JPH09295372A - Manufacture of composite laminate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for manufacturing a composite laminate of various shape and size which is used for an antiseismic device and has superior breaking characteristic in simple and highly productive manner and in a short time without the necessity to use a special molding die. SOLUTION: When alternately laminating a plural number of hard plates with rigidity and soft plates with viscoelasticity respectively, at least, one surface treatment selected from among treatments such as halogenation, acid wash, low pressure plasma, corona discharge, ultraviolet emission and buffing is performed on the surface of the soft plates of viscoelastic nature such as vulcanized rubber. After this treatment, the treated face of the soft plate is bonded to the adjacent hard plate with an adhesive selected from a group of adhesives of urethane, epoxy and acrylic materials.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a composite laminate used in a seismic isolation device or the like, and more particularly to a method for manufacturing a composite laminate having good productivity and suitable for automation.

[0002]

2. Description of the Related Art Conventionally, a composite laminated body in which a rigid hard plate such as a plurality of steel plates and a soft plate such as rubber having viscoelastic properties are alternately laminated is disposed in its structure. Seismic structures are widely used as seismic isolation devices for buildings and bridges. In the composite laminated body used for such a base isolation structure, an elastic body such as a rubber material is generally used as the soft plate and a metal plate is used as the hard plate. This composite laminate is conventionally formed by laminating a sheet made of an unvulcanized rubber material and a metal plate having an adhesion-improving treatment on the surface, and pressing and heating in a mold to form a soft plate. It was manufactured by vulcanizing an unvulcanized rubber material and adhering it to a metal plate.

However, according to this method, it takes a long time until the vulcanization is completed, and there is a complicated step of punching and laminating an unvulcanized rubber sheet having surface tackiness, and the productivity is high. Is bad. Furthermore, it fits the desired shape,
In addition, there is a problem that it is necessary to manufacture a mold having sufficient strength, a facility such as a vulcanizing press and a vulcanizing can is required, and the like, and a composite laminate having a desired shape and size can be easily prepared. It was difficult to manufacture.

Further, since the unvulcanized rubber sheet is vulcanized after being laminated with the hard plate, the vulcanized state becomes non-uniform depending on the heating method and heating temperature conditions, and the portion having insufficient adhesive strength is composite laminated. Since it may exist in the body, strict control of vulcanization conditions was required.

Therefore, after laminating each layer of the composite laminate, instead of vulcanizing and adhering the rubber material constituting the soft plate, a soft plate and a hard plate which are preformed like vulcanized rubber are adhered. A method of bonding with an adhesive has been tried, but due to problems such as compatibility with the viscoelastic material and the hard plate that make up the soft plate, the adhesive strength, and the durability of the adhesive strength, the fracture characteristics suitable for seismic isolation devices It is difficult to obtain a highly reliable and reliable composite laminate,
The current situation is that it has not been widely used.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional technique, and provides a composite laminate having excellent breaking characteristics used for a seismic isolation device easily and with high productivity. It is an object of the present invention to provide a method for producing the composite laminate, and further a method for producing various shapes and sizes of the composite laminate in a short time without producing a special mold.

[0007]

The method for producing a composite laminate of the present invention is a method for producing a composite laminate in which a plurality of rigid hard plates and a plurality of soft plates having viscoelastic properties are alternately laminated. The surface of the soft plate having the viscoelastic property is treated with halogen, acid, low pressure plasma,
At least one surface treatment selected from the group consisting of corona discharge treatment, ultraviolet irradiation treatment, and buffing treatment,
A surface that has been subjected to a surface treatment of the soft plate and a hard plate adjacent to the surface,
It is characterized in that it is adhered by an adhesive.

Further, in the above manufacturing method, the soft plate having the viscoelastic property is a pre-vulcanized rubber material, preferably natural rubber, isoprene rubber, styrene butadiene rubber, butadiene rubber, chloroprene rubber, ethylene propylene. It is characterized by being at least one selected from the group consisting of rubber.

Among the surface treatments, the halogenation treatment includes halogen molecules selected from chlorine, bromine and iodine, a halogen generator selected from hypochlorous acid and hypobromous acid, and N, N'-dichloro. It is characterized in that it is treated with at least one compound selected from the group consisting of halogen-containing compounds selected from -p-toluenesulfonamide and trichloroisocyanuric acid amide. In addition, the low pressure plasma treatment is 10 ⁻⁶ Torr to 10 ² Torr.
Under a pressure of, characterized by a process for performing plasma discharge by direct current or alternating current with a frequency region of 0 ⁸ Hz, the corona discharge treatment, atmospheric pressure, 10 ³ to 10 ⁸ H
The surface of the soft plate material is characterized in that it is a process of performing corona discharge by direct current or alternating current in the frequency range of z, and further, the ultraviolet treatment irradiates the soft plate surface with ultraviolet rays to cause a chemical change. Is a treatment for forming a functional group having affinity with the adhesive.
The adhesive for adhering the surface-treated surface of the soft plate to the adjacent hard plate is at least one selected from the group consisting of urethane-based, epoxy-based, and acrylic-based adhesives. To do.

In the method for producing the composite laminate of the present invention, the surface of the soft plate is preliminarily selected by a specific selected treatment method,
That is, after performing an adhesion improving treatment by a treatment selected from the group consisting of a halogenation treatment, an acid treatment, a low pressure plasma treatment, a corona discharge treatment, an ultraviolet irradiation treatment and a buffing treatment, it is adhered to a hard plate with an adhesive. Therefore, the affinity of the surface of the material having the viscoelasticity that constitutes the soft plate is improved, and the soft plate and the hard plate can be evenly and firmly bonded using a general-purpose adhesive. Therefore, unlike the conventional vulcanization bonding method, no special mold or large-scale manufacturing equipment is required,
It is possible to easily manufacture a composite laminate having excellent rupture properties in a short time.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION The method for producing the composite laminate of the present invention will be described in detail. The material used for the soft plate having viscoelastic properties that constitutes the composite laminate includes a 50% modulus of 1.5 to 20 kgf / cm ² and a dynamic shear modulus G at 25 ° C. of 1.5 to 20 kgf. / Cm ^{2 It has} a characteristic of. The 50% modulus and the dynamic shear modulus G of various materials are, for example, JIS K6301,
It can be measured according to K6394.

Here, examples of the material having viscoelastic properties include organic materials such as thermoplastic rubber, urethane rubber, various vulcanized rubbers, slightly crosslinked rubbers, elastomers and plastics, foams thereof, asphalt and clay. Various materials such as inorganic materials such as and mixed materials thereof,
It is possible to use those having the above-mentioned viscoelastic properties, but in particular, it has been difficult to obtain good adhesive properties with a hard plate in the past unless vulcanization adhesion after lamination has been conventionally performed, and a pre-vulcanized rubber material is used. For example, when at least one selected from the group consisting of pre-vulcanized natural rubber, isoprene rubber, styrene-butadiene rubber, butadiene rubber, chloroprene rubber, and ethylene-propylene rubber is used, the effect of the present invention is remarkable.

These materials are formed into a flat plate and used as a soft plate. The shape of the soft plate is not particularly limited, but usually, each soft plate has a disk shape or a rectangular shape. The thickness of the soft plate is not particularly limited and can be selected according to the purpose for which the composite laminate is used, but in general, 1 to
A thickness of about 20 mm is used.

These materials may be used singly or as a mixture of two or more kinds, and may be formed of a uniform material as a whole, but a high damping material is used for the inner part and a creep performance is used for the outer part. You may use it in combination of 2 or more types with a good and soft material.

As a method for manufacturing the soft plate, a known manufacturing method can be applied. That is, in the case of a rubber material, a manufacturing method by mold vulcanization by step pressing, a manufacturing method in which a rubber sheet is manufactured by press vulcanization, rotocure, etc., and punched into a predetermined shape, etc., and other viscoelastic properties Also in the case of a material having, a general-purpose molding, punching after processing into a sheet, and the like can be applied.

Further, as the hard plate constituting this composite laminate, metal, ceramics, plastics, FR
Various materials having required rigidity, such as P, polyurethane, wood, paper board, slate board, decorative board, etc., can be used. Here, the required rigidity largely depends on design conditions, but means rigidity that does not easily cause a buckling phenomenon when subjected to shear deformation. Generally, from the viewpoint of strength and durability, steel plate,
Metal plates such as iron plates and aluminum plates are widely used.

There is no particular limitation on the thickness and shape of the hard plate,
The thickness can be selected according to the purpose for which the composite laminate is used, but the thickness is generally about 0.5 to 5 mm. The shape is arbitrary as in the case of the soft plate to be laminated, but usually, the same shape as the soft plate to be used in combination is used.

A plurality of layers of the soft plate and the hard plate are alternately laminated and adhered to each other to form a composite laminate.
Further, it is also possible to form a unit in which a plurality of flat plate-shaped soft plates and hard plates are laminated and adhered in advance, and to laminate and use them. In the bonding step, first, in order to improve the adhesiveness of the soft plate, the soft plate surface is selected from the group consisting of halogenation treatment, acid treatment, low pressure plasma treatment, corona discharge treatment, ultraviolet irradiation treatment and buffing treatment. At least one of the surface treatments is performed.

Here, the term "halogenation treatment" means that the surface of the soft plate is treated with at least one compound selected from the group consisting of halogen molecules, halogen generators and halogen-producing compounds.

The halogen molecule used here is
Chlorine, bromine and iodine are mentioned, which may also be used in aqueous solution. Halogen generators include hypochlorous acid and hypobromite, which can also be used in aqueous solution.

Further, in the present invention, the halogen-containing compound includes a compound having a halogen atom in the molecule and exhibiting a characteristic as a halogen or a characteristic similar to a halogen such as a halogenoid. And, for example, halogenated isocyanate, N-monohaloalkyl urethane, N, N-dihaloalkyl urethane,
N, N-dihaloallylsulfonamide, sulfur halide, sulfenyl halide, halomethyl ether, thiocyanogen [(SCN) ₂ ], azide iodide, azide bromide, iodine chloride, iodine bromide, trichloroacetic acidiod Dyed, Acetic Acid Bromide,
Examples thereof include iodine nitrate, alkyl hibohalide, alkyl thionyl chloride, nitrosyl chloride, nitrosyl bromide, halogenated isocyanuric acid, halogenated methylhydantoin, and the like. Specifically, iodide isocyanate, N,
N-dichloroethylurethane, N, N-dibromoethylurethane, N, N'-dichloro-p-toluenesulfonamide, N, N-dibromotoluenesulfonamide,
N, N-dichlorobenzenesulfonamide, tert-butyl highbohalide, trichloroisocyanuric acid, dichloroisocyanuric acid, trichloroisocyanuric acid amide,
Examples thereof include dichlorodimethylhydantoin and dichloromethylhexylhydantoin.

Among the above-mentioned treating agents, halogen-containing compounds, particularly N, N'-dichloro-p-toluenesulfonamide and trichloroisocyanurium, from the viewpoints of improving the adhesive strength, processability, handling, safety and the like. At least one selected from acid amides is preferred.

These halogen-containing compounds can be used by dissolving them in a suitable solvent at a concentration of 0.1 to 20% by weight, preferably 1 to 15% by weight. Specific examples of suitable solvents include carbon tetrachloride, halogenated hydrocarbons such as chloroform and dichloromethane, benzene, nitrobenzene, and the like.
Aromatic hydrocarbons such as halogenated benzene, toluene, xylene, dimethyl ether, tetrahydrofuran (TH
F), cyclic or chain ethers such as dioxane, esters such as ethyl acetate, pentane, hexane, heptane,
Examples thereof include aliphatic hydrocarbons such as octane and cyclohexane, ketones such as acetone, cyclohexanone and methyl ethyl ketone, and alcohols such as ethanol, ethylene glycol and tert-butyl alcohol. Among them, THF, dioxane, acetone, benzene, toluene, carbon tetrachloride, chloroform, methyl ethyl ketone, ethyl acetate and the like are preferably used.

In order to treat the surface of the soft plate with at least one compound selected from the group consisting of the halogen molecule, the halogen generator and the halogen-producing compound, an aqueous solution of these compounds or a solution prepared by dissolving them in a solvent is used. It suffices if it is uniformly attached to the surface, and any known coating method such as roller coating, spray coating, and dip coating can be applied.

The acid treatment is to treat the surface of the soft plate with at least one compound selected from the group consisting of an acidic compound and an acid generating compound. For example, an aqueous solution of concentrated sulfuric acid and potassium dichromate is treated at 70 ° C. Examples include a method of immersing at a temperature of about. If acid treatment is performed for a long time, the soft material may deteriorate, so the treatment time is 5 to 1
The time is preferably about 0 minutes, and it is preferable to remove the residual acidic compound and the like after the treatment.

The low-pressure plasma treatment is, for example, a treatment method in which low-temperature plasma is irradiated at a treatment of 80 to 60,000 W sec / l to make the surface hydrophilic. This plasma treatment is carried out under a low pressure atmosphere of 10 ⁻⁶ Torr to 10 ² Torr, particularly 10 ⁻³ Torr to 10 Torr, and any gas used for ordinary low pressure plasma treatment, that is, Ar or H 2.
_{e, Ne, O 2, N} 2, CO 2, CF 4, 1 or more gases selected from CHF _3, etc., or in an atmosphere obtained by vaporizing H ₂ O or alcohol other organic matter, 0-1
It is preferable to perform plasma discharge treatment by a direct current or alternating current with a frequency region of 0 ⁸ Hz. The electrode is selected to be suitable for the frequency of discharge such as direct current, low frequency alternating current, high frequency alternating current, and microwave, but when microwave is used, it is a downstream that separates the discharge generation part and the processing part. It is common to apply the law.

The corona discharge treatment is a pressure in a region where corona discharge can occur, usually under a pressure near atmospheric pressure, and is 0 to 1
DC or AC in the frequency range of 0 ⁸ Hz, preferably 10
It is a method of roughening the surface of a soft plate by causing corona discharge in an alternating current in the frequency range of ³ to 10 ⁶ Hz. Usually, DC and AC discharge of several Hz to several hundreds Hz are performed industrially. Further, the electrode for performing corona discharge is a known one, for example, a parallel plate electrode, an approximate Rogowski electrode,
A sphere electrode, a needle-plate electrode, a wire-plate electrode, etc. can be used.

As the ultraviolet treatment, the surface of the soft plate is irradiated with ultraviolet rays to cause a chemical change, and the surface of the soft plate material is treated with a functional group having an affinity for an adhesive such as a carbonyl group, a carboxyl group or a hydroxyl group. It is what is generated. Ultraviolet irradiation may deteriorate the soft plate material itself when it becomes excessive, so the conditions of the ultraviolet rays to be irradiated include, for example,
In the case of the wavelength of 2537Å, 50 to 40,000 J / cm ²
It is preferable that the light amount is within the range.

The buffing treatment, which is a physical surface treatment, is a treatment method of roughening the surface by buffing the surface, and specific examples thereof include a method of roughening the surface with a disk sander or the like. Among them, from the viewpoint of adhesive strength, it is preferable to perform a treatment selected from halogenation treatment, low-pressure plasma treatment, corona discharge treatment, and ultraviolet irradiation treatment.

When the composite laminate according to the present invention has metal flanges on the upper and lower sides, it is preferable that the surface of the flexible plate to be bonded to the flange is also subjected to the above surface treatment for improving the adhesion.

In these surface treatments, it is preferable from the viewpoint of the treatment effect that the surface of the soft plate is subjected to pretreatments such as cleaning and degreasing in advance.

Next, the surface-treated soft plate is bonded to the hard plate using an adhesive. The adhesive may be applied to the surface-treated surface of the soft plate, to the surface of the hard plate to be bonded to the soft plate, or to both of them.

As the adhesive used here, any known adhesive can be arbitrarily used as long as it is suitable for the soft plate and hard plate used, but a group consisting of urethane-based, epoxy-based and acrylic-based adhesives. From the viewpoint of adhesiveness, one or more selected from the above are preferable. As the urethane adhesive, a two-liquid mixed adhesive of polyester polyol or polyether polyol and an isocyanate compound,
Examples thereof include a moisture-curing type composed of a prepolymer obtained by reacting a polyester polyol or a polyether polyol with an isocyanate, and a two-liquid mixed type adhesive of the prepolymer and the polyol. As the epoxy-based adhesive, a two-component mixed type adhesive containing an epoxy resin as a main component and mixed with a curing agent is generally used, and usable epoxy resins include bisphenol A type, F type, and A type.
Bifunctional glycidyl ether type epoxy resins such as bisphenol type epoxy resins such as D type or alcohol type glycidyl ether type epoxy resins such as polyethylene glycol type, polypropylene glycol type, etc. are mentioned, and the curing agent is diethylenetriamine, tetraethylenetetramine, etc. Aliphatic amines, polyamides obtained by modification with dimer acid, alicyclic amines such as ketamine or isophoronediamine, paramenthanediamine, amine curing agents such as aromatic amines such as diaminodiphenylmethane, diaminodiphenylsulfonic acid, dodecenylsuccinic anhydride Acids, aliphatic compounds such as polyazelaic anhydride, alicyclic compounds such as hexahydrophthalic anhydride, aromatic compounds such as trimellitic anhydride and pyromellitic anhydride, and curing agents such as halogen acid anhydrides. Is, the curing agent is at least one suit epoxy equivalent of the epoxy resin are used in combination. These adhesives preferably have a breaking elongation of 0.5% or more after curing. As the acrylic adhesive, an acrylic ester, a methacrylic ester-based resin as a main agent, used in combination with a solvent such as a ketone, an aromatic hydrocarbon, an aliphatic ester, butadiene,
Examples thereof include copolymers with styrene, dicarboxylic acid ester and the like. When a rubber material is used for the soft plate, a butadiene-methacrylic acid ester copolymer or the like can be preferably used.

In order to laminate the surface-treated soft plate and hard plate with an adhesive and form the composite laminate by adhesion, a positioning jig such as a pin or a matching jig is used by a conventional method. It can be performed by stacking while determining the position. In this case, the upper and lower positioning jigs or the upper and lower flanges provided on the composite laminated body are fixed by pressure with bolts, and the pressure is applied to the adherend to a certain degree, for example, 0.5 to 3 kgf / cm ^2.
It is also possible to apply a certain amount of pressure to bond them. Adhesion is performed by leaving it in a temperature atmosphere suitable for the type of adhesive for a predetermined time, and removing the pins, the alignment jig and the like to obtain a composite laminate. The ambient temperature at the time of bonding may be selected from room temperature to about 200 ° C. according to the type of adhesive. The time required for adhesion is usually several minutes to several hours. It is preferable that the adherends are preheated at the time of bonding and then stacked and bonded, from the viewpoint of shortening the heat treatment time and completing the bonding in a short time.

In the manufacturing method of the present invention, not only the soft plate but also the surface of the hard plate to be bonded can be subjected to the adhesion improving treatment. Examples of the adhesion improving treatment applied to the surface of the hard plate include physical surface treatment such as sand blasting and shot blasting, and chemical conversion treatment applying an inorganic coating such as zinc phosphate and zinc calcium phosphate to the surface.
Furthermore, it is also preferable to apply a thermosetting resin-based paint on the surface of the hard plate by baking. It is also preferable to perform these surface treatments on the surface of the metal flange that is bonded to the soft plate. Physical surface treatment such as sand blasting, shot blasting,
It can be performed by a conventional method. As the chemical conversion treatment, an inorganic coating film of zinc phosphate, zinc calcium phosphate or the like having a crystal grain size of 0.5 to 50 μm, preferably 10 μm or less, and 1 to 2 are used.
0 g / cm ^2, it is preferable that preferably for at 2-5 g / cm ^2. As a method of baking-coating a thermosetting resin-based paint, an epoxy resin-based cationic paint or the like is added in an amount of 20 to 100.
A method of applying a coating of about μm and then performing a baking treatment at a temperature of about 160 to 180 ° C. may be mentioned. Even when the hard plate is subjected to the surface treatment, it is preferable from the viewpoint of the treatment effect to pre-treat the surface of the hard plate in advance such as cleaning and degreasing.

The composite laminate obtained by the production method of the present invention may have weather resistance, and thus the outside of the composite laminate may be coated with a material having excellent weather resistance. Examples of the coating material include butyl rubber, acrylic rubber, polyurethane, silicone rubber, fluororubber, polysulfide rubber, ethylene propylene rubber (ERP and EPDM), chlorosulfonated polyethylene, chlorinated polyethylene, ethylene vinyl acetate rubber, chloroprene rubber, etc. Can be used. These materials may be used alone or as a blend of two or more. Further, it may be blended with natural rubber, isoprene rubber, styrene butadiene rubber, butadiene rubber, nitrile rubber and the like. When applying this coating material, it is preferable to apply a method that does not impair the productivity improved by the production method of the present invention, for example, by applying a thermosetting polyurethane to the outer periphery of the composite laminate, curing How to do, place the composite laminate that has completed the adhesion treatment in the form,
A method of casting a coating material, a method of winding a thermoplastic elastomer to perform heat molding, an injection molding method,
Examples of the method include post-bonding a vulcanized rubber.

[0037]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to the drawings. Table 1 collectively shows the conditions and test results of Examples and Comparative Examples.

Example 1 FIG. 1 is a schematic sectional view of a composite laminate 10 obtained by the manufacturing method of the present invention. The composite laminated body 10 uses 15 steel plates with an outer diameter of 300 mm, an inner diameter of 30 mm, and a thickness of 2.3 mm as the hard plate 16 between the upper and lower two flanges 12 and 14, and as the soft plate 18, 50% modulus of 12 kgf / cm ^2, a tensile strength of 140 kgf / cm ^2, elongation at break using 700% of the rubber plate, in the same shape as the rigid plate 16, with a soft sheet 18 having a thickness of 3 mm 16 layers . Upper and lower flanges 12, 14
Is provided with four openings for inserting the bolts 22 for positioning the stack and adjusting the parallel state.
The composite laminate 10 was manufactured as follows.

The created tabular producing 50% modulus of 12 kgf / cm ² of rubber, the tensile strength of 140 kgf / cm ^2, a thickness of 3mm by a conventional method rubber material elongation of 700% at break, a rubber sheet having a width 70mm Then, using a punching machine, an outer diameter of 300 mm,
It was punched into a shape having a hole with a diameter of 30 mm at the center to manufacture a donut-shaped plate-shaped rubber having an opening at the center, and used as a soft plate 18.

Surface Treatment of Soft Plate The surface of the soft plate 18 was uniformly coated with a 3% acetone solution of trichloroisocyanuric acid amide with a roller.

Treatment of Hard Plate and Flange Surface treatment by shot blasting is performed on both surfaces of the steel plate 16 having an outer diameter of 300 mm, an inner diameter of 30 mm and a thickness of 2.3 mm and the surfaces of the upper and lower flanges 12 and 14 which are in contact with the soft plate 18. went. Then, an adhesive obtained by combining a bisphenol A type liquid epoxy resin and polyamide in an epoxy equivalent was applied to the surface to be treated so that the film thickness was 100 μm.

Lamination Process As shown in FIG. 2, a round bar 20 (shown in phantom) having a diameter of 28 mm and having M25 bolt holes at the top is attached to the center, and bolts 22 for adjusting the parallelism are provided at four places. Set the lower flange 14 on the attached pedestal 24,
After that, the soft plate 18 and the hard plate 1 which have been subjected to the above-mentioned treatment while being positioned by the round bar 20 in the center so as not to be displaced.
6 and 6 were laminated alternately. 16 soft plates 18, 1 hard plate
After setting 15 sheets of 6, the upper flange 12 was set.

Using the bolt holes of the round bar 20, the compression jig 2
6 is tightened and fixed with bolts, and the upper and lower flanges 12,
14 was compression fixed. Further, the bolts 22 arranged on the pedestal 24 were made to penetrate through the holes provided in the flanges 12 and 14, and adjusted so as to be parallel to each other and then tightened.

FIG. 2 is a schematic cross-sectional view showing the composite laminated body 10 in a state in which this laminating step is completed on the pedestal 24 and is compressed and fixed.

Heat Treatment Step This laminated body together with the pedestal 24 is placed in an oven and left standing in an atmosphere of 100 ° C. for 1 hour for bonding, then the bolt 22 and the compression jig 26 are removed, and the laminated body 10 is taken out from the pedestal 24. The present invention product 1 was obtained.

Performance Evaluation of Composite Laminate The composite laminate 10 thus obtained was subjected to a vertical load of a surface pressure of 80 kgf / cm ² and a shear test was carried out at a shear rate of 22 cm / min to measure the thickness of the soft plate 18 at break. Shear strain ratio (%)
I asked. The test was carried out on three test bodies, and the average value thereof was determined and used as the measured value. The larger the number, the better. Further, in the production of the composite laminate 10, the time required for one operator to produce one unit with one equipment was defined as a production cycle, and the above results are shown in Table 1 below.

[0047]

[Table 1]

(Comparative Example 1) As a surface treatment of a soft plate, the same material as in Example 1 was used except that acetone washing was carried out in place of the treatment with a 3% acetone solution of trichloroisocyanuric acid amide. A composite laminate was manufactured by the same manufacturing method as in Example 1 and designated as Comparative Product 1. The obtained composite laminate was evaluated in the same manner as in Example 1, and the results are shown in Table 1 above together with the production cycle of Comparative product 1.

(Comparative Example 2) Adjustment of soft plate As a soft plate raw material, an unvulcanized rubber sheet having a thickness of 3.1 mm was used and punched in the same manner as in Example 1 to obtain a soft plate.

Treatment of hard plate and flange : Both sides of a steel plate having an outer diameter of 300 mm, an inner diameter of 30 mm and a thickness of 2.3 mm, and the surfaces of the upper and lower flanges on the side in contact with the soft plate,
Surface treatment was performed by shot blasting. Then, a two-pack type vulcanizing adhesive was applied to the surface to be treated so that the dry film thickness was 40 μm.

Laminating Step The upper and lower flanges, the soft plate and the hard plate were laminated in the same manner as in Example 1.

Heat treatment step This laminated body together with the pedestal was placed in an oven, left for 4 hours in an atmosphere of 130 ° C. for vulcanization adhesion, and then the bolt and the compression jig were removed and taken out from the pedestal to obtain a composite laminated body. Comparative product 2 was used.

Performance Evaluation of Composite Laminate The resulting composite laminate was evaluated as in Example 1 and the results are shown in Table 1 along with the production cycle of Comparative Product 2.
It was shown to.

As is clear from Table 1, the composite laminate of Example 1 obtained by the production method of the present invention was able to obtain a composite laminate excellent in shearing property in a short time. on the other hand,
Comparative Example 1 in which the soft plate of the present invention was not pretreated
In the composite laminate of (3), since the adhesive force between the soft plate and the hard plate was insufficient, the rupture property against shear stress was insufficient.
It was also found that the composite laminate of Comparative Example 2 produced by conventional vulcanization adhesion had excellent breaking properties, but had a long adhesion time and poor productivity.

[0055]

As is apparent from the above description, according to the method for producing a composite laminate of the present invention, a composite laminate having excellent breaking characteristics used in a seismic isolation device can be easily produced with high productivity. Further, various shapes and sizes of the composite laminate can be manufactured in a short time without manufacturing a special mold.

[Brief description of drawings]

FIG. 1 is a schematic sectional view of a composite laminate obtained according to Example 1 of the present invention.

FIG. 2 is a schematic cross-sectional view showing a composite laminate in a state where the lamination process is completed on the pedestal and compression fixed.

[Explanation of symbols]

 10: Composite laminate 16: Hard plate 18: Soft plate 24: Pedestal for stacking positioning

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location C08J 7/00 CEQ C08J 7/00 CEQA 303 303 304 304 304 306 306 C09J 133/08 JDBC C09J 133/08 JDB 163/00 JFK 163/00 JFK 175/04 JEZ 175/04 JEZ F16F 1/40 F16F 1/40 // F16F 15/02 8312-3J 15/02

Claims (8)

[Claims] 1. A method for producing a composite laminate in which a plurality of rigid hard plates and a plurality of soft plates having viscoelastic properties are alternately laminated, the surface of the soft plate having viscoelastic properties. Is subjected to at least one surface treatment selected from the group consisting of a halogenation treatment, an acid treatment, a low pressure plasma treatment, a corona discharge treatment, an ultraviolet irradiation treatment and a buffing treatment, and the surface of the soft plate subjected to the surface treatment is treated. And a hard plate adjacent to
Bonding with an adhesive agent, a method for producing a composite laminate 2. The method for producing a composite laminate according to claim 1, wherein the soft plate having the viscoelastic property is made of a rubber material which has been vulcanized in advance. 3. The rubber material is at least one selected from the group consisting of natural rubber, isoprene rubber, styrene butadiene rubber, butadiene rubber, chloroprene rubber, and ethylene propylene rubber. A method for producing the described composite laminate. 4. A halogen molecule selected from chlorine, bromine and iodine, a halogen generator selected from hypochlorous acid and hypobromous acid, and N,
The composite laminate according to claim 1, which is treated with at least one compound selected from the group consisting of halogen-containing compounds selected from N'-dichloro-p-toluenesulfonamide and trichloroisocyanuric acid amide. Manufacturing method. 5. The low pressure plasma treatment is 10 ⁻⁶ Torr
The method for producing a composite laminate according to claim 1, wherein the plasma discharge is a direct current or an alternating current in a frequency range of 0 to 10 ⁸ Hz under a pressure of 10 ² Torr. 6. The corona discharge treatment is 0 to 1 under normal pressure.
Method for manufacturing a composite laminate according to claim 1, characterized in that the direct current or alternating current with a frequency region of 0 ⁸ Hz is a process for performing corona discharge. 7. The ultraviolet treatment is a treatment for irradiating the surface of the soft plate with ultraviolet rays to cause a chemical change and to generate a functional group having an affinity for the adhesive on the surface of the soft plate material. The method for producing a composite laminate according to claim 1, wherein. 8. The method for producing a composite laminate according to claim 1, wherein the adhesive is at least one selected from the group consisting of urethane adhesives, epoxy adhesives, and acrylic adhesives. .