JP2016074803A - Pasting material, reinforcement member and manufacturing method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pasting material and a reinforcement member, capable of adhering at a room temperature or a comparatively low temperature, and capable of uniformly reinforcing an adherend by a simple method, and a manufacturing method of a reinforcement member.SOLUTION: A pasting material 1 includes: an adhesion layer 2; a constraint layer 4 at least partially laminated on the adhesion layer 2; and an impregnation layer 3 at least partially laminated on the adhesion layer 2 on a part other than that with the constraint layer 4 laminated, and capable of impregnating a solidifying component 7.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an adhesive material, a reinforcing member, and a manufacturing method thereof, and more specifically, a reinforcing member that is attached to various industrial products to reinforce the product, a manufacturing method of the reinforcing member, and the reinforcing member The present invention relates to an adhesive material used for manufacturing.

  Conventionally, for various parts used in fields such as automobiles, railway cars, home appliances, office equipment, housing equipment or machine tools, reinforcement sheets, vibration suppression, It is known to stick a sticking material such as a sheet to a component (for example, see Patent Document 1).

  Patent Document 1 describes a steel sheet reinforcing sheet comprising a resin layer made of a steel sheet reinforcing resin composition containing an epoxy resin, acrylonitrile-butadiene rubber, a curing agent and a foaming agent, and a reinforcing layer.

  The reinforcing sheet described in Patent Document 1 is cured by high-temperature heating to adhere an epoxy resin and adhere to an adherend (steel plate).

JP 2005-139218 A

  However, from the viewpoint of energy saving and environmental conservation, or from the viewpoint of using it for parts such as plastic products with low heat resistance, there is a demand for a reinforcing sheet that can be attached by normal temperature or low temperature heating.

  The resin layer (sticking surface) of Patent Document 1 is made of a one-part curable resin composition, and can be bonded to an adherend by low-temperature heating by selecting the type and composition of the epoxy resin. . However, when this reinforcing sheet is stored at room temperature, the curing reaction proceeds, so that the room temperature storage property is poor. Therefore, it must be stored at a temperature lower than room temperature, and is inferior in handleability and practicality.

  On the other hand, a reinforcing method has been proposed in which a two-component curable resin composition is applied to an adherend at room temperature. However, since this reinforcing method does not use a constraining layer, it is insufficient from the viewpoint of reinforcing strength.

  Therefore, it is considered to improve the reinforcing strength by applying the two-component curable resin composition to the adherend and simultaneously laminating the constraining layer on the application surface. However, in that case, it is necessary to accurately position and bond the constraining layer to the application surface, resulting in poor workability. Moreover, in the coating method, it is difficult to make the thickness of the resin layer (a layer formed by curing the two-component curable resin composition) uniform. Therefore, this method has a problem that it is difficult to reinforce uniformly.

  Accordingly, an object of the present invention is to provide a method for manufacturing a sticking material, a reinforcing member, and a reinforcing member that can be stuck at room temperature or at a relatively low temperature and can uniformly reinforce an adherend by a simple method. It is to provide.

  The adhesive material of the present invention includes an adhesive layer, a constraining layer in which at least a part is laminated on the adhesive layer, and at least a part of the adhesive layer other than a part in which the constraining layer is laminated. And an impregnation layer capable of impregnating the solidifying component.

  Moreover, in the adhesive material of this invention, it is suitable that the said impregnation layer is a foam or a fiber structure.

  In the adhesive material of the present invention, it is preferable that the constraining layer is a fiber cloth.

  Moreover, in the adhesive material of this invention, it is suitable for the said contact bonding layer to contain a pressure sensitive adhesive composition.

  In the adhesive material of the present invention, the impregnation layer is laminated on one surface of the adhesive layer, and the constraining layer is laminated on one surface of the adhesive layer so as to cover the impregnation layer. It is suitable.

  In the adhesive material of the present invention, the impregnation layer is laminated on one surface of the adhesive layer, and the constraining layer includes the impregnation layer when projected in the thickness direction. It is preferable to be laminated on the other surface.

  The manufacturing method of the reinforcing member of the present invention includes a preparation step of preparing the above-described adhesive material, an impregnation step of impregnating the solidifying component into the impregnation layer of the adhesive material, and an adhesion layer of the adhesive material. And a solidifying step for solidifying the solidifying component impregnated in the impregnated layer. A reinforcing member for reinforcing the adherend is manufactured by performing the step. .

  Further, in the method for producing a reinforcing member of the present invention, the solidifying component is a room temperature curable two-component curable resin composition, and in the solidifying step, the two-component curable resin composition is cured at room temperature. Is preferred.

  In the reinforcing member manufacturing method of the present invention, it is preferable that the two-component curable resin composition is at least one selected from the group consisting of an epoxy resin composition and a urethane resin composition.

  In the method for producing a reinforcing member of the present invention, the solidifying component is a thermoplastic resin composition. In the impregnation step, the molten thermoplastic resin composition is impregnated, and in the solidification step, the molten component is melted. It is preferable to solidify the resulting thermoplastic resin composition by cooling.

  The reinforcing member of the present invention is manufactured by the above-described method for manufacturing a reinforcing member.

In the reinforcing member of the present invention, it is preferable that an elastic modulus at 25 ° C. of the solidifying component subjected to the solidifying step is 1 × 10 ⁷ Pa or more.

Moreover, in the reinforcing member of this invention, the viscoelastic spectrum obtained when the said solidification component in which the said solidification process was implemented measured dynamic viscoelasticity on the following conditions is in the range of -20 degreeC-20 degreeC. It is preferable that tan δ has a value of 0.1 or more.
Deformation mode: Shear mode Temperature rise rate: 5 ° C / min Measurement frequency: 1Hz

  According to the adhesive material and the reinforcing member of the present invention, the adherend can be attached to the adherend at room temperature or at a relatively low temperature, and the adherend can be uniformly reinforced by a simple method.

  According to the method for manufacturing a reinforcing member of the present invention, it is possible to manufacture a reinforcing member that can be uniformly reinforced at room temperature or relatively low temperature.

1A to 1B show a first embodiment of the adhesive material of the present invention, in which FIG. 1A is a side sectional view, FIG. 1B is a plan view, and FIG. 1C is a bottom view. 2A to 2D are process diagrams of an embodiment of a method for producing a reinforcing member of the present invention using the adhesive material of FIGS. 1A and 1B, and FIG. 2A is a preparation process for preparing the adhesive material, FIG. 2B is an impregnation step of impregnating the impregnation layer of the adhesive material with a solidifying component (two-component curable resin composition), and FIG. 2C is an adhesion step of adhering the adhesive layer of the adhesive material to the adherend. FIG. 2D shows a solidification step of solidifying the solidifying component (two-component curable resin composition). 3A to 3D are process diagrams of an embodiment of a method for manufacturing a reinforcing member of the present invention using the adhesive material of FIGS. 1A and 1B, and FIG. 3A is a preparation process for preparing the adhesive material, FIG. 3B is an impregnation step of impregnating the impregnated layer of the adhesive material with a solidifying component (molten thermoplastic resin composition), and FIG. 3C is an adhesion for adhering the adhesive layer of the adhesive material to the adherend. The process and FIG. 3D show the solidification process which solidifies the solidification component (molten thermoplastic resin composition). 4A and 4B are modifications of the first embodiment of the adhesive material of the present invention (form in which the adhesive layer is an adhesive mesh layer), FIG. 4A is a side sectional view, and FIG. 4B is a bottom surface. The figure is shown. FIG. 5A and FIG. 5B are modifications of the first embodiment of the adhesive material of the present invention (form in which the adhesive layer is a non-permeable adhesive layer), FIG. 5A is a side sectional view, and FIG. The figure is shown. 6A and 6B show a second embodiment of the adhesive material of the present invention (form in which an impregnation layer is laminated on one side of the adhesive layer and a constraining layer is laminated on the other side), and FIG. , Side sectional view, FIG. 6B shows a bottom view. FIG. 7 is an explanatory diagram of the evaluation method of the example.

1. First Embodiment In FIG. 1A, the upper side of the paper is “upper” (one side in the first direction, one side in the thickness direction), and the lower side of the paper is “lower” (the other side in the first direction, the other side in the thickness direction). The left side of the paper surface is the “front side” (second side in the second direction), the right side of the paper surface is the “rear side” (second side in the second direction), the back side in the thickness direction is the “right side” (one side in the third direction), The front side in the paper thickness direction is the “left side” (the other side in the third direction), and specifically conforms to the direction arrow shown in FIG. 1A. The drawings other than FIG. 1A are also based on the direction of FIG. 1A.

1-1. Adhesive Material The adhesive material 1 according to the first embodiment of the present invention includes an adhesive layer 2, an impregnation layer 3, and a constraining layer 4 as shown in FIGS. 1A to 1C.

  The adhesive layer 2 is a layer for adhering the adhesive material 1 to an adherend, and is formed in a sheet shape having a substantially rectangular shape in plan view. The adhesive layer 2 has adhesiveness (tackiness) at least on the lower surface (lower surface) at room temperature (25 ° C.).

  The adhesive layer 2 is preferably a permeable adhesive layer. Specifically, the adhesive layer 2 includes an adhesive portion 21 that is partially formed on the lower surface and the upper surface of the permeable substrate 20 such as a nonwoven fabric or a woven fabric.

  The fiber constituting the nonwoven fabric or woven fabric is preferably a resin fiber made of a thermoplastic resin or a thermosetting resin. Specific examples include olefin resins such as polyethylene and polypropylene, polyester resins such as polyethylene terephthalate, polyamide resins such as nylon, and cellulose fibers. These resin fibers may be used alone or in combination.

  The average fiber diameter is, for example, 0.1 μm or more, preferably 0.5 μm or more, and for example, 200 μm or less, preferably 100 μm or less.

  The production method of the nonwoven fabric is not limited, and examples thereof include a dry method, a wet method, a spun bond method, a thermal bond method, a chemical bond method, a stitch bond method, a needle punch method, a melt blow method, a spun lace method, and a steam jet method. .

  The weaving method of the woven fabric is not limited, and examples thereof include plain weave, Nanako weave, cocoon weave, twill weave and satin weave.

The weight of the permeable substrate 20 is, for example, 10 g / m ² or more, preferably 20 g / m ² or more, and for example, 500 g / m ² or less, preferably 300 g / m ² or less.

  The thickness of the transmissive substrate 20 is, for example, 5 μm or more, preferably 10 μm or more, and for example, 500 μm or less, preferably 300 μm or less.

  As shown in FIG. 1C, the adhesive portion 21 is formed on the lower surface and the upper surface of the permeable base material 20 so as to have a plurality of straight lines (stripes) extending in the left-right direction at intervals. Each of the left and right end edges of the adhesive portion 21 is coincident with each of the left and right end edges of the transmissive substrate 20 in a bottom view.

  The adhesive portion 21 is formed from an adhesive composition.

  The adhesive composition is preferably a pressure sensitive adhesive composition.

  Specific examples of the pressure-sensitive adhesive composition include rubber compositions (natural rubber composition, synthetic rubber composition) such as an epoxy resin composition, and more preferably a synthetic rubber composition. Is mentioned.

  The synthetic rubber composition is preferably an acrylic rubber composition containing acrylic rubber as a main component.

  The acrylic rubber can be obtained by polymerizing a monomer component mainly composed of (meth) acrylic acid ester.

  The (meth) acrylic acid ester that is the main component of the monomer component is a methacrylic acid ester and / or an acrylic acid ester, and examples thereof include (meth) acrylic acid esters having 2 to 14 carbon atoms in the alkyl group. . In addition to (meth) acrylic acid ester, a monomer copolymerizable with (meth) acrylic acid ester (for example, carboxyl group-containing monomer, amide group-containing monomer, glycidyl group-containing monomer, etc.) Also good.

  When the solidifying component impregnated in the impregnation layer 3 (described later) is an epoxy resin composition, the adhesive composition is preferably a mixture of an epoxy resin and an acrylic rubber, or a viscosity-adjusted product of an epoxy resin. Can be mentioned. Thereby, an adhesive composition can be hardened simultaneously with hardening of the solidification component 7 by the hardening | curing agent contained in the solidification component 7, and adhesiveness can be improved.

  In addition, as for the epoxy resin, the thing similar to the epoxy resin mentioned by the impregnation layer 3 (after-mentioned) is mentioned. The viscosity-adjusted product of the epoxy resin is a composition containing a reactive diluent (described later) in addition to the epoxy resin, for example.

  The adhesive layer 2 can be produced by applying and drying the adhesive composition on the lower and upper surfaces of the permeable substrate 20 by a known method. The adhesive layer 2 can also be manufactured by sticking a commercially available adhesive tape or pressure-sensitive adhesive tape to the permeable substrate 20.

  The width X of the adhesive portion 21 (the length in the front-rear direction, the direction orthogonal to the direction in which the adhesive portion 21 extends) is, for example, 1 mm or more, preferably 2 mm or more, and for example, 10 mm or less, preferably 8 mm or less.

  The distance Y between the two adhesive portions 21 adjacent to each other (that is, the width of the base material exposed portion 22 where the adhesive portion 21 is not formed (excluding the front and rear portions)) is, for example, 1 mm or more, Preferably, it is 2 mm or more, for example, 10 mm or less, preferably 8 mm or less.

  The area ratio of the adhesive portion 21 occupying the adhesive layer 2 is, for example, 20% or more, preferably 30% or more on the lower surface and the lower surface, respectively, for example, 90% or less, preferably 80% or less. It is.

  The thickness of the adhesive part 21 is 1 micrometer or more, for example, Preferably, it is 5 micrometers or more, for example, is 300 micrometers or less, Preferably, it is 200 micrometers or less.

  The thickness of the adhesive layer 2 (total thickness of the transmissive substrate 20 and the adhesive portion 21) is, for example, 5 μm or more, preferably 10 μm or more, and for example, 600 μm or less, preferably 300 μm or less.

  The impregnation layer 3 is a layer for holding the solidifying component in the impregnation layer 3 and is formed in a sheet shape having a substantially rectangular shape in plan view.

  The impregnation layer 3 is laminated at a substantially central portion of the upper surface (upper surface) of the adhesive layer 2. The impregnation layer 3 is laminated on the upper surface of the adhesive layer 2 so as to be included in the adhesive layer 2 when projected in the thickness direction. Specifically, the impregnation layer 3 is laminated so that the peripheral edge of the impregnation layer 3 is located inside the peripheral edge of the adhesive layer 2 in plan view. That is, the impregnation layer 3 is laminated on a portion (that is, the inner portion 13) other than a portion (that is, the outer peripheral portion 12) to which the constraining layer 4 (described later) is bonded on the upper surface of the adhesive layer 2. The impregnation layer 3 is fixed to the adhesive layer 2 by being bonded to the inner portion 13 of the adhesive layer 2.

  Examples of the impregnated layer 3 include foams and fiber structures.

  Examples of the foam include polyurethane foam, polyester foam, polyolefin foam (polyethylene foam, polypropylene foam, ethylene propylene diene rubber foam, ethylene propylene rubber foam, and the like).

  As the foam, for example, an open-cell foam having an expansion ratio of 5 to 100 times is used.

  The fiber structure is a structure in which a large number of fibers are aggregated. Examples thereof include inorganic fibers such as glass wool, natural fibers such as cotton cloth, and synthetic resin fibers such as synthetic wool.

The basis weight of the fiber structure is, for example, 5 to 50 kg / m ³ .

  As the impregnated layer 3, a foam is preferably used. Thereby, the solidifying component can be uniformly impregnated in the impregnation layer 3.

  The thickness of the impregnated layer 3 is appropriately determined according to the solidifying component and the like, but is, for example, 0.5 mm or more, preferably 1 mm or more, and, for example, 10 mm or less from the viewpoint of reinforcement and workability. Preferably, it is 5 mm or less.

  Moreover, the thickness of the impregnation layer 3 is preferably thicker than the other layers (adhesive layer 2, constraining layer 4) of the adhesive material 1, for example, more than 50% of the thickness of the adhesive material 1, For example, it is 98% or less, preferably 95% or less.

  By setting the thickness of the impregnated layer 3 within the above range, the solidifying component can be uniformly impregnated into the impregnated layer 3, and the adherend can be reinforced uniformly and stably.

  The constraining layer 4 is a layer for constraining the adhesive layer 2 and / or the impregnated layer 3 and imparting toughness to the adhesive layer 2 and / or the impregnated layer 3 to improve the strength. The constraining layer 4 is formed in a substantially rectangular sheet shape in plan view, and specifically, the constraining layer 4 is formed in the same shape as the adhesive layer 2 in plan view.

  The constraining layer 4 is laminated on the upper surface of the adhesive layer 2 so as to cover the impregnation layer 3. The constraining layer 4 is laminated so as to include the impregnation layer 3 when projected in the thickness direction, and is laminated so that the outer peripheral edge of the constraining layer 4 coincides with the outer peripheral edge of the adhesive layer 2. That is, in the constraining layer 4, the lower surface of the substantially central portion 18 of the constraining layer 4 is in contact with the upper surface of the impregnation layer 3, and the lower surface of the outer peripheral portion 14 of the constraining layer 4 is in contact with the upper surface of the outer peripheral portion 12 of the adhesive layer 2. Are stacked.

  The constraining layer 4 is fixed to the adhesive layer 2 by bonding the outer peripheral portion 14 of the constraining layer 4 and the outer peripheral portion 12 of the adhesive layer 2. Thereby, the impregnation layer 3 is sandwiched between the adhesive layer 2 and the constraining layer 4.

  Examples of the constraining layer 4 include fiber cloth such as glass cloth and carbon fiber cloth, for example, metal foil.

  The glass cloth is a cloth made of glass fiber, and known ones can be used.

  The carbon fiber cloth is made of a fiber mainly composed of carbon and includes a known one.

  These fiber cloths include a resin-impregnated cloth obtained by impregnating a fiber cloth with a synthetic resin and a cover laminated cloth in which a synthetic resin cover is laminated on the fiber cloth.

  Examples of the synthetic resin include acrylic resin, polyethylene, polyethylene terephthalate (PET), and ethylene-vinyl acetate copolymer (EVA).

  Examples of the metal foil include aluminum foil and steel foil.

  Among these constrained layers 4, fiber cloth is preferable from the viewpoint of strength and flexibility, and glass cloth is more preferable.

  The thickness of the constraining layer 4 is, for example, 50 μm or more, preferably 80 μm or more, and, for example, 500 μm or less, preferably 300 μm or less.

  The thickness of the sticking material 1 is 0.5 mm or more, for example, Preferably, it is 1 mm or more, for example, is 12 mm or less, Preferably, it is 6 mm or less.

  The sticking material 1 can also be equipped with the peeling base material 5, as shown to the virtual line of FIG. 1A-FIG. 1C.

  The peeling base material 5 is formed in a substantially rectangular sheet shape in plan view, and for example, a peeling process (for example, a silicone process) is performed on the upper surface thereof. The peeling substrate 5 is laminated on the lower surface of the adhesive layer 2 so as to include the adhesive layer 2 when projected in the thickness direction.

  As the peeling substrate 5, for example, a polyester film (PET film or the like), for example, a fluorine film made of a fluorine polymer (PTFE or the like), for example, an olefin resin film made of an olefin resin (polyethylene, polypropylene or the like), Examples thereof include plastic base films such as a polyvinyl chloride film, a polyimide film, a polyamide film (such as a nylon film), and a rayon film. Further, for example, papers such as high-quality paper, Japanese paper, kraft paper, glassine paper, synthetic paper, and top coat paper are also included. These peeling base materials 5 may be a single layer or may be a multilayered composite.

  The thickness of the peeling substrate 5 is, for example, 1 to 500 μm.

  For example, when the adhesive material 1 includes the release substrate 5, the adhesive layer 2, the impregnation layer 3, and the constraining layer 4 are sequentially laminated on the upper surface (the surface subjected to the release treatment) of the release substrate 5. can get.

1-2. Next, with reference to FIG. 2A-FIG. 2D, the method to manufacture the reinforcement member 6 using the sticking material 1 is demonstrated.

  The manufacturing method of the reinforcing member 6 includes a preparation process for preparing the adhesive material 1, an impregnation process for impregnating the solidifying component 7 into the impregnation layer 3 of the adhesive material 1, and an adhesion layer 2 of the adhesive material 1. A bonding step of bonding to the body 8, and a step of solidifying the solidifying component 7;

  First, as shown to FIG. 2A, the sticking material 1 is prepared (preparation process).

  As shown by the phantom line, when the sticking material 1 includes the peeling base material 5, the peeling base material 5 is peeled from the adhesive layer 2 in accordance with the virtual line.

  Next, as shown in FIG. 2B, the impregnated layer 3 of the sticking material 1 is impregnated with the solidifying component 7 (impregnation step). Specifically, the impregnated layer 3 is impregnated with a room temperature curable two-component curable resin composition 7 a as an example of the solidifying component 7.

  The room temperature curable two-part curable resin composition 7a is a composition that is liquid at room temperature (25 ° C.) and is cured by mixing a plurality of liquids (two liquids that react with each other) at room temperature. Preferably, an epoxy resin composition, a urethane resin composition, etc. are mentioned.

  The epoxy resin composition contains an epoxy resin and a curing agent.

  Examples of the epoxy resin include bisphenol type epoxy resins (for example, bisphenol A type epoxy resins, bisphenol F type epoxy resins, bisphenol S type epoxy resins, water-added bisphenol A type epoxy resins, dimer acid-modified bisphenol A type epoxy resins, etc.) , Aromatic epoxy resins such as novolac type epoxy resins (eg phenol novolak type epoxy resins, cresol novolak type epoxy resins), naphthalene type epoxy resins, biphenyl type epoxy resins, eg dimer acid type epoxy resins, eg tri Nitrogen-containing ring epoxy resins such as epoxypropyl isocyanurate (triglycidyl isocyanurate) and hydantoin epoxy resins, for example, aliphatic epoxy resins, alicyclic epoxy resins (for example, Dicyclo such ring type epoxy resin), a glycidyl ether type epoxy resin, glycidyl ester type epoxy resins, and glycidyl amine type epoxy resin. These epoxy resins may be used alone or in combination.

  Among these epoxy resins, bisphenol type epoxy resins such as bisphenol A type epoxy resins are preferable from the viewpoint of reinforcing properties.

  The epoxy equivalent of the epoxy resin is, for example, 50 g / eq or more, preferably 100 g / eq or more, and for example, 1000 g / eq or less, preferably 800 g / eq or less.

  From the viewpoint of reducing the viscosity of the solidifying component 7 and easily impregnating the impregnating layer 3 with the solidifying component 7, when using a highly viscous epoxy resin, solid epoxy, etc., for example, reactive Diluents can be used in combination. That is, it can be set as the viscosity adjustment material of an epoxy resin. Examples of the reactive diluent include a glycidyl group-containing reactive diluent, and specific examples include ADEKA GLYROLL ED series (trade name, manufactured by ADEKA).

  The curing agent is a room temperature curable curing agent, and examples thereof include amine compounds, imidazole compounds, imidazoline compounds, polyamides, polymercaptans, and modified products thereof.

  Examples of the amine compounds include aliphatic polyamines such as ethylenediamine, propylenediamine, diethylenetriamine, and triethylenetetramine, aromatic amines such as metaphenylenediamine, diaminodiphenylmethane, and diaminodiphenylsulfone, and modified amines obtained by modifying these. Can be mentioned.

  Examples of the imidazole compound include methylimidazole, 2-ethyl-4-methylimidazole, ethylimidazole, isopropylimidazole, 2,4-dimethylimidazole, phenylimidazole, undecylimidazole, heptadecylimidazole, 2-phenyl-4- And methyl imidazole.

  Examples of the imidazoline compounds include methyl imidazoline, 2-ethyl-4-methyl imidazoline, ethyl imidazoline, isopropyl imidazoline, 2,4-dimethyl imidazoline, phenyl imidazoline, undecyl imidazoline, heptadecyl imidazoline, 2-phenyl-4- And methyl imidazoline.

  These curing agents may be used alone or in combination.

  Among these curing agents, an amine compound or a modified product thereof is preferably used from the viewpoints of workability and curability.

  The blending ratio of the curing agent may be blended so that, for example, the epoxy equivalent of the epoxy resin and the active hydrogen equivalent (such as amine equivalent) of the curing agent are approximately the same equivalent, specifically, 100 parts by mass of the epoxy resin. For example, it is 5 parts by mass or more, preferably 10 parts by mass or more, and for example, 500 parts by mass or less, preferably 300 parts by mass or less.

  The epoxy resin composition can contain a curing accelerator together with the curing agent, if necessary.

  Examples of the curing accelerator include urea compounds, phosphorus compounds, quaternary ammonium salts, and organometallic salts. These curing accelerators may be used alone or in combination.

  The urethane resin composition contains a polyol and a diisocyanate.

  Examples of the polyol include divalent alcohols (eg, ethylene glycol, diethylene glycol, propylene glycol, butylene glycol, hexamethylene glycol, etc.), eg, divalent alcohols and divalent basic acids (eg, adipic acid, azelaic acid). And polyester polyols such as polyether polyol, acrylic polyol, carbonate polyol, epoxy polyol, caprolactone polyol, and the like. These polyols may be used alone or in combination.

  Among these, for example, polyester polyol (preferably amorphous polyester polyol), carbonate polyol (preferably amorphous carbonate polyol), polyether polyol, and the like can be given.

  The number average molecular weight of the polyol is, for example, 400 or more, preferably 600 or more, and for example, 2000 or less, preferably 1000 or less.

  Examples of diisocyanates include aromatic, aliphatic, and alicyclic diisocyanates. Examples of these diisocyanates include tolylene diisocyanate, diphenylmethane diisocyanate, hexamethylene diisocyanate, xylylene diisocyanate, hydrogenated xylylene diisocyanate, isophorone diisocyanate, hydrogenated diphenylmethane diisocyanate, 1,5-naphthylene diisocyanate, 1,3-phenylene. Diisocyanate, 1,4-phenylene diisocyanate, butane-1,4-diisocyanate, 2,2,4-trimethylhexamethylene diisocyanate, 2,4,4-trimethylhexamethylene diisocyanate, cyclohexane-1,4-diisocyanate, dicyclohexylmethane 4,4-diisocyanate, 1,3-bis (isocyanatomethyl) cyclohexane, methylcyclo Hexane diisocyanate, m- tetramethylxylylene diisocyanate. In addition, these dimers, trimers (isocyanurate-type modified products), burette-type modified products, allophanate-type modified products, and polyphenylmethane polyisocyanate may be mentioned. These diisocyanates may be used alone or in combination.

  The blending ratio of the polyol and the diisocyanate is not limited, but the diisocyanate is blended so that the NCO / OH (equivalent ratio) is, for example, 1.0 to 2.0 with respect to the polyol.

  In addition to the above components, the solidifying component 7 is, for example, a softener, a filler, a tackifier, a lubricant, an anti-aging agent, a thixotropic agent (for example, montmorillonite), fats and oils (for example, animal fats and plants, Oil, mineral oil, etc.), pigments, stabilizers, plasticizers, antioxidants, ultraviolet absorbers, colorants, fungicides, flame retardants, and other known additives may be contained in appropriate proportions.

  When the solidifying component 7 is the two-component curable resin composition 7a, the curing time until complete curing is, for example, 30 minutes to 7 days.

When the sticking material 1 is mainly used as a reinforcing application, preferably, the solidification property 7 (solidified product 23) subjected to the solidification step has an elastic modulus at 25 ° C. of 1 × 10 ⁷ Pa or more. Use ingredients. The elastic modulus is more preferably 2 × 10 ⁷ Pa or more, and for example, 5 × 10 ⁷ Pa or less.

  The elastic modulus of the solidifying component 7 is measured by, for example, a tensile test or a bending test.

  Further, when the adhesive material 1 is mainly used for vibration damping applications, preferably, the viscoelastic spectrum in the solidifying component 7 (solidified product 23) subjected to the solidification step has a tan δ having a value of 0.1 or more. Use solidifying ingredients. More preferably, it has a tan δ of 0.3-5. The viscoelastic spectrum was measured using a rheometer (device name “ARES”, manufactured by Rheometric), temperature range: −20 ° C. to 20 ° C., deformation mode: shear mode, heating rate: 5 ° C./min, measurement frequency. It is obtained when the solidified product 23 is subjected to dynamic viscoelasticity measurement under the condition of 1 Hz.

  As a method of impregnating the impregnation layer 3 with the solidifying component 7, for example, (1) after mixing the first liquid and the second liquid, the impregnation layer 3 is impregnated with the mixed liquid (two-component curable resin composition). And (2) a method of impregnating the impregnation layer 3 with one liquid (first liquid or second liquid) in advance and then impregnating the other liquid (second liquid or first liquid).

  For example, when the solidifying component 7 is an epoxy resin composition, the first liquid is a liquid containing an epoxy resin, and the second liquid is a liquid containing a curing agent. When the solidifying component 7 is a urethane resin composition, the first liquid is a liquid containing a polyol, and the second liquid is a liquid containing a diisocyanate.

  When the epoxy resin composition contains a curing accelerator, the impregnation layer 3 can be impregnated with the curing accelerator in advance by the method (1).

  The viscosity of the solidifying component 7 (first liquid and second liquid) is, for example, 30 Pa · s (25 ° C.) or less, preferably 20 Pa · s (25 ° C.) or less. The viscosity is measured by, for example, the Canon Fensuke method. By setting the viscosity of the solidifying component 7 within the above range, the impregnation layer 3 can be easily impregnated with the solidifying component 7 by a method described later.

  The volume ratio of the solidifying component 7 to be impregnated is appropriately set according to the foaming ratio, volume and the like of the impregnated layer 3, and is, for example, 10% or more, preferably 30% or more with respect to the volume of the impregnated layer 3. For example, it is 90% or less, preferably 70% or less. By setting the volume ratio of the solidifying component 7 in the above range, the reinforcing effect of the sticking material 1 can be surely exhibited.

  As a method of impregnating the impregnation layer 3 with the solidifying component 7, for example, the injection pipe is made to reach the impregnation layer 3 by penetrating the adhesive layer 2 or the constraining layer 4 in the thickness direction using an injection pipe such as a syringe. Then, a method of injecting the solidifying component 7 into the impregnated layer 3 through the injection tube is exemplified.

  At this time, if necessary, the sticking material 1 is pressed to sufficiently penetrate the solidifying component 7 into the impregnation layer 3.

  Next, as shown in FIG. 2C, the adhesive layer 2 of the sticking material 1 is adhered to the adherend 8 (adhesion step). That is, the lower surface (sticking surface) of the adhesive layer 2 of the sticking material 1 is brought into contact with the adherend 8.

  Examples of the adherend 8 include various parts (for example, reinforced parts and vibration parts) used in the fields of automobiles, railway vehicles, home appliances, office equipment, housing equipment, machine tools, and the like.

  Specific examples of such various parts include, for example, resin molding of vehicle door plates, metal parts constituting housings (panels, etc.) of home appliances, such as automobile bumpers, instrument panels, etc. Goods.

  Examples of the metal component include a steel plate, an aluminum plate, a steel plate, a copper plate, a zinc plate, and a brass plate.

  Examples of the resin constituting the resin molded product include olefin resins such as polypropylene and polyethylene.

  After the adhesion, the solidifying component 7 impregnated in the impregnated layer 3 passes through the permeable adhesive layers (20 and 21) and reaches the surface (upper surface) of the adherend 8. That is, the solidifying component 7 is present in the gaps between the adhesive portions 21 on the lower surface and the upper surface of the permeable adhesive layer (20 and 21) within a range overlapping with the impregnated layer 3 when projected in the thickness direction.

  Next, as shown in FIG. 2D, the solidifying component 7 impregnated in the impregnation layer 3 is solidified (solidification step). Specifically, the room temperature curable two-component curable resin composition 7a is solidified at room temperature. Specifically, the sticking material 1 is allowed to stand at room temperature, for example, 10 to 40 ° C. in a state where the two-component curable resin composition 7 a is impregnated in the impregnation layer 3.

  The standing time is determined according to the components of the two-component curable resin composition 7a, and is, for example, 30 minutes or longer, preferably 1 day or longer.

  Thereby, a solidified product (cured product) is formed by solidifying (curing) the two-component curable resin composition 7a.

  Then, the reinforcing member 6 including the solidified layer 9 in which the adhesive layer 2 and the impregnated layer 3 are filled with the solidified material 23 and the constraining layer 4 is obtained. Further, on the lower surface and the upper surface of the permeable adhesive layer (20 and 21), the solidified product 23 exists in the gaps between the adhesive portions 21 within a range overlapping with the impregnation layer 3 when projected in the thickness direction.

  In the manufacturing method of the reinforcing member 6, the adhesive layer 2, the constraining layer 4 in which the outer peripheral portion 14 is laminated on the outer peripheral portion 12 of the adhesive layer 2, and the inner portion 13 of the adhesive layer 2 are solidified. The sticking material 1 provided with the impregnation layer 3 which can impregnate the sex component 7 is used.

  That is, since the bonding material 1 includes the adhesive layer 2, the bonding material 1 can be bonded to the adherend 8 at room temperature. Therefore, the adherend 8 can be reinforced while reducing the load caused by heating.

  Moreover, since the impregnation layer 3 and the constraining layer 4 are laminated | stacked with respect to the contact bonding material 1 with the bonding material 1, when bonding the bonding material 1 and manufacturing the reinforcement member 6, the bonding layer 2 is attached. In addition, relative displacement between the impregnated layer 3 and the constraining layer 4 can be suppressed. Therefore, workability is good and the adherend 8 can be reinforced by a simple method.

  Moreover, in the manufacturing method of the reinforcing member 6, the impregnation step of impregnating the impregnated layer 3 of the adhesive material 1 with the room temperature curable two-component curable resin composition 7 a as the solidifying component 7, the adhesive layer of the adhesive material 1 2 is bonded to the adherend 8, and the solidifying step of curing the two-component curable resin composition 7 a impregnated in the impregnated layer 3 at room temperature.

  Therefore, when the adherend 8 is reinforced, the amount of the solidifying component 7 (solidified material 23) to be impregnated into the impregnated layer 3 can be adjusted according to the purpose (reinforcing purpose, damping purpose) and degree. it can.

  Moreover, since the room temperature curable two-component curable resin composition 7a is used as the solidifying component 7, it is excellent in storage and storage stability until the reinforcing member 6 is manufactured. Moreover, since the reinforcing member 6 (laminated body of the adhesive layer 2, the solidified layer 9, and the constraining layer 4) is obtained without requiring heating, the thermal load on the adherend 8 can be more reliably reduced.

  Further, since the impregnated layer 3 is impregnated with the solidifying component 7, the solidified layer 9 having a uniform thickness can be formed. Therefore, the adherend 8 can be reinforced uniformly and stably.

  Further, when the adhesive layer 2 is a permeable adhesive layer (20, 21), the solidifying component 7 impregnated in the impregnated layer 3 permeates the permeable adhesive layer (20, 21) and adheres to the adherend. Easily reach 8 and solidify. For this reason, the reinforcing member 6 manufactured from the sticking material 1 can be more firmly bonded to the adherend 8.

1-3. Modified Example of First Example In FIGS. 2A to 2D, the reinforcing member 6 is manufactured by using a room temperature curable two-component curable resin composition 7 a as an example of the solidifying component 7. As shown in FIG. 3D, for example, a reinforcing member can be manufactured using the thermoplastic resin composition 7b as an example of a solidifying component.

  From the viewpoint of heat-sealing the thermoplastic resin composition 7b in a relatively low temperature range (for example, 120 ° C. or lower, preferably 100 ° C. or lower, for example, 30 ° C. or higher, preferably 40 ° C. or higher). Preferably, a rubber composition containing rubber is used.

  Examples of the rubber include butyl rubber, styrene copolymer, polyisobutylene rubber, polyisoprene rubber, isobutylene / isoprene rubber, polybutadiene rubber (for example, 1,4-polybutadiene rubber, syndiotactic-1,2-polybutadiene rubber, Acrylonitrile / butadiene rubber), chloroprene rubber, nitrile rubber, nitrile butyl rubber, acrylic rubber, recycled rubber, natural rubber and the like. Examples of the styrene copolymer include styrene / butadiene rubber (for example, styrene / butadiene random copolymer, styrene / butadiene / styrene block copolymer, styrene / ethylene / butadiene copolymer, styrene / ethylene / butadiene / copolymer). Styrene block copolymer), styrene / isoprene rubber (for example, styrene / isoprene / styrene block copolymer), styrene / isoprene / butadiene rubber and the like. These rubbers may be used alone or in combination.

  Among these rubbers, butyl rubber and styrene copolymer are preferable from the viewpoints of adhesiveness, heat resistance, vibration damping, and the like.

  The thermoplastic resin composition 7b may contain the above-mentioned known additives in an appropriate ratio as necessary.

  The manufacturing method of the reinforcing member 6 in the case where the solidifying component 7 is the thermoplastic resin composition 7b includes a preparation process, an impregnation process, an adhesion process, and a solidification process, as shown in FIGS.

  The preparation process shown in FIG. 3A is the same as the process described above with reference to FIG. 2A.

  Next, as shown in FIG. 3B, the impregnated layer 3 of the sticking material 1 is impregnated with the solidifying component 7 (impregnation step). In the impregnation step of FIG. 3B, specifically, the impregnated layer 3 is impregnated with the molten thermoplastic resin composition 7b.

  That is, after making the thermoplastic resin composition 7b into a liquid state by heating and melting, the impregnation layer 3 is impregnated with the liquid thermoplastic resin composition 7b.

  The heating temperature of the thermoplastic resin composition 7b may be a temperature at which the thermoplastic resin melts, and is, for example, 30 ° C. or higher, preferably 40 ° C. or higher, and for example, 120 ° C. or lower, preferably 100 It is below ℃.

  The bonding process shown in FIG. 3C is similar to the process described above with reference to FIG. 2C.

  Next, as shown in FIG. 3D, the solidifying component 7 impregnated in the impregnation layer 3 is solidified (solidification step). In the solidification step of FIG. 3D, specifically, the molten thermoplastic resin composition 7b is solidified by cooling.

  Specifically, with the impregnated layer 3 impregnated with the thermoplastic resin composition 7b, the sticking material 1 is left at room temperature, for example, 10 to 40 ° C.

  The standing time may be a time during which the thermoplastic resin composition 7b is cooled and solidified by cooling, for example, 30 minutes or longer, preferably 1 day or longer.

  Thereby, the melted thermoplastic resin composition 7b is cooled and solidified. As a result, a solidified thermoplastic resin composition 7b (solidified product 23) is obtained.

  That is, the reinforcing member 6 including the solidified layer 9 in which the adhesive layer 2 and the impregnated layer 3 are filled with the solidified material 23 and the constraining layer 4 is obtained.

  When the thermoplastic resin composition 7b is used as the solidifying component 7, the reinforcing member 6 having vibration damping performance can be easily manufactured. Specifically, the reinforcing member 6 including the solidified material 23 having a tan δ of 0.1 or more can be easily obtained in the range of −20 ° C. to 20 ° C. in the viscoelastic spectrum.

  Further, when the reinforcing member 6 is manufactured using the thermoplastic resin composition 7b as the solidifying component 7, it is easy to peel off and reuse the adherend 8 as compared with the two-component curable resin composition 7a. .

  Moreover, in the manufacturing method of FIG. 2A-FIG. 2D mentioned above or FIG. 3A-FIG. 3D, after implementing an impregnation process, although the adhesion process is implemented, the order in which each process is implemented is not restrict | limited in particular, For example, An adhesion process can also be implemented after implementing a solidification process. Furthermore, after performing an adhesion | attachment process, an impregnation process and a solidification process can also be implemented.

  Moreover, in the manufacturing method of FIG. 2A-2D or FIG. 3A-3D mentioned above, after peeling the peeling base material 5, the impregnation layer 3 is impregnated in the impregnation layer 3, For example, although not shown in figure, After the impregnation layer 3 is impregnated with the solidifying component 7, the release substrate 5 can also be peeled off.

  Moreover, in embodiment of FIG. 1A-FIG. 1C, in the contact bonding layer 2, although the adhesive agent part 21 is formed on the transparent base material 20 on the permeable base material 20, for example, although not shown in figure, the adhesive agent part 21 is Further, it can be formed in a lattice shape or a plurality of dot shapes (polka dot pattern shapes).

  In the embodiment of FIGS. 1A to 1C, the adhesive layer 2 has the adhesive portion 21 partially formed on the transparent base material 20. For example, although not illustrated, a plurality of through holes are formed. The adhesive portion 21 can also be formed on the entire surface of the transparent substrate 20 (nonwoven fabric or woven fabric). The diameter (maximum width) of the through hole is, for example, 0.1 to 1 mm.

  Further, in the embodiment of FIGS. 1A to 1C, the adhesive layer 2 has the adhesive portion 21 partially formed on the transparent base material 20. For example, as shown in FIGS. 4A and 4B, Layer 2 can be an adhesive mesh layer 2a. 4A and 4B, members similar to those in the embodiment of FIGS. 1A to 1C are denoted by the same reference numerals, and the details thereof are omitted.

  The adhesive mesh layer 2a is formed by covering the surface of a mesh (including a net) with an adhesive.

  The mesh is a net in which a plurality of fibers are laminated or woven in a lattice shape, and a plurality of openings 15 penetrating in the thickness direction are formed.

  The average of the maximum lengths of the openings 15 is, for example, 10 μm or more, preferably 50 μm or more, and for example, 300 μm or less, preferably 200 μm or less.

  The fiber constituting the mesh is preferably a resin fiber, and specifically, the same fiber as described above can be used.

  Examples of the adhesive include those similar to the adhesive composition described above for the adhesive layer 2.

  A commercially available mesh can be used for the adhesive mesh layer 2a. It can also be obtained by impregnating a commercially available mesh with the adhesive composition and drying it.

  The adhesive material of FIG. 4A and FIG. 4B also has the same effect as the adhesive material 1 of FIG. 1A-FIG. 1C.

  Moreover, in the embodiment of FIGS. 1A to 1C, the adhesive layer 2 is a permeable adhesive layer, but may be a non-permeable adhesive layer 2b as shown in FIGS. 5A and 5B, for example. .

  The non-permeable adhesive layer 2b is a layer in which the solidifying component 7 cannot permeate in the thickness direction, and is a layer in which a through hole, an opening, or the like is not formed. For example, it can be obtained by applying and drying the adhesive composition on the release substrate 5 or the like.

  The non-permeable adhesive layer 2b may be, for example, a single layer made of only the adhesive composition, or a base material laminate in which the adhesive composition is laminated on one surface (lower surface) or both surfaces of the base material. It may be an adhesive layer 2 of the mold. Furthermore, a commercially available adhesive tape or adhesive tape can also be used.

  Preferably, the aspect of FIG. 1A-FIG. 1C is mentioned from a viewpoint which the solidification component 7 reaches | attains the to-be-adhered body 8 through the contact bonding layer 2, and can adhere | attach more firmly.

2. Second Embodiment In FIGS. 6A and 6B, members similar to those of the embodiment of FIGS. 1A to 1C are denoted by the same reference numerals, and the details thereof are omitted.

  The adhesive material 10 in 2nd Embodiment is provided with the contact bonding layer 2, the constraining layer 4, the impregnation layer 3, and the cover layer 11, as shown to FIG. 6A and 6B.

  The constraining layer 4 is laminated on the upper surface (the other surface) of the adhesive layer 2. The constraining layer 4 is formed in the same shape as the adhesive layer 2 in plan view, and is laminated on the entire upper surface of the adhesive layer 2. The constraining layer 4 is laminated on the upper surface of the adhesive layer 2 so as to include the impregnation layer 3 when projected in the thickness direction.

  The impregnation layer 3 is laminated on the lower surface (one surface) of the adhesive layer 2. The impregnation layer 3 is laminated at a substantially central portion of the lower surface of the adhesive layer 2 so as to be included in the adhesive layer 2 when projected in the thickness direction. Specifically, the impregnation layer 3 is laminated so that the peripheral edge of the impregnation layer 3 is located inside the peripheral edge of the adhesive layer 2 in plan view. That is, when the impregnation layer 3 is disposed on the lower surface of the adhesive layer 2, the outer peripheral portions (the inner peripheral portion 16 and the outer peripheral end portion 17) of the lower surface of the adhesive layer 2 are exposed.

  The cover layer 11 is a layer for protecting the impregnation layer 3 and is formed in a sheet shape having a substantially rectangular shape in plan view.

  The cover layer 11 is laminated on the lower surface of the adhesive layer 2 so as to cover the impregnation layer 3. The cover layer 11 is laminated so as to include the impregnated layer 3 and so as to be included in the adhesive layer 2 when projected in the thickness direction. Specifically, in the thickness direction, the upper surface of the substantially central portion of the cover layer 11 is in contact with the lower surface of the impregnation layer 3 in the thickness direction, and the upper surface of the outer peripheral portion of the cover layer 11 is the lower surface of the inner peripheral portion 16 of the adhesive layer. It is laminated so that it contacts. Further, the outer peripheral edge 17 on the lower surface of the adhesive layer 2 is exposed from the cover layer 11.

  The cover layer 11 is preferably a layer made of a nonwoven fabric.

  As a nonwoven fabric, the same thing as the nonwoven fabric of the above-mentioned contact bonding layer 2 is mentioned.

  The cover layer 11 may be formed with a large number of through holes penetrating in the thickness direction, or may not be formed with through holes. From the viewpoint of allowing the solidifying component 7 to easily reach the adherend 8 through the through-hole when adhering to the adherend 8 and the reinforcing member 6 can adhere more firmly to the adherend 8. Preferably, a through hole is formed.

  The thickness of the cover layer 11 is, for example, 5 μm or more, preferably 10 μm or more, and for example, 500 μm or less, preferably 300 μm or less.

  In addition, when manufacturing the reinforcement member 6 using the adhesive material 10 of 2nd Embodiment, the outer periphery edge part 17 of the lower surface of the cover layer 11 and the lower surface of the contact bonding layer 2 is contacted to the to-be-adhered body 8 at an adhesion | attachment process. Let

  Further, as a method of impregnating the impregnation layer 3 with the solidifying component 7, for example, an injection tube such as a syringe is used to penetrate the constraining layer 4 / adhesive layer 2 or the cover layer 11 in the thickness direction, and thereby the injection tube And the like, and then the solidifying component 7 is injected into the impregnated layer 3 through the injection tube.

  The adhesive material 10 of 2nd Embodiment also has the same effect as the adhesive material 1 of FIG. 1A-FIG. 1C. From the viewpoint of bonding more firmly and imparting more excellent reinforcement hardness, the adhesive 1 of FIGS. 1A to C is preferable.

  Next, although this invention is demonstrated based on an Example and a comparative example, this invention is not limited by the following Example. The numerical values of the examples shown below can be substituted for the numerical values (that is, the upper limit value or the lower limit value) described in the embodiment.

Example 1
Double-sided adhesive tape (adhesive part, Nitto) 5 mm wide x 170 mm long x 130 μm thick on both sides of a non-woven fabric (permeable substrate, width 70 mm x length 170 mm x thickness 22 μm, formed by polyester non-woven fabric, spunbond method) An electric tape manufactured by Denko Co., Ltd., acrylic tape, “No. 5000”) was layered at intervals of 5 mm to obtain an adhesive layer having an adhesive portion. A urethane foam (impregnation layer, width 50 mm × length 150 mm × thickness 3 mm) and glass cloth (constraint layer, width 70 mm × length 170 mm × thickness 200 μm) were laminated in order on the substantially central portion of one surface of the adhesive layer. Thereby, the sticking material (refer FIG. 1A-FIG. 1C) of Example 1 was manufactured.

  Next, as a solidifying component, a bisphenol A type epoxy resin (first liquid, manufactured by Mitsubishi Chemical Corporation, trade name “828”) and a modified aliphatic polyamine curing agent (second liquid, manufactured by Mitsubishi Chemical Corporation, trade name “ST12”). )) And a room temperature curable two-component curable resin composition.

Next, the first liquid and the second liquid were mixed, and 10 g (11 cm ³ ) of this mixed liquid was passed through the glass cloth side using a syringe and injected into the urethane foam. At this time, the sticking material was pressed from the glass cloth side, and the urethane foam was sufficiently impregnated with the mixed solution.

  Next, the adhesive layer was attached to a degreased SPCC steel plate (width 80 mm × length 200 mm × thickness 0.8 mm), and then allowed to stand at room temperature for 7 days to solidify (harden) the solidifying component.

  Thereby, the reinforcing member of Example 1 stuck to the SPCC steel plate was manufactured.

  The bending strength of the reinforcing member (test piece) adhered to the SPCC steel plate was evaluated by a three-point bending test. The results are shown in Table 1.

Example 2
A glass cloth (constraint layer, width 70 mm × length 170 mm × thickness 200 μm) was used, and a double-sided adhesive tape (adhesive layer, manufactured by Nitto Denko Corporation, acrylic tape, “No. 5000”, width) 70 mm × length 170 mm × thickness 130 μm). Next, a urethane foam (impregnated layer, width 50 mm × length 150 mm × thickness 3 mm) was attached to a substantially central portion of one surface (lower surface) of the adhesive tape. Next, a non-woven fabric (cover layer, width 60 mm × length 160 mm × thickness 50 μm, polyester non-woven fabric, formed by the spunbond method) covers the entire lower surface of the urethane foam and contacts the inner periphery of the lower surface of the adhesive tape. As shown in FIG. Thereby, the adhesive material (refer FIG. 6A-FIG. 6B) of Example 2 was manufactured.

  Next, a room temperature curable two-component curable resin composition having the first and second liquids as in Example 1 was prepared as a solidifying component.

Next, the first liquid and the second liquid were mixed, and 10 g (11 cm ³ ) of this mixed liquid was passed through the glass cloth side using a syringe and injected into the urethane foam. At this time, the sticking material was pressed from the glass cloth side, and the urethane foam was sufficiently impregnated with the mixed solution.

  Next, the adhesive layer was attached to a degreased SPCC steel plate (width 80 mm × length 200 mm × thickness 0.8 mm), and then allowed to stand at room temperature for 7 days to solidify (harden) the solidifying component.

  Thereby, the reinforcing member of Example 2 stuck to the SPCC steel plate was manufactured.

  The bending strength of the reinforcing member (test piece) adhered to the SPCC steel plate was evaluated by a three-point bending test. The results are shown in Table 1.

Comparative Example 1
The SPCC steel plate to which the reinforcing member was not attached was designated as Comparative Example 1, and the bending strength of Comparative Example 1 was evaluated. The results are shown in Table 1.

  In the three-point bending test, as shown in FIG. 7, the test piece 6 was placed so that the SPCC steel plate 8 faced upward, and the distance between fulcrums was set to 100 mm by a universal testing machine (manufactured by Minebea). The center (length direction and width direction center) of the piece was pressed from the SPCC steel plate 8 side at a speed of 5 mm / min with an indenter having a diameter of 10 mm. And the bending strength when the test piece 6 displaced by 1 mm and 2 mm, respectively was measured.

1 Adhesive material
2 Adhesive layer 3 Impregnated layer 4 Constrained layer 7 Solidifying component 7a Two-part curable resin composition 7b Thermoplastic resin composition 8 Substrate

Claims (13)

  Adhesive layer, constrained layer that is at least partially laminated on the adhesive layer, and at least part of the adhesive layer other than the part where the constrained layer is laminated, and can be impregnated with a solidifying component And an impregnated layer.   The adhesive material according to claim 1, wherein the impregnated layer is a foam or a fiber structure.   The adhesive material according to claim 1, wherein the constraining layer is a fiber cloth.   The adhesive material according to any one of claims 1 to 3, wherein the adhesive layer contains a pressure-sensitive adhesive composition.   The impregnated layer is laminated on one surface of the adhesive layer, and the constraining layer is laminated on one surface of the adhesive layer so as to cover the impregnated layer. The sticking material as described in any one of 1-4.   The impregnation layer is laminated on one surface of the adhesive layer, and the constraining layer is laminated on the other surface of the adhesive layer so as to include the impregnation layer when projected in the thickness direction. The sticking material according to any one of claims 1 to 4, which is characterized. A preparation process for preparing the adhesive material according to claim 1,
An impregnation step of impregnating the impregnation layer of the adhesive material with a solidifying component;
An adhesion step of adhering the adhesive layer of the adhesive to an adherend, and
Comprising a solidification step of solidifying the solidifying component impregnated in the impregnation layer;
A method for manufacturing a reinforcing member, wherein a reinforcing member that reinforces the adherend is manufactured by performing the step. The solidifying component is a room temperature curable two-component curable resin composition,
The method for producing a reinforcing member according to claim 7, wherein in the solidifying step, the two-component curable resin composition is cured at room temperature.   The method for producing a reinforcing member according to claim 8, wherein the two-component curable resin composition is at least one selected from the group consisting of an epoxy resin composition and a urethane resin composition. The solidifying component is a thermoplastic resin composition;
In the impregnation step, the molten thermoplastic resin composition is impregnated,
The method for producing a reinforcing member according to claim 7, wherein in the solidifying step, the melted thermoplastic resin composition is solidified by cooling.   A reinforcing member manufactured by the method for manufacturing a reinforcing member according to claim 7. The reinforcing member according to claim 11, wherein an elastic modulus at 25 ° C. of the solidifying component subjected to the solidifying step is 1 × 10 ⁷ Pa or more. When the solidifying component subjected to the solidification step is subjected to dynamic viscoelasticity measurement under the following conditions, the viscoelastic spectrum obtained is tan δ having a value of 0.1 or more in the range of −20 ° C. to 20 ° C. The reinforcing member according to claim 11, comprising:
Deformation mode: Shear mode Temperature increase rate: 5 ° C / min Measurement frequency: 1Hz

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