remaining on the steel sheet was also described.

The equivalent damping constant (heq) was calculated from the second wave load-displacement curve (history loop) based on the following formula (I).
Equivalent damping constant: heq = ΔW / 4πW (I)
[In the above formula, ΔW: load-strain loop area, W = τγmax × γmax / 2. Here, τγmax: maximum displacement load, and γmax: maximum displacement. ]
Servo pulser EHF-EG20kN-110L (manufactured by Shimadzu Corporation) was used for the dynamic fracture test.

(2) Rust prevention property The steel plates produced in Examples 1 to 3 and Comparative Examples 1 to 3 were left at room temperature for 1 month. The external appearance was visually observed. The case where there was no rust was indicated as “◯”, and the case where rust was generated was indicated as “X”.

(3) Non-coloring property The steel plate after preparation of the test piece was visually observed, and those whose surface was clearly colored were evaluated as x and those not colored as ◯.

  Examples 1 to 3 in which a primer composition mainly composed of a styrenic block copolymer was applied to a steel sheet surface, and then a styrene viscoelastic body was thermally fused to the steel sheet while being heated to a temperature of 100 to 230 ° C. The fracture state was 100% cohesive fracture, indicating excellent adhesion. Moreover, rust prevention property and non-coloring property were also favorable. On the other hand, in Comparative Example 1 in which no primer was used, the fracture state was inferior in 70% cohesive fracture and adhesion, and inferior in rust prevention. In Comparative Examples 2 and 3 using a commercially available reactive primer that does not contain a styrenic block copolymer, the fracture state is inferior to 10% cohesive failure or 50% cohesive failure and adhesion, and the steel plate after heating Was colored yellow and was inferior in terms of non-colorability.

As described above, after applying a primer composition mainly composed of a styrene block copolymer to the surface of the metal plate, the styrene viscoelastic material is heat-sealed to the metal plate while heating to a temperature of 100 to 230 ° C. According to the viscoelastic damper manufacturing method according to the present invention, it is understood that a highly reliable viscoelastic damper having excellent adhesion between the viscoelastic body and the metal plate can be manufactured.

(A) Sectional drawing of the test body for dynamic fracture tests produced by the hot melt method, (b) Top view of the test body of (a).

Explanation of symbols

1 ... Metal plate 2 ... Viscoelastic body

Claims (6)

The primer composition (a) containing a styrene block copolymer is applied to the surface of the metal plate (b) (I), and the metal plate (b) surface-treated in the step (I) is applied to the styrene viscosity. A method for producing a viscoelastic damper, comprising a step (II) of heat-sealing the elastic body (c) at a temperature of 100 to 230 ° C. The primer composition (a) is at least one selected from a styrene-isobutylene-styrene triblock copolymer, a styrene-hydrogenated isoprene-styrene triblock copolymer, and a styrene-hydrogenated butadiene-styrene triblock copolymer. The manufacturing method of the viscoelastic damper of Claim 1 characterized by the above-mentioned. The method for producing a viscoelastic damper according to claim 1, wherein the primer composition (a) contains a styrene-isobutylene-styrene triblock copolymer. The metal plate (b) is at least one selected from a general structural steel plate, a cold rolled steel plate, a carbon steel plate, a stainless steel plate, and a low alloy steel plate, and the metal surface is blasted. The manufacturing method of the viscoelastic damper in any one of 1-3. The storage rigidity (G ′) of the styrenic viscoelastic body (c) measured at 20 ° C., 0.5 Hz, 100% strain and shear mode is 0.100 MPa or more. The manufacturing method of the viscoelastic damper in any one. The method for producing a viscoelastic damper according to any one of claims 1 to 5, wherein the styrenic viscoelastic body (c) contains a styrene-isobutylene diblock copolymer.

Images