KR102271005B1 - Self-adhesion type asphalt waterproofing sheet manufacturing method and complex waterproof method using thereof - Google Patents

Abstract

The present invention relates to a method for manufacturing a self-adhesive waterproofing sheet including rubberized asphalt. The method includes the steps of: mixing 100 parts by weight of N-phenylhydroxylamine with 60-80 parts by weight of cyclopentadiene, 50-70 parts by weight of 1,4-polyisoprene, 40-60 parts by weight of dimethyl terephthalate, 30-50 parts by weight of straight asphalt, 20-40 parts by weight of blown asphalt, 10-30 parts by weight of 2-bromo-4-nitrotoluene, 3-5 parts by weight of cyclohexane carboxylic acid, and 2-4 parts by weigh of talc to prepare an asphalt compound composition; and applying the asphalt compound composition to one surface of a PET film.

Description

Manufacturing method of rubberized asphalt self-adhesive waterproofing sheet and triple composite waterproofing construction method using same {Self-adhesion type asphalt waterproofing sheet manufacturing method and complex waterproofing method using thereof}

The present invention relates to a method for manufacturing a rubberized asphalt self-adhesive waterproofing sheet and a triple composite waterproofing construction method using the same, and more particularly, to N-phenylhydroxylamine, cyclopentadiene, 1,4-polyisoprene, dimethyl terephthalate , straight asphalt, blown asphalt, 2-bromo-4-nitrotoluene, cyclohexanecarboxylic acid and talc are mixed to prepare a rubberized asphalt compound composition, and the rubberized asphalt compound composition is applied to one surface of a PET film. Thus, it relates to a method of manufacturing a rubberized asphalt self-adhesive waterproofing sheet capable of manufacturing a rubberized asphalt self-adhesive waterproofing sheet with excellent physical performance and a triple composite waterproofing construction method using the same.

In general, when rainwater or groundwater penetrates into civil structures such as the roof of a building, the upper part of an underground parking lot, an underground outer wall, an underpass, and a common pit, the bonding strength of concrete materials is lowered and void cracks occur due to temperature changes. In addition to shortening the life of the concrete structure, waterproofing due to the risk of collapse in some cases is a very important factor in concrete structures.

This waterproofing construction has the meaning of not only blocking the water flowing into the living space from rainwater or groundwater, but also increasing the durability of the structure. Therefore, a waterproofing material having properties capable of suppressing the expansion of cracks in the structure by absorbing the perfect waterproofing, load and impact of the concrete structure is required, and the development of waterproofing methods and materials is developing day by day through continuous research.

The conventional asphalt-based waterproofing sheet is a nonwoven fabric, a woven fabric, and a glass fiber base, mixed with asphalt as the main material and a filler, and has a thickness of 2.5-3.5 mm, a length of 10 m, and a width of 1 m, with a unit weight of 35 kg/10 m 2 / weight per roll. After arranging the surface, applying an asphalt primer, heating with an LPG torch, and melting the asphalt-based waterproofing sheet while performing compression bonding, there are problems in the following materials and construction.

First, the conventional asphalt waterproofing sheet is very hard at room temperature and has no cold resistance, and especially at a low temperature of -5 ° C, there is no flexibility at all, so the substrate and the adhesive layer are separated, and the adhesive layer is broken, When the waterproof adhesive layer may break.

In addition, since the conventional asphalt waterproofing sheet must first apply a primer of an oil-based or water-based diluent to the base surface of the structure, air pollution occurs due to volatilization of the organic solvent, and the water-based solvent is diluted in water, causing water pollution. .

In addition, since the conventional asphalt waterproofing sheet attaches the object while melting it by heating and pressing with an LPG torch, it is difficult to completely integrate the waterproofing sheet with the base depending on the smoothness of the base, resulting in a lifting phenomenon.

In addition, the conventional asphalt waterproofing sheet is a manufacturing method of impregnating and coating asphalt on a woven or nonwoven fabric, which is a substrate, and does not have a mutual bonding force between the substrate and the asphalt waterproofing material, the asphalt waterproofing agent causes layer separation, and there is no adhesive elongation at low temperature. Adhesive breakage occurs during waterproofing work on the surface, and when the base surface structure expands or contracts, the structure cracks, and the waterproofing function may be lost due to the breakage of the adhesive.

In addition, the conventional asphalt waterproofing sheet must use a sheet adhesion aid primer on the base surface for construction, and when attaching the sheet, it must be heated with an LPG torch and then melted and adhered before it cools down, and the heating method is not constant for each part, so the deformation of the sheet The degree of adhesion is different, the adhesion is not constant, and the moisture contained in the concrete surface is collected during heating, which causes a lifting phenomenon in each part, making it impossible to perform a perfect and consistent adhesion construction.

In addition, the adhesive of the conventional asphalt waterproofing sheet is broken or damaged and separated from the substrate due to the intrinsic property of asphalt being hardened at a low temperature of -3°C as a main material. Also, due to lack of flexibility, the waterproof sheet may be damaged during construction.

That is, the conventional asphalt waterproofing sheet has a problem in that durability is lowered due to poor physical performance.

(Patent Document 0001) Korean Patent 10-0969299

Therefore, an object of the present invention is N-phenylhydroxylamine, cyclopentadiene, 1,4-polyisoprene, dimethyl terephthalate, straight asphalt, blown asphalt, 2-bromo-4-nitrotoluene, cyclohexanecarboxylic acid and talc to prepare a rubberized asphalt compound composition and apply the rubberized asphalt compound composition to one surface of a PET film to produce a rubberized asphalt self-adhesive waterproofing sheet with excellent physical performance. To provide a method for manufacturing a sheet and a triple composite waterproof construction method using the same.

On the other hand, the object of the present invention is not limited to the above-mentioned objects, and other objects not mentioned will be clearly understood by those skilled in the art from the following description.

According to the present invention, 100 parts by weight of N-phenylhydroxylamine, 60-80 parts by weight of cyclopentadiene, 50-70 parts by weight of 1,4-polyisoprene, 40-60 parts by weight of dimethyl terephthalate, 30-50 parts by weight of straight asphalt Parts by weight, 20-40 parts by weight of blown asphalt, 10-30 parts by weight of 2-bromo-4-nitrotoluene, 3-5 parts by weight of cyclohexanecarboxylic acid and 2-4 parts by weight of talc are mixed to form an asphalt compound composition manufacturing step; There is provided a rubberized asphalt self-adhesive waterproofing sheet manufacturing method comprising the step of applying the asphalt compound composition to one surface of a PET film.

In addition, according to the present invention, comprising the rubberized asphalt self-adhesive waterproofing sheet as described above, the step of applying a primer to the surface of the concrete layer after pretreatment; attaching the waterproof sheet to the surface of the concrete layer on which the primer is applied; There is provided a triple composite waterproofing construction method using a rubberized asphalt self-adhesive waterproofing sheet comprising the step of applying and reinforcing polyurea at the joint portion of the waterproofing sheet.

Therefore, according to the present invention, N-phenylhydroxylamine, cyclopentadiene, 1,4-polyisoprene, dimethyl terephthalate, straight asphalt, blown asphalt, 2-bromo-4-nitrotoluene, cyclohexane carboxylic acid and talc to prepare a rubberized asphalt compound composition and apply the rubberized asphalt compound composition to one surface of a PET film to produce a rubberized asphalt self-adhesive waterproofing sheet with excellent physical performance. It is possible to provide a method for manufacturing a sheet and a composite waterproofing construction method using the same.

On the other hand, the effects of the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

Hereinafter, embodiments of the present invention will be described in detail.

First, the rubberized asphalt self-adhesive waterproofing sheet according to an embodiment of the present invention is configured by coating an asphalt compound composition on one surface of a PET film.

Here, the asphalt compound composition is N-phenylhydroxylamine, cyclopentadiene, 1,4-polyisoprene, dimethyl terephthalate, straight asphalt, blown asphalt, 2-bromo-4-nitrotoluene, cyclohexane carboxylic It is composed of a mixture of acid and talc.

More preferably, the asphalt compound composition comprises 100 parts by weight of N-phenylhydroxylamine, 60-80 parts by weight of cyclopentadiene, 50-70 parts by weight of 1,4-polyisoprene, 40-60 parts by weight of dimethyl terephthalate, 30-50 parts by weight of straight asphalt, 20-40 parts by weight of blown asphalt, 10-30 parts by weight of 2-bromo-4-nitrotoluene, 3-5 parts by weight of cyclohexanecarboxylic acid and 2-4 parts by weight of talc are mixed to be manufactured

On the other hand, the rubberized asphalt self-adhesive waterproofing sheet manufacturing method according to an embodiment of the present invention includes 60-80 parts by weight of cyclopentadiene and 50-70 parts by weight of 1,4-polyisoprene in 100 parts by weight of N-phenylhydroxylamine. , dimethyl terephthalate 40-60 parts by weight, straight asphalt 30-50 parts by weight, blown asphalt 20-40 parts by weight, 2-bromo-4-nitrotoluene 10-30 parts by weight, cyclohexanecarboxylic acid 3-5 It includes a step of preparing an asphalt compound composition by mixing 2-4 parts by weight of talc and a step of preparing the asphalt compound composition, and applying the asphalt compound composition to one surface of a PET film.

Here, the asphalt compound composition provides an adhesive waterproof layer on one surface of the PET film so that the coating film function is improved when the lower surface of the PET film is formed on the upper surface of the concrete layer.

N-phenylhydroxylamine provides adhesion, water permeability control, chloride ion permeation resistance, and coating film functions by forming a urethane bond when stirred with the compositions when preparing an asphalt compound composition.

Cyclopentadiene, when preparing an asphalt compound composition, provides a surface activity and penetration function to improve the adhesion of the compositions, and provides waterproof and abrasion resistance during construction, thereby lowering the water permeability and absorption ratio, and provides newness and adhesion.

Here, cyclopentadiene is added in 60-80 parts by weight based on 100 parts by weight of N-phenylhydroxylamine. When more than 80 parts by weight is added, the mixing rate of the compositions is lowered due to high chemical resistance, and 60 parts by weight are added. When added less than part, there is a problem in that adhesion and coating functions are deteriorated and even durability is reduced.

1,4-polyisoprene, when preparing an asphalt compound composition, improves the stirring efficiency of the composition.

Here, 50-70 parts by weight of 1,4-polyisoprene is added based on 100 parts by weight of N-phenylhydroxylamine. When more than 70 parts by weight is added, the distribution of particle sizes during dispersion of the compositions increases. Rather, the stirrability is lowered, and when less than 50 parts by weight is added, there is a problem in that the dispersion of the particle size during dispersion is reduced and the stirrability is lowered. Therefore, it is preferable to have the limited parts by weight as described above.

Dimethyl terephthalate provides an adsorption and adhesion function of the composition when preparing an asphalt compound composition.

Here, 40-60 parts by weight of dimethyl terephthalate is added based on 100 parts by weight of N-phenylhydroxylamine, but when more than 60 parts by weight is added, the viscosity becomes too large, so that the compositions self-permeate when adhesively penetrates the substrate. Since the leveling is not performed well, the waterproof sheet cannot be constructed flat, and when less than 40 parts by weight is added, the adhesive strength with the substrate is lowered and there is a problem that a lifting phenomenon occurs. it's good

Straight asphalt is prepared by a method such as reduced pressure, oil thickening or steam oil increase in order to suppress the change of asphalt by heat during the preparation of the asphalt compound composition, and has a relatively low softening point and provides high extensibility, adhesion and waterproof properties.

Here, 30-50 parts by weight of the straight asphalt is added based on 100 parts by weight of N-phenylhydroxylamine. When added more than 50 parts by weight, the extensibility and adhesiveness are too increased, so that the usability in attaching the waterproof sheet decreases. And, when less than 30 parts by weight is added, the elasticity of the waterproof sheet is lowered, and there are problems such as inconvenient attachment of the waterproof sheet to the bent part, so it is preferable to have the limited weight part as described above.

Brown asphalt is made of asphalt with high elasticity made by oxidative polymerization by blowing air into petroleum asphalt. Compared to straight asphalt, the content of asphaltene is less and the content of petroleum (aluminum rolene) is less, so it has heat resistance and plasticity. It is large, has strong impact resistance, and has little temperature sensitivity. In addition, it has excellent elasticity, impact resistance, waterproofness, moisture-proof property, rust-preventive property, waterproofness and electrical insulation, and has a property with little denaturation.

Here, 20-40 parts by weight of the blown asphalt is added based on 100 parts by weight of N-phenylhydroxylamine. When added more than 40 parts by weight, the elasticity becomes too large and peels off easily, and more than 20 parts by weight. When a small amount is added, the elasticity of the waterproof sheet is lowered and there is a problem that the waterproof sheet is easily broken by an impact from the outside. Therefore, it is preferable to have a limited weight portion as described above.

2-Bromo-4-nitrotoluene provides a surfactant function to improve agitability when the composition is stirred in the preparation of the asphalt compound composition.

Here, 2-bromo-4-nitrotoluene is added in 10-30 parts by weight based on 100 parts by weight of N-phenylhydroxylamine. When more than 30 parts by weight is added, the degree of binding of the compositions is rather reduced, so that the adhesion function is reduced. This decreases, and when less than 10 parts by weight is added, the stirrability of the compositions is greatly reduced, and there is a problem that the adhesion function and the coating film function are deteriorated, so it is preferable to have the limited parts by weight as described above.

Cyclohexanecarboxylic acid provides a function of improving the adhesive strength between the PET film and the concrete layer.

Here, cyclohexanecarboxylic acid is added in 3-5 parts by weight based on 100 parts by weight of N-phenylhydroxylamine. When added more than 5 parts by weight, the adhesion between the PET film and the concrete layer surface increases, but other compositions Since the agitation property is lowered, and when less than 3 parts by weight is added, the adhesion between the PET film and the concrete layer is lowered, so that there is a problem in that the adhesive function is not provided to prevent thermal deformation during the construction of the PET film. It is preferable to have a limited part by weight, such as

Talc provides a function of preventing pinholes when adhering a waterproof sheet to a concrete layer.

Here, 2-4 parts by weight of talc is added based on 100 parts by weight of N-phenylhydroxylamine, but when more than 4 parts by weight is added, the solid content increases, stirrability is lowered, and the viscosity is increased, so that usability and physical properties are rather deteriorated. It is lowered, and when less than 2 parts by weight is added, there is a problem in that it is difficult to secure the thickness of the coating film because the solid content is small, so it is preferable to have the limited parts by weight as described above.

On the other hand, the triple composite waterproofing construction method using the waterproof sheet manufactured by the rubberized asphalt self-adhesive waterproofing sheet manufacturing method according to an embodiment of the present invention will be described as follows.

First, pretreatment operations such as cleaning and planarization are performed on the surface of the concrete layer.

Thereafter, a primer is applied to the surface of the concrete layer.

Thereafter, the rubberized asphalt self-adhesive waterproofing sheet manufactured by the manufacturing method as described above is adhered to the surface of the concrete layer.

Thereafter, a known polyurea is applied and reinforced at the joint portion of the waterproof sheet.
On the other hand, in the present invention, on the upper surface of the waterproof sheet coated and reinforced with polyurea at the joint as described above, a known waterproofing step of applying a known polyurea or polyurethane waterproofing agent to improve waterproofing performance is additionally performed. It is preferable to practice

Hereinafter, the effect of the waterproof sheet manufactured by the manufacture of the rubberized asphalt self-adhesive waterproofing sheet according to an embodiment of the present invention will be described through specific examples.

The following examples are for evaluating the composite construction performance with the urethane coating film waterproofing agent using the rubberized asphalt self-adhesive waterproofing sheet according to the present invention, and tests such as tensile strength and elongation according to tensile performance and temperature-dependent performance was carried out, and compared with the prototype A company, the measurement results are shown in Table 1 by comparison.

100 parts by weight of N-phenylhydroxylamine 85 parts by weight of cyclopentadiene, 75 parts by weight of 1,4-polyisoprene, 65 parts by weight of dimethyl terephthalate, 55 parts by weight of straight asphalt, 45 parts by weight of broken asphalt, 2-bro 5 parts by weight of mo-4-nitrotoluene, 2 parts by weight of cyclohexanecarboxylic acid, and 1 part by weight of talc are mixed to prepare an asphalt compound composition, and the asphalt compound composition is applied to one side of a PET film to prepare a waterproof sheet , pre-treatment and adhesion construction on the surface of the concrete layer on which the primer is applied, and the well-known polyurea is applied and reinforced at the joint to perform a composite waterproofing method.

100 parts by weight of N-phenylhydroxylamine 70 parts by weight of cyclopentadiene, 60 parts by weight of 1,4-polyisoprene, 50 parts by weight of dimethyl terephthalate, 40 parts by weight of straight asphalt, 30 parts by weight of brown asphalt, 2-bro 20 parts by weight of mo-4-nitrotoluene, 4 parts by weight of cyclohexane carboxylic acid and 3 parts by weight of talc are mixed to prepare an asphalt compound composition, and the asphalt compound composition is applied to one surface of a PET film to prepare a waterproof sheet , pre-treatment and adhesion construction on the surface of the concrete layer on which the primer is applied, and the well-known polyurea is applied and reinforced at the joint to perform a composite waterproofing method.

100 parts by weight of N-phenylhydroxylamine 55 parts by weight of cyclopentadiene, 45 parts by weight of 1,4-polyisoprene, 35 parts by weight of dimethyl terephthalate, 25 parts by weight of straight asphalt, 45 parts by weight of brown asphalt, 2-bro 35 parts by weight of mo-4-nitrotoluene, 10 parts by weight of cyclohexanecarboxylic acid, and 5 parts by weight of talc are mixed to prepare an asphalt compound composition, and the asphalt compound composition is applied to one surface of a PET film to prepare a waterproof sheet , pre-treatment and adhesion construction on the surface of the concrete layer on which the primer is applied, and the well-known polyurea is applied and reinforced at the joint to perform a composite waterproofing method.

Therefore, according to the manufacture of the rubberized asphalt self-adhesive waterproofing sheet according to the embodiment of the present invention and the triple composite waterproofing construction method using the same, as shown in Table 1 above, in the case of the product of Company A, adhesion at 60°C and -20°C In contrast to the large difference in performance, the embodiments of the present invention are measured similarly, and it can be seen that tear strength, recognized strength, and elongation are good even under various construction temperature conditions, and excellent mechanical properties and durability compared to the products of Company A know that you have

Although the present invention described above has been described with respect to specific embodiments, various modifications may be made without departing from the scope of the present invention. Therefore, the scope of the invention should not be defined by the described embodiments, but should be defined by the claims and equivalents of the claims.

Claims (2)

100 parts by weight of N-phenylhydroxylamine, 60-80 parts by weight of cyclopentadiene, 50-70 parts by weight of 1,4-polyisoprene, 40-60 parts by weight of dimethyl terephthalate, 30-50 parts by weight of straight asphalt, blown 20-40 parts by weight of asphalt, 10-30 parts by weight of 2-bromo-4-nitrotoluene, 3-5 parts by weight of cyclohexanecarboxylic acid, and 2-4 parts by weight of talc to prepare an asphalt compound composition;
Rubberized asphalt self-adhesive waterproofing sheet manufacturing method comprising the step of applying the asphalt compound composition to one surface of the PET film. Including the rubberized asphalt self-adhesive waterproofing sheet manufactured according to claim 1,
A step of applying a primer to the surface of the concrete layer after pretreatment;
attaching the waterproof sheet to the surface of the concrete layer on which the primer is applied;
applying and reinforcing polyurea to the joint portion of the waterproof sheet;
A triple composite waterproofing construction method using a rubberized asphalt self-adhesive waterproofing sheet, comprising the step of applying a polyurea or polyurethane waterproofing agent to the upper surface of the waterproofing sheet coated with polyurea at the joint and reinforced.