KR102171507B1 - The adhesive composition for waterproof and root isolation polymer sheet and tape and method for preparing the same - Google Patents

Abstract

The present invention relates to an adhesive composition comprising: 5 to 20 wt% of a rubber-based main resin; 3 to 10 wt% of a tackifier; 1 to 10 wt% of process oil; and a remaining solvent based on the total weight of the adhesive composition. According to the present invention, the adhesive composition is capable of securing high adhesive strength without impairing the performance of a sheet used for waterproof and anti-corrosive purpose.

Description

Adhesive composition for waterproof and anti-corrosion polymer sheet and tape, and its manufacturing method {THE ADHESIVE COMPOSITION FOR WATERPROOF AND ROOT ISOLATION POLYMER SHEET AND TAPE AND METHOD FOR PREPARING THE SAME}

The present invention relates to a waterproof and anti-dust polymer sheet and an adhesive composition for a tape and a method for manufacturing the same, and more particularly, to an adhesive composition applied to a waterproof or anti-dust polymer sheet and a waterproof tape, and a method of manufacturing the same.

In general, a waterproofing method is applied to a building or a civil engineering structure.If the waterproofing is incorrect, leakage and flooding occur in the civil engineering and building structures, and accordingly, corrosion and damage to the completed structure are caused, resulting in enormous damage. In response to this, conventionally, various waterproofing materials such as penetration waterproofing material, rubberized asphalt sheet waterproofing material, and water-soluble rubberized asphalt coating waterproofing material have been used.

Leakage is caused by damage to the waterproof layer caused by ground subsidence and temperature change of the underlying structure such as concrete and the effect of external vibrations (subway movement, blasting of construction in nearby areas), etc., and the water flowing into the floating area diffuses along the floating surface of the waterproof layer. Because it is a phenomenon that flows into the room through the defective part of the concrete structure while moving, waterproofing technology has been developed in the direction of solving them. In other words, when such a behavior and vibration occurs, the waterproof layer is stretched by giving the waterproof layer an elongation, thereby preventing damage to the defective part of the expanded ground surface due to the behavior, or by giving elasticity to the waterproof layer to absorb the effects of vibration and prevent vibration destruction. They are taking a response method. However, in the case of a conventional waterproofing material with elongation and elasticity, when the elastic band is stretched, stress is generated in the elastic band and the opposite force is applied, so that the conventional waterproofing material having elongation and elasticity acts opposite to the direction of the structure's behavior. Even during vibration, in order to maintain the inner central axis, movement in the opposite direction to the vibration occurs, and after a certain period of time elapses, damage and lifting of the waterproof layer may occur.

In addition, in recent years, there are many projects of building rooftop greening or building indoor gardens to improve urban ecosystems and urban environments, and these rooftop greening and indoor gardens restore soil ecosystem, save energy for cooling and heating, alleviate urban heat island phenomenon, It is recommended because it has various advantages in terms of environmental and economic aspects, such as urban flood prevention, air purification, water purification, noise reduction, urban landscape improvement, and durability improvement of buildings. It is regulated to have greening facilities, and some local governments also provide funding to install rooftop greening facilities.

Despite the advantages of rooftop greening, there are various reasons why rooftop greening is not activated, but among them, the roots of plants grow and damage the building. Because it does. In other words, by creating a rooftop greening or an indoor garden, the roots of plants easily penetrate the existing waterproofing layer, which causes waterproofing problems.

Accordingly, there is a need to develop an adhesive composition capable of securing high adhesion without impairing the performance of a polymer sheet used for waterproofing and anti-dust.

The present invention was devised in consideration of the above circumstances, and is intended to provide an adhesive composition capable of securing high adhesive strength and a method of manufacturing the same without impairing the performance of sheets or tapes used for the purpose of waterproofing and waterproofing. do.

According to an aspect of the present invention, based on the total weight of the adhesive composition, 5 to 20% by weight of the rubber-based main resin; 3 to 10% by weight of a tackifier; 1 to 10% by weight of process oil; And an adhesive composition containing the balance solvent.

The rubber-based main resin is natural rubber (NR), chloroprene rubber, styrene ethylene butylene styrene block copolymer (SEBS) rubber, styrene isoprene styrene block copolymer (SIS) rubber, styrene butadiene styrene block copolymer (SBS) rubber, Polyisoprene rubber, styrene butadiene block copolymer (SB) rubber, styrene isoprene block copolymer (SI) rubber, styrene isoprene butadiene styrene block copolymer (SIBS) rubber, styrene ethylene propylene styrene block copolymer (SEPS) rubber, styrene ethylene It may be one or more selected from propylene block copolymer (SEP) rubber and rubber styrene butadiene styrene block copolymer (SBS) rubber.

The adhesion-imparting agent may be at least one selected from C5 petroleum resin, C9 petroleum resin, C5/C9 copolymer resin, hydrogenated petroleum resin, rosin and rosin derivatives.

The process oil may be at least one selected from paraffinic oil, naphthenic oil, and aromatic oil.

The solvent may be at least one selected from xylene and toluene.

The solvent is based on the total weight of the mixed solvent, 60 to 80% by weight of toluene, 2 to 7% by weight of 3-methylhexane, 2 to 7% by weight of 2-methylhexane, 2 to 7% by weight of methylcyclohexane, trans- 1,2-Dimethylcyclopentane 1 to 5% by weight, 2,3-dimethylpentane 0.5 to 2% by weight, cis-1,3-Dimethylcyclopentane 0.5 to 2% by weight, and trans-1,3-Dimethylcyclopentane 0.5 to 2% by weight It may be a mixed solvent containing.

According to another aspect of the present invention, the step of preparing a hot-melt resin comprising a rubber-based main resin, an adhesive agent, and a process oil; And there is provided a method of manufacturing an adhesive composition comprising the step of injecting and dispersing the hot melt resin and additives in a solvent.

The step of preparing the hot melt resin may be performed at 160 to 180°C.

The temperature of the solvent may be 40 to 60 ℃.

The additive may be at least one selected from an organic dispersing agent, an antifoaming agent, and a layer separation preventing agent.

According to the present invention, there is provided an adhesive composition capable of securing high adhesive strength without impairing the performance of sheets and tates used for the purpose of waterproofing and anti-corrosion.

1 is a photograph of a hot melt resin according to an embodiment of the present invention.
Figure 2 schematically shows the construction method of the adhesive composition according to an embodiment of the present invention.
3 shows the adhesive strength when the PE-based polymer sheet is adhered using the adhesive composition according to the present invention (sample A) and the adhesive strength when the PE-based polymer sheet is adhered using a commercially available adhesive composition (sample B ) Is a test report measured.

Hereinafter, preferred embodiments of the present invention will be described with reference to various examples. However, embodiments of the present invention may be modified in various other forms, and the scope of the present invention is not limited to the embodiments described below.

The present invention relates to an adhesive composition and a manufacturing method thereof, and more particularly, to an adhesive composition applicable to a waterproof or anti-dust polymer sheet and a waterproof tape, and a method of manufacturing the same.

According to an aspect of the present invention, the steps of preparing a hot melt resin comprising a rubber-based main resin, an adhesive agent, and a process oil; And there is provided a method of manufacturing an adhesive composition comprising the step of injecting and dispersing the hot melt resin and additives in a solvent.

First, a step of preparing a hot melt resin including a rubber-based main resin, an adhesive agent, and a process oil is performed.

The rubber-based main resin is not particularly limited, but, for example, natural rubber (NR), chloroprene rubber, styrene ethylene butylene styrene block copolymer (SEBS) rubber, styrene isoprene styrene block copolymer (SIS) rubber, styrene Butadiene styrene block copolymer (SBS) rubber, polyisoprene rubber, styrene butadiene block copolymer (SB) rubber, styrene isoprene block copolymer (SI) rubber, styrene isoprene butadiene styrene block copolymer (SIBS) rubber, styrene ethylene propylene styrene At least one selected from block copolymer (SEPS) rubber, styrene ethylene propylene block copolymer (SEP) rubber, and rubber styrene butadiene styrene block copolymer (SBS) rubber may be used, preferably natural rubber and chloroprene rubber. I can.

The rubber-based main resin is preferably contained in an amount of 5 to 20% by weight, based on the total weight of the adhesive composition. If it is less than 5% by weight, if it is less than 5%, the adhesion performance may be deteriorated, whereas if it is more than 20% by weight, the processability may decrease by causing a decrease in viscosity of the adhesive composition, and the rubber-based main resin is relatively expensive. , It causes an increase in the cost of materials.

The adhesion-imparting agent added to improve the adhesion performance of the adhesive composition is not particularly limited, but, for example, C5 petroleum resin, C9 petroleum resin, C5/C9 copolymer resin, hydrogenated petroleum resin, rosin, rosin derivative and terpene At least one selected from the derivatives may be used, and preferably C9 petroleum resin may be used.

The adhesion-imparting agent is preferably included in an amount of 3 to 10% by weight, based on the total weight of the adhesive composition. If it is less than 3% by weight, adhesion at room temperature and low temperature, which is one of the important performances, may be deteriorated, whereas if it is more than 10% by weight, it will be brittle at low temperature, thereby deteriorating the low temperature bending performance

It is specially limited as a process oil that is added to the Soviet Union/blending action of rubber-based materials, helps the lubricating action of the polymer (as an internal lubricant), facilitates blending, suppresses heat generation, and facilitates dispersion of blending agents. Although not, for example, one or more selected from paraffinic oil, naphthenic oil, and aromatic oil may be used, and the process oil is included in an amount of 1 to 10% by weight based on the total weight of the adhesive composition. It is desirable. When it is less than 1% by weight, dissolution, stirring, and dispersion of the material is difficult, whereas when it is more than 10% by weight, it may be difficult to use by remarkably deteriorating the adhesion performance of the adhesion-imparting agent.

On the other hand, the step of preparing the hot melt resin is preferably performed at 160 to 180 ℃. When the temperature is less than 160℃, it is difficult to completely dissolve the rubber-based resin, so when the raw material is discharged, the resin is filtered and the resin concentration decreases, making it difficult to adjust the concentration. On the other hand, when it exceeds 180℃, carbonization of the rubber-based resin occurs and physical properties. This may result in a decrease in adhesion performance. In addition, the step is preferably performed for 15 to 30 hours.

Next, an adhesive composition may be obtained by performing the step of adding and dispersing the hot melt resin and the additive in a solvent. By preparing a hot melt resin and putting it into a solvent, there is an advantage in that the measurement and mixing of the raw material components can be made more easily.

The solvent is not particularly limited, but xylene and toluene may be used, and most preferably, as a mixed solvent, 60 to 80% by weight of toluene and 2 to 7% by weight of 3-methylhexane based on the total weight of the mixed solvent %, 2-methylhexane 2 to 7 wt%, methylcyclohexane 2 to 7 wt%, trans-1,2-Dimethylcyclopentane 1 to 5 wt%, 2,3-dimethylpentane 0.5 to 2 wt%, cis- A mixed solvent containing 0.5 to 2% by weight of 1,3-Dimethylcyclopentane and 0.5 to 2% by weight of trans-1,3-Dimethylcyclopentane may be used. Examples of the mixed solvent as described above include SK General Chemical's Clean-7, etc., and when the mixed solvent is used, it is possible to improve the adhesion of the adhesive composition and reduce the amount of VOCs (volatile organic compounds) generated.

On the other hand, the temperature of the solvent is preferably 40 to 60 ℃. When the temperature of the solvent is less than 40°C, there is a problem that the viscosity of the mixed composition is low and processability is inferior, whereas when the temperature of the solvent exceeds 60°C, the solvent is evaporated and the mixing ratio of raw materials is different. , A fire hazard may occur due to vaporization of the solvent.

On the other hand, as the additive, an organic dispersant, an antifoaming agent, and an anti-layer separation agent may be used. As the organic dispersant, antifoaming agent, and layer-separation inhibitor, materials commonly used in the art may be used, but for example, as an organic dispersant, it is preferable to use a high molecular organic dispersant of polycarboxylic acid, and the antifoaming agent is a silicone-based or mineral oil-based antifoaming agent. Can be used.

Figure 2 schematically shows the construction method of the adhesive composition according to an embodiment of the present invention. Referring to Figures 2 (a) and (b), the adhesive composition of the present invention uses a polymer sheet developed to prevent root intrusion of plants due to rooftop greening and urban greening, or a composite sheet and other polymer materials such as PE. It can be applied to the manufactured sheet, and after constructing the lower sheet using a polymer material, an adhesive composition may be applied to the overlapped upper sheet and the overlapped portion, or a double-sided tape coated with the adhesive composition may be applied. On the other hand, referring to Figures 2 (c) and (d), the bottom sheet and the top sheet are bonded with a double-sided tape coated or bonded with an adhesive composition, and after bonding the top and bottom sheets, the top overlap for bonding of the polymer sheet The overlap can be sealed with a tape treated with an adhesive composition.

Hereinafter, the present invention will be described in more detail through specific examples. The following examples are only examples to aid understanding of the present invention, and the scope of the present invention is not limited thereto.

Example

Selection of raw materials for adhesive composition

As a raw material of the adhesive composition, in order to design the optimum blending ratio, an adhesive composition solution was prepared for various materials, and a performance test was performed, and the results are shown in Table 1.

The evaluation of the 23°C room temperature adhesion ability was measured according to the test method specified in KS F 4934: 2008, and the low-temperature flexural performance evaluation was measured according to the test method specified in KS F 4917: 2007. In addition, the wet surface adhesion performance was measured in the following manner.

Evaluation method of adhesion performance on wet surface

1) As the test specimen, two mortar specimens that were not perforated used as permeable specimens were used, and the mortar specimens were integrated.

2) On the bottom of the upper mortar test piece, a synthetic polymer sheet of φ 100 mm Х 2 mm is completely bonded with epoxy bond. Then, a spacer of φ 10 mm Х 10 mm made of iron and plastic is attached with epoxy bond at three places between the upper and lower mortar specimens. However, the mass of the base plate of the test body with spacers attached is cut off so that the mass becomes (600±5) g, or the mass is adjusted by attaching lead or the like on the back.

3) Place the upper mortar specimen with the synthetic polymer sheet attached on the spacer attached to the lower mortar specimen surface, and seal the gap between the upper and lower mortar specimens with transparent tape.

4) Immerse the test body in water at a water temperature (20±2)℃, inject the sealing material according to the method specified by the manufacturer, and let it stand in water for 24 hours.

5) While lifting the test object underwater, take it out slowly from the water so that no force is applied to the sealing material and remove the transparent tape. After that, pick up the mortar test piece on the upper part of the test body, and measure the time until the base plate of the test body falls off with a stopwatch that can measure from that moment to 1/100 second. (The base plate of the test specimen should not come off within 60 seconds)

-10℃ contact adhesion 23℃ room temperature attachment
KS F 4934 Wet surface adhesion test
KS F 4935 Toluene Xylene Toluene Xylene Pass or not 1.Rosin ester phenol resin 5% + solvent 95% △ △ 2.0 1.7 OK 2. Rosin ester phenol resin 10% + solvent 90% △ △ 1.9 1.5 OK 3. Rosin ester phenol resin 5% + SIS 5% 　　　+ solvent 90% □ □ 2.3 2.1 OK 4. C9 Petroleum Resin A 10% + Solvent 90% ○ ○ 2.2 2.0 OK 5. C9 petroleum resin B 10% + solvent 90% × × 2.4 2.0 OK 6. C9 Petroleum resin C 10% + solvent 90% △ △ 2.0 1.8 OK 7. Low molecular weight SBS 10% + solvent 90% △ △ 1.5 1.3 OK 8. C9 Petroleum resin D 10% 　 + solvent 90% △ △ 1.3 1.2 OK 9. Low molecular weight SBS 5% + Petroleum resin A 5% 　　　+ Solvent 90% □ □ 1.3 1.0 OK 10. Polybuden 10% + Solvent 90% × × 2.0 1.8 OK 11.SEBS 5% + C9 Petroleum resin A 5%　　　　+　 Solvent (90%) ◎ ◎ 2.7 2.4 OK 12. SEBS 5% + C9 Petroleum resin E 5%　　　　+　 Solvent (90%) □ □ 2.3 2.3 OK 13. SEBS 5% + Rosin ester petroleum resin 5%　　　　+　 Solvent (90%) ○ ○ 2.0 2.0 OK 14. SIS 5% + C9 Petroleum Resin A 5% 　　　　+　 Solvent (90%) ○ ○ 1.6 1.4 OK 15. SIS 5% + C9 Petroleum resin E 5%　　　　+　 Solvent (90%) □ □ 1.9 1.7 OK 16. SIS 5% + rosin ester phenolic resin 5%
+ Solvent (90%) □ □ 1.5 1.4 OK

* -10℃ Contact Adhesion Performance Symbol: ◎: Upper, ○: Upper Middle, □: Middle, △: Middle Lower, Х: Lower

Preparation of adhesive composition

After heating to 160°C to 180°C using mineral oil, a hot melt was prepared so that the contents of the rubber-based main resin, the adhesion-imparting agent, and the process oil were as shown in Table 2 below based on the total weight of the prepared adhesive composition. Thereafter, the hot melt was added to Clean-7 of SK General Chemical, a solvent, to prepare an adhesive composition, and physical property evaluation was performed. As a result, it was confirmed that overall excellent physical properties were shown, and in particular, Example 2 showed the most excellent physical properties. Specific physical property evaluation methods are as described above, and viscosity was measured using a Brookfield viscometer (HB-DVE, Brookfield Thermocell HT-60, spindle number SC4-27, operating RPM 30, test temperature 120°C).

120℃ 30rpm viscosity (cps)
(Blockfield Thermocell) 23℃ room temperature attachment (N) After 30 minutes at -20℃
Chamber low temperature attachment (N) KS F 4934 KS F 4934 1.Low molecular weight SBS 15% + C9 petroleum resin A 5%
+ 4% process oil + residual solvent 2290 2.49 0.65 2. SEBS 15% + C9 petroleum resin A 5% + process oil 4% + residual solvent 2610 3.78 0.84 3. SEBS 10% + C9 petroleum resin A 5% + process oil 3% + residual solvent 1950 3.18 0.48 4. SEBS 10% + C9 petroleum resin A 5% + low molecular weight SBS 3% 　　　+ process oil 5% + residual solvent 1980 2.95 0.42 5. SIS 15% + C9 petroleum resin A 5% + process oil 4% + residual solvent 2020 3.10 0.35 6. SIS 10% + C9 petroleum resin A 5% + process oil 3% + residual solvent 1850 2.80 0.45 7. Low molecular weight SBS 5% + Polymer SBS 5% + Petroleum resin A 5% 　　　+ Process oil 3% + residual solvent 2050 2.49 0.53 8. High molecular weight SBS 10% + Petroleum resin A 5% + Process oil 3% 　 + residual solvent 2100 2.78 0.39

Adhesive strength measurement

3 is a PE-based polymer using the adhesive strength (sample A) when a PE-based polymer sheet is adhered using the adhesive composition according to Example 2 of Table 2 and a commercially available Weld-On 600 product of IPS Inc. It shows a test report measuring the adhesive strength (sample B) when the sheet is adhered, and specific test and measurement conditions are as described in FIG. 3. As can be seen in Figure 3, in the case of sample A using the adhesive composition according to the present invention, compared to sample B using a commercially available adhesive composition, the maximum adhesion load increased by about 4 times, and thus it was confirmed that the adhesion was significantly improved. have.

Although the embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and variations are possible without departing from the technical spirit of the present invention described in the claims. It will be obvious to those of ordinary skill in the field.

Claims (10)

Based on the total weight of the adhesive composition, 5 to 20% by weight of the rubber-based main resin; 3 to 10% by weight of a tackifier; 1 to 10% by weight of process oil; And a residual solvent, wherein the solvent is 60 to 80% by weight of toluene, 2 to 7% by weight of 3-methylhexane, 2 to 7% by weight of 2-methylhexane, and methylcyclohexane 2 based on the total weight of the mixed solvent. To 7% by weight, trans-1,2-Dimethylcyclopentane 1 to 5% by weight, 2,3-dimethylpentane 0.5 to 2% by weight, cis-1,3-Dimethylcyclopentane 0.5 to 2% by weight, and trans-1,3- Adhesive composition, characterized in that it is a mixed solvent containing 0.5 to 2% by weight of dimethylcyclopentane.
The method of claim 1,
The rubber-based main resin is natural rubber (NR), chloroprene rubber, styrene ethylene butylene styrene block copolymer (SEBS) rubber, styrene isoprene styrene block copolymer (SIS) rubber, styrene butadiene styrene block copolymer (SBS) rubber, Polyisoprene rubber, styrene butadiene block copolymer (SB) rubber, styrene isoprene block copolymer (SI) rubber, styrene isoprene butadiene styrene block copolymer (SIBS) rubber, styrene ethylene propylene styrene block copolymer (SEPS) rubber, styrene ethylene Adhesive composition, characterized in that at least one selected from propylene block copolymer (SEP) rubber and rubber styrene butadiene styrene block copolymer (SBS) rubber.
The method of claim 1,
The adhesive composition, wherein the adhesion-imparting agent is at least one selected from C5 petroleum resin, C9 petroleum resin, C5/C9 copolymer resin, hydrogenated petroleum resin, rosin and rosin derivatives.
The method of claim 1,
The process oil is an adhesive composition, characterized in that at least one selected from paraffin oil, naphthenic oil, and aromatic oil.
delete delete Preparing a hot-melt resin comprising a rubber-based resin, an adhesive agent, and a process oil; And
Including the step of injecting and dispersing the hot melt resin and additives in a solvent,
The solvent is based on the total weight of the mixed solvent, 60 to 80% by weight of toluene, 2 to 7% by weight of 3-methylhexane, 2 to 7% by weight of 2-methylhexane, 2 to 7% by weight of methylcyclohexane, trans- 1,2-Dimethylcyclopentane 1 to 5% by weight, 2,3-dimethylpentane 0.5 to 2% by weight, cis-1,3-Dimethylcyclopentane 0.5 to 2% by weight, and trans-1,3-Dimethylcyclopentane 0.5 to 2% by weight Method for producing an adhesive composition, characterized in that the mixed solvent containing.
The method of claim 7,
The manufacturing method of the adhesive composition, characterized in that the step of preparing the hot melt resin is carried out at 160 to 180 ℃.
The method of claim 7,
Method for producing an adhesive composition, characterized in that the temperature of the solvent is 40 to 60 ℃.
The method of claim 7,
The additive is a method of manufacturing an adhesive composition, characterized in that at least one selected from an organic dispersing agent, an antifoaming agent, and a layer separation preventing agent.

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