JP2002061343A - Composite covering structure body and its construction method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a new composite covering structure body having excellent performance in waterproofness, silencing property and slip preventiveness, and to provide its construction method. SOLUTION: This composite covering structure body comprises (A) a top coat layer, (B) a waterproof layer formed by hardening a fiber reinforced thermosetting resin composition containing thermosetting resin and a fiber reinforcing material, (C) a primer layer and (D) a base body. The top cost layer (A) contains elastic polymeric grains.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite covering structure and a method for constructing the same.

[0002]

2. Description of the Related Art In recent years, an FRP waterproofing method using an FRP waterproofing layer has been widely adopted as a waterproofing construction for a building space such as a rooftop or a road. According to the FRP waterproofing method, it is possible to perform waterproofing work having higher strength and surface hardness, and excellent durability and dimensional stability as compared with other waterproofing methods.

[0003]

On the other hand, floor impact noise has become a problem as part of the improvement of livability in living spaces such as dwellings. In order to solve this problem, sufficient measures have not been taken in waterproofing by the conventional FRP waterproofing method. In particular, measures against floor impact noise caused by walking in open corridors, stairs, and verandas outdoors have been strongly desired. In addition, flat finish FR
In the P waterproofing method, the floor surface is slippery, especially when water is interposed, and there is a risk of falling over when walking.

[0004] Therefore, an object of the present invention is to provide a novel composite covering structure having excellent performances in waterproofness, noise reduction and anti-slip properties, and a method for constructing the same.

[0005]

Means for Solving the Problems The present inventor has made intensive studies to solve the above-mentioned problems. As a result, it has been found that the above problem can be solved by providing a specific top coat layer on the FRP waterproof layer. That is, the composite coating structure according to the present invention is a waterproof structure obtained by curing a (A) top coat layer, (B) a fiber-reinforced thermosetting resin composition containing a thermosetting resin and a fiber reinforcing material from above. layer,
In the composite coating structure having the configuration of (C) a primer layer and (D) a substrate, the top coat layer (A) contains elastic polymer particles.

Further, the method for applying a composite coated structure according to the present invention is directed to a fiber-reinforced thermosetting resin composition containing a primer layer (C), a thermosetting resin and a fiber reinforcing material on a substrate (D). A waterproof layer (B) obtained by curing the polymer is sequentially provided, and then a top coat layer (A) containing elastic polymer particles is provided on the waterproof layer (B).

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The composite coated structure according to the present invention comprises:
From the top, (A) a top coat layer, (B) a waterproof layer obtained by curing a fiber-reinforced thermosetting resin composition containing a thermosetting resin and a fiber reinforcing material, (C) a primer layer, and (D) a substrate. The top coat layer (A) is characterized in that the top coat layer (A) contains elastic polymer particles.

Hereinafter, the present invention will be described in detail, including details of the above-mentioned components. The top coat layer (A) in the present invention is not particularly limited as long as it is a layer containing elastic polymer particles, and is a layer obtained by curing a curable resin composition containing elastic polymer particles. Is preferred. The curable resin that can be used in the curable resin composition is not particularly limited, but includes, for example, an acrylic urethane resin, an epoxy resin, a urethane resin, an unsaturated polyester resin, a vinyl ester resin, a urethane (meth) acrylate resin, Acrylic resin and the like can be mentioned.
Among the above, at least one radical curable resin selected from unsaturated polyester resins, vinyl ester resins, urethane (meth) acrylate resins, and acrylic resins is preferred in terms of water resistance and various physical properties.

The elastic polymer particles in the present invention include:
Although not particularly limited, those having rubber-like elasticity are preferable, and rubber particles specified in the rubber material of the vibration-proof rubber of JIS-K-6386-77 are more preferable. The material of the rubber particles is not particularly limited. For example, styrene-butadiene rubber (SBR), acrylonitrile-butadiene rubber (NBR), butadiene rubber (B
R), isoprene rubber (IR), chloroprene rubber (C
R), ethylene / propylene rubber (EPR), urethane rubber, natural rubber and the like. The particle size of the rubber particles is not particularly limited, but is preferably 10 mm or less, more preferably 0.2 to 10 mm, more preferably 0.3 to 8 mm, Even more preferably, it is in the range of 0.3-5 mm, most preferably in the range of 0.5-3 mm.

These rubber particles can be used to grind rubber or
Alternatively, it can be easily obtained by crushing a rubber foam. The method for producing the rubber particles is not particularly limited. Although the ratio of the curable resin or the elastic polymer particles in the curable resin composition is not particularly limited, it is preferable that the curable resin is in a range of 50 to 90% by weight.
More preferably, it is in the range of 0 to 80% by weight,
The content of the elastic polymer particles is preferably in the range of 10 to 50% by weight, and more preferably in the range of 20 to 40% by weight. If the proportion of the elastic polymer particles is less than 10% by weight, a sufficient sound-deadening effect may not be obtained, and if it exceeds 50% by weight, the strength of the top coat layer may be reduced.

The amount of the curable resin composition for forming the top coat layer (A) is not particularly limited, but may be 50
６００600 g / m ² , preferably 100-500 g / m ²
It is. As a method of applying, a brush, a roll, a spray or the like can be used. In the case where the waterproof covering structure is made to have a non-slip walking finish, the non-slip finish can be obtained by forming a protrusion made of rubber particles on the top coat layer (A). An aggregate such as silica sand may be present in the top coat layer (A) and / or between the waterproof layer (B) and the top coat layer (A). Further, in order to color the top coat layer (A), a pigment can be blended with the resin used for forming the top coat layer.

In the present invention, the waterproof layer (B) obtained by curing the fiber-reinforced thermosetting resin composition containing the thermosetting resin and the fiber reinforcing material is a so-called FRP waterproof layer.
By combining the (B) layer, which is the FRP waterproof layer, with the top coat layer (A), excellent waterproofness can be exhibited, and mechanical damage that can be received from the top coat layer (A) built on the top layer. It also has excellent durability against. Examples of the fiber reinforcing material used in the fiber-reinforced thermosetting resin composition include glass fibers;
Organic fibers such as amide, aramid, vinylon, polyester, and phenol; carbon fibers; metal fibers; ceramic fibers; Among these, glass fibers and organic fibers are preferable in consideration of workability and economic efficiency.

The fiber may be in the form of plain weave, satin weave, mat or the like, but is preferably mat in view of workability and thickness maintenance. In addition, glass roving 20 ~ 100m
It is also possible to cut it to about m and use it as a chopped strand. The content of the fiber reinforced material in the fiber reinforced thermosetting resin composition is not particularly limited, but is preferably in the range of 5 to 60% by weight, and more preferably in the range of 10 to 40% by weight. The tensile elongation (JIS-K-7113) of the cured product of the thermosetting resin is not particularly limited, but is preferably 20 to 200%, more preferably 20 to 150%, and still more preferably 30 to 150%.
120%. If it is less than 20%, the ability to follow the movement of the underlying substrate will be poor. If it is more than 200%, calcium chloride resistance, water resistance, alkali resistance, and oil resistance will be poor.

The method for forming the waterproof layer (B) is not particularly limited. For example, a hand lay-up method, a spray-up method, a method of laying a resin-impregnated mat-like fiber reinforced material, Casting method and the like can be mentioned. The thickness of the waterproof layer (B) is not particularly limited,
Usually preferably 0.5-5 mm, more preferably 1-2.
mm. The thermosetting resin used in the waterproof layer (B) is not particularly limited, and examples thereof include an unsaturated polyester resin, a vinyl ester resin, an epoxy resin, a phenol resin, and an acrylic resin. , A radical polymerizable resin is preferred, particularly preferably,
Unsaturated polyester resin and vinyl ester resin.

The content of the thermosetting resin in the fiber-reinforced thermosetting resin composition is not particularly limited, but is preferably 40 to
It is preferably in the range of 95% by weight, more preferably in the range of 60 to 90% by weight. Examples of the unsaturated polyester resin preferably used in the present invention include, for example, polycondensation of α, β-unsaturated dibasic acid or acid anhydride thereof, aromatic saturated dibasic acid or acid anhydride thereof, and glycols. 30 to 80 parts by weight of an unsaturated polyester produced by the combined use of an aliphatic or alicyclic saturated dibasic acid as an acid component in some cases, a polymerizable unsaturated monomer 70 to
Those obtained by dissolving in 20 parts by weight are exemplified.

The vinyl ester resin preferably used in the present invention is, for example, a vinyl ester in which the carboxyl terminal or the hydroxyl terminal of an unsaturated polyester is vinyl-modified with an epoxy compound having an unsaturated group or an isocyanate compound having an unsaturated group. And those obtained by dissolving 30 to 80 parts by weight of a vinyl ester obtained by adding an unsaturated monobasic acid to an epoxy group of a polyfunctional epoxy resin in 70 to 20 parts by weight of a polymerizable unsaturated monomer. . If necessary, a thickener, a filler, a curing agent, a curing accelerator, a low-shrinking agent, a thixotropic agent, a paraffin wax and the like can be added. In particular, it is preferable to add a curing agent and a curing accelerator.

The α, β-unsaturated dibasic acid or anhydride thereof includes, for example, maleic acid, maleic anhydride, fumaric acid, itaconic acid, citraconic acid and esters thereof. As the basic acid or its acid anhydride, phthalic acid, phthalic anhydride, isophthalic acid,
Terephthalic acid, and esters thereof, etc., as aliphatic or alicyclic saturated dibasic acids, oxalic acid, malonic acid, succinic acid, adipic acid, sebacic acid, azelaic acid, glutaric acid, tetrahydrophthalic anhydride, Hexahydrophthalic anhydride and esters thereof. These can be used alone or in combination.

The glycols include ethylene glycol, propylene glycol, diethylene glycol, dipropylene glycol, 1,3-butanediol,
4-butanediol, 2-methylpropane-1,3-diol, neopentyl glycol, triethylene glycol, tetraethylene glycol, 1,5-pentanediol, 1,6-hexanediol, bisphenol A, hydrogenated bisphenol A, etc. Is mentioned. These can be 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.

As the polymerizable unsaturated monomer, styrene,
Vinyl toluene, α-methylstyrene, methyl (meth)
Unsaturated compounds such as vinyl compounds such as acrylate, ethyl (meth) acrylate, methoxydiethylene glycol (meth) acrylate, phenoxyethyl (meth) acrylate and diethylene glycol di (meth) acrylate; and allyl compounds such as diallyl phthalate and triallyl cyanurate Examples include a vinyl monomer crosslinkable with polyester or vinyl ester. These can be used alone or in combination. The filler is not particularly limited, for example, calcium carbonate powder,
Clay, alumina powder, silica stone powder, talc, barium sulfate,
Known materials such as silica powder, glass powder, glass beads, mica, aluminum hydroxide, cellulose yarn, silica sand, river sand, cold water stone, marble chips, crushed stone and the like can be used.

The curing agent is generally used for curing a thermosetting resin such as an unsaturated polyester resin. Specific examples thereof include an azo compound such as azoisobutyronitrile, tertiary butyl perbenzoate, and tertiary butyl perbenzoate. Organic peroxides such as reaper octoate, benzoyl peroxide, methyl ethyl ketone peroxide, dicumyl peroxide and the like can be mentioned. The amount of the curing catalyst used is not particularly limited, but for example, can be generally used in the range of 0.3 to 3 parts by weight based on 100 parts by weight of a thermosetting resin such as an unsaturated polyester resin. As the curing accelerator, metal salts of organic acids, particularly, cobalt salts,
For example, but not limited to, cobalt naphthenate, cobalt octylate, acetylacetocobalt and the like are used.

The primer layer (C) in the present invention is a layer for the purpose of bonding the substrate (D) and the waterproof layer (B). As the primer layer (C), a material having good adhesion to a thermosetting resin is desired. For example, a low-viscosity concrete-impregnated product (viscosity of 300 mPa · s or less) is preferable. Urethane primers, bisphenol A epoxy / polyamine primers, unsaturated polyester resin primers, vinyl ester resin primers and the like can be used.
The coating amount of the primer is 50 to 500 g / m ^{2 in} solution,
Preferably 70 to 300 g / m ² , more preferably 10 g / m ²
0 to 200 g / m ² . As a means for applying, a brush, a roll, a spray gun, or the like is used.

The substrate (D) in the present invention is not particularly limited. For example, the substrate (D) is applied to the surfaces of roofs, rooftops, intermediate floors, ground floors, verandas, basements and the like of buildings and structures, and the surfaces thereof. Existing waterproof surfaces are listed, and the materials are cement concrete, asphalt concrete, mortar, asbestos straight, ALC board, PC board, F
RP materials, plastics, wood materials, metals, and the like.
In the method for applying a composite coated structure according to the present invention, for example, first, a primer is applied to a substrate (D) to form a primer layer (C). Subsequently, a fiber reinforced material is laid on the primer layer and then impregnated with a thermosetting resin, or a fiber reinforced material impregnated with a thermosetting resin is laid to form a waterproof layer (B). Let it form. Subsequently, a top coat layer (A) is formed on the layer (B).

The use of the composite covering structure according to the present invention is not particularly limited.
Roofs, intermediate floors, basement floors, basements, verandas, parking lots, roads, and the like.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below more specifically with reference to the drawings based on examples, but the present invention is not limited by these examples and the drawings. FIG. 1 is a schematic diagram of an embodiment according to the present invention. In FIG.
1 is a substrate, 2 is a primer layer, 3 is a waterproof layer obtained by curing a fiber-reinforced thermosetting resin composition containing a thermosetting resin and a fiber reinforcing material, and 4 is a top coat layer. 4a represents elastic polymer particles, and 4b represents a cured resin composition. In addition, about the floor impact sound evaluation in the following Examples and Comparative Examples, it performed as follows.

[Evaluation of floor impact sound] JIS-A-1418
(1995) (Method of Measuring Floor Impact Sound Level at Building Site). As the evaluation criterion, when the floor impact sound level L value is 70 or less, it is a desirable level excellent in sound deadening. (Example 1) A one-component urethane primer (trade name: NS-YP, manufactured by Nippon Shokubai Co., Ltd.) was uniformly applied on a building roof concrete as a base material in an amount of about 200 g per 1 m ² , and allowed to stand for 3 hours. It was dried to the extent of drying to form a primer layer.

Next, 1% by weight of a curing agent (trade name: Kayamec M, manufactured by Kayaku Akzo) was added to a soft unsaturated polyester resin (trade name: Epolak N-5553, manufactured by Nippon Shokubai Co., Ltd.) containing an accelerator. About 400 g per 1 m ^{2 of the} obtained hardener-added resin is applied uniformly, and then a glass mat # 380 is impregnated with 2 plies of the same hardener-added resin so that the glass content is about 23% by weight. And left to stand for 3 hours to cure it to the touch and dryness to form a waterproof layer. Further, the unsaturated polyester resin for the top coat (trade name: Epolak N-325, manufactured by Nippon Shokubai Co., Ltd.)
Butadiene rubber (BR) classified as A10 specified as a rubber material for vibration damping rubber of IS-K-6386-77 is crushed with 0.5 to 1.0 mm rubber particles and a curing agent (trade name:
A resin composition (unsaturated polyester resin / rubber particles / curing agent / curing accelerator = 100 /) containing a combination of Kayamec M, Kayaku Akzo Co., Ltd.) and a curing accelerator (trade name: Octensan Cobalt, Nippon Shokubai Co., Ltd.) 20/1 / 0.3 parts by weight) was uniformly applied to about 400 g per 1 m ^{2 and} left for 4 hours to form a top coat layer.

When the thus-constructed structure was evaluated for floor impact sound, it was found that the L value was 67, indicating that the structure was excellent in noise reduction. One year after the construction, it was confirmed that there was no water leakage due to damage to the waterproof layer and that the waterproof layer could be used without any problem. Comparative Example 1 A primer layer and a waterproof layer were formed on a building roof concrete in the same manner as in Example 1. Subsequently, a top coat layer was formed in the same manner as in Example 1 except that no rubber particles were blended.

When the floor impact sound evaluation was performed on the constructed structure, the L value was 83, and it was found that the structure did not have sufficient sound deadening properties.

[Brief description of the drawings]

FIG. 1 is a schematic view of an embodiment according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Substrate 2 Primer layer 3 Waterproof layer obtained by hardening a fiber-reinforced thermosetting resin composition containing a thermosetting resin and a fiber reinforcing material 4 Topcoat layer 4a Elastic polymer particles 4b Cured resin composition

According to the present invention, it is possible to provide a novel composite covering structure having excellent performance in waterproofness, noise reduction and anti-slip properties, and a method for constructing the same.

Claims (2)

[Claims] 1. A top coat layer, (B) a waterproof layer obtained by curing a fiber-reinforced thermosetting resin composition containing a thermosetting resin and a fiber reinforcing material, and (C) a primer layer. And (D) a substrate, wherein the top coat layer (A) contains elastic polymer particles. 2. A primer layer (C) and a waterproof layer (B) obtained by curing a fiber-reinforced thermosetting resin composition containing a thermosetting resin and a fiber reinforcing material are sequentially provided on a substrate (D). ,
Subsequently, a top coat layer (A) containing elastic polymer particles is provided on the waterproof layer (B), and a method for constructing a composite coated structure is provided.