JPH0345682A - Sheet-waterproofing and sheet-waterproofing and heat insulating - Google Patents

Abstract

PURPOSE:To improve adhesive properties, base resistance and water resistance by adhering a substrate material made of concrete or mortar with a sheet made of an ethylene.propylene terpolymer and using a specified adhesive. CONSTITUTION:100 pts.wt. (hereinbelow described as pts.) urethane-modified epoxy resin (a), 20-150 pts. adhesiveness imparting agent (b) for ethylene.propylene terpolymer(EPT), 10-200 pts. curing agent (c) and, if necessary, 20-80 pts. epoxidized natural rubber and 20-100 pts. tackifier (d) are compounded as a two-pack type contg. either component (a) or (c) in each pack to obtain an adhesive (C). After at least one of a substrate made of concrete or mortar (A) and a sheet (B) made of EPT is coated with the component (C), the component (A) is adhered to the component (B).

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a sheet waterproofing method for waterproofing concrete or mortar buildings.

Further, the present invention provides structures such as gymnasiums and water tanks,
This article relates to a sheet waterproofing and insulation construction method for constructing a waterproof and insulation floor on a concrete or mortar base material.

<Conventional Technology> Conventionally, the rooftops of medium- and high-rise concrete buildings have been subjected to some kind of waterproofing work to prevent water leakage due to rainwater, etc. These waterproofing works can be broadly classified into the following mini-methods.

(1) Alphalt waterproofing method (2) Paint film waterproofing method (3) Sheet waterproofing method The asphalt waterproofing method is the oldest method in history, is a highly reliable waterproofing method, and is relatively inexpensive in terms of construction cost. Therefore, although this construction method is now widely used, the dirt on the body and clothes is noticeable because it deals with pitch black asphalt.
Moreover, as it emits a foul odor when the asphalt melts, it is not welcomed by construction workers, and depending on the construction site, there are many complaints from nearby residents, so it is gradually declining. In addition, as an improvement method of asphalt waterproofing method, "cold construction method",
There are "torch construction methods" etc.

The coating film waterproofing method is similar to the asphalt construction method, but unlike the asphalt construction method, there is almost no generation of dirt or strange odors.
Although it is preferred over the asphalt method in terms of finish and performance, the thickness of the coating film is thinner than that of asphalt (
Paint film defects are likely to occur), due to irregularities in the base material! ! There are drawbacks such as non-uniformity in film thickness.

The sheet waterproofing method is a construction method in which a waterproof sheet is bonded to concrete using an adhesive or metal fittings, or the like, either directly or via a synthetic resin foam as a heat insulating material, and is a construction method that has become extremely popular in recent years. The materials for the waterproof sheet include vulcanized or unvulcanized rubber, vinyl chloride resin (hereinafter referred to as
pvc), ethylene-propylene terpolymer (
(hereinafter referred to as EPT), and the like is used as the material for the synthetic resin foam, such as foamed polyethylene.

In the case of the sheet waterproofing method, an adhesive is used to fix the waterproof sheet or heat insulating material to a base material such as concrete. Therefore, the selection of adhesive plays a very important role.

Adhesive selection (a) It should not deteriorate the waterproof sheet or insulation material, (b) It should have excellent adhesion, (C) It should be able to follow cracks in the base material such as concrete, (d) The key criteria are whether or not the material has the following characteristics: ) excellent weather resistance and water resistance (especially important at the seams between sheets), and (8) economical. Adhesives used in sheet waterproofing methods can be categorized into rubber adhesives, epoxy adhesives,
There are four types of adhesives: urethane adhesives and synthetic resin emulsion adhesives.

<Problems to be Solved by the Invention> As mentioned above, the sheet waterproofing method has become the mainstream of the hob construction methods in recent years.

In the sheet waterproofing method, it is important to select the adhesive as well as the material for the waterproof sheet and the heat insulating material, and at present, one of the four types of TL II agents is used. However, when using EPT waterproof sheets, whose weather resistance has been attracting attention in recent years, or when using foamed polyethylene as a heat insulating material, it is difficult to use any of the four conventionally used adhesives. , does not fully satisfy the characteristics (a) to (e') above.

In other words, rubber adhesives are mainly composed of chloroprene or nitrile rubber, and are currently used as adhesives for EPT because they have a large initial adhesive strength and excellent low-temperature properties and crack followability. However, the adhesive strength is not sufficient, it is not economical, the air-drying conditions are easily affected by weather and humidity, and since it is a solvent type, it has disadvantages such as bulging often occurs due to residual C1 solvent.

Epoxy adhesives can be applied thickly, are not affected by the moisture content in concrete, and the epoxy resin itself has excellent water resistance and has properties as a waterproof coating, but it has poor elongation properties, especially at low temperatures. It has poor elongation properties, therefore lacks crack followability, and is also inferior to other adhesives in terms of initial adhesive strength.

Urethane adhesives have excellent crack tracking properties, but are extremely difficult to use because they are a two-component type consisting of a base agent and a hardening agent, and even slight differences in the mixing ratio of these two components have a large effect on the properties of the adhesive. It is difficult to use, and it is hydrolyzable, so
There is also a problem with water resistance.

Emulsion adhesives include vinyl acetate adhesives and acrylic adhesives, which are the most commonly used.

Emulsion adhesives are non-flammable and have good compatibility with concrete substrates, making them extremely easy to apply on-site. It has disadvantages such as easy bulging.

As mentioned above, in the sheet waterproofing method, when applying an EPT waterproof sheet to a base material such as concrete,
Also, there are no known adhesives that are useful when pasting foamed polyethylene, which is a heat insulating material.In particular, when pasting foamed polyethylene on a base material, there are no known adhesives that can be applied without brimer treatment on the surface of the base material. It has not been done.

The present invention was made in view of the above facts, and has excellent adhesion, base resistance, and water resistance, and can be applied to concrete or mortar base materials without brimer treatment.
The purpose of the present invention is to provide a simple sheet waterproofing method and sheet waterproofing insulation method using an adhesive capable of bonding a PT waterproof sheet or a heat insulating material such as foamed polyethylene.

Means for Solving the Problems> The present invention is a sheet waterproofing method in which a sheet made of ethylene-propylene terpolymer is bonded to a base material made of concrete or mortar. After applying an adhesive containing 20 to 150 parts by weight of an adhesion promoter and a curing agent to at least one of the two adherends to the ethylene/propylene terpolymer, The object of the present invention is to provide a sheet waterproofing method characterized in that the sheet made of the ethylene-propylene terpolymer is adhered to the sheet.

The present invention also provides a sheet waterproofing and insulation method that includes the step of bonding a heat insulating material to a base material made of concrete or mortar, in which ethylene-propylene terpolymer is added to 100 parts by weight of a urethane-modified epoxy resin. After applying an adhesive containing 20 to 150 parts by weight of an adhesion imparting agent and a curing agent to the surface of the base material and/or the heat insulating material, the heat insulating material is bonded to the core of the base material, and then,
A sheet waterproof insulation method characterized by adhering a sheet made of polyvinyl chloride or an ethylene/propylene ternary copolymer onto the heat insulating material, or a sheet made of an ethylene/propylene ternary copolymer for 100 g of a urethane-modified epoxy resin. An adhesive containing 20 to 150 parts by weight of an adhesion imparting agent to the polymer and a curing agent is applied to the surface of the base material and/or to the surface of the base material on which a polyvinyl chloride or ethylene propylene terpolymer sheet is adhered. The present invention provides a sheet waterproofing and insulation construction method, characterized in that the sheet is coated on the back side of the heat insulating material, and then the heat insulating material to which the sheet is bonded is bonded to the base material.

The adhesive preferably further contains 20 to 80 parts by weight of epoxidized natural rubber per 100 g parts of the urethane-modified epoxy resin, and/or contains a tackifier. .

The present invention will be explained in detail below.

The first aspect of the present invention is to apply a specific adhesive to the surface of the concrete or mortar base material and/or the back surface of the EPT waterproof sheet, and to adhere the EPT waterproof sheet to the concrete or mortar base material. This is a sheet waterproofing method. In other words, a construction method in which adhesive 2 is applied to the surface of a base material 1 made of concrete or mortar and the back surface of an EPT waterproof sheet 3, and the EPT waterproof sheet 3 is bonded to the base material 1 (see Figure 1a); sheet 3
After applying adhesive 2 to the back side of the
(see figure), concrete or mortar base material 1
This is a construction method (see Fig. 1C) in which an adhesive 2 is applied to the surface and then an EPT waterproof sheet 3 is adhered to a base material 1.

In the first aspect of the present invention, the specific two-component adhesive described below is used as the adhesive, so the two components are mixed in a predetermined ratio and then applied under normal conditions, such as comb coating, roller coating, etc. Then, apply the adhesive at a coating amount of about 200 to 600 g/m''. Then, if necessary, evaporate the volatile content, press the EPT waterproof sheet, and leave it under normal conditions for about 0.5 to 7 days. After curing, the waterproofing work will be completed.

A second aspect of the present invention is a sheet having a step of applying a specific adhesive to the surface of a concrete or mortar base material and/or a heat insulating material, and bonding the heat insulating material to the concrete or mortar base material. This is a waterproof insulation method.

Note that a waterproof sheet made of PVC or EPT is adhered onto the heat insulating material, but the waterproof sheet may be adhered before or after adhering the heat insulating material to the base material.

To explain based on the drawings, the construction method includes a step of applying adhesive 2 to the surface of the base material 1 made of concrete or mortar and the heat insulating material 4, and bonding the heat insulating material 4 to the base material 1 (see Figure 2a); A construction method that includes the step of applying an adhesive 2 from four insulation materials and then bonding it to a base material 1 made of concrete or mortar (see Figure 2b), bonding it to the surface of the base material 1 made of concrete or mortar. After applying the adhesive 2, the process includes the step of gluing the heat insulating material 4 to the base material 1 (see Figure 2C). In these construction methods, after bonding the heat insulating material to the base material, a known adhesive is applied. A waterproof sheet made of PVC or EPT is adhered onto the heat insulating material using a known method.

Alternatively, concrete or mortar base material 1
Adhesive 2 on the front surface and the back surface of the heat insulating material 4 to which the waterproof sheet 3 made of PVC or EPT is adhered with adhesive 5
(see Figure 3a), the back side of the insulation material 4 where the waterproof sheet 3 made of PVC or EPT is adhered with the adhesive 5. 2 and then bonding it to a base material 1 made of concrete or mortar (3rd method)
b), after applying adhesive 2 to the surface of concrete or mortar base material 1, apply PVC or EPT
This is a construction method (see Fig. 3c) that includes the step of adhering a heat insulating material 4 to a base material 1&: to which a waterproof sheet 3 made of aluminum is bonded with an adhesive 5.

'In the second embodiment C of the present invention, the adhesive used for pasting the PvC or EPT waterproof sheet on the heat insulating material is a known and commonly used adhesive such as NBR-based or CRX-. Also, the bonding method may be any conventional method known in the art.

On the other hand, the adhesive used to attach the insulation material to the base material is
It is a specific two-component adhesive described below, and after mixing the two components in a predetermined ratio, it can be applied under normal conditions, such as comb coating, roller coating, etc., in a coating amount of approximately 200 to 600 g/m''. Apply adhesive. Then, if necessary, evaporate volatile matter, press insulating material, and cure for about 0.5 to 7 days.

The EPT sheet used in the construction methods of the first and second embodiments of the present invention described above is a ternary compound made of ethylene, propylene, and dienes such as butadiene, dicyclopentadiene, and 5-methylene-2-norbornene. A sheet made of an original copolymer, and a PvC sheet refers to a sheet made of a soft vinyl chloride resin or its copolymer resin. Examples include vinyl chloride vinylidene chloride copolymer resin, ethylene/vinyl chloride copolymer, ethylene/vinyl acetate/vinyl chloride copolymer resin, and the like.

The heat insulating material used in the construction method shown in the second aspect of the present invention is made of foamed polyethylene, foamed polyurethane, foamed polystyrene, or the like. There are a wide variety of methods for producing foams such as foamed polyethylene, and foams of various densities can be obtained.

And these foams: (a) have good thermal insulation properties, do not lose flexibility even at extremely low temperatures, and can withstand fairly high temperatures;

(b) Not affected by water, nor does it absorb or permeate water.

(c) Good chemical solvent resistance.

It has the following characteristics.

In the first aspect of the present invention and in the second aspect of the present invention, the adhesive used for bonding the base material and the heat insulating material is: (1) based on 100 parts by weight of the urethane-modified epoxy resin;
Ethylene-propylene terpolymer (containing 20 to 150 parts by weight of adhesion imparting agent and curing agent, (2) 100 parts by weight of urethane-modified epoxy resin,
20 to 150 parts by weight of an adhesion agent for the ethylene/propylene terpolymer and 20 to 8 parts by weight of epoxidized natural rubber.
0 parts by weight and a curing agent; or (3) a tackifier is further added to (1) or (2) above.

The components contained in these urethane-modified epoxy resin adhesives will be explained in detail below.

The components contained in the urethane-modified epoxy resin adhesive are a urethane-modified epoxy resin, an adhesive agent for EPT, a curing agent, epoxidized natural rubber, and a tackifier.

Urethane-modified epoxy resin is produced by reacting (a) a compound having an epoxy group and a hydroxyl group, and (b) a urethane bond-containing compound containing an isocyanate group at the end obtained from a polyhydroxyl compound and a polyisocyanate compound. can get.

(a) A compound having an epoxy group and a hydroxyl group is a compound having 1 to 3 epoxy groups and 1 to 2 hydroxyl groups in the molecule, and preferably has a molecular weight of 70 to 70.
2000 compounds. Examples include glycidyl ethers of polyhydric alcohols such as glycidol, ethylene glycol monoglycidyl ether, and glycerin diglycidyl ether, and commercially available epoxy resins having hydroxyl groups.

(b) The urethane bond-containing compound containing an isocyanate group at the terminal is produced by the reaction of (b-t) a polyhydroxyl compound and (b-2) a polyisocyanate compound.

(b-1) As the polyhydroxyl compound, for example,
Examples include various polyester polyols or polyether polyols used in the production of general urethane compounds.

Examples of the polyester polyol mentioned here include condensates of polyhydric alcohols and polybasic carboxylic acids, condensates of hydroxycarboxylic acids and polyhydric alcohols, etc. The polyhydric alcohols used in these include, for example, ethylene Examples of polybasic carboxylic acids include glycol, propylene glycol, butanediol, diethylene glycol, glycerin, hexanetriol, and trimethylolpropane. Examples of polybasic carboxylic acids include adipic acid, geltal acid, azelaic acid, fumaric acid, maleic acid, phthalic acid, Examples include terephthalic acid, dimer acid, and pyromellitic acid.

In addition, condensates of hydroxycarboxylic acids and polyhydric alcohols include castor oil, castor oil and ethylene glycol,
Reaction products such as propylene glycol are also useful.

Examples of polyether polyols include products obtained by addition-polymerizing one or more alkylene oxides such as ethylene oxide, propylene oxide, butylene oxide, and tetrahydrofuran to a compound having two or more active hydrogens, Any known polyether polyol used in the production of ordinary polyurethane resins can be used. In this case, examples of compounds having two or more active hydrogens include, in addition to the polyhydric alcohols and polybasic carboxylic acids mentioned above, ayone compounds such as ethylene cyanide and hexamethylene diamine, and ethanolamine. , alkanolamines such as propatoolamine, polyhydric phenols such as resorcinol and bisphenol, and castor oil.

(b-2) The polyisocyanate compound used in the production of a urethane bond-containing compound containing an isocyanate group at the end is a compound having two or more isocyanate groups in the molecule, and is a compound that has two or more isocyanate groups in its molecule. For example, tolylene diisocyanate, diphenylmethane diisocyanate, hexamethylene diisocyanate, triphenylmethane triisocyanate, etc. can be used.

The urethane-modified epoxy resin has the above (a) and (b-1)
(b-2), preferably produced as follows.

The urethane bond-containing compound containing an isocyanate group at the end can be obtained by reacting a polyhydroxyl compound and a polyisocyanate compound in the same manner as in the production method of a usual isocyanate group-containing urethane prepolymer.

A urethane-modified epoxy resin can be obtained by reacting a urethane bond-containing compound containing an isocyanate group at the end with the above-mentioned compound having an epoxy group and a hydroxyl group using conventional method C.

The adhesion imparting agent for EPT may be any adhesive compound having a polarity close to that of EPT, but preferably butyl rubber, halogenated butyl rubber, EPT, styrene-ethylene/butylene block copolymer, and carboxy group-containing styrene- One or more types of ethylene/butylene block copolymers are used.

As the curing agent, a general curing agent for epoxy resins can be used, but preferably a curing agent used in a room temperature curing solvent-based epoxy resin adhesive is used.

Specifically, aliphatic polyamines, aromatic polyamines, modified aliphatic polyamines, polyamide amines, various mercaptan curing agents, liquid NBR having an amino group at the end,
Examples include acid anhydrides, latent curing agents, and tertiary amines, with polyamines being preferred.

These curing agents may be used alone or in combination.

Epoxidized natural rubber is natural rubber latex that has been epoxidized by partially oxidizing the double bonds Q. For example, ENR-2 is oxidized using peracetic acid, etc.
0% ENR-30, ENR-50 (both KtlM
POLANGUTI(RIE SEN[RIAN 8
Products known by trade names such as ERHAD (manufactured by ERHAD) are commercially available, and these may be used.

Such epoxidized natural rubber is compatible with epoxy resins, and when mixed with epoxy resins, imparts excellent tack to the epoxy resin composition and improves the initial adhesion of the composition.

The epoxidation rate of the epoxidized natural rubber is preferably 20% or more, preferably 30% or more of the double bonds present in the natural rubber.

If it is less than 20%, the compatibility with the epoxy resin is poor,
This is because, on the contrary, the tackiness decreases.

Examples of the tackifier include rosin or its derivatives, natural resins such as terpene resins, petroleum resins, and hydrogenated petroleum resins, and one or more of these may be used. More specifically, the rosin includes, for example, gum rosin, wood rosin,
Tall oil, etc., and its derivatives include modified rosin,
Examples include its methanol ester, its glycerin ester, its pentaerythritol ester, and hydrogenated products thereof. Petroleum resins include aromatic petroleum resins and copolymer petroleum resins made of styrene, α-methylstyrene, vinyltoluene, indene, methylindene, etc.; hydrogenated petroleum resins include cyclopentadiene-based hydrogenated petroleum resins; Examples include resins, C4 and C11 mixed hydrogenated petroleum resins, and the like.

Next, the blending amount of each component will be described.

The urethane-modified epoxy resin adhesive used in the present invention is
For 100 parts by weight of urethane-modified epoxy resin, EPT
Contains 20 to 150 parts by weight of an adhesion promoter, preferably 120 parts by weight of 5ON, and a curing agent.
20 to 150 parts by weight, preferably 50 to 120 parts by weight, of an adhesion promoter to T, and 20 to 120 parts by weight of epoxidized natural rubber.
80 parts by weight, preferably 30 to 70 parts by weight, and a curing agent.2) Alternatively, in (1) or (2) above, a tackifier is further contained.

If the adhesion imparting agent for EPT is less than 20 parts by weight, the adhesiveness of the cured product will be insufficient or insufficient, and if it exceeds 150 parts by weight, even if the amount is more than this, there will be no particular effect, Water resistance and base resistance deteriorate.

The amount of curing agent used is not particularly limited, but preferably 10 to 2 parts by weight per 100 parts by weight of the urethane-modified epoxy resin.
00 parts by weight.

Within this range, an appropriate curing speed will be achieved. If the amount of epoxidized natural rubber is less than 20 parts by weight, the initial adhesiveness of the urethane-modified epoxy resin adhesive used in the present invention will be insufficient, and if it is more than 80 parts by weight, the viscosity of the adhesive itself will increase. Workability deteriorates.

The amount of the tackifier used is not particularly limited, but preferably 2 parts by weight per 100 parts by weight of the urethane-modified epoxy resin.
The amount is 0 to 100 parts by weight.

Within this range, effects such as improved adhesion to adherends and cohesive force can be expected.

In addition to the above-mentioned essential components, various additives can be added to such a urethane-modified epoxy resin adhesive as necessary.

For example, solvents, anti-sagging agents, fillers, curing accelerators, pigments, adhesion promoters, antifoaming agents, leveling agents, polymerization agents, rubber,
These are plasticizers, heat-resistant anti-aging agents, and other additives.

Furthermore, an unmodified epoxy resin may also be added.

As the solvent, xylene, toluene, methyl ethyl ketone, etc. can be suitably used, and as the filler, silica, talc, calcium carbonate, calcium clay silicate, etc. can be suitably used.

The urethane-modified epoxy resin adhesive may be manufactured as a two-part type containing only one of the urethane-modified epoxy resin and the curing agent. Preferably, the urethane-modified epoxy resin, adhesion promoter, filler, etc. are mixed in a solvent. On the other hand, a curing agent, a solvent, a filler, etc. may be mixed to form a two-part adhesive composition, and a two-part room temperature curing adhesive composition may be obtained.

<Example> The present invention will be specifically described below with reference to Examples and Comparative Examples.

The compositions of Examples and Comparative Examples are shown in Table 1.

The adhesive liquid was obtained by mixing a urethane-modified epoxy resin, an adhesion agent for EPT, epoxidized natural rubber, a tackifier, a solvent, and other specified raw materials.

The two-part adhesive was obtained by mixing a curing agent, a solvent, and other predetermined raw materials.

As adherends to be bonded, EPT sheets, commercially available polyethylene foams, and mortar plates (JIS A 5
758, 6.8.2) was used.

After mixing the adhesive liquid and the two adhesive liquids, apply it uniformly to the surface of the mortar board in the comb direction using a comb-like trowel, press an EPT sheet or polyethylene foam onto the coated surface, and apply it to the surface of the mortar board in the normal state. Curing (20±2° C., 60±10% RH) was performed. Peel adhesion strength was measured under the following conditions using a test piece after 48 hours of normal curing. The results are shown in Table 1.

[11 Peel Adhesive Strength (a) A 180 degree peel test was conducted at normal room temperature and a tensile speed of 200 mm/min.

(b) Water Resistance Test After immersing the piece in warm water at 40°C for 48 hours, a peel test was conducted under the same conditions as the normal adhesive strength.

(c) Place the base resistance test piece in a 0.1% sodium hydroxide aqueous solution at room temperature for 48 hours.
After being immersed for a period of time, a peel test was conducted under the same conditions as for normal adhesive strength.

(d) Heat resistance test piece was heated for 48 hours in a constant temperature bath adjusted to 80°C, then allowed to cool at room temperature for 2 hours, and a peel test was conducted under the same conditions as the normal adhesive strength.

Explanation of the ingredients of the adhesive 1) Glycidol, polytetramethylene glycol (molecular weight 850), tri2) Glycidol, polybutylene diglycol (molecular weight 2000), Isof 3) Hydrogenated bisphenol A type epoxy resin EP-4080, salt type Ihi [manufactured by a certain company (epoxy equivalent: 250) 4) Terminal amine acrylonitrile/butadiene rubber HYCARATBN 1
300x16, manufactured by Gutdrich Chemical Co., Ltd. 5) Modified aliphatic polyamine Adeka hardener E) I-270, manufactured by Shirokata Kakogyo Co., Ltd. 6
) 2,4.6-tri(dimethylaminomethyl)phenol sequal TDMP manufactured by Fi Kogaku Co., Ltd. 7) Clayton G1652, manufactured by Shell Chemical Co., Ltd. 8
) Toughtic M1 manufactured by Asahi Kasei Industries 9)
Finton 1500. Nippon Zeon Co., Ltd., urethane-modified epoxy resin made from diisocyanate (epoxy equivalent: 680) r: Urethane-modified epoxy resin made from olone diisocyanate (epoxy equivalent: 1300) As is clear from Table 1, by the method of the present invention, EPT
Although it is a simple method, it was possible to bond a polyethylene foam sheet or a polyethylene foam with a mortar board with high adhesive strength in normal conditions, water resistance, base resistance, and heat resistance.

Furthermore, among the methods of the present invention, it has been found that a practically sufficient adhesive force can be obtained by applying an adhesive to only one of the two adherends.

<Effects of the Invention> The urethane-modified epoxy resin adhesive used in the sheet waterproofing method and sheet waterproofing insulation method of the present invention has the following characteristics. The sheet waterproofing method, which involves applying a waterproof sheet, and the sheet waterproofing and insulation method, which involves applying a heat insulating material to a similar base material, improves workability during construction, reduces time, and significantly improves performance after construction.

(1) Long pot life.

(2) Oven assembly time can be longer.

(3) Brimer A heat insulating material such as an EPT waterproof sheet or polyethylene foam can be adhered to a concrete or mortar base material without the need for IA processing.

(4) Adhesion can be achieved by coating on one side of the adherend.

(5) Excellent adhesiveness.

(6) Excellent flexibility.

(7) Good water resistance and base resistance.

[Brief explanation of drawings]

Figures 1a, 341b and 1c are diagrammatic cross-sectional views illustrating the sheet waterproofing method of the present invention. Figures 2a, 2b, 2c, 3a, 3b, and 3c are diagrammatic cross-sectional views illustrating the sheet waterproofing and insulation method of the present invention. Explanation of symbols 1... Base material, 2... Adhesive, 3... Waterproof sheet, 4... Heat insulating material, 5... Adhesive) FIG, 1a FIG, 1b FIG, 1c 815, 11, 3 ↓ F) G, 2a FIG, 2b F I G, 3a F I G, 3b FfG, 3c m! Futari Nyu N Preliminary 1

Claims (1)

[Scope of Claims] (1) A sheet waterproofing method in which a sheet made of ethylene-propylene terpolymer is adhered to a base material made of concrete or mortar, which comprises urethane-modified epoxy resin 10
After applying an adhesive containing 20 to 150 parts by weight of an adhesion imparting agent for the ethylene propylene terpolymer and a curing agent to at least one of the two adherends based on 0 parts by weight, A sheet waterproofing method comprising adhering the ethylene-propylene terpolymer sheet to the base material. (2) The adhesive further includes epoxidized natural rubber,
20 to 100 parts by weight of urethane-modified epoxy resin
The sheet waterproofing method according to claim 1, wherein the sheet waterproofing method contains 80 parts by weight. (3) The sheet waterproofing method according to claim 1 or 2, wherein the adhesive further contains a tackifier. (4) A sheet waterproofing and insulation method that includes the process of bonding a heat insulating material to a base material made of concrete or mortar, which has adhesion to ethylene-propylene terpolymer to 100 parts by weight of urethane-modified epoxy resin. Imparting agent 20
After applying an adhesive containing ~150 parts by weight and a curing agent to the surface of the base material and/or the heat insulating material, the heat insulating material is adhered to the base material, and then polychloride is applied onto the heat insulating material. A sheet waterproofing and insulation construction method characterized by adhering sheets made of vinyl or ethylene-propylene terpolymer. (5) A sheet waterproofing and insulation method that includes the process of bonding a heat insulating material to a base material made of concrete or mortar, which has adhesion to ethylene-propylene terpolymer to 100 parts by weight of urethane-modified epoxy resin. Imparting agent 20
Applying an adhesive containing ~150 parts by weight and a curing agent to the surface of the base material and/or the back surface of the heat insulating material to which the polyvinyl chloride or ethylene propylene terpolymer sheet is adhered. After that, a heat insulating material to which the sheet has been bonded is bonded to the base material. (6) The adhesive further includes epoxidized natural rubber,
20 to 100 parts by weight of urethane-modified epoxy resin
The sheet waterproofing and insulation method according to claim 4 or 5, which contains 80 parts by weight. (7) The sheet insulation waterproofing method according to any one of claims 4 to 6, wherein the adhesive further contains a tackifier.