KR102242313B1 - Non-hardening sealing material and waterproofing method using the same - Google Patents

Abstract

The present invention relates to a non-hardening sealing material and a waterproofing method using the same, wherein the non-hardening sealing material contains: 20 to 50 parts by weight of asphalt; 5 to 15 parts by weight of modifier; 10 to 20 parts by weight of a plasticizer; 25 to 40 parts by weight of a filler; and 5 to 15 parts by weight of an adhesive. An object of the present invention is to provide the non-hardening sealing material which has adhesive flexible properties that can form an external waterproofing layer on the outside of a structure, and can respond to a large behavioral width of a structure in a cryogenic condition.

Description

Non-hardening sealing material and waterproofing method using the same}

The present invention relates to a non-curing sealing material having an adhesive flexible property capable of forming an outer waterproof layer on the outside of a structure, an adhesive waterproof sheet including the same, and a waterproofing method using the same.

Non-hardening sealant is a material that has adhesive and flexible properties, and is not permanently hardened, so it has the ability to follow up when repeated behavior occurs in cracks or joints of structures, and other waterproofing materials such as self-healing performance and wet surface adhesion performance. As it has the performance that (sheet-based or coating-based waterproofing material) does not have, it is used as a composite waterproofing material laminated with sheet material and non-hardening sealing material in the roof and basement of infrastructure such as building structures and civil engineering structures including apartment houses, and as a leak repair material. Is being used.

In general, waterproofing materials are damaged by changes in temperature conditions and the behavior of the structure, which is the basis of waterproofing, or leakage defects occur due to deterioration in long-term durability.In order to reduce such performance degradation and defects, in Korea, constant temperature changes, We have developed and used an adhesive flexible type non-hardening sealant that responds to the behavior of structures. In more detail, Korea began developing the world's first non-hardening sealant from 2000 and is currently in the position of a source technology holder. It has been partially applied (exported) to the construction market in the United States, Europe, and Southeast Asia since about 2010, and has been applied (exported) for the last 2-3 years. From the past, with great interest in the Chinese market, he has tried to introduce Korean technology, importing products and attempting to produce in-house in China.

(Non-curable rubber modified asphalt coating for waterproofing)'을 마련하여 품질 기준 체계를 우리나라보다 먼저 수립하여 관리하고 있다. Korea has secured the original technology that started the development and production of uncured sealants first, but there is no quality control standard (KS, etc.) for stable production and quality control, and thus competition to secure the market in a situation where such a product management system has not been established. As a result, there are many problems when low-cost low quality is used. Meanwhile, in the case of China, interest in non-hardening sealants and the need for production in China increased, and in 2017, related companies began to set standard standards (JC/T 2428-2017).

(Non-curable rubber modified asphalt coating for waterproofing) was established and the quality standard system was established and managed before Korea.

Therefore, in an atmosphere where the Chinese construction market intends to expand the production and application of uncured sealing materials as the flagship waterproofing material in the future, it is urgently necessary to establish “Korea-China joint quality standards” as a strategy for leading the Korean technology to this. Moreover, the non-hardening sealant manufactured in Korea is manufactured based on Korea's limited climate environment, so there is a limit to its international expansion application.

Therefore, even in countries where the size of the continent is large and the climatic conditions of each region are significantly different, such as China, in order to increase the quality competitiveness of domestically manufactured uncured sealants, the large crack behavior width of the structure under various temperature conditions, especially at cryogenic temperature conditions. There is a demand for the development of a non-hardening sealant that can cope with the situation.

An object of the present invention is to provide a non-hardening sealing material that has an adhesive flexible property capable of forming an outer waterproof layer on the outside of a structure, and can cope with a large movement width of a structure, particularly in cryogenic conditions.

Another object of the present invention is to provide a waterproofing material capable of responding to a large movement width of a structure in cryogenic conditions, including the non-hardening sealing material described above.

Another object of the present invention is to provide a waterproof sheet capable of responding to a large movement width of a structure in cryogenic conditions, including the non-hardening sealing material described above.

Another object of the present invention is to provide a waterproofing method capable of responding to a large movement width of a structure in cryogenic conditions by using the above-described non-hardening sealing material.

Another object of the present invention is to provide a water leakage repair material comprising the above-described non-hardening sealant and capable of repairing water leakage occurring in a structure.

However, the technical problem to be achieved by the present invention is not limited to the problems mentioned above, and other problems that are not mentioned will be clearly understood by those of ordinary skill in the art from the following description.

According to an embodiment of the present invention, 20 to 50 parts by weight of asphalt; 5 to 15 parts by weight of a modifier; 10 to 20 parts by weight of plasticizer; 25 to 40 parts by weight of a filler; And it relates to a non-cured sealing material containing 5 to 15 parts by weight of an adhesive.

In the present invention, the asphalt may be AP-3, AP-5, or a mixture thereof.

In the present invention, the modifier is at least one selected from the group consisting of styrene butadiene styrene block copolymer (SBS), isobutylene isoprene rubber (IIR), and styrene butadiene latex (SBL). I can.

In the present invention, the modifier is styrene butadiene styrene (SBS) 1 to 5 parts by weight; 3 to 7 parts by weight of isobutylene isoprene rubber (IIR); And 1 to 3 parts by weight of styrene butadiene latex (SBL).

In the present invention, the plasticizer may be a naphthenic process oil.

In the present invention, the filler may be one or more selected from the group consisting of _{calcium carbonate (CaCO 3} ), talc, and silicon dioxide (SiO _{2 ).}

In the present invention, the calcium carbonate may be a mixture of heavy calcium carbonate (heavy carbon) and light calcium carbonate (hard carbon) in a weight ratio of 2: 0.5 to 0.9.

In the present invention, the filler is calcium carbonate (CaCO ₃ ) 17 to 23 parts by weight; 7 to 14 parts by weight of talc; And silicon dioxide (SiO ₂ ) 1 to 3 parts by weight.

In the present invention, the pressure-sensitive adhesive may be one or more selected from the group consisting of polybutene, petroleum resin, and gum rosin.

In the present invention, the petroleum resin may be a C5 (aliphatic) petroleum resin, a C9 (aromatic) petroleum resin, or a mixture thereof.

In the present invention, the non-cured sealant further comprises more than 0 and 3 parts by weight or less of a heat resistance enhancer, and the heat resistance enhancer may be carbon black.

In the present invention, the non-cured sealant further comprises more than 0 and 3 parts by weight or less of a silane coupling agent, and the silane coupling agent may be bistriethox ysilylpropyltetrasulfide (Si 69).

According to another embodiment of the present invention, it relates to a waterproofing material comprising the non-curing sealant of the present invention.

According to another embodiment of the present invention, it relates to an adhesive waterproof sheet comprising the non-curing sealant of the present invention.

In the present invention, the adhesive waterproof sheet includes an asphalt gel layer including the uncured sealant, and may further include at least one of a reinforcing material layer, an asphalt compound layer, and a film layer.

According to another embodiment of the present invention, it relates to a waterproofing method using the non-curing sealing material of the present invention.

In the present invention, the waterproofing method may include a step of installing a waterproof sheet using the non-hardening sealant on the base surface.

In the present invention, the step of installing the waterproof sheet may include applying the uncured sealant to the base surface and then installing a waterproof sheet including an asphalt compound layer.

In the present invention, the step of laying the waterproof sheet may include applying the non-hardening sealant to an asphalt compound layer to obtain an adhesive waterproof sheet; And installing the adhesive waterproof sheet on the base surface.

In the present invention, the step of installing the waterproof sheet may further include installing an adhesive waterproof sheet including an asphalt gel layer including the non-hardening sealant on the base surface.

According to another embodiment of the present invention, it relates to a water leak repair material comprising the non-hardening sealant of the present invention.

The non-cured sealing material provided by the present invention has an adhesive flexible property capable of forming an outer waterproof layer on the outside, and when a waterproof sheet is manufactured by using the non-cured sealing material, the large structure of the structure is particularly low under cryogenic conditions such as -30°C. It can cope with a behavior width, for example, a behavior width of 15 mm, and in addition, there are advantages such as excellent self-healing performance, wet surface adhesion performance, elongation, acid resistance, and flame resistance. In addition, the non-hardened sealing material provided by the present invention may be used for water leakage repair.

The accompanying drawings are for explaining the contents of the present invention in more detail to those skilled in the art, and the technical idea of the present invention is not limited thereto.
1 is a view for explaining the adhesive waterproof sheet according to the present invention.
2 is a view for explaining a waterproof structure installed using the adhesive waterproof sheet according to the present invention.
3 is a process chart for explaining the waterproofing method using the adhesive waterproof sheet according to the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The following examples are presented in order to sufficiently convey the spirit of the present invention to those of ordinary skill in the art to which the present invention pertains. The present invention is not limited only to the embodiments presented herein, but may be embodied in other forms. In the drawings, in order to clarify the present invention, portions not related to the description may be omitted, and the size of components may be slightly exaggerated to aid understanding.

The terminology used in this specification is for referring only to specific embodiments and is not intended to limit the present invention. In addition, the singular forms used herein also include plural forms unless the phrases clearly represent the opposite meaning. In addition, the meaning of'comprising' or'containing' as used herein specifies a specific characteristic, area, integer, step, action, element or component, and other specific characteristic, area, integer, step, action, element, or It does not exclude the addition of ingredients.

In addition, terms used in the present specification are only used to describe exemplary embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present specification, terms such as "comprise", "include", or "have" are intended to designate the existence of a feature, number, step, element, or combination of the implemented features, but one or more other features or It is to be understood that the possibility of the presence or addition of numbers, steps, elements, or combinations thereof is not preliminarily excluded.

The present invention will be described in detail below and exemplify specific embodiments, as various modifications can be made and various forms can be obtained. However, this is not intended to limit the present invention to a specific form disclosed, it should be understood to include all changes, equivalents, and substitutes included in the spirit and scope of the present invention.

According to an embodiment of the present invention, 20 to 50 parts by weight of asphalt; 5 to 15 parts by weight of a modifier; 10 to 20 parts by weight of plasticizer; 25 to 40 parts by weight of a filler; And it relates to a non-cured sealing material containing 5 to 15 parts by weight of an adhesive.

In the uncured sealant of the present invention, the asphalt is the final residue obtained by distilling crude oil in an atmospheric distillation column and then distilling the atmospheric crude oil (AR) under reduced pressure, and it contains a lot of bitumen that is not decomposed. Such, asphalt may be classified into AP-3 and AP-5 as shown in Table 1 below, and in the present invention, the asphalt may use AP-3, AP-5 or a mixture thereof, but preferably AP- May be 5.

Experiment and test items AP-3 AP-5 Penetration, 25℃, 100g, 5 seconds: 0.1mm 80 to 100 60 to 80 Density (15℃) g/cm3 1.000 or more 1.000 or more Flash point, COC: ℃ 260 or more 260 or more Softening point:℃ 42.0 ~ 50.0 44.0 ~ 52.0 Elongation (15℃):cm Over 100 Toluene Soluble Content:% by weight More than 99.9 After thin film heating
Mass change rate:% by weight
Penetration ratio (relative to original intrusion):% 0.6 or less
50 or more 0.6 or less
55 or more Penetration ratio after evaporation:% 110 or less 110 or less

In the uncured sealant of the present invention, the asphalt may be included in an amount of 20 to 50 parts by weight, preferably 30 to 40 parts by weight, and most preferably 35 parts by weight.

The uncured sealant provided by the present invention is shown in Table 3 below, and the modifiers are styrene butadiene styrene block copolymer (SBS), isobutylene isoprene rubber (IR), and styrene butadiene latex. ; SBL) may be one or more selected from the group consisting of.

In the non-cured sealant of the present invention, the "styrene butadiene styrene (SBS)" is a thermoplastic elastomer made of two monomers, styrene and butadiene, and exhibits the properties of plastic and rubber at the same time.

In the non-cured sealing material of the present invention, the styrene butadiene styrene (SBS) is preferably composed by mixing KTR 101, KTR 201, and KTR 401 in a weight ratio of 1: 1: 1 because of excellent adhesion, but is not limited thereto. Here, a comparison table of the KTR 101, KTR 201, and KTR 401 is shown in Table 2 below.

Item KTR-101 KTR-201 KTR-401 rescue Linear Linear Linear shape Porous pellet powder Porous pellet Porous pellet powder Styrene content (wt%) 31.5 31.5 31 Volatile content (wt%) 0.7 0.7 0.7 Ash content (wt%) 0.08 0.08 0.4 Solution viscosity, 25wt% toluene 4,500 1,200 - Tensile strength (kgf/㎠) 200 200 180 Elongation (%) 800 800 680 Tensile stress kgf/㎠
(300% moddulus) 26 40 31 Hardness (shore-A/5sec) 77 71 82 Melt index
(g/10min, 200℃Х5kg) One 6 One Specific gravity (g/cm3) 0.94 0.94 0.94

In the uncured sealant of the present invention, the "isobutylene isoprene rubber (IIR)" is a synthetic rubber obtained by copolymerizing isobutylene with several% of isoprene, and has excellent odor resistance, aging resistance, weather resistance, and electrical properties. In addition, the permeability of various gases is extremely small, and the permeability of air is 1/10 of that of natural rubber.

In the non-curing sealing material of the present invention, the "styrene butadiene latex (SBL)" corresponds to a milky liquid polymer latex having a particle size of 50 to 200 nm prepared by emulsion polymerization using styrene and butadiene as main raw materials.

The styrene butadiene latex (SBL) in the non-curing sealing material of the present invention may be a brand name:'KSL-341' manufactured by Kumho Petrochemical, but is not limited thereto.

In the uncured sealant of the present invention, the modifier may be included in an amount of 5 to 15 parts by weight, preferably 5 to 10 parts by weight, more preferably 8 to 9 parts by weight, and most preferably It may be included in an amount of 8.6 parts by weight. In the present invention, when the content of the modifier is less than 5 parts by weight, it may not be able to perform a sufficient modifying function, and when the content of the modifier exceeds 15 parts by weight, the content of other components of the uncured sealing material is relatively small, so that the purpose of the uncured sealing material of the present invention There may be a problem in that it may hinder the exertion of the function and increase the manufacturing cost.

In the uncured sealant of the present invention, the modifier is styrene butadiene styrene (SBS) 1 to 5 parts by weight; 3 to 7 parts by weight of isobutylene isoprene rubber (IIR); And 1 to 3 parts by weight of styrene butadiene latex (SBL).

In the uncured sealant of the present invention, the styrene butadiene styrene (SBS) may be included in 1 to 5 parts by weight, preferably 2 to 4 parts by weight, more preferably 2 to 3 parts by weight, and most Preferably it may be included in 2.6 parts by weight. In the present invention, when the content of styrene butadiene styrene (SBS) is less than 1 part by weight, it may not be able to perform a sufficient reforming function, and when it is more than 5 parts by weight, low temperature or hydrophilicity may be relatively deteriorated.

In the uncured sealing material of the present invention, the isobutylene isoprene rubber (IIR) is added to ensure excellent low temperature, and may be included in 3 to 7 parts by weight, preferably 4 to 6 parts by weight, and the most Preferably it may be included in 5 parts by weight. In the present invention, when the content of the isobutylene isoprene rubber (IIR) is less than 3 parts by weight, sufficient low-temperature properties may not be secured, and when the content of the isobutylene isoprene rubber (IIR) is more than 7 parts by weight, the modifying function or hydrophilicity may be relatively deteriorated.

In the non-cured sealing material of the present invention, the styrene butadiene latex (SBL) is added to secure hydrophilicity to a moist structure, and may be included in 1 to 3 parts by weight, preferably 1 to 2 parts by weight, and the most Preferably it may be included in 1 part by weight. In the present invention, when the content of the styrene butadiene latex (SBL) is less than 1 part by weight, it may not be possible to secure sufficient hydrophilicity with a wet structure, especially a wet concrete surface, and when it exceeds 3 parts by weight, the modification function or low temperature is relatively It can be degraded.

In the non-cured sealant of the present invention, the plasticizer performs a function of improving the properties of the material, such as changing hardness and viscosity, depending on the application, and it is preferable to use a naphthenic process oil.

In the non-cured sealant of the present invention, the plasticizer may be included in 10 to 20 parts by weight, preferably 10 to 15 parts by weight, more preferably 10 to 13 parts by weight, and most preferably 12 It may be included in parts by weight. In the present invention, when the content of the plasticizer is less than 10 parts by weight, smooth plasticity and viscosity adhesion cannot be obtained, and when it exceeds 20 parts by weight, the performance is maintained, but there is a problem in that the manufacturing cost increases due to the addition of materials.

In the uncured sealant of the present invention, the filler may be at least one selected from the group consisting of _{calcium carbonate (CaCO 3} ), talc, and silicon dioxide (SiO _{2 ).}

In the uncured sealing material of the present invention, the calcium carbonate is a mixture of heavy calcium carbonate (heavy carbon) and light calcium carbonate (hard carbon) in a weight ratio of 2: 0.5 to 0.9, preferably 2: 0.7 to 0.8, and the total specific gravity It is preferable that the flow down phenomenon can be controlled by lowering, but is not limited thereto. In the present invention, when the ratio of the hard calcium carbonate is higher than the weight ratio, the total specific gravity of the filler increases, so that the flow of the asphalt gel layer cannot be sufficiently prevented, and when the ratio of the heavy calcium carbonate is higher than the weight ratio, the viscosity of the asphalt gel layer is It increases, and there is a problem that the adhesive force decreases.

In the uncured sealing material of the present invention, the filler may be included in 25 to 40 parts by weight, preferably 30 to 40 parts by weight, more preferably 30 to 35 parts by weight, most preferably 33.5 parts by weight It can be included as a wealth. In the present invention, when the content of the filler is less than 25 parts by weight, a sufficient filling function may not be achieved, so that the non-cured sealant may flow down, and when the content of the filler exceeds 40 parts by weight, the manufacturing cost may increase due to the addition of materials. I can.

In the non-cured sealing material of the present invention, the filler is calcium carbonate (CaCO ₃ ) 17 to 23 parts by weight; 7 to 14 parts by weight of talc; And silicon dioxide (SiO ₂ ) 1 to 3 parts by weight.

In the non-cured sealant of the present invention, the calcium carbonate (CaCO ₃ ) may be included in 17 to 23 parts by weight, preferably 18 to 22 parts by weight, and most preferably 20 parts by weight. In the present invention, when the content of calcium carbonate is less than 17 parts by weight, a sufficient filling function may not be achieved, so that the non-cured sealant may flow down, and when it exceeds 23 parts by weight, flexibility or hydrophilicity may be relatively deteriorated. have.

In the non-cured sealing material of the present invention, the talc is included to improve the flowability of the non-cured sealing material, and may be included in 7 to 14 parts by weight, preferably 9 to 13 parts by weight, most preferably It may be included in 11 parts by weight. In the present invention, when the content of talc is less than 7 parts by weight, the flowability of the uncured sealant may be degraded, and when it exceeds 14 parts by weight, sufficient filling effect cannot be secured or hydrophilicity to a moist structure, in particular, a moist concrete surface. It can be relatively degraded.

In the uncured sealing material of the present invention, the silicon dioxide (SiO ₂ ) may be included in 1 to 3 parts by weight, preferably 2 to 3 parts by weight, and most preferably 2.5 parts by weight. In the present invention, when the content of silicon dioxide is less than 1 part by weight, the hydrophilicity of the wet structure of the uncured sealant, especially the wet concrete surface may be degraded, and if it exceeds 3 parts by weight, sufficient filling effect may not be secured or flexibility is It can be relatively degraded.

In the non-cured sealing material of the present invention, the pressure-sensitive adhesive has a function of increasing the adhesion of the surface and maintaining the adhesion for a long time, including polybutene; Petroleum resin; And gum rosin (gum rosin); may be one or more selected from the group consisting of.

In the non-curing sealant of the present invention, the petroleum resin may be a C5 (aliphatic) petroleum resin, a C9 (aromatic) petroleum resin, or a mixture thereof, but the C5 (aliphatic) petroleum resin and the C9 (aromatic) )-Based petroleum resins have similar functionality, so it is advantageous in terms of economy to use the C5 (aliphatic) petroleum resin.

In the non-cured sealant of the present invention, the adhesive may be included in 5 to 15 parts by weight, preferably 7 to 13 parts by weight, more preferably 7 to 11 parts by weight, most preferably 9.6 parts by weight It can be included as a wealth. In the present invention, when the content of the pressure-sensitive adhesive is less than 5 parts by weight, smooth adhesiveness and long-term adhesiveness cannot be maintained, and when it exceeds 15 parts by weight, the adhesiveness is maintained, but the manufacturing cost may increase due to the addition of materials.

In the non-cured sealing material of the present invention, the pressure-sensitive adhesive is 3 to 7 parts by weight of polybutene; 1 to 5 parts by weight of petroleum resin; And it may be included in 1 to 3 parts by weight of gum rosin.

In the non-cured sealing material of the present invention, the polybutene may serve as an additional plasticizer and improve flexibility. In the present invention, the polybutene may be included in 3 to 7 parts by weight, preferably 4 to 6 parts by weight, and most preferably 5 parts by weight. In the present invention, when the content of the polybutene is less than 3 parts by weight, the flexibility may be lowered, and when the content is more than 7 parts by weight, the adhesiveness may be lowered.

In the uncured sealant of the present invention, the petroleum resin may be included in 1 to 5 parts by weight, preferably 2 to 4 parts by weight, and most preferably 3 parts by weight. In the present invention, when the content of the petroleum resin is less than 1 part by weight, sufficient adhesiveness may not be secured, and when it exceeds 5 parts by weight, flexibility may be deteriorated.

In the uncured sealing material of the present invention, the gum rosin may be included in 1 to 3 parts by weight, preferably 1 to 2 parts by weight, and most preferably 1.3 parts by weight. In the present invention, when the content of gum rosin is less than 1 part by weight, sufficient adhesiveness may not be secured, and when it exceeds 3 parts by weight, flexibility may be deteriorated.

The non-cured sealing material of the present invention may further include a heat resistance enhancing agent, and the heat resistance enhancing agent increases the heat resistance of the non-cured sealing material, and when installed on a vertical wall surface, it prevents flowing down even in a high temperature environment such as summer It enables to overcome the limitations of construction, and plays a similar role as a filler, so that even if added in some amount, the effect of preventing the flow of the asphalt gel layer can be increased.

In the non-cured sealing material of the present invention, the heat resistance enhancer may be carbon black.

In the non-cured sealing material of the present invention, the heat resistance enhancer may be included in an amount greater than 0 and 3 parts by weight or less, preferably 0.5 to 3 parts by weight, more preferably 0.5 to 2 parts by weight, and most preferably May be included in 1 part by weight. In the present invention, when the content of the heat resistance enhancer is more than 3 parts by weight, the flow prevention function is maintained due to the improvement of heat resistance, but there is a problem that affects other components.

The uncured sealing material of the present invention may further include a silane coupling agent so that silicon dioxide used as a filler can exhibit an effective hydrophilic improvement effect.

Bistriethox ysilylpropyltetrasulfide (Si 69) may be used as the silane coupling agent in the uncured sealant of the present invention, but is not limited thereto.

In the non-cured sealing material of the present invention, the silane coupling agent may be included in an amount greater than 0 and 3 parts by weight or less, preferably 0.1 to 3 parts by weight, more preferably 0.1 to 2 parts by weight, and most preferably It may be included in 0.6 parts by weight. In the present invention, when the content of the silane coupling agent is more than 3 parts by weight, the hydrophilicity improvement effect can be secured, but as the content of other components is relatively lowered, the desired effect cannot be sufficiently achieved as the non-cured sealing material of the present invention. I can.

The uncured sealant provided by the present invention may have a solid content of 80% or more, preferably 85% or more, more preferably 95% or more, and even more preferably 98% or more, but is not limited thereto.

The uncured sealant of the present invention may satisfy at least one of the quality standards of Korea and the group standard of China, preferably both of the above, but is not limited thereto.

division Korean quality standards
(LH professional specification 42534 adhesive type
Synthetic rubber composite waterproof sheet) Chinese collective standard quality standards
(JC/T 2428-2017 Non-hardening bitumen waterproofing material) Evaluation item Performance criteria Evaluation item Performance criteria Non-hardening sealant
Quality standards Solid content (%) 85 or more Ignition temperature (℃) More than 180 Viscosity (cPs) 2,000,000 or more Solid content (%) 98 or more Permeability resistance performance Not going to be pitched Adhesion performance Dry cotton 100% cohesive destruction Wet cotton Wet surface adhesion performance The base plate of the test specimen should not come off within 60 seconds. Elongation performance (mm) 15 or more Structure behavior response performance Not going to be pitched Low temperature flexibility Will not break Water loss resistance performance Mass change rate
Within -0.1% Heat resistance No runoff or loss Chemical resistance Hydrochloric acid Mass change rate
Within -0.1% Heat aging Elongation performance (mm) 15 or more Low temperature flexibility Will not break nitric acid Acid resistance
(Sulfuric acid) Exterior No problem Elongation performance (mm) 15 or more Mass change rate (%) ± 2.0 Sulfuric acid Acid resistance
(alkali) Exterior No problem Elongation performance (mm) 15 or more Mass change rate (%) ± 2.0 Sodium chloride Flame resistance Exterior No problem Elongation performance (mm) 15 or more Mass change rate (%) ± 2.0 alkali Self-healing performance Not going to be pitched Temperature-dependent performance (heat/cold resistance) Not going to be pitched Oil spreading performance / length 2 or less - Sagging due to stress (%) No treatment 35 or less Heat aging Water permeability Not going to be pitched

According to another embodiment of the present invention, it relates to a waterproofing material including a non-hardening sealant provided by the present invention.

The waterproofing material of the present invention may be a composite waterproofing material further including at least one sheet material, and the uncured sealing material may be laminated on the sheet material.

The waterproofing material including the non-hardening sealant provided by the present invention can cope with a large movement width of the structure, for example, a movement width of 15 mm under cryogenic conditions such as -30°C, and in addition, self-healing performance or adhesion to a wet surface It has excellent performance, elongation, acid resistance and salt resistance.

According to another embodiment of the present invention, it relates to an adhesive waterproof sheet comprising a non-curing sealant provided by the present invention.

The adhesive waterproof sheet of the present invention may include an asphalt gel layer comprising the non-hardening sealant of the present invention.

The adhesive waterproof sheet of the present invention may further include at least one of a reinforcing material layer, an asphalt compound layer, and a film layer.

The adhesive waterproof sheet of the present invention comprises an asphalt gel layer comprising the non-hardening sealant of the present invention; And an asphalt compound layer.

The adhesive waterproof sheet of the present invention comprises an asphalt gel layer comprising the non-hardening sealant of the present invention; And an asphalt compound layer, and if necessary, may include at least one of a reinforcing material layer and a film layer.

1 is a view for explaining the adhesive waterproof sheet according to an example of the present invention, Figure 2 is a view for explaining a waterproof structure installed using the adhesive waterproof sheet according to an example of the present invention. Hereinafter, with reference to FIGS. 1 and 2, the adhesive waterproof sheet according to the present invention will be described in detail.

An adhesive waterproof sheet according to an example of the present invention includes an asphalt gel layer 10 comprising a non-hardening sealant of the present invention; Reinforcing material layer 20; Asphalt compound layer 30; And a film layer 40; may be included in order.

In the adhesive waterproof sheet of the present invention, the asphalt gel layer 10 including the non-cured sealant of the present invention can be constructed on a vertical wall by enhancing heat resistance, reinforcing impact resistance, and improving adhesive performance, so that construction limitations can be overcome.

In the adhesive waterproof sheet of the present invention, the reinforcing material layer 20 may be disposed on the asphalt gel layer to improve the strength of the adhesive waterproof sheet. In the present invention, the reinforcing material layer 20 is positioned between the asphalt gel layer 10 and the asphalt compound layer 30 to increase the bonding force between materials, and improves toughness to reinforce shape retention.

The composition of the reinforcing material layer 20 in the adhesive waterproof sheet of the present invention is not particularly limited, but may be made of, for example, a nonwoven fabric or a mesh net.

In the adhesive waterproof sheet of the present invention, the asphalt compound layer 30 may be disposed on the reinforcing material layer 20 to improve the waterproof effect. In the present invention, the asphalt compound layer 30 performs a function of exhibiting adhesive performance and waterproof performance.

In the adhesive waterproof sheet of the present invention, the asphalt compound layer 30 may be formed of an asphalt compound in consideration of affinity with asphalt, which is a main component of the asphalt gel layer 10.

In the adhesive waterproof sheet of the present invention, the film layer 40 is disposed on the asphalt compound layer 30, and exhibits a waterproof performance along with a function of protecting the asphalt compound layer 30, and the asphalt compound Integration is made by the adhesive force of the layer 30 so that the film layer 40 is firmly fixed to the asphalt compound layer 30.

The composition of the film layer 40 in the adhesive waterproof sheet of the present invention is not particularly limited, but may be, for example, a synthetic resin film, and preferably made of PVC, PP or PE, etc. have.

As shown in FIG. 2, the waterproof sheet of the present invention may further include a compound sheet 50 for protecting the adhesive waterproof sheet of the present invention by being applied on the asphalt waterproof sheet.

In the adhesive waterproof sheet of the present invention, the compound sheet 50 may be composed of an asphalt compound.

In addition, in the adhesive waterproof sheet of the present invention, the fact that the silica sand is applied on the compound sheet 50 can prevent the adhesive waterproof sheet of the present invention, which is applied to the base surface by an exposure method, from deteriorating by ultraviolet rays. .

According to another embodiment of the present invention, it relates to a waterproofing method using the non-hardening sealant provided by the present invention.

The waterproofing method of the present invention may include the step of installing a waterproof sheet using the non-hardening sealant provided by the present invention on the base surface.

3 is a process chart for explaining a waterproofing method using an adhesive waterproof sheet according to an example of the present invention. Hereinafter, with reference to Figure 3, it will be described in detail with respect to the waterproofing method according to the present invention.

The waterproofing method of the present invention comprises the step of arranging the background surface (S1); Waterproof sheet installation step (S2); Joint processing step (S3); And forming a protective layer (S4).

In the waterproofing method of the present invention, the surface cleaning step (S1) may be performed to maintain flatness by removing the latencies or other foreign substances remaining on the base surface, and at this time, the latencies or foreign substances are removed using high-pressure water. However, it is not limited thereto. If necessary, the step of arranging the background surface may be omitted.

In the waterproofing method of the present invention, the waterproofing sheet laying step (S2) includes applying the non-hardening sealant of the present invention to the ground surface arranged by the ground surface arranging step (S1), and then laying a waterproof sheet including an asphalt compound layer. It may include the step of. Here, the waterproof sheet may further include at least one of a reinforcing material layer and a film layer, preferably a reinforcing material layer, an asphalt packing layer, and a film layer, and more preferably the reinforcing material layer and asphalt curing layer. It may be included in the order of a pound layer and a film layer.

In the waterproofing method of the present invention, the waterproof sheet laying step (S2) includes applying the non-hardening sealant of the present invention to an asphalt compound layer to obtain an adhesive waterproof sheet; And it may include the step of laying the adhesive waterproof sheet on the ground surface arranged by the ground surface tidying step (S1).

In the present invention, the step of obtaining the adhesive waterproof sheet may include applying the uncured sealant to a reinforcing material layer, and laminating the reinforcing material layer on the asphalt compound layer, or on the asphalt compound layer. It can be carried out by applying the non-hardened sealing material to the reinforcing material layer on the layered reinforcing material layer.

In the present invention, the step of obtaining the adhesive waterproof sheet may further include laminating a film layer on the other back surface of the asphalt compound layer.

In addition, the waterproof sheet laying step (S2) in the waterproofing method of the present invention includes an asphalt gel layer comprising an uncured sealant provided by the present invention on the base surface arranged by the base surface arrangement step (S1). It may include the step of laying the waterproof sheet. At this time, the adhesive waterproof sheet may further include at least one of a reinforcing material layer, an asphalt compound layer, and a film layer, and preferably an asphalt gel layer comprising the non-hardening sealant of the present invention; And an asphalt compound layer, more preferably a reinforcing material layer between the asphalt gel layer and the asphalt compound layer, and a film layer on the other back surface of the asphalt compound layer.

In the waterproofing method of the present invention, in the waterproofing sheet installation step (S2), the non-cured sealing material or the waterproofing sheet may be installed by treating the joint in an overlapping joint method. Here, the joint portion may be formed with a 5 ~ 15 cm cum needle joint.

In the waterproofing method of the present invention, the joint treatment step (S3) is performed so that the waterproofing performance is maintained at the joint of the waterproof sheet when the installation of the waterproof sheet on the base surface is completed through the waterproof sheet installation step (S2). I can. In detail, in the present invention, if the waterproof sheet is laid on the base surface in an overlapping joint method during the waterproof sheet installation step (S2), a reinforcing seal is adhered to the joint of the waterproof sheet during the joint treatment step (S3). So that the waterproof performance is maintained at the joint.

In the waterproofing method of the present invention, any of the reinforcing seals may be used as long as they are reinforced to maintain the waterproof performance of the joint of the waterproof sheet, but may be, for example, a waterproof tape.

In addition, in the waterproofing method of the present invention, the reinforcing seal may have a width wider than the width of the joint (5 to 15 cm), for example, 10 to 20 cm, and may be adhered and fixed to the joint so that the joint is covered. .

In the waterproofing method of the present invention, in the step of forming the protective layer (S4), when the joint treatment of the waterproof sheet is completed through the joint treatment step (S3), a protective layer may be formed to protect the waterproof sheet.

In the waterproofing method of the present invention, the protective layer may be formed of an asphalt compound sheet containing silica or a coating layer in which a coating material is applied to a certain thickness, or when acting on non-exposure, the protective layer is a mortar applied on the waterproof sheet. It may be formed as a mortar layer made of, but is not limited thereto.

According to another embodiment of the present invention, it relates to a water leakage repair material including the non-hardening sealant provided by the present invention.

In structures, if watertightness is insufficient for roof slabs, roofs, basements of buildings, or various fluid storage tanks, rainwater or groundwater may seep, which not only lowers the bonding strength of the concrete itself, but also reduces the volume change of water due to temperature changes. As a result, cracks are generated in the concrete, reducing the life of the building. Accordingly, waterproofing to prevent the inflow of moisture such as rainwater or groundwater through cracks in concrete is very important.In addition, repair of cracks and joint joints leaked from concrete underground structures, roofs of buildings, exterior walls, floors, etc. Leakage repair material is used for this purpose.

The foregoing description of the present application is for illustrative purposes only, and those of ordinary skill in the art to which the present application pertains will be able to understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present application. Therefore, it should be understood that the embodiments described above are illustrative in all respects and are not limiting. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as being distributed may also be implemented in a combined form.

Example

[Examples 1 to 5 and Comparative Examples 1 to 5] Preparation of adhesive waterproof sheet

An adhesive waterproof sheet was produced by extrusion molding a non-cured sealant with the composition shown in Table 4 below.

Furtherance Example 1 Example 2 Example 3 Example 4 Example 5 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 asphalt AP-5 35 30 32 36 35 35.6 35.6 36 37.5 45 Modifier SBS 2.6 3 3.5 2 4 7 5 2.6 2.6 2.6 IIR
(Butyl rubber) 5.0 6 4 7 3 0 2 5 5 5 SBL 1.0 1.5 2 1.3 One One One 0 One One Plasticizer process
oil 12 15 13 11 14 12 12 12 12 12 filling Calcium carbonate 20 21 18 19 22 20 20 20 20 20 Talc 11 10 11.5 10 9 11 11 11 11 6 SiO ₂ 2.5 2 3 2.4 3 2.5 2.5 2.5 0 2.5 adhesive Polybutene 5 6 5 5 4 5 5 5 5 0 C5 3 2 4 3 2 3 3 3 3 3 Gum rosin 1.3 1.6 2 1.3 One 1.3 1.3 1.3 1.3 1.3 Heat resistance enhancer Carbon black One One One One One One One One One One Silane coupling agent Si69 0.6 0.9 One One One 0.6 0.6 0.6 0.6 0.6

[Experimental Example 1] Evaluation of response to low temperature behavior

Behavioral widths of 2.5 mm, 5.0 mm, 7.5 mm, 10.0 mm, and 15.0 mm (within tolerance ± 0.2 mm) were sequentially applied and tested. At this time, a displacement meter (LVDT), etc., is installed and measured so that the movement can be made in the center of the upper and lower test specimens for which the designated movement width is manufactured. A total of three adhesive waterproof sheet test specimens were tested according to the test conditions (methods) in Table 5 according to the respective behavior widths, and when leakage occurred, the test was stopped and the finally passed behavior width was recorded. The results are shown in Table 6 below.

division Condition Temperature -Experiment at a low temperature of 30 ℃ motion Width: 2.5 mm, 5.0 mm, 7.5 mm, 10.0 mm, 15.0 mm (within tolerance ±0.2 mm) Speed: 50 mm/min
Number of times: 300 cycle tests according to each movement width evaluation Observation of water leakage (recording the behavior width, number of movements, and leakage path when water leakage occurs)

division Width of final traversed motion Example 1 15.0 mm Example 2 15.0 mm Example 3 15.0 mm Example 4 15.0 mm Example 5 15.0 mm Comparative Example 1 5.0 mm Comparative Example 2 7.5 mm Comparative Example 3 7.5 mm Comparative Example 4 10.0 mm Comparative Example 5 7.5 mm

As shown in Table 6, the adhesive waterproof sheet test specimens of Examples 1 to 5 exhibit excellent behavioral response of 15.0 mm at a low temperature of -30°C, whereas the adhesive waterproof sheet test specimens of Comparative Examples 1 to 5, respectively It was confirmed that the behavioral width in which the leakage occurred was only 5.0 mm to 10.0 mm, and the behavior correspondence was remarkably deteriorated.

[Experimental Example 2] Evaluation of adhesive strength

The waterproof sheet prepared in Examples 1 to 5 and Comparative Examples 1 to 5 was attached to a concrete specimen to perform an adhesive strength evaluation experiment. At this time, the concrete specimen was prepared by preparing a specimen in a dry state and a specimen in a wet state of 95% moisture content, respectively, and subjected to a 25° C. Peel-out test, and the results are shown in Table 7 below.

division Adhesive strength (N/mm) dry Wet Example 1 2.7 1.8 Example 2 2.6 1.7 Example 3 2.3 1.4 Example 4 2.4 1.5 Example 5 2.3 1.7 Comparative Example 1 2.1 1.3 Comparative Example 2 2.2 1.2 Comparative Example 3 1.8 1.1 Comparative Example 4 1.9 1.3 Comparative Example 5 1.7 1.2

As shown in Table 7, the adhesive waterproof sheets of Examples 1 to 5 showed high adhesive strength to both dry and wet concrete specimens, whereas the adhesive waterproof sheets of Comparative Examples 1 to 5 were in dry and wet states. The adhesive strength was low for all concrete, and the adhesive strength for the wet concrete specimen was very low.

The scope of the present application is indicated by the claims to be described later rather than the detailed description, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present application.

10: asphalt gel layer 20: reinforcing material layer
30: asphalt compound layer 40: film layer
50: compound sheet

Claims (21)

20 to 50 parts by weight of asphalt; 5 to 15 parts by weight of a modifier including 1 to 5 parts by weight of styrene butadiene styrene (SBS), 3 to 7 parts by weight of isobutylene isoprene rubber (IIR), and 1 to 3 parts by weight of styrene butadiene latex (SBL); 10 to 20 parts by weight of plasticizer; 25 to 40 parts by weight of a filler including 17 to 23 parts by weight of calcium carbonate (CaCO ₃ ), 7 to 14 parts by weight of talc and _{1 to 3 parts by weight of silicon dioxide (SiO 2 );} And 3 to 7 parts by weight of polybutene, 1 to 5 parts by weight of petroleum resin, and 5 to 15 parts by weight of a pressure-sensitive adhesive including 1 to 3 parts by weight of gum rosin, non-cured sealant. The method of claim 1,
The asphalt is AP-3, AP-5, or a mixture thereof, a non-hardened sealant. delete delete The method of claim 1,
The plasticizer is a naphthenic process oil, the non-hardened sealing material. delete The method of claim 1,
The calcium carbonate is a mixture of heavy calcium carbonate (heavy carbon) and light calcium carbonate (hard carbon) in a weight ratio of 2: 0.5 to 0.9. delete delete The method of claim 1,
The petroleum resin is a C5 (aliphatic) petroleum resin, a C9 (aromatic) petroleum resin, or a mixture thereof, a non-cured sealant. The method of claim 1,
The non-cured sealing material further comprises more than 0 and 3 parts by weight or less of a heat resistance enhancing agent, and the heat resistance enhancing agent is carbon black. The method of claim 1,
The non-cured sealing material further comprises more than 0 and 3 parts by weight or less of a silane coupling agent,
The silane coupling agent is bistriethox ysilylpropyltetrasulfide (Si 69), a non-cured sealant. A waterproof material comprising the non-hardening sealant of any one of claims 1, 2, 5, 7, and 10 to 12. An adhesive waterproof sheet comprising the non-curing sealing material of any one of claims 1, 2, 5, 7, and 10 to 12. The method of claim 14,
The waterproof sheet includes an asphalt gel layer including the non-hardening sealant, and further includes at least one of a reinforcing material layer, an asphalt compound layer, and a film layer. A waterproofing method using the non-hardening sealing material of any one of claims 1, 2, 5, 7, and 10 to 12. The method of claim 16,
The waterproofing method includes the step of installing a waterproof sheet using the non-hardening sealant on a base surface. The method of claim 17,
The step of installing the waterproof sheet includes the step of installing a waterproof sheet including an asphalt compound layer after applying the uncured sealant to the base surface. The method of claim 17,
The step of laying the waterproof sheet may include applying the non-hardening sealant to an asphalt compound layer to obtain an adhesive waterproof sheet; And installing the adhesive waterproof sheet on the base surface. The method of claim 17,
The waterproofing sheet laying step further comprises laying an adhesive waterproof sheet comprising an asphalt gel layer containing the non-hardening sealant on the base surface. A water leakage repair material comprising the non-hardening sealant of any one of claims 1, 2, 5, 7, and 10 to 12.

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