JP2002292769A - Composite structure and manufacturing method therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a composite structure which is almost free from the separation between FRP and a resin, and shows a super performance such as weatherability, wear resistance, mar resistance, load resistance or vehicle travel durability even under severe conditions of an outdoor parking lot or the like and a manufacturing method for the composite structure. SOLUTION: This composite structure is characterized in that a heat-curable resin containing fibers is laminated on the upper surface of a base and a first aggregate layer is formed on a layer of the heat-curable resin containing fibers, partially buried in the latter. The manufacturing method for the composite structure comprises the steps to laminate an uncured heat-curable resin containing fibers on the upper surface of the base and spread first aggregate over the heat-curable resin layer, partially buried in the latter, in such a state that the heat-durable resin is uncured and further, form the first aggregate layer by curing the heat-curable resin.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite structure excellent in weather resistance, abrasion resistance, scratch resistance, waterproofness, delamination prevention performance, design property, etc. even under severe conditions, and a method for producing the same.

[0002]

2. Description of the Related Art As a waterproofing means based on a concrete structure such as a rooftop, a pool, a floor, a parking lot, an outdoor parking lot, etc., a fiber-containing thermosetting resin (hereinafter referred to as "FRP") is used.
Are known. FRP is a resin whose heat resistance, rigidity, etc. are reinforced by glass fiber etc., and has high strength, and is required to have severe weather resistance, abrasion resistance, abrasion resistance, load resistance, vehicle running durability, etc. It is frequently used under certain conditions.

A composite structure which is used in such fields as outdoor parking lots, rooftop amusement parks, rooftop rehabilitation facilities, etc., and is required to have weather resistance, abrasion resistance, scratch resistance, load resistance and vehicle running durability. As a body, FRP is applied to the surface of a conventional substrate such as concrete and cured, and then a coloring resin for intermediate coating or surface smoothing is applied thereon. After spraying the material, the colored resin or the like is cured, and a colored top coat is applied thereon. In some cases, the coloring resin is directly applied without spraying the aggregate.

[0004]

However, the above-mentioned composite structure uses a process of applying an FRP, curing it, and then applying a resin for imparting surface smoothness to the composite structure. There is a problem that the resin is easily peeled between the layers. This tendency was remarkable especially when there was a process interval between the FRP layer and the resin for imparting surface smoothness. In addition, since FRP contains a fiber reinforcing material, the elongation of the material is extremely small, and therefore, cracks are easily formed. Further, the FRP waterproofing has a problem that impact resistance (falling ball impact resistance) when an object is dropped is small. Further, the colored top coat uses a polymer material, and has a problem that the weather resistance and the design are not sufficient.

[0005] Therefore, the present invention is intended to prevent the FRP from being easily separated from the resin, and to provide weather resistance, abrasion resistance, abrasion resistance, load resistance, vehicle running durability and the like even under severe conditions such as an outdoor parking lot. It is an object of the present invention to provide a composite structure having excellent crack followability, falling ball impact, and the like, and also excellent design. Another object of the present invention is to provide a method for producing such a composite structure.

[0006]

Means for Solving the Problems The present inventors have conducted intensive studies to achieve the above object, and as a result, if an aggregate layer is provided so that a part thereof is buried in the FRP layer laminated on the upper surface of the base,
Even without a resin layer on top of the FRP layer, under severe conditions such as outdoor parking lots, there is no delamination, weather resistance, abrasion resistance, scratch resistance, load resistance, vehicle running durability, It has been found that a composite structure having excellent crack following properties, falling ball impact properties, and the like, and excellent design can be obtained by using a natural or artificial color aggregate. Then, the FR laminated on the upper surface of the base
When the aggregate was sprayed so that a part of the PRP layer was buried in the FRP layer in an uncured state, it was found that the composite structure was obtained, and the present invention was completed.

That is, in the present invention, a fiber-containing thermosetting resin is laminated on an upper surface of a substrate, and a first aggregate layer partially embedded in the fiber-containing thermosetting resin layer is formed. It is intended to provide a composite structure characterized by the above.
The present invention also includes a step of laminating a fiber-containing thermosetting resin on the upper surface of the base, and spraying the first aggregate onto the fiber-containing thermosetting resin layer in a state where the fiber-containing thermosetting resin is not cured. The present invention provides a method for producing a composite structure, wherein a part of the aggregate is buried, and the fiber-containing thermosetting resin is cured to form a first aggregate layer.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The substrate in the present invention is not particularly limited, and includes, for example, cement concrete, asphalt concrete, asbestos slate, aluminum plate, FRP, plastic, woody metal and the like, or a combination thereof. Among them, cement concrete and asphalt concrete are preferred. The shape of the substrate is not particularly limited, and may be a spherical surface, a curved surface, an extended surface, a flat surface, a vertical surface, a slope, or the like as long as it is the surface of the structure.

The resin used for the FRP layer in the present invention is preferably a thermosetting resin. Examples of the thermosetting resin include an unsaturated polyester resin, a vinyl ester resin, an epoxy resin, and a phenol resin, and are preferably an unsaturated polyester resin and a vinyl ester resin. The unsaturated polyester resin is produced by polycondensation of an α, β-unsaturated dibasic acid or an acid anhydride thereof, an aromatic saturated dibasic acid or an acid anhydride thereof, and glycols. Is obtained by dissolving 30 to 80 parts by weight of an unsaturated polyester produced by using an aliphatic or alicyclic saturated dibasic acid in combination with 70 to 20 parts by weight of an α, β-unsaturated monomer. No. In addition, vinyl ester resin is a product obtained by modifying the terminal of unsaturated polyester with vinyl,
And those obtained by modifying the terminal of the epoxy resin skeleton with vinyl. These may be thickeners, fillers, curing catalysts,
A curing accelerator, a low-shrinking agent and the like are added, and the addition of a curing catalyst and a curing accelerator is particularly useful.

The above-mentioned α, β-unsaturated dibasic acid or its anhydride includes maleic acid, maleic anhydride, fumaric acid, itaconic acid, citraconic acid, chlormaleic acid and esters thereof. Group-saturated dibasic acids or anhydrides thereof include phthalic acid, phthalic anhydride, isophthalic acid, terephthalic acid, nitrophthalic acid, tetrahydrophthalic anhydride, endomethylenetetrahydrophthalic anhydride, halogenated phthalic anhydride and esters thereof And the like, as aliphatic or alicyclic saturated dibasic acids, oxalic acid, malonic acid, succinic acid, adipic acid, sebacic acid,
There are azelaic acid, glutaric acid, hexahydrophthalic anhydride and esters thereof, which are used alone or in combination.

The glycols include ethylene glycol, propylene glycol, diethylene glycol, dipropylene glycol, 1,3-butanediol, 1,4-butanediol, 2-methylpropane, 1,3-diol,
Neopentyl glycol, triethylene glycol, tetraethylene glycol, 1,5-pentanediol, 1,6
-Hexanediol, bisphenol A, hydrogenated bisphenol A, ethylene glycol carbonate, 2,2-
Examples thereof include di- (4-hydroxypropoxydiphenyl) propane, which is used alone or in combination. In addition, oxides such as ethylene oxide and propylene oxide can also be used. Polycondensates such as polyethylene terephthalate can also be used as part of the glycols and the acid component.

The α, β-unsaturated monomer includes styrene, vinyltoluene, α-methylstyrene,
Vinyl compounds such as chlorostyrene, dichlorostyrene, vinyl naphthalene, ethyl vinyl ether, methyl vinyl ketone, methyl acrylate, ethyl acrylate, methyl methacrylate, acrylonitrile, methacrylonitrile, and diallyl phthalate, diallyl fumarate, diallyl succinate, triallylcia Examples thereof include a vinyl monomer or vinyl oligomer crosslinkable with an unsaturated polyester such as an allyl compound such as a nurate or a vinyl ester resin, and these are used alone or in combination. In general, styrene is used.

The thickener is chemically bonded to a hydroxyl group, a carboxyl group, an ester bond, or the like of the unsaturated polyester or the like to form a linear or partial cross-link, thereby increasing the molecular weight, and converting the unsaturated polyester resin. It has a thickening property, for example, diisocyanates such as toluene diisocyanate, metal alkoxides such as aluminum isopropoxide and titanium tetrabutoxide, and magnesium oxide, calcium oxide and beryllium oxide.
Examples thereof include oxides of valent metals and hydroxides of divalent metals such as calcium hydroxide. The amount of the thickener to be used is generally 0.2 to 5 parts by weight, preferably 0.5 to 4 parts by weight, per 100 parts by weight of the unsaturated polyester resin. If necessary, a small amount of a highly polar substance such as water can be used as a thickening aid. As the colorant, any of conventionally known organic and inorganic dyes and pigments can be used. Among them, those which are excellent in heat resistance, transparency, and do not significantly hinder the curing of unsaturated polyester or the like are preferably used. Can be

The fiber reinforcing material used in the present invention is, for example, glass fiber, organic fiber such as amide, aramid, vinylon, polyester, phenol, etc., carbon fiber, metal fiber, ceramic fiber or a combination thereof.
In consideration of workability and economy, glass fibers and organic fibers are preferable. The form of the fiber includes plain weave, satin weave, mat shape and the like, but the mat shape is preferable in view of workability, thickness maintenance and the like. In addition, glass roving is 20-100mm
It can be cut into chopped strands and used. The fiber content in the FRP is preferably from 5 to 50% by weight, more preferably from 10 to 40% by weight,
-30% by weight is particularly preferred. If it is 5 to 50% by weight, the fibers are sufficiently entangled with the aggregate, so that even when used under severe conditions, the effect of suppressing the scattering and peeling of the aggregate is great,
A composite structure having particularly excellent weather resistance, abrasion resistance, abrasion resistance, load resistance, vehicle running durability, and the like can be obtained. In the present invention, a surface mat, a nonwoven fabric, or the like may be used in combination with the glass mat in order to adjust the amount of the aggregate to sink into the FRP layer.

As the filler, calcium carbonate powder, clay, alumina powder, silica stone powder, talc, barium sulfate, silica powder, glass powder, glass beads, mica, aluminum hydroxide, cellulose thread, silica sand, river sand, cold water stone, Known materials such as marble chips and crushed stones may be mentioned, and among them, glass powder, aluminum hydroxide, barium sulfate and the like are preferable because they impart translucency upon curing.

The curing catalyst acts on an unsaturated polyester resin, a vinyl ester resin or the like, for example, an azo compound such as azoisobutyronitrile, tertiary butyl perbenzoate, tertiary peroctoacece, benzoyl peroxide, Methyl ethyl ketone peroxide, organic peroxides such as dicumyl peroxide and the like, and unsaturated polyester resin 10
It can be used usually in the range of 0.3 to 3 parts by weight with respect to 0 parts by weight.

As the curing accelerator, metal salts of organic acids, particularly cobalt salts, for example, cobalt naphthenate, cobalt actylate, cobalt acetylacetone and the like are used.
Examples of the internal release agent include stearic acid, higher fatty acids such as zinc stearate, higher fatty acid esters, and conventionally known compounds such as alkyl phosphate esters.
For example, usually 0.5 parts per 100 parts by weight of unsaturated polyester resin
It can be used in a proportion of up to 5 parts by weight.

As the low shrinkage agent, a thermoplastic resin can be used, and specific examples thereof include lower alkyl esters of acrylic acid or methacrylic acid such as methyl methacrylate, ethyl methacrylate, butyl methacrylate, methyl acrylate, ethyl acrylate, styrene, and the like. Homopolymers or copolymers of monomers such as vinyl chloride and vinyl acetate, at least one of the above vinyl monomers, lauryl methacrylate, isovinyl methacrylate, acrylamide, methacrylamide, hydroxyalkyl acrylate or methacrylate, acrylonitrile , Methacrylonitrile, acrylic acid, methacrylic acid, cetyl stearyl methacrylate at least one copolymer of monomers and the like, as well as cellulose acetate butyrate and cellulose Se Tate propionate, polyethylene, a polypropylene, and the like.

The aggregate includes a natural ore, a crushed stone obtained by crushing the ore, a natural aggregate in which a rock is weathered, collapsed, transported, and deposited, and a special aggregate excellent in brightness, hardness and the like. In the present invention, it is preferable to use natural aggregates and special aggregates.

[0020] Natural aggregate is generally referred to as artificial aggregate, and is produced in a natural state, and does not generally undergo operations such as crushing, washing, and sieving. It is. It has the advantage of being relatively inexpensive.
Natural aggregates are generally classified into the following. Notched gravel: Gravel and sand collected at the sampling site without being separated. Generally, those having a large or small particle size are appropriately mixed. Gravel: Gravel includes mountain gravel, river gravel, and sea gravel.
Mountain gravel has a soiled material that contains soil.
It is preferable to investigate and examine the amount of the 0.074-mm sieve or the PI of the 0.4-mm sieve and use it. Sand: Sand includes mountain sand, river sand, sea sand and the like. Sand may vary in particle size depending on the place where it is collected or may contain harmful soil, so it is preferable to use it after sufficient investigation. Also,
Since sea sand has more roundness than river sand, the stability of a composite structure using the same tends to be low. Regarding the salt content in the sea sand, the salt content which is not always in direct contact with the sea water is extremely low and may be used in the present invention. When storing sand, it is preferable to avoid the influence of rainwater as much as possible because it tends to contain a larger amount of water than gravel and the like, and the water contained in the sand is less likely to emanate.

The special aggregate includes a light-colored aggregate and a hard aggregate. Light aggregate: Light aggregate is used to lighten the composite structure. Light-colored aggregates include granular aluminum, hard and hard aggregates whose surfaces are coated with colored prints, and glass bodies. Aggregates such as granular aluminum and hard aggregates coated with colored prints are uncured FR
Sprayed on P and buried by compaction or the like for use. Glass body is Luxobyte, Shinobar, G-light,
Mesalite and the like. Luxovite is a white artificial aggregate obtained by firing natural flint stone. Particle size is 5
mm or less, and a good bright color effect can be obtained by using this. The main component is silica, which has features such as being not discolored, hard, resistant to freezing, and irregularly reflecting light rays. Sinopearl is a kind of opaque glass obtained by melting silica sand, lime, and dolomite, and is a pure white artificial aggregate having high wear resistance, chemical resistance, and heat resistance. It has a Mohs hardness of 7.5, and is extremely hard and rich in acute angles. An aggregate of crystalline, opaque, pure white glass particles having microscopic pores with discontinuities of about 5 to 17% in the particles and having good light reflectivity. Hard to be polished with car tires.

Hard aggregate is a general term for hard stone aggregate having excellent wear resistance and used for the surface layer of pavement, wear layer and the like. Those having a Mohs hardness of 6 to 7 are generally used. The hard aggregate preferably has high abrasion resistance. further,
It is preferable that the surface of the aggregate when worn is not as smooth as a mirror. Hard aggregate is olivine sand,
Natural aggregates such as corundum, iron spinel, emery mainly composed of magnetite, silica sand which is silica-rich quartz sand, hard sandstone and granite; produced in the refining process of certain metals or non-metals such as nickel slag There are artificial aggregates that have been processed.

In the present invention, the above-mentioned aggregates can be appropriately selected and used as aggregates for forming the first aggregate layer and the second aggregate layer according to the use. In addition,
The color aggregate is preferably used in the present invention because it is excellent not only in design (appearance) but also in weather resistance and durability. From the design side,
A colorless aggregate obtained by baking a pigment or the like may be used.

The average particle size of the aggregate is 0.07 to 3.0 mm.
(Equivalent to silica sand Nos. 2 to 6),
It is particularly preferred that it is 3 to 1.5 mm (corresponding to silica sand No. 2 to 3). If it is 0.07 to 3.0 mm, even if used under severe conditions, there is little scattering and peeling of aggregates, and weather resistance, abrasion resistance, scratch resistance, load resistance, vehicle running durability, etc. In particular, a composite structure excellent in quality is obtained. Further, the weight ratio of FRP to aggregate is preferably 1 / 0.1 to 1/3, particularly preferably 1 / 0.5 to 1/2. If it is 1 / 0.1 to 1/3, the composite structure is particularly excellent in weather resistance, abrasion resistance, abrasion resistance, load resistance, vehicle running durability, and the like even under severe conditions such as an outdoor parking lot. The body is obtained. In the range of the weight ratio, a range with a large ratio substantially corresponds to a case where only the first aggregate layer is formed, and a range with a small ratio substantially corresponds to a case where the first and second aggregate layers are formed.

The composite structure of the present invention is characterized in that F
RP is laminated, and a first aggregate layer partially buried in the FRP layer is formed. When laminating the FRP on the upper surface of the base, if necessary,
Priming can be performed. The primer is a known one, for example, a one-component moisture-curable urethane primer,
Bisphenol A type epoxy / polyamine type primer, unsaturated polyester type primer and the like can be used. The lamination of FRP is performed by applying the layer of the thermosetting resin on a substrate and placing the fiber reinforcement on the substrate, or by impregnating the thermosetting resin with the fiber reinforcement on the substrate. It can be carried out. The amount of FRP applied is not particularly limited, but is preferably 1.0 to 5.0 kg / m ² ,
1.3 to 3.5 kg / m ² (# 300 1 ply to # 4
(Equivalent to 502 ply).

Next, a first aggregate layer is formed so that a part thereof is buried in the FRP layer. Such a structure can be obtained by spraying the first aggregate in a state where the FRP is not cured, and thereafter curing the FRP layer. Since the aggregate in the first aggregate layer is scattered in an uncured state, the fibers of the FRP are sufficiently entangled, and then the FRP is cured, so that the fibers and the resin in the FRP are fixed by the resin. This imparts rigidity to the composite structure and reduces the scattering and peeling of aggregates even when used under severe conditions, weather resistance, abrasion resistance, scratch resistance, load resistance and vehicle running durability. In particular, a composite structure having excellent properties is obtained. The spray amount of the first aggregate is
0.1 to 3.0 kg / m ² is preferable, and 1.0 to 2.0 kg / m ² is preferable.
kg / m ² is particularly preferred. The proportion of the aggregate to be buried in the FRP is determined by appropriately selecting the type and amount of the aggregate, the viscosity of the FRP when spraying the aggregate, the temperature, etc., in consideration of the environmental conditions in which the composite structure is used. Can be adjusted.

After the FRP layer is cured, a top coat layer is applied on the first aggregate layer to further improve weather resistance, abrasion resistance, scratch resistance, load resistance, vehicle running durability and the like. The resulting composite structure is obtained. It is preferable to use a resin having excellent weather resistance for the top coat layer.

In the composite structure of the present invention, it is preferable that a second aggregate layer bonded by a thermosetting resin is further formed between the aggregates of the first aggregate layer and on the aggregate. . As a result, a composite structure having more excellent weather resistance, abrasion resistance, abrasion resistance, load resistance, vehicle running durability, and the like can be obtained even under severer conditions. That is, weather resistance, abrasion resistance, scratch resistance, load resistance and vehicle running durability, etc. can be sufficiently improved only by forming the first aggregate layer,
Further, by forming the second aggregate layer, the thickness of the protective layer can be adjusted, and even under severe conditions such as running with a chain tire in a cold region, excellent weather resistance and abrasion resistance can be obtained. It can exhibit abrasion resistance, load-bearing performance and vehicle running durability. Such a composite structure is
After forming the first aggregate layer, it is further coated with a thermosetting resin, and then the second aggregate is sprayed while the thermosetting resin is in an uncured state, and the thermosetting resin is cured. Can be obtained. Here, as the thermosetting resin used for coating, those described above can be used. As the second aggregate, those described above can be used. The composite structure provided with only the first aggregate layer is effectively used in, for example, a covered parking lot, whereas the composite structure provided with the second aggregate layer is also used in an outdoor parking lot. And can be effectively used under more severe conditions than a composite structure having only the first aggregate layer. The application amount of the second aggregate is 0.1 to 3.0 kg / m ^2.
Is preferable, and 1.0 to 2.0 kg / m ² is particularly preferable.

In buildings such as concrete structures such as outdoor parking lots, low-speed and high-speed expansion and contraction occur repeatedly due to drying shrinkage, land subsidence, and earthquakes. Occurs. And since such cracks cause water leakage, it is necessary to waterproof these buildings. Generally, when performing such waterproofing construction, as the applied waterproofing material,
Even if low-speed and high-speed expansion and contraction movements and cracks occur on the building ground, the formed waterproof layer itself has excellent elasticity, adhesion, and durability, so that it does not easily crack or peel. Is required. From this point, there is a problem that the FRP structure does not always have sufficient crack followability due to its small elongation. Therefore, the composite structure of the present invention has a JI between the substrate and the FRP layer.
A polymer composition layer having a tensile elongation of 30% or more as defined in SK 6251, wherein the polymer composition layer is either a coating type resin composition layer or a synthetic polymer sheet. Preferably, it is formed.

Examples of the polymer composition layer having a tensile elongation of 30% or more specified in JIS K 6251 include a coating type resin composition layer and a synthetic polymer sheet layer. In the former case, A solid substrate such as concrete or metal may be subjected to a base treatment, a primer treatment, or the like as necessary. The primer used between the substrate and the coating-type resin composition layer is a generally known primer such as a one-part moisture-curable urethane primer, a bisphenol A type epoxy / polyamine type primer, an unsaturated polyester type primer and the like. it can.

When the material of the polymer composition layer having a tensile elongation of 30% or more is a sheet, an adhesive is used for adhesion to the substrate. This adhesive is roughly classified into an organic solvent type and a non-organic solvent type. The organic solvent system is obtained by dissolving a synthetic rubber or synthetic resin as a main component in a solvent together with an auxiliary agent or the like. The non-organic solvent system includes an emulsion type and a two-part reaction type in which a main agent and a curing agent are mixed and used, and none of them contains an organic solvent. This adhesive is used not only for the substrate and the synthetic polymer sheet, but also as an adhesive for the synthetic polymer sheet when two or more synthetic polymer sheets are used.

The polymer composition layer having a tensile elongation of 30% or more according to JIS K 6251 is specifically as follows. Examples of the coating type resin composition include JIS A 6909 multi-layer finish coating material and JIS A 6021 roof waterproof coating material. JIS A 6
In 909, polymer cement based multi-layer finish coating material, synthetic resin Em
(Em indicates an emulsion, the same applies hereinafter) -based multi-layer finish coating material, reaction-curable synthetic resin emulsion-type multi-layer finish coating material,
A main material layer such as a synthetic resin solution type multi-layer finish coating material corresponds thereto.

The polymer cement type multi-layer coating material of JIS A 6909 is a mixture of cement and a polymer dispersion for admixture as a binder. The polymer dispersion is an acrylic synthetic resin or a vinyl acetate-based Em synthetic resin specified in JIS A 6023. In addition, the synthetic resin Em-based multi-layer coating material is an acrylic resin, a vinyl acetate-based synthetic resin, or the like. The above-mentioned reaction-curable synthetic resin Em is a reaction-curable synthetic resin Em such as an epoxy resin. The synthetic resin solution-based multi-layer finish coating material is an acrylic resin, a vinyl-based synthetic resin dissolved in an organic solvent such as xylene or toluene, and an epoxy-based or urethane-based reaction-curable synthetic resin. It is dissolved in an organic solvent such as xylene or toluene.

JIS A 6021 (coating material for roof waterproofing) includes urethane rubber type 1 and 2 types, acrylic rubber type, chloroprene rubber type, acrylic resin type, rubber asphalt type and the like. Urethane rubber type 1 and 2 are two-component urethane rubber waterproofing consisting of a main ingredient mainly composed of a compound having an NCO group and a curing agent mainly composed of a crosslinking agent, a filler and the like. It is classified into Class 1 and Class 2 by its quality.

The acrylic rubber based on JIS A 6021 refers to an acrylic rubber Em obtained by blending a filler or the like with a non-vulcanized acrylic rubber mainly composed of an alkyl acrylate.
It is a system composition. The acrylic resin-based composition is a composition mainly composed of an acrylate ester and a methacrylate ester. Rubber asphalt type means asphalt and styrene
It is a rubber asphalt Em composition mainly composed of a rubber material such as butadiene or chloroprene rubber. The chloroprene rubber-based is a chloroprene rubber solution-based waterproofing agent containing chloroprene as a main raw material and blending a filler and the like.
The rubber asphalt-based is a rubber asphalt emulsion-based waterproofing agent containing asphalt and rubber as main components.

The coating film type resin composition used in the present invention is preferably used in consideration of crack tracing properties of the carcass, etc., in accordance with JIS A 6021 products and JIS A 6909 stretch type synthetic resin Em. And the like. These various coating-type resin compositions include, in addition to the resin, aggregates, viscosity stabilizers, nonionic surfactants, antifoaming agents, antifreezing agents, dispersants, wetting agents, preservatives, pH adjusters, if necessary. Part or all of a thickener, a film-forming aid, various fillers, a pigment, cement, a fibrous material and the like may be blended. When a powder such as a filler or cement is mixed, the tensile elongation decreases. When the elongation rate is less than 30%, the crack followability becomes extremely poor. The preferred tensile elongation is 50% or more, more preferably 100% or more.

The polymer composition layer composed of the synthetic polymer sheet is as follows. That is, JI
It is a synthetic polymer roofing specified in SA6008, a synthetic polymer roofing obtained by laminating a base cloth or the like.
These roofing materials include vulcanized rubber-based roofing such as ethylene propylene rubber and butyl rubber, non-vulcanized rubber-based roofing such as butyl rubber and ethylene propylene rubber, and vinyl chloride resin-based roofing such as vinyl chloride and vinyl chloride copolymer. Examples include ethylene vinyl acetate copolymer resin roofing and modified asphalt.
Since the synthetic polymer sheet needs to relieve stress, non-vulcanized rubber-based roofing and modified asphalt sheets are often used. Practically, a composite system of FRP, a urethane-based material and a sheet material is generally used. As a method of fixing the sheet-like body to the frame, for example, a method of fixing with an adhesive, a method of mechanically fixing with a fixing metal, and the like are exemplified. In the former case, it is preferable that the sheet is provided with irregularities for deaeration on the side where the adhesive is applied.

The polyurethane resin layer is preferably bonded to the FRP layer with an adhesive layer. The adhesive is
It is preferable that it can be applied in a liquid state. As the type, there are urethane type, epoxy type, vinyl ester type, unsaturated polyester type, acrylic type and the like. In consideration of the on-site construction, a urethane-based adhesive having an isocyanate group that reacts with water is preferable. The urethane-based adhesive having an isocyanate group is a moisture-curable adhesive composed of a urethane prepolymer having an isocyanate (NCO) group at a terminal obtained by reacting a polyisocyanate and a polyol.

As the above isocyanate, any organic polyisocyanate used for producing a moisture-curable urethane paint can be used. For example, 2,4-tolylene diisocyanate, 2,6-tolylene diisocyanate, 2,4 / 2,6
= 65/35 (weight ratio) tolylene diisocyanate, 2,4 / 2,6
= 80/20 (weight ratio) tolylene diisocyanate, 4,4'-
Diphenylmethane diisocyanate, hexamethylene diisocyanate, phenylene diisocyanate, 1,5-
Naphthalene diisocyanate, meta-xylylene diisocyanate, hydrogenated tolylene diisocyanate, hydrogenated 4,
4'-diphenylmethane diisocyanate, crude tolylene diisocyanate, polymethylene polyphenyl isocyanate and the like. And these can be used alone or as a mixture thereof.

As the polyol, any of the polyols conventionally used in the production of polyurethane can be used. For example, ethylene glycol, diethylene glycol, propylene glycol, dipropylene glycol, glycerin, trimethylolethane, trimethylolpropane, castor Oil, diglycerin, sorbitol,
Active hydrogen-containing compounds such as pentaerythritol and dipentaerythritol, and the above-described active hydrogen-containing compounds and ethylene oxide, propylene oxide, butylene oxide, styrene oxide, obtained by addition polymerization of a single or mixture of alkylene oxides such as tetrahydrofuran. , Having an average molecular weight of not more than 3,000 having two or more terminal hydroxyl groups and having an average number of functional groups of not less than 2, preferably from 200 to 1,0
An active hydrogen-containing polymer having an average functionality of 2 to 2.5 is used. Other polyester polyols, oil-modified polyester polyols, poly ε-caprolactone polyols, acrylic polyols, polyimines, polyamides, urea resins, melamine resins, etc., have an average molecular weight of 3,000 or less and an average functional number of 1.5 or more, preferably an average molecular weight of 200 to 1,000 and an average functional number of 2 Active hydrogen-containing polymers of ~ 2.5 can also be used in combination.

Both the isocyanate and polyol components are converted into urethane prepolymers through a well-known and conventional urethane-forming reaction in such a ratio that the molecular terminals become isocyanates. Next, the urethane prepolymer is diluted with a dilutable solvent to prepare a resin solution having a resin content of 10 to 70% by weight, preferably 15 to 50% by weight. Typical diluting solvents are those which do not react with isocyanates such as toluene, xylene, ethyl acetate, methyl ethyl ketone or cellosolve acetate, and these are used alone or in combination to form a polyol from the beginning of the urethanization reaction. Component and organic isocyanate component.

That is, in this urethanization reaction, the above-mentioned polyol component, organic isocyanate component and solvent are added, and the urethanization reaction is carried out in the presence of a conventional urethanization catalyst.
In a reaction vessel at 〜80 ° C., the reaction is carried out for 2 to 5 hours while stirring according to a conventional method. Typical examples of the urethanization catalyst include dibutyltin laurate,
Metal catalysts such as tin octylate or lead octylate. The content of organic isocyanate groups in the urethane prepolymer obtained by such an operation is preferably 13 to 25 percent by weight, particularly 13 to 22 percent by weight of the resin solids,
The viscosity of the obtained resin solution is preferably in the range of about 20 to 500 cps for easy coating.

The prepolymer having a terminal isocyanate group is used as an adhesive by blending various additives such as cements, extender pigments, coloring agents, thickeners, leveling agents, defoamers and the like, if necessary. . After making the adhesive, painting by hand using a brush, roller brush, etc. is usually performed, but spray spray painting by a machine is also possible, and the coating film formed in this way is promptly exposed to moisture in the air Hardens to The coating amount of the polyurethane resin layer is 0.5 to 3 kg /
m ² is preferred, and 1.0 to 2.5 kg / m ² is particularly preferred.

In order to improve the running durability of the vehicle, if a waterproof coating is adhered to the entire surface of the base and a high hardness resin coating is combined with the surface, the flexibility of the coating system becomes extremely poor. Therefore, not only is the ability to follow cracks and joint movements of the substrate insufficient, but also the moisture contained in the substrate becomes water vapor due to an increase in temperature, and the pressure may cause peeling at a weakly adhered portion of the waterproof layer. . That is, in the FRP / urethane method, when the underlayer moisture is high,
Since the lid comes into close contact from above, there is no escape for water vapor, which causes swelling especially in summer. this is,
This is due to the fact that there are many synthetic slabs (iron plate + concrete) using deck plates and insufficient curing of concrete. For this reason, in the composite structure of the present invention, it is preferable that a deaerated sheet layer is formed between the polyurethane resin layer and the substrate.

Examples of the deaerated sheet layer include the following perforated air cushioning sheets. The perforated ventilation buffer sheet is
A plastic foam, a synthetic fiber non-woven fabric, a rubber sheet, a polyurethane sheet and the like are possible, and a long filament non-woven fabric of polyester filament is particularly preferable. Also, FR
It is also preferable to apply a thin layer of rubber latex or the like to the upper surface side of the perforated air-permeable buffer sheet in order to prevent excessive impregnation of the waterproof material with P or other materials.

It is preferable that the perforated air cushioning sheet is laminated on the substrate via an adhesive or a waterproof material. In some cases, it is preferable to further laminate a waterproof material thereon.
Thereby, the base material and the waterproof material are partially adhered to each other through the holes, and the movement of the sheet can be reliably suppressed.

The thickness of the sheet is substantially proportional to the basis weight of the long fiber. If the thickness is large, the air permeability is improved. If the thickness is larger than necessary, the cushioning property of the sheet portion of the coating system is increased.
The load at the time of running the vehicle is likely to concentrate only on the portion of the hole where the base and the waterproof material are in close contact. When the thickness of the sheet is more than 3 mm, the above-mentioned problem occurs, and it becomes easy to wear the portion of the hole like a spot, and in some cases, the FRP layer may be cracked. On the other hand, when the thickness is less than 0.4 mm, the air permeability is poor, the moisture in the base material is hardly removed, and the waterproof coating film may swell. In addition, the ability to follow the movement of the base is also reduced. From the above, the thickness of the ventilation buffer sheet is preferably 0.6 to 3 mm, and particularly preferably 1 to 2.5 mm.

In consideration of the balance between load resistance and adhesion durability due to running of the vehicle and followability with respect to the movement of the substrate, the air-permeable cushioning sheet having the above-described structure is highly desirable. % Is preferable.

The adhesive or waterproof material interposed between the substrate and the perforated air-permeable cushioning sheet, and the waterproofing material laminated on the perforated air-permeable cushioning sheet, if necessary, include urethane rubber, acrylic rubber, rubber asphalt and the like. It is particularly preferable to use a known polyurethane coating waterproofing system, and more preferably to use a urethane coating waterproofing material having a performance that meets the JIS A 6021 urethane rubber type 1 standard. is there. In addition, when the urethane waterproofing material is applied, it is preferable that the applied film thickness is usually 2 to 5 mm. Such a deaerated sheet layer can be provided according to a conventional method.

[0050]

EXAMPLES Next, the present invention will be described in more detail with reference to examples, but the present invention is not limited to the following examples.

Reference Example 1 Production of FRP Layer Adhesive Having NCO Group "Hipox DP-2000" having a molecular weight of 2,000 and an OH value of 56 (a bifunctional polyether polyol manufactured by Dainippon Ink and Chemicals, Inc.)
1000 g, 1,3-butylene glycol 60 g, trimethylolpropane 30 g, polymethylene polyphenylisocyanate (using Crude MDI manufactured by Nippon Polyurethane Co., Ltd.) 271
Add toluene so that 3g and resin content become 60%, and add 50g
The mixture was stirred and mixed at ℃ to obtain a resin solution comprising a urethane prepolymer and a diluent solvent (toluene) having an NCO% of 9.6 and a viscosity (25 ° C., the same applies hereinafter) of 260 cps. Xylene as a diluting solvent was added to the resin solution obtained above to make the resin content 40%, and an FRP layer adhesive of a moisture-curable polyurethane resin solution having a viscosity of 27 cps was obtained.

Example 1 A hole having a diameter of 10 mm was formed on a base (concrete) by 50 m.
800 pieces / m in a grid of mx 25mm^TwoThickness 1.
2mm polyester filament long fiber non-woven fabric
The air buffer sheet was attached with a urethane-based two-liquid adhesive.
Next, polyurethane resin (Poly roof PU-2, twin
2.5 kg / m ^TwoApply and that
0.2 kg / m of the adhesive obtained in Reference Example 1 above^TwoApplication
And cured. Next, the unsaturated polyester resin (Po
1.2k for Reroof S-2 (manufactured by Sowa Chemical Industry Co., Ltd.)
g / m^TwoAnd apply glass fiber (300 g / m^Two,
Nitto Boseki Co., Ltd.) (FRP layer). Unsaturated port
The ratio of ester resin to glass fiber was 80:20.
Was. With the FRP layer in an uncured state, No. 3 silica sand was
kg / m^TwoSprayed. After curing FRP layer, for transparent filling
Resin (Polyroof S-2 for pool, Sowa Chemical Industry
0.8 kg / m^TwoApply and top coat layer
Was formed to obtain a composite structure 1.

Example 2 In Example 1, a particle size of 0.3 to 0.3 was used instead of No. 3 silica sand.
A composite structure 2 was obtained in the same manner as in Example 1 except that a 1.2 mm seraart color aggregate (manufactured by Sowa Chemical Industry Co., Ltd.) was used.

Example 3 In Example 1, after curing the FRP layer, the polyroof S-
After applying No. 2 at 0.5 kg / m ² , No. 3 silica sand was sprayed at 1.0 kg / m ² while the resin was not cured. After curing the resin, a transparent sealing resin (Polyroof S)
-2 for pool, manufactured by Sowa Chemical Industry Co., Ltd.) 0.3kg /
m ² to form a top coat layer and form a composite structure 3
I got

Comparative Example 1 The composition of Reference Example 1 was applied as a primer to the substrate of Example 1 at a rate of 0.2 kg / m ^2, and a polyurethane resin (Polyof PU-2, manufactured by Syowa Chemical Industry Co., Ltd.) was applied. 1.5 kg / m ^{2 was} applied using a gold iron. After curing, the adhesive synthesized in Reference Example 1 was applied on the polyurethane resin layer at a solid content of 150 g / m
^{2 were} applied. After the resin of the adhesive layer is cured, the unsaturated polyester resin (Polyroof S-2, Sowa Chemical Industry Co., Ltd.)
1.6 kg / m ² , and a glass chop mat (450 g / m ² , manufactured by Nitto Boseki Co., Ltd.) was laid thereon and cured. Vinyl ester resin (poly roof)
0.4 kg / m ² (S-3N, manufactured by Sowa Chemical Industry Co., Ltd.)
Then, 1.0 kg / m ^{2 of} No. 4 silica sand was sprayed. Next, the above polyester resin was applied at 0.4 kg / m ² as a seal from above to obtain a composite structure 4.

Comparative Example 2 The composition of Reference Example 1 was applied as a primer on a substrate of Example 1 with a roller of 0.2 kg / m ² , and a urethane waterproofing material for a flat field (manufactured by Hodogaya Construction Materials Co., Ltd.) 5kg / m
² was applied with a gold iron. Subsequently, 1.5 kg / m ² of HC Park M (manufactured by Hodogaya Building Materials Co., Ltd.) was applied with a gold iron. Further, the HC grip (produced by Hodogaya Construction Materials Co., Ltd.) / 5 silica sand / HC dripping agent / xylene having a ratio of 100: 50: 0.05: 1.0 was replaced with 0.6.
It was applied with a roller at a rate of kg / m ^2.

Test Example 1 For each of the above composite structures 1 to 5, (1) kept at 50 ° C. and 95% humidity for 4 weeks, (2) kept at 50 ° C. and 95% humidity for 8 weeks, (3) 70 ° C. After holding at 95% humidity for 2 weeks, a stationary test was performed by the following method. As a control, a stationary test was immediately performed without holding after the production ((4)).

Manufacturer: Nikken Corporation Model: NKA-187 Test conditions: Wheel load: 70 kg Wheel: Hardness JIS-A83 Urethane rubber Outer diameter φ100 mm Rotation: 360 ° continuous rotation Temperature: 23 ° C.

The wheels are rotated 50 times, 100 times, 150 times,
Tables 1 to 4 show the degrees of deterioration after being rotated 00 times, 250 times, 300 times, and 350 times. The degree of deterioration was visually evaluated according to the following criteria. 7: No wear is observed. 6: Wear is extremely small. 5: Less wear. 4: Slight wear. 3: There is much wear. 2: Extremely abrasion, residual aggregate amount is 50% or more. 1: Very abrasion, residual aggregate content less than 50%.

[0060]

[Table 1]

[0061]

[Table 2]

[0062]

[Table 3]

[0063]

[Table 4]

[0064]

[Table 5]

The composite structures 1 to 4 showed less abrasion than the composite structure 5 under any holding conditions. this house,
Particularly, the composite structures 1 to 3 were excellent.

Test Example 2 Samples maintained under the same conditions as in Test Example 1 ((1),
In addition to (3) and (4)), those irradiated with UV using an ice bar UV tester for 200 hours ((5))
A taper abrasion test was performed based on JIS K 7204 “Method for testing abrasion of plastic with abrasion wheel”. The test conditions are an illuminance of 90 mW / cm ² , a temperature of 63 ° C., and a humidity of 70%. Table 6 shows the results.

[0067]

[Table 6]

It was confirmed that the composite structures 1 to 3 had a smaller wear amount than the composite structures 4 and 5.

Examples 4 and 5 The adhesive obtained in Reference Example 1 was applied to a substrate (concrete) at 0.2 kg / m ² . Next, an unsaturated polyester resin (Polyof S-2, Sowawa Chemical Industry Co., Ltd.)
No. 3 silica sand (Example 4, particle size of 0.3 to 4 kg) was applied by applying an FRP layer in which 1.8 kg / m ² was impregnated into 450 g / m ² glass mat and the FRP layer was in an uncured state. 1.2mm)
Or color aggregate (Example 5, particle size 0.3 to 1.2 mm)
Was sprayed at 1.0 kg / m ² . After curing, sealing resin (Polyroof S-2 for pool, Sowa Chemical Industry Co., Ltd.)
Was applied at 0.3 kg / m ² to obtain a composite structure 6 (Example 4) and a composite structure 7 (Example 5).

Test Example 3 With respect to the composite structures 6 and 7 obtained above, Test Example 1
The test was performed under the same conditions as described above. The results are shown in Tables 7 and 8.

[0071]

[Table 7]

[0072]

[Table 8]

It was confirmed that the composite structures 6 and 7 had an extremely small wear amount and had excellent characteristics. The composite structure 7 was also particularly excellent in design.

Test Example 4 With respect to the composite structures 6 and 7 obtained above, Test Example 2
The test was performed under the same conditions as described above. Table 9 shows the results.

[0075]

[Table 9]

It was confirmed that the composite structures 6 and 7 had an extremely small amount of wear.

Example 6 A composite structure 8 was manufactured according to the following procedure. After the concrete was treated, the concrete was cleaned and cleaned. A 2: 1 ratio of Polyroof S-1 and Portland cement on the concrete and a polyroof cement settling inhibitor US
(Manufactured by twin sum Chemical Industry Co.) were mixed and stirred at a stirrer together 50 g / present, was uniformly applied by a roller brush at a rate of 0.3 kg / m ^2. After 2 hours, the main component of Polyroof PU-2 and the curing agent were mixed and stirred at a ratio of 1: 2.
It was applied at a rate of 5 kg / m ² (urethane waterproofing).
After curing, Polyroof S-1R and Portland cement in a ratio of 2: 1 and polyroof cement anti-settling agent US,
50 g / piece were mixed and stirred with a stirrer, 0.2 k
g / m ² was uniformly applied with a roller brush. 2 hours later, poly roof mat # 3 that has been allocated and cut in advance
I laid down 00 without wrinkles. The overlapping width of the poly roof mat was 50 mm or more. Then, Poly Roof S-2 was uniformly applied at a rate of 1.0 kg / m ² ,
The generated foam was completely defoamed with a spiral roller.
Immediately after applying Polyroof S-2, apply color sand 1.0
It was sprayed uniformly at a rate of kg / m ² . Poly roof S-
2 After hardening, remove excess aggregate
-2, a mixture obtained by mixing and stirring a polyroof curing agent was added to 0.5
The composition was uniformly applied with a roller brush at a rate of kg / m ² .
Immediately thereafter, color sand was uniformly applied at a rate of 1.0 kg / m ² . Finally, on top of that, poly roof S-
After adding 10% of a special diluent for 2 pools and mixing and stirring, mix and stir a polyroof hardener and add 0.3 kg
/ M ² was uniformly applied with a roller brush to obtain a composite structure 8. This is because FRP and resin hardly peel off, even under severe conditions such as an outdoor parking lot, delamination hardly occurs, weather resistance, abrasion resistance, scratch resistance, load resistance, vehicle running durability and It was excellent in crack followability, falling ball impact, and the like, and also excellent in design.

Example 7 and Comparative Example 3 A composite structure 9 (Example 7) was manufactured according to the following procedure. After the concrete was treated, the concrete was cleaned and cleaned. On the concrete, 0.2 of Polyroof S-1 was added.
It was applied uniformly at a rate of kg / m ² . On top of that, a polyroof S-2 pool was applied at a rate of 0.4 kg / m ² . Then, Polyroof S-2 was added at 1.0 kg / m ^2.
In a uniform ratio. Next, 0.48 kg / m ² of polyroof mat # 450, which was previously allocated and cut.
I laid it so that it did not wrinkle. Next, in an uncured state, No. 4 silica sand was sprayed at 1.5 kg / m ² . further,
The Porirufu S-2 was uniformly applied at a rate of 1.0 kg / m ^2, after the medium coating the Porirufu S-3N at a rate of 0.4 kg / m ^2, and surface conditioning drop the fluff. Finally, Polyroof S-4 was uniformly applied at a rate of 0.4 kg / m ² to obtain a composite structure 9. The composite structure 10 (Comparative Example 3) was prepared in the same manner as the composite structure 9, except that No. 4 silica sand was not sprayed.

Test Example 5 The process interval time until peeling occurred between the polyroof S-2 layer and the polyroof S-3N layer was measured. In a test performed in July, the composite structure 9 took more than two weeks, while the composite structure 10 took less than two days. Also, 10
In a test performed on the moon, composite structure 9 required more than one month, whereas composite structure 10 took less than 5 days.

Test Example 6 For composite structures 9 and 10, JASS 8 in 2000
(Waterproofing work) A falling ball test was performed based on a membrane waterproof layer / impact resistance test (see page 421). As a result, the composite structure 9 passed the 1.5-meter dropped ball, whereas the composite structure 10 passed the 0.5-meter dropped ball, but failed the 1.0 dropped ball.

[0081]

According to the composite structure of the present invention, the separation between the FRP and the resin hardly occurs, and even under severe conditions such as an outdoor parking lot.
It is excellent in weather resistance, abrasion resistance, abrasion resistance, load resistance, vehicle running durability, crack followability, falling ball impact, and the like, and is also excellent in design. Such an effect is particularly remarkable when the second aggregate layer bonded by the thermosetting resin is formed between the aggregates of the first aggregate layer and on the aggregate.
A polyurethane resin layer is formed between the substrate and the fiber-containing thermosetting resin layer; a degassing sheet layer is formed between the substrate and the polyurethane resin layer; a polyurethane resin layer In the case where an adhesive layer is formed between the fiber and the thermosetting resin layer containing the fiber, the crack followability of the composite structure can be improved.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shuya Tsuji 1-2-26 Ashiharadori, Hyogo-ku, Kobe-shi, Hyogo Inside Sowa Chemical Industry Co., Ltd. (72) Inventor Kokichi Wakasugi 1 Ashihara-dori, Hyogo-ku, Hyogo-ken -2-26 Sowa Chemical Industry Co., Ltd. (72) Inventor Seiji Hayashi 1-2-26 Sowa Chemical Industry Co., Ltd.Ashiharadori, Hyogo-ku, Kobe City, Hyogo Prefecture (72) Inventor Tetsuhiro Nawata Hyogo, Kobe City, Hyogo Prefecture 1-226 Awara Ward FWA term (reference) 4F100 AA21 AA21H AE00 AG00 AK01B AK01C AK01D AK01E AK41 AK44 AK51 AK51G AL05E AR00E AT00A BA03 BA04 BA05 BA07 BA10A BA10C BA44B CA24CB01B DG01C DG04 DG15 DH02B EC142 EC18D EC182 EG002 EH462 EH762 EJ082 GB90 JB13B JD20E JK06 JK08E JK09 JK16 JL00 JL09

Claims (11)

[Claims] 1. A fiber-containing thermosetting resin is laminated on an upper surface of a base, and a first aggregate layer partially embedded in the fiber-containing thermosetting resin layer is formed. Composite structure. 2. The composite structure according to claim 1, wherein the aggregate in the first aggregate layer is fixed by the resin and fibers in the fiber-containing thermosetting resin. 3. The method according to claim 1, wherein a second aggregate layer bonded by a thermosetting resin is formed between the aggregates of the first aggregate layer and on the aggregate. A composite structure as described. 4. A polymer composition layer having a tensile elongation of 30% or more specified in JIS K 6251 between a substrate and a fiber-containing thermosetting resin layer, wherein the polymer composition layer is coated. The composite structure according to any one of claims 1 to 3, wherein a layer that is either a film-type resin composition layer or a synthetic polymer sheet is formed. 5. A base and a polymer composition layer having a tensile elongation of 30% or more specified in JIS K 6251, wherein the polymer composition layer is a coating type resin composition layer or a synthetic polymer sheet. The composite structure according to claim 4, wherein a deaerated sheet layer is formed between the layer and any one of the layers. 6. The tensile elongation specified in JIS K 6251 is 30%.
The above polymer composition layer, wherein the polymer composition layer is either a coating type resin composition layer or a synthetic polymer sheet, and a fiber-containing thermosetting resin layer, The composite structure according to claim 4, wherein an adhesive layer is formed therebetween. 7. A fiber-containing thermosetting resin is laminated on an upper surface of a substrate, and a first aggregate is sprayed on the fiber-containing thermosetting resin layer in a state where the fiber-containing thermosetting resin is not cured. And burying a part of the aggregate and curing the fiber-containing thermosetting resin to form a first aggregate layer. 8. After forming the first aggregate layer, the first aggregate layer is further covered with a thermosetting resin, and then the second aggregate is sprayed while the thermosetting resin is in an uncured state. The method for producing a composite structure according to claim 7, wherein the reactive resin is cured. 9. A polymer composition layer having a tensile elongation of 30% or more specified in JIS K 6251 between a substrate and a fiber-containing thermosetting resin layer, wherein the polymer composition layer is coated. The method for producing a composite structure according to claim 7 or 8, wherein a layer that is either a film-type resin composition layer or a synthetic polymer sheet is formed. 10. Tensile elongation specified in JIS K 6251 is 30.
% Or more of a polymer composition layer, wherein the polymer composition layer is either a coating type resin composition layer or a synthetic polymer sheet, and then an adhesive is applied to an upper surface of the layer. The method for producing a composite structure according to claim 9, wherein the thermosetting resin is laminated. 11. After forming a degassed sheet layer on a substrate, a polymer composition layer having a tensile elongation of 30% or more specified in JIS K 6251, wherein the polymer composition layer is coated. The method for producing a composite structure according to claim 9 or 10, wherein a layer that is either a film-type resin composition layer or a synthetic polymer sheet is formed.