KR102104881B1 - Adhesive composition and trenchless rehabilitation of pipe - Google Patents

Abstract

The present invention relates to an adhesive composition and a trenchless rehabilitation method of a water and sewage pipe and, more specifically, to an adhesive composition which secures excellent adhesive strength and flexibility, and has room temperature curing properties through self-heating, and to a trenchless rehabilitation method of a water and sewage pipe.

Description

ADHESIVE COMPOSITION AND TRENCHLESS REHABILITATION OF PIPE

The present application relates to a non-excavation rehabilitation method of an adhesive composition and a water and sewage pipe, and more specifically, to secure excellent adhesive strength and flexibility, and a non-excavation rehabilitation method of an adhesive composition and a water and sewage pipe having room temperature curing properties through self-heating. It is about.

In general, water and sewage pipes used for the transport of drinking water, sewage, and wastewater buried in the ground, when gradually aging over time, generate iron oxide (rust) due to corrosion, causing the water and sewage pipes to burst Therefore, a huge amount of water is leaking into the ground, and it is urgently necessary to replace it with a new water and sewage pipe.

In the renovation work of the water and sewage pipelines buried in the ground, the traditional method of exchanging or repairing the ground after excavating the ground, and various problems associated with excavation of the ground, namely, the erosion of the soil after the ground excavation work, or the treatment of waste. In the case of difficult and congested areas, a non-drilling method of repairing water and sewer lines without dismantling the road has been used in a way to solve problems such as causing traffic jams.

As a non-excavation method, there is a method of repairing by repairing the cracks of the water and sewer pipes after removing impurities such as corrosive substances and scales inside the old water and sewer pipes. Lining, which expands and bonds with steam and compressed air, is widely used.

However, when applying such a construction method, in order to cure the material used as an adhesive, a heating device is used, and a problem that a long time is input even when a heating device is used has emerged.

Therefore, research on an adhesive composition capable of curing at a low temperature in a short time is required.

According to an embodiment of the present application, the synthesis of the epoxy / acrylic / urethane synthesis in consideration of amine bond removal, isocyanate zeroing, and the like is intended to remove the curing generation factor.

According to an embodiment of the present application, it is intended to provide an adhesive composition having a short curing time through self-heating at room temperature.

According to an embodiment of the present application, it is intended to provide an adhesive composition having excellent adhesive strength and flexibility.

According to an embodiment of the present application, it is intended to provide a non-excavation rehabilitation method of water and sewage pipes using the aforementioned adhesive composition.

One aspect of the present application is to prepare a liner for a non-excavation rehabilitation method of water and sewage pipes with a polyethylene film attached to one surface; The liner is impregnated into a mixed solution of an adhesive and a catalyst comprising an epoxy resin, a urethane resin and an acrylic resin in a mixing ratio of 30% to 50% by weight: 20% to 30% by weight: 30% to 50% by weight. And then removing; Freezing the liner to -30 ° C to -10 ° C; Placing the liner inside the water and sewage pipes; And injecting air at room temperature into the inside of the water and sewer pipes, thereby curing the adhesive located between the liner and the water and sewer pipes.

In one example, the catalyst includes at least one of benzoyl peroxide (BPO) and azobisisobutyronitrile (AIBN).

In one example, the mixing ratio of the adhesive and the catalyst is 90 to 99% by weight: 1 to 10% by weight.

Another aspect of the present application is to prepare an epoxy-based resin and a urethane-based resin, respectively; And mixing the epoxy resin and urethane resin with an acrylic resin to prepare an adhesive composition, wherein the epoxy resin, urethane resin and acrylic resin are 30% to 50% by weight: 20% to 30% by weight. %: 30 to 50% by weight is a method for producing an adhesive composition for a non-excavation regeneration method that is mixed in a mixing ratio.

In one example, the step of preparing the adhesive composition by mixing the epoxy-based resin and the urethane-based resin with an acrylic resin is blended at a mixing speed of 40 rpm to 60 rpm.

In one example, the step of preparing an adhesive composition by mixing the epoxy-based resin and the urethane-based resin with an acrylic resin is blended at a blending temperature of 10 ° C to 50 ° C.

In one example, the epoxy-based resin is: 1) Raw material: Bisphenol-A type liquid resin, Bisphenol-A type solid resin, Bisphenol-F type liquid resin at least one or more; 2) catalyst: bismuth-based catalyst; 3) acid: at least one of acrylic acid, methacrylic acid, interaconic acid and tartaric acid; And 4) monomers: one or more of styrene monomer (SM) and methyl methacrylate (MMA) are prepared by mixing under a temperature range of 90 ° C. to 95 ° C. and a pressure of 2 bar to 4 bar.

In one example, the urethane-based resin is: 1) raw material: dipropylene glycol copolyol (DPG copolyol), glycerin ester and ethylene diamine copolymer (EDA copolyol) of at least one; 2) curing agent: at least one of diphenylmethane diisocyanate (MDI), hexamethylene diisocyanate (H-MDI), tolylene diisocyanate (TDI) and isophorone diisocyanate (IPDI); And 3) monomers: methyl methacrylate (MMA), styrene monomer (SM), 2-hydroxypropyl acrylate (2-HPA), 2-hydroxyethyl Methacrylate (2-HEMA), allyl methacrylate (AMA), acrylonitrile (AN), vinyl acetate (VAM), and one or more of ethyl acrylate (EAM) are prepared by mixing under a temperature range of 100 ° C to 120 ° C and a pressure of 1.5 bar to 3.5 bar.

In one example, the acrylic resin is: 1) raw material: paraffin wax and 2) monomer: methyl methacrylate (MMA), styrene monomer (SM), 2 -hydroxypropyl acrylate (2-HPA), 2-hydroxyethyl Methacrylate (2-HEMA ), allyl methacrylate (AMA), acrylonitrile (AN), vinyl acetate (VAM), ethyl acrylate (EAM), butyl acrylate (BAM), 2-ethylhexyl methacrylate (2-EHMA), n-butyl methacrylate (n-BMA) And methacrylamide (MAM), prepared by mixing under a temperature range of 80 ° C to 85 ° C and a pressure of 1 bar to 3 bar.

Another aspect of the present application is for a non-excavation rehabilitation method comprising an epoxy resin, a urethane resin and an acrylic resin in a mixing ratio of 30% to 50% by weight: 20% to 30% by weight: 30% to 50% by weight. It is an adhesive composition.

According to an embodiment of the present application, it is possible to provide an adhesive composition having excellent adhesive strength.

According to an embodiment of the present application, it is possible to provide an adhesive composition having excellent flexibility.

According to an embodiment of the present application, it is possible to provide an adhesive composition that is self-heating at room temperature and cured.

According to an embodiment of the present application, it may be applicable to industries in various fields such as automobiles and submarine tunnels.

1 is a schematic view for explaining the properties of the adhesive.
Figure 2 is a flow chart for a non-excavation rehabilitation method of water and sewage pipes according to an embodiment of the present application.
Figure 3 is a flow chart for a method of manufacturing an adhesive composition that is an embodiment of the present application.
4 is a schematic diagram of an apparatus for performing a method of manufacturing an adhesive composition, which is an embodiment of the present application.
5 is a schematic diagram of a water and sewage pipe to which an adhesive is applied, which is an embodiment of the present application.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present application, terms such as "include" or "have" are intended to designate the existence of features, components, and the like described in the specification, and one or more other features or components may not be present or added. It does not mean nothing.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person skilled in the art to which the present invention pertains. Terms such as those defined in a commonly used dictionary should be interpreted as having meanings consistent with meanings in the context of related technologies, and should not be interpreted as ideal or excessively formal meanings unless explicitly defined in the present application. Does not.

The present application relates to a non-excavation rehabilitation method of water and sewage pipes, and relates to a non-excavation bioengineering method of water and sewage pipes using an adhesive controlled to be curable at room temperature.

As shown in FIG. 1, adhesion means a phenomenon in which two solid surfaces are bonded to each other with a third material as an adhesive therebetween. Here, the adhesive material may include a polymer material for surface adhesion of metal, plastic, ceramic, glass, rubber, and wood.

These adhesives are classified into solvent-type, water-based, and solvent-free adhesives according to the solvent, and are largely classified into resin-based, rubber-based, and mixed-based adhesives according to the adhesive material.

In particular, the structural adhesive applied to the present application does not break for a long time, and guarantees reliability that can withstand a load relatively close to the maximum breaking load. Structural adhesives are used where labels, welds and screws are used.

Here, the structural adhesive is mostly a two-part adhesive, and is preferably composed of a base and an accelerator.

In particular, structural adhesives can be classified into three types: epoxy, urethane, and acrylic, depending on the component. Epoxy-based resin has a strong adhesive strength, no by-products when reacting, and can be cured at room temperature, so its use range is wide. However, the impact resistance is weak. The acrylic resin has strong adhesive strength, no by-products during reaction, can be cured at room temperature, has strong impact resistance, and has excellent flexibility, so its range of use is quite wide. In addition, the acrylic resin has a fast curing speed at room temperature, and can be adhered to various materials such as metal, plastic, wood, glass, ceramic, and has excellent impact resistance, heat resistance, durability, and flexibility, and thus has a wide range of use.

This application relates to a mixed-type structural adhesive that cures within a short time at room temperature of at least 3.0 Mpa with an adhesive strength applicable to the rehabilitation method of water and sewage pipes, and is an adhesive prepared by mixing an epoxy-based resin, a urethane-based resin, and an acrylic resin, for each structural use. The disadvantages of the adhesive can be secured and the advantages can be maximized.

As will be described later, when the adhesive is impregnated with a liner for regeneration of water and sewage pipes and then removed and then stored by cooling, the resin can be cured by simply placing the liner inside the water and sewage and providing air at room temperature. . Specifically, when a mixed structural adhesive is applied, a process using a heating device (boiler) can be omitted, and the curing time can be treated within 2 hours.

Hereinafter, a non-excavation rehabilitation method of water and sewage pipes will be described in more detail with reference to the drawings.

Figure 2 is a flow chart for a non-excavation rehabilitation method of water and sewage pipes according to an embodiment of the present application.

As shown in Figure 2, a non-excavation rehabilitation method of water and sewage pipes according to an embodiment of the present application comprises the steps of preparing a liner for a non-excavation rehabilitation method in which a polyethylene-based film is attached to one surface (S110); The liner is impregnated into a mixed solution of an adhesive and a catalyst comprising an epoxy resin, a urethane resin and an acrylic resin in a mixing ratio of 30% to 50% by weight: 20% to 30% by weight: 30% to 50% by weight. And then removing (S120); Freezing the liner at -30 ° C to -10 ° C (S130); Placing the liner inside the water and sewage pipes (S140); And injecting air at room temperature into the inside of the water and sewage pipe, thereby curing the adhesive located between the liner and the water and sewage pipe (S150).

First, a liner for a non-excavation rehabilitation method with a polyethylene film attached to one surface is prepared (S110). The liner is not particularly limited, and is not particularly limited as long as it is a liner that can be used in the non-excavation rehabilitation method of water and sewage pipes. A polyethyl-based film is attached to one surface of the liner, and when the liner is impregnated with a resin as described later, the resin is applied only to the surface to which the polyethylene-based film is not attached.

Then, the liner is impregnated in a mixed solution of an adhesive and a catalyst and then removed (S120).

Here, the catalyst preferably contains at least one of benzoyl peroxide (BPO) and azobisisobutyronitrile (AIBN).

In addition, the mixing ratio of the adhesive and the catalyst is preferably 90 to 99% by weight: 1 to 10% by weight, more preferably 95 to 98% by weight: 2 to 5% by weight, most preferably 97% by weight: 3 Weight percent.

These catalysts do not act as a curing agent, and the liner impregnated with the adhesive does not act as a curing agent when frozen at low temperatures, as described below, but acts as a curing agent when air at room temperature is provided, and rapidly cures the resin, And water and sewage pipes to facilitate adhesion.

The adhesive will be described later.

Then, the liner is frozen to -30 ° C to -10 ° C (S130). Through this step, the action of the curing agent can be stopped once. As described above, the curing agent included in the present application can easily cure the resin at room temperature.

Then, the liner is placed inside the water and sewage pipes (S140). Refrigerated liners are placed inside the water and sewage pipes that need regeneration. As a method applied to such a process, a method that is obviously used in the art including the present application may be applied.

And, by introducing air at room temperature into the interior of the water and sewage pipes, the adhesive positioned between the liner and the water and sewage pipes is cured (S150).

Conventionally, the air is injected at a fairly high temperature to cure the adhesive, but the present application can cure the adhesive resin located between the liner and the water supply pipe by introducing air at a low temperature, for example, room temperature.

Here, it is preferable that air is introduced at a pressure of 1 bar to 3 bar.

Hereinafter, a method of manufacturing the above-described adhesive will be described in detail.

3 is a flow chart of a method of manufacturing an adhesive composition, which is an embodiment of the present application, and FIG. 4 is a schematic diagram of an apparatus for performing a method of manufacturing an adhesive composition, which is an embodiment of the present application.

3 and 4, the manufacturing method of the adhesive composition comprises the steps of preparing an epoxy resin and a urethane resin (S210) and mixing the epoxy resin and the urethane resin with an acrylic resin to prepare an adhesive composition. Step S220 is included.

First, an epoxy resin and a urethane resin are respectively prepared (S210).

In the container 110 for epoxy resin production 1) Raw materials: At least one of Bisphenol-A type liquid resin, Bisphenol-A type solid resin, and Bisphenol-F type liquid resin; 2) catalyst: bismuth-based catalyst; 3) acid: at least one of acrylic acid, methacrylic acid, interaconic acid and tartaric acid; And 4) monomer: At least one of styrene monomer (SM) and methyl methacrylate (MMA) is added. Then, the introduced material is mixed under a temperature range of 90 ° C to 95 ° C and a pressure of 2 bar to 4 bar to prepare an epoxy resin.

In addition, in the container 120 for urethane-based resin production 1) raw materials: at least one of dipropylene glycol copolyol (DPG copolyol), glycerin ester and ethylene diamine copolymer (EDA copolyol); 2) curing agent: at least one of diphenylmethane diisocyanate (MDI), hexamethylene diisocyanate (H-MDI), tolylene diisocyanate (TDI) and isophorone diisocyanate (IPDI); And 3) monomers: methyl methacrylate (MMA), styrene monomer (SM), 2-hydroxypropyl acrylate (2-HPA), 2-hydroxyethyl Methacrylate (2-HEMA), allyl methacrylate (AMA), acrylonitrile (AN), vinyl acetate (VAM) and ethyl acrylate (EAM). Then, the injected material is mixed under a temperature range of 100 ° C to 120 ° C and a pressure of 1.5 bar to 3.5 bar to prepare a urethane-based resin.

Then, an epoxy resin and a urethane resin are mixed with an acrylic resin to prepare an adhesive composition (S220).

As described above, the epoxy-based resins and urethane-based resins respectively manufactured may be subjected to a cooling process while being accommodated in the container 110 for manufacturing an epoxy-based resin and the container 120 for manufacturing a urethane-based resin.

In addition, 1) raw material: paraffin wax and 2) monomer: methyl methacrylate (MMA), styrene monomer (SM), 2-hydroxypropyl acrylate (2-HPA), 2-hydroxyethyl methacrylate (2-) in an acrylic resin manufacturing container 130. HEMA), allyl methacrylate (AMA), acrylonitrile (AN), vinyl acetate (VAM), ethyl acrylate (EAM), butyl acrylate (BAM), 2-ethylhexyl methacrylate (2-EHMA), n-butyl methacrylate (n-BMA) ) And methacrylamide (MAM). The injected material is mixed under a temperature range of 80 ° C to 85 ° C and a pressure of 1 bar to 3 bar to prepare an acrylic resin.

Here, paraffin wax can also be used for the purpose of releasability and thixotropy.

The cooled epoxy-based resin and urethane-based resin are put into an acrylic resin-made container 130 in which an acrylic resin is accommodated.

Here, the step of preparing an adhesive composition by mixing the epoxy-based resin and the urethane-based resin with an acrylic resin is preferably blended at a mixing speed of 40 rpm to 60 rpm. In addition, the step of preparing an adhesive composition by mixing an epoxy resin and a urethane resin with an acrylic resin is preferably blended at a blending temperature of 10 ° C to 50 ° C.

When the amine and the isocyanate react directly, a rapid heating reaction occurs. As described above, it is possible to effectively prevent the rapid heating reaction from occurring by mixing each separately and then preparing the mixture.

The component ratio of the adhesive composition prepared as described above is specifically, epoxy-based resin, urethane-based resin and acrylic resin mixed in a mixing ratio of 30% to 50% by weight: 20% to 30% by weight: 30% to 50% by weight do.

Through this, it is possible to provide an adhesive excellent in adhesive strength and curability, thereby easily providing a bond between a water supply pipe and a liner.

Specifically, the structural adhesive, which is an embodiment of the present application, is an adhesive produced by synthesizing / mixing epoxy, acrylic, and urethane, and can improve adhesive strength compared to polyester and epoxy resin adhesives applied to the rehabilitation method of existing water and sewage pipes. Can be. In addition, the mixed structural adhesive has urethane-based properties, so it can secure flexibility in new water and sewage pipes, so it is possible to secure impact resistance against external shocks such as earthquakes. In addition, it has the characteristics of curing at room temperature through self-heating, so it is possible to omit the process of using the heating device required for the conventional regeneration method (hot water boiler operation and steam inflow process), thereby reducing energy costs and reducing construction costs. Can be. So, the curing time can be shortened to less than 2 hours compared to the curing time (8 hours to 11 hours) required for the conventional rehabilitation method, thereby reducing construction time and cost. Through this, the structural adhesive, which is an embodiment of the present application, can be applied to various fields of industries such as automobiles and submarine tunnels.

5 is a schematic view of the water and sewage pipe manufactured by the above-described water and sewage pipe rehabilitation method. As shown in FIG. 5, the liner 220 is located in the water and sewer pipe 210, and the PE film 230 attached to one surface of the liner 220 is located.

Hereinafter, the present application will be described in more detail through experimental examples.

[ Experimental Example ]

First, an epoxy-based resin and a urethane-based resin were prepared as follows.

Epoxy-based resins include: Bisphenol-A type liquid resin and Bisphenol-A type solid resin and catalyst: bismuth type catalyst; Acid: acrylic acid, methacrylic acid; And monomer: styrene monomer (SM) and methyl methacrylate (MMA) were introduced into a container, and then mixed at a pressure of 120 ° C. under 3 bar.

In addition, the urethane-based resin is a raw material: dipropylene glycol copolyol (DPG copolyol), glycerin ester; Hardener: diphenylmethane diisocyanate (MDI), hexamethylene diisocyanate (H-MDI), and monomers: methyl methacrylate (MMA), styrene monomer (SM), 2-hydroxypropyl acrylate (2-HPA) was added to a container, and then It was prepared by mixing under a pressure of 2.5 bar at a temperature.

The prepared epoxy resin and urethane resin were respectively cooled.

Then, an acrylic resin was prepared as follows. For the acrylic resin, paraffin wax, methyl methacrylate (MMA), styrene monomer (SM), 2-hydroxypropyl acrylate (2-HPA), and 2-hydroxyethyl Methacrylate (2-HEMA) were added to the container, and at a temperature of 83 ° C., 2 It was prepared by mixing under the pressure of bar.

After the epoxy resin and the urethane resin were added to the prepared acryl-based resin, the mixture was mixed at a temperature of 30 ° C. at a mixing speed of 50 rpm to prepare an adhesive composition.

The physical properties shown in Table 1 below were measured and are shown together in Table 1.

Item Result Baseline Inspection standard Density (g / ml) 0.915 1.0 ± 0.10 KS M ISO 2811-1: 2007 Viscosity (25 ℃) (mPa, s) 30 20 or more and 50 or less KS M ISO2555: 2002 (Confirmation 2007) VOC content (%) 3.48 5 or less USEPA Method 24 Drying time (curing) (min) 50 60 or less KS M 5000: 2009 Pot life (min) 23 25 or less A ASHTOT237: 2004 The tensile strength
(MPa) Day 1 20 ℃ 2.5 2 or more KS M 3006: 2003
(Confirmation: 2008) 7th day -10 ℃ 20.7 20 or more KS M 3006: 2003
(Confirmation: 2008) 20 ℃ 7.7 7 or more KS M 3006: 2003
(Confirmation: 2008) 60 ℃ 0.7 0.5 or more KS M 3006: 2003 (Confirmation: 2008) Elongation
(%) 7th day -10 ℃ 8 5 or more KS M 3006: 2003
(Confirmation: 2008) 20 ℃ 44 40 or more KS M 3006: 2003
(Confirmation: 2008) 60 ℃ 62 50 or more KS M 3006: 2003 (Confirmation: 2008)

As shown in Table 1, it was confirmed that excellent properties were secured as an adhesive.

Although described above with reference to the preferred embodiments of the present application, those skilled in the art may variously modify and change the present application without departing from the spirit and scope of the present invention described in the following claims. You will understand that you can.

110: Epoxy-based resin manufacturing container
120: Urethane-based resin manufacturing container
130: acrylic resin manufacturing container
210: water and sewage pipe
220: liner
230: PE film

Claims (10)

Preparing a liner for a non-excavation rehabilitation method of a water and sewage pipe having a polyethylene film attached to one surface;
The liner is impregnated into a mixed solution of an adhesive and a catalyst comprising an epoxy resin, a urethane resin and an acrylic resin in a mixing ratio of 30% to 50% by weight: 20% to 30% by weight: 30% to 50% by weight. And then removing;
Freezing the liner to -30 ° C to -10 ° C;
Placing the liner inside the water and sewage pipes; And
Including the step of curing the adhesive located between the liner and the water and sewage pipes by introducing air at room temperature into the interior of the water and sewage pipes,
The acrylic resin is:
1) Raw material: paraffin wax and
2) Monomer: methyl methacrylate (MMA), styrene monomer (SM), 2 -hydroxypropyl acrylate (2-HPA), 2-hydroxyethyl Methacrylate (2-HEMA), allyl methacrylate (AMA), acrylonitrile (AN), vinyl acetate ( VAM), ethyl acrylate (EAM), butyl acrylate (BAM), 2-ethylhexyl methacrylate (2-EHMA), n-butyl methacrylate (n-BMA) and methacrylamide (MAM) at 80 ° C to 85 ° C Non-excavation regeneration method of water and sewage pipes prepared by mixing under a temperature range and a pressure of 1 bar to 3 bar. According to claim 1,
The catalyst is benzoyl peroxide (benzoyl peroxide, BPO) and azobisisobutyronitrile (azobisisobutyronitrile, AIBN) at least one of water and sewage pipes containing a non-excavated regeneration method. According to claim 1,
The mixing ratio of the adhesive and the catalyst is 90 to 99% by weight: 1 to 10% by weight of non-excavation regeneration method of water and sewage pipes. Preparing an epoxy resin and a urethane resin, respectively; And
And mixing the epoxy resin and the urethane resin with an acrylic resin to prepare an adhesive composition,
The epoxy-based resin, urethane-based resin and acrylic-based resin are mixed in a mixing ratio of 30% to 50% by weight: 20% to 30% by weight: 30% to 50% by weight,
The acrylic resin is:
1) Raw material: paraffin wax and
2) Monomer: methyl methacrylate (MMA), styrene monomer (SM), 2 -hydroxypropyl acrylate (2-HPA), 2-hydroxyethyl Methacrylate (2-HEMA), allyl methacrylate (AMA), acrylonitrile (AN), vinyl acetate ( VAM), ethyl acrylate (EAM), butyl acrylate (BAM), 2-ethylhexyl methacrylate (2-EHMA), n-butyl methacrylate (n-BMA) and methacrylamide (MAM) at 80 ° C to 85 ° C Method for producing an adhesive composition for a non-excavation rehabilitation method prepared by mixing under a temperature range and a pressure of 1 bar to 3 bar. The method of claim 4,
Mixing the epoxy-based resin and urethane-based resin with an acrylic-based resin, the step of preparing an adhesive composition is a method for producing an adhesive composition for a non-excavation regeneration method that is blended at a mixing speed of 40 rpm to 60 rpm. The method of claim 4,
The step of preparing the adhesive composition by mixing the epoxy-based resin and the urethane-based resin with an acrylic-based resin is a method of manufacturing an adhesive composition for a non-excavation regeneration method formulated at a blending temperature of 10 ° C to 50 ° C. The method of claim 4,
The epoxy resin is:
1) Raw materials: one or more of Bisphenol-A type liquid resin, Bisphenol-A type solid resin, and Bisphenol-F type liquid resin;
2) catalyst: bismuth-based catalyst;
3) acid: at least one of acrylic acid, methacrylic acid, interaconic acid and tartaric acid; And
4) Monomer: Preparation of an adhesive composition for a non-excavation regeneration method prepared by mixing at least one of styrene monomer (SM) and methyl methacrylate (MMA) under a temperature range of 90 ° C to 95 ° C and a pressure of 2 bar to 4 bar. Way. The method of claim 4,
The urethane-based resin is:
1) Raw materials: At least one of dipropylene glycol copolyol (DPG copolyol), glycerin ester and ethylene diamine copolymer (EDA copolyol);
2) curing agent: at least one of diphenylmethane diisocyanate (MDI), hexamethylene diisocyanate (H-MDI), tolylene diisocyanate (TDI) and isophorone diisocyanate (IPDI); And
3) Monomer: methyl methacrylate (MMA), styrene monomer (SM), 2-hydroxypropyl acrylate (2-HPA), 2-hydroxyethyl methacrylate (2-HEMA), allyl methacrylate (AMA), acrylonitrile (AN), vinyl acetate ( VAM), and ethyl acrylate (EAM) at least one of 100 ° C to 120 ° C in the temperature range and 1.5 bar to 3.5 bar pressure to prepare a mixture of non-excavation rehabilitation method for producing an adhesive composition. delete Epoxy-based resin, urethane-based resin and acrylic resin 30% by weight to 50% by weight: 20% to 30% by weight: 30% by weight to 50% by weight, and includes a mixing ratio,
The acrylic resin is:
1) Raw material: paraffin wax and
2) Monomer: methyl methacrylate (MMA), styrene monomer (SM), 2 -hydroxypropyl acrylate (2-HPA), 2-hydroxyethyl Methacrylate (2-HEMA), allyl methacrylate (AMA), acrylonitrile (AN), vinyl acetate ( VAM), ethyl acrylate (EAM), butyl acrylate (BAM), 2-ethylhexyl methacrylate (2-EHMA), n-butyl methacrylate (n-BMA) and methacrylamide (MAM) at 80 ° C to 85 ° C Adhesive composition for a non-excavation rehabilitation method prepared by mixing under a temperature range and a pressure of 1 bar to 3 bar.

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