KR20220093974A - Heat shield and insulation waterproof sheet using polymer flexible laminate - Google Patents

Abstract

The present invention relates to a heat shield insulation composite waterproof sheet, and more specifically, to a heat shield composite laminate having excellent heat shield and insulation effects and capable of preventing aging and cracking of various concrete building walls or floors, and asphalt road surfaces. The heat shield and insulation composite waterproof sheet includes a first composite layer, a second composite layer, and a composite waterproof layer, and has a heat shield layer formed by curing a two-component polyurethane composition on a second soft waterproof layer surface of the composite waterproof layer.

Description

Thermal insulation waterproof sheet using polymer soft laminate {HEAT SHIELD AND INSULATION WATERPROOF SHEET USING POLYMER FLEXIBLE LAMINATE}

The present invention relates to a thermal insulation composite waterproof sheet, and more specifically, it can prevent aging and cracking of walls or floors of various concrete buildings, asphalt road surfaces, etc. It relates to a composite waterproofing sheet.

In general, a method of forming a defect repair layer on a road or a roof of a building in order to prevent aging of the concrete or asphalt substrate surface and prevent water leakage is known.

Mainly, defects such as non-uniformity or expansive cracks that occur during the curing process of concrete occur because the ground is not uniform and cannot support the load. In order to solve this problem, by forming a layer with a sheet and repairing it, research to reduce the complexity of repair work and reduce costs is emerging.

In the case of forming a layer with a conventional sheet, there is a problem in that the sheet-to-sheet gap occurs due to poor jointing between the sheets, and the strength of the sheet is weak, which makes construction difficult. In addition, since it is impossible to discharge gas and moisture on the construction target surface, a lifting phenomenon occurs, and cracks due to this remain.

In addition, in the case of the conventional sheet, due to high thermal conductivity and low infrared reflectance, the adhesive effect inside the sheet may be reduced in a high temperature and high humidity environment, and the durability of the sheet may be reduced, thereby reducing mechanical strength.

Due to the above phenomenon, the waterproof effect may be lowered, and each layer may be deformed, and the smoothness of the sheet may be lowered.

In addition, in the case of the sheet, the heat shielding and thermal insulation effect is low, so when it is constructed in a building, high temperature may transfer heat to the inside of the building in summer, and in winter, the problem of energy loss may also occur due to the phenomenon of internal heat being released to the outside. have.

Republic of Korea Patent Publication No. 10-2005-0072727 (2005.07.12)

An object of the present invention is to provide a thermal insulation composite waterproof sheet that does not cause lifting and cracking by minimizing the shrinkage and expansion due to heat of the thermal insulation composite waterproof sheet in order to solve the above problems.

Another object of the present invention is to form an extension so that the length of the second composite layer is formed to be longer than the length of the first composite layer in one or more corner directions. An object of the present invention is to provide a thermal insulation composite waterproof sheet that does not cause distortion and distortion.

Another object of the present invention is easier adhesion according to the curvature of the desired structure compared to the conventional defect repair sheet, there is no fear of being damaged at high or low temperatures, the thermal insulation effect is more excellent, and the lighter heat shielding insulation composite waterproofing to provide sheets.

The present invention provides a first composite layer in which a nonwoven fabric and a PVC film layer are laminated,

A second composite layer in which the first flexible waterproofing layer, the fiber mesh layer and the second flexible waterproofing layer are laminated, the second composite layer including an extension formed in one or more corner directions longer than the length of the first composite layer;

and a composite waterproofing layer in which the PVC film layer surface of the first composite layer and the first flexible waterproof layer surface of the second composite layer are laminated to each other,

To provide a heat-insulating composite waterproof sheet having a heat-shielding layer obtained by curing a two-component polyurethane composition comprising an acrylic polyol and polyisocyanate on the second flexible waterproofing layer surface of the composite waterproofing layer.

According to an aspect of the present invention, the two-component polyurethane composition may be coated by mixing a mixture of a polyisocyanate as a main subject, an acrylic polyol as a curing agent, and a curing catalyst.

According to an aspect of the present invention, the main agent and the curing agent include a composition of 2: 0.5 to 1.5.

According to an aspect of the present invention, the two-component polyurethane composition may further include a thermal barrier.

According to an aspect of the present invention, the PVC film layer may include 50 to 150 parts by weight of a plasticizer, 1 to 60 parts by weight of a stabilizer, and 0.5 to 5 parts by weight of a pigment based on 100 parts by weight of PVC.

According to an aspect of the present invention, the PVC film may include 10 to 40 parts by weight of a new material and 90 to 60 parts by weight of a recycled material.

According to an aspect of the present invention, the flexible waterproof layer may be a PVC-based tarpaulin waterproof sheet.

According to an aspect of the present invention, the nonwoven fabric may be any one or two or more selected from polyester-based fibers, polyamide-based fibers, polyethylene-based fibers, polyacrylic fibers, and polypropylene-based fibers.

According to an aspect of the present invention, the nonwoven fabric may be plasma-treated.

According to an aspect of the present invention, the fiber mesh layer may be formed of PVC fibers having a basis weight of 10 to 100 g/m ² .

According to an aspect of the present invention, the thermal insulation composite waterproof sheet may have a near-infrared reflectance of 80% or more and a thermal conductivity of 0.1 W/(m·K) or less.

The polymer flexible laminate according to the present invention has excellent flexibility and durability, and is easy to discharge gas and moisture, so there is no lifting or cracking after forming a layer, and no tears or holes are generated by foreign substances present on the construction target surface. There is no advantage.

In addition, the second composite layer according to the present invention has an advantage in that by forming an extension, the bond between the polymer flexible laminates is strong, and defects can be effectively repaired.

In addition, the heat-shielding composite waterproof sheet coated with two-component polyurethane according to the present invention has an excellent heat blocking rate and prevents external heat from penetrating inside or from dissipating internal heat to the outside, thereby effectively reducing cooling and heating costs. , the near-infrared reflectance is also high, preventing the penetration of external heat into the inside of the building in summer, thereby suppressing the penetration of external heat into the inside of the building in summer.

In addition, according to the invention, the thermal insulation composite waterproof sheet has an advantage in that mechanical and chemical properties such as abrasion resistance, acid resistance and alkali resistance are also excellent due to the application of the two-component polyurethane.

Therefore, such a flexible polymer laminate can be applied to various uses such as repair, prevention, and waterproofing of various defects such as roads, roofs of buildings, and walls.

1 is a cross-sectional view of a polymer flexible laminate according to an embodiment of the present invention.

Hereinafter, the present invention will be described in more detail through embodiments or examples including the accompanying drawings. However, the following specific examples or examples are only a reference for describing the present invention in detail, and the present invention is not limited thereto, and may be implemented in various forms.

Also, unless defined otherwise, all technical and scientific terms have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description herein is for the purpose of effectively describing particular embodiments only and is not intended to limit the invention.

Also, the singular forms used in the specification and appended claims may also be intended to include the plural forms unless the context specifically dictates otherwise.

Also, when a part "includes" a certain component, it means that other components may be further included, rather than excluding other components, unless otherwise stated.

As used herein, the term “tarpaulin” refers to a tar-coated fiber material, and generally refers to any type of fiber coated with waterproofing on one side or both sides of the fiber material.

In addition, the terms “first flexible waterproof layer” and “second flexible waterproof layer” used in the present invention are divided to apply the stacking order, and are the same as the term “soft waterproof layer” used in the present invention.

In the conventional waterproofing sheet, after construction, the sheet is damaged by ultraviolet rays and infrared rays, so that a lifting phenomenon and a cracking phenomenon occur, thereby reducing the waterproofing effect.

In addition, there is a disadvantage in that the durability and waterproof effect are further reduced due to the occurrence of cracks between the sheets due to poor jointing between the waterproof sheets.

Accordingly, the present invention provides a first composite layer in which a nonwoven fabric and a PVC film layer are laminated,

A second composite layer in which the first flexible waterproofing layer, the fiber mesh layer and the second flexible waterproofing layer are laminated, the second composite layer including an extension formed in one or more corner directions longer than the length of the first composite layer;

A composite waterproofing layer in which the PVC film layer surface of the first composite layer and the first flexible waterproof layer surface of the second composite layer are laminated with each other,

The above problem was solved by providing a heat shielding insulation composite waterproof sheet having a heat shield layer obtained by curing a two-component polyurethane composition containing an acrylic polyol and polyisocyanate on the second flexible waterproof layer surface of the composite waterproof layer.

Since the heat shielding composite waterproof sheet includes the laminated structure, it is possible to effectively block ultraviolet and infrared rays to improve thermal energy efficiency inside the building, thereby reducing cooling costs or heating costs.

In addition, the heat-insulating composite waterproof sheet further includes an extension, so that the joint between each sheet is dense, so that the adhesiveness and waterproof effect are further improved.

Hereinafter, the configuration of the heat shielding composite waterproof layer will be described in more detail with reference to the drawings.

As shown in Figure 1 of the present invention,

The first composite layer 100 in which the nonwoven fabric 110 and the PVC film layer 120 are laminated from the bottom,

The first flexible waterproofing layer 210, the fiber mesh layer 220 and the second flexible waterproofing layer 230 are stacked from the bottom, and the extension is formed longer in the corner direction than the length of the first composite layer 100 in any one or more directions. A second composite layer 200 comprising 300,

A composite waterproofing layer in which the PVC film layer 120 side of the first composite layer 100 and the first flexible waterproof layer 210 side of the second composite layer 200 are laminated with each other,

It provides a heat-insulating insulating composite waterproofing sheet 1000 having a heat-insulating layer 400 obtained by curing a two-component polyurethane composition containing an acrylic polyol and polyisocyanate on the second flexible waterproofing layer 230 side of the composite waterproofing layer.

The heat-insulating composite waterproof sheet 1000 is a heat-insulating composite waterproof sheet 1000 in which the first composite layer 100, the second composite layer 200, and the heat shield layer 400 are sequentially stacked.

The first composite layer 100 may be integrated by bonding the nonwoven fabric 110 and the PVC film layer 120 to each other by heat compression or an adhesive. The PVC film layer 120 is matched to one surface of the nonwoven fabric 110, so that it has excellent flexibility and excellent heat retention to prevent internal condensation.

According to an aspect of the present invention, the nonwoven fabric 110 may absorb moisture generated on the construction target surface to serve as heat insulation and heat retention. The type of the nonwoven fabric 110 is not limited, but for example, any one or two or more selected from polyester-based fibers, polyamide-based fibers, polyethylene-based fibers, polyacrylic fibers, and polypropylene-based fibers. have.

In addition, the nonwoven fabric 110 may have a basis weight of 50 g/m ² to 300 g/m ² , preferably 70 g/m ² to 250 g/m ² , and more preferably 50 g/m 2 to 250 g/m 2 . m ² to 200 g/m ² It may be, but is not limited thereto.

As the nonwoven fabric 110 includes the basis weight range, since gas, air and moisture generated in the construction surface can be effectively discharged and absorbed, there is an advantage in that contraction or expansion can be minimized. Therefore, it is possible to prevent the phenomenon of lifting and cracking after the construction of the heat shielding insulation composite waterproof sheet.

In addition, the thickness of the nonwoven fabric 110 is also not limited, but may be 0.1 to 5 mm, preferably 0.3 to 3 mm, and more preferably 0.5 to 2 mm. In the thickness range, the effect of heat insulation and heat retention may be excellent, and the flexibility may also be excellent when laminated with a PVC film.

According to an aspect of the present invention, the nonwoven fabric 110 may be plasma-treated.

In the plasma treatment method, plasma treatment can be performed using a plasma treatment device at a treatment speed of 1 to 10 m/min and a voltage within a range of 0.1 to 1 kW, but if the nonwoven fabric 110 is polarized, it is limited thereto it is not

As the nonwoven fabric 110 is subjected to plasma treatment, the surface of the nonwoven fabric 110 becomes more polarized, so that the polar polymer PVC film can be more densely bonded by thermal bonding or adhesive.

Accordingly, the plasma-treated nonwoven fabric 110 and the first composite layer 100 laminated with a PVC film have high adhesiveness, so that the durability of the first composite layer 100 is improved, and the effect of heat insulation and heat retention is improved. It can also be better.

According to an aspect of the present invention, the PVC film layer 120 is a PVC film prepared including 50 to 150 parts by weight of a plasticizer, 1 to 60 parts by weight of a stabilizer, and 0.5 to 10 parts by weight of a pigment based on 100 parts by weight of PVC. Preferably, 50 to 130 parts by weight of a plasticizer, 3 to 30 parts by weight of a stabilizer, and 0.7 to 5 parts by weight of a pigment based on 100 parts by weight of PVC, more preferably 80 to 100 parts by weight of a plasticizer based on 100 parts by weight of PVC parts, 5 to 15 parts by weight of a stabilizer, and 1 to 3 parts by weight of a pigment.

The PVC film may be manufactured with the above composition, thereby being more flexible and also excellent in durability at the same time.

The plasticizer may be a fatty acid ester-based compound, a phthalate-based compound, a phosphate, or an epoxy ester-based compound, and preferably a phthalate-based compound.

Examples of the phthalate-based compound include dioctyl phthalate, dioctyl phthalate, dibutyl phthalate, butyl benzyl phthalate, aldrich, and dioctyl terephthalate. terephthalate) and the like may be used, but any one used in the industry may be used.

In addition, as the stabilizer, a single linkage stabilizer (BASIC LEAD STABILIZER) may be used, and specifically, Tri-Basic Lead Sulphate, Di-basic Lead Phosphite, and dibasic lead stearate ( Di-basic lead stearate) and lead stearate may be used, but any one commonly used in the industry may be used.

In addition, as the pigment, calcium carbonate, talc, barium sulfate, silicon oxide, aluminum hydroxide, clay, etc. may be used, but any one commonly used in the industry may be used.

In addition, the PVC film may have a thickness of 0.1 to 20 mm, preferably 1 to 15 mm, and more preferably 5 to 10 mm, but is not limited thereto.

According to an aspect of the present invention, the PVC film may be composed of only a new material, and may be used by mixing a new material and a recycled material.

By including a recycling material in the PVC film, the cost is reduced compared to a PVC film manufactured using a conventional commercial polyvinyl chloride (PVC) resin as a raw material, and it can be eco-friendly by recycling waste materials.

Any recycled material mixed with the PVC film may be used, but preferably a waste wire covering material may be used. The elongation of the manufactured PVC film can be further improved because the waste wire covering material has a smaller stone dust content compared to the recycled PVC material used as a flooring material. it can be done

By using the waste wire covering material as the recycled material, even if the content of recycled material is more than that of new material in the PVC film, high elongation can be maintained due to the low stone dust content of the waste wire covering material, and durability is also greatly reduced There are advantages to not being.

According to an aspect of the present invention, the PVC film may include 10 to 40 parts by weight of new material and 90 to 60 parts by weight of recycled material, preferably 20 to 30 parts by weight of new material, and 80 to 70 parts by weight of recycled material. However, the present invention is not limited thereto.

The thickness of the first composite layer 100 may be 0.2 to 25 mm, preferably 1.3 to 18 mm, and more preferably 5.5 to 12 mm, but is not limited thereto.

Since the thickness of the first composite layer 100 is formed within the above range, the adhesive force between the nonwoven fabric 110 and the PVC film layer 120 is excellent in mechanical strength and durability, and the adhesive force with the second composite layer 200 is also It can be improved effectively.

In the present invention, the second composite layer 200 is laminated on the first composite layer 100, and the first composite layer ( 100) and can be integrated by heat bonding or adhesive.

The second composite layer 200 will be described in detail.

The second composite layer 200 is a first flexible waterproof layer 210, a fiber mesh layer 220 and a second flexible waterproof layer 230 by heat-compressing the fiber mesh layer 220 is a first flexible waterproof layer 210 and There is a sandwich type embedded between the second flexible waterproofing layer 230 .

By being formed in the sandwich form, mechanical properties such as elongation and strength of the second composite layer 200 are improved, adhesion to the PVC film layer 120 is excellent, and flexibility is maintained, so that there is an advantage in effective repair of defects. .

By laminating the soft waterproof layer on both sides of the fiber mesh layer 220, the second composite layer 200 is characterized in that it strengthens the tissue force and suppresses the tensile and elongation forces to prevent distortion of the second composite layer 200.

It is preferable that the flexible waterproof layer has a high waterproofing effect, and a polyurethane waterproofing sheet and a tarpaulin-based waterproofing sheet may be used as the type. The polyurethane waterproof sheet is not limited, but for example, a sheet in the form of any one selected from tar urethane, exposed urethane, hydration-reactive urethane, hard urethane, and flexible urethane may be used.

As the tarpaulin-based waterproofing sheet, modified or unmodified low-density polyethylene (LDPE), polyvinyl chloride (PVC), and a thermoplastic olefin (TPO: Thermoplastic olefin)-based resin, etc. A tarpaulin may be used, but preferably a PVC tarpaulin waterproofing sheet may be used.

By using the PVC tarpaulin waterproofing sheet as a flexible laminate, it is possible to manufacture a laminate having excellent mechanical properties as well as having excellent intermediate adhesion and ductility, as well as improving tear strength, tensile strength and abrasion resistance.

The thickness of the PVC tarpaulin waterproof sheet can be adjusted as needed, but may be 0.05 to 5 mm, preferably 0.07 to 3 mm, and more preferably 0.1 to 1 mm. When the thickness of the PVC tarpaulin waterproofing sheet is within the above range, there is an advantage of excellent flexibility.

In the present invention, the second composite layer ( 200) can be manufactured, and by including the second composite layer 200, it is possible to obtain the effect that a laminate with improved flexibility and durability can be manufactured.

According to an aspect of the present invention, the fiber mesh layer 220 is not limited, but may have a basis weight of 10 to 100 g/m 2 , preferably 15 to 70 g/m ² , and more preferably It may be 20 to 40 g/m ² .

In addition, the grid spacing of the fiber mesh layer 220 is to use a PVC fiber of 0.5 × 0.5 mm, to improve strength, to prevent distortion of the second composite layer 200, the first composite layer 100 and It is preferable because it can improve the adhesion of

It can be adjusted as needed, but the thickness of the fiber mesh layer 220 may be 0.05 to 1 mm, preferably 0.07 to 0.7 mm, more preferably 0.1 to 0.5 mm, but limited thereto not.

When the thickness of the fiber mesh layer 220 is within the above range, it is preferable to use a thickness within the above range because it has excellent flexibility and minimizes deformation under external conditions.

The second composite layer 200 laminated with the first flexible waterproof layer 210 , the fiber mesh layer 220 , and the second flexible waterproof layer 230 may be manufactured by thermocompression bonding. In addition, the thickness of the prepared second composite layer 200 may be 0.03 to 3 mm, preferably 0.15 to 2 mm, more preferably 0.3 to 1.5 mm, but is not limited thereto.

As the second composite layer 200 includes the thickness in the above range, while maintaining the flexibility of the second composite layer 200 , the mechanical strength and durability are excellent, and the adhesive force with the first composite layer 100 is also It can be improved effectively.

In addition, the method may further include a dot treatment on the first composite layer 100 .

A rubber dot may be formed on the upper portion of the PVC film layer 120 of the first composite layer 100 or the PVC film layer 130 may be physically formed by thermocompression bonding, whereby the first composite layer 100 . It is possible to improve the adhesive strength of the second composite layer 200 .

In the present invention, the first composite layer 100 in which the nonwoven fabric 110 and the PVC film layer 120 are integrated is laminated by heat-compressing the nonwoven fabric 110 and the PVC film layer 120 or by applying an adhesive. can be laminated. In addition, the second composite layer 200 in which the fiber mesh layer 220 and the flexible waterproof layer are integrated may be bonded to the PVC film layer 120 of the first composite layer 100 face to face. In this case, the bonding may be performed by heat pressing or applying an adhesive. In this case, the PVC film layer 120 in which the upper part of the PVC film layer 120 is treated with dots may be used.

The dot-treated PVC film layer 120 may be physically formed by forming a rubber dot on the PVC film or by thermocompression bonding the PVC film, whereby the first composite layer 100 and the second composite layer ( 200) can improve the adhesion.

In addition, in the present invention, the integration of the nonwoven fabric 110 and the PVC film layer 120, the integration of the fiber mesh layer 220 and the soft waterproof layer, and the first composite layer 100 and the second composite layer 200 As the adhesive that can be used during lamination, a polyester-urethane-based adhesive, a polyether-urethane-based adhesive, a polyurethane-based adhesive, an acrylic adhesive, an epoxy-based adhesive, a polyolefin-based adhesive, an elastomer-based adhesive, and a fluorine-based adhesive may be used, preferably A polyurethane-based adhesive, an acrylic adhesive, and a polyolefin-based adhesive may be used. The adhesive that can be used in the present invention is not particularly limited thereto, but when the adhesive is used, it is possible to manufacture a laminate with significantly improved weather resistance and waterproofness by the adhesive layer formed by the adhesive, and thus it is preferable.

In addition, the second composite layer 200 may be formed to be longer than the length of the first composite layer 100 in one or more corner directions to form the extension part 300 .

By forming the extension part 300 , it is possible to check the effect of preventing cracks between the heat shielding and insulating composite waterproof sheets 1000 so that the strength is more than doubled. In addition, by forming the extension part 300 with the second composite layer 200 including a flexible waterproof layer in the form of a sheet having excellent ductility, the extension part 300 is about 5 to 20 cm from the structure and the wall of the structure. It is characterized in that it can perfectly repair corner defects due to its close contact, and construction is possible even when the floor surface is uneven. Separation, there is an advantage that can provide a thermal insulation composite waterproof sheet 1000 to prevent lifting and cracking.

According to an embodiment of the present invention, the extension part 300 may have a surface roughness (Ra) of 1 to 10 μm measured in accordance with KS B 0161 standard. In the present invention, as the surface roughness of the extension part 300 satisfies the above range, there is an advantage in that the adhesive force between the laminates can be significantly improved while maintaining the flexibility of the heat shielding and insulating composite waterproof sheet 1000 . When the surface roughness is less than 1 μm, the effect of improving the adhesive strength is insignificant, and when the surface roughness exceeds 10 μm, it does not show any further adhesive strength improvement effect. It is effective to form in the above-mentioned range.

According to an aspect of the present invention, the thermal insulation composite waterproof sheet 1000 may further include a heat shield layer 400 on the second composite layer 200 .

As the heat shielding and insulating composite waterproof sheet 1000 includes the heat shielding layer 400, it is possible to block ultraviolet and infrared rays to block thermal energy transmitted into the heat shield and heat insulation composite waterproof sheet 1000, and has abrasion resistance, acid resistance and alkali resistance. Accordingly, it is possible to suppress damage to the first composite layer 100 and the second composite layer 200 from the outside.

The heat shielding layer 400 will be described in detail.

The heat shield layer 400 may be a two-component polyurethane composition, and the two-component polyurethane composition may be applied by mixing a mixture of a polyisocyanate as a main subject, a polyol as a curing agent, and a curing catalyst.

The two-component polyurethane composition may be applied to a thickness of 0.1 to 1 mm on the upper portion of the second composite 200, preferably to a thickness of 0.2 to 0.8 mm, more preferably 0.3 to 0.6 It can be applied to a thickness of mm, but is not limited thereto.

The two-component polyurethane composition containing the acrylic polyol has excellent abrasion resistance and durability, and when applied on the heat shielding composite waterproof sheet 1000, the first composite layer 100 and the second The composite layer 200 may be protected.

The acrylic polyol is a hydroxyl group-containing monomer such as hydroxyethyl acrylate, hydroxyethyl methacrylate, hydroxypropyl acrylate, hydroxypropyl methacrylate, hydroxybutyl acrylate for the synthesis of the acrylic coating resin. other commonly used monomers,

For example, acrylic acid esters of C1-18 monohydric alcohols (e.g., methyl acrylate, butyl acrylate, 2-ethylhexyl acrylate), methacrylic esters of C1-18 monohydric alcohols (e.g., methyl Methacrylate, butyl methacrylate, 2-ethylhexyl methacrylate), acrylic acid ester and methacrylic ester of cycloaliphatic monoalcohol (e.g., cyclohexyl methacrylate, isobornyl methacrylate, trimethylcyclo hexyl acrylate), acrylic acid and methacrylic acid esters of aromatic monoalcohols (such as phenyl methacrylate, benzyl acrylate; aromatic vinyl (such as styrene, vinyltoluene, t-butylstyrene, nitrile monomers (such as For example, acrylonitrile; acid functional monomers such as itaconic acid, acrylic acid), amide functional monomers (eg methacrylamide, N-butoxymethylmethacrylamide), silane functional monomers (eg For example, gamma-methacryloxypropyltriethoxysilane), glycidyl functional monomers (eg glycidyl methacrylate) and acetoacetoxyethyl methacrylate, methacryloxyethyl phosphoric acid, perfluoro It can be obtained by copolymerization with other functional comonomers including roalkyl acrylate and methacrylate, and the acrylic polyol may have a weight average molecular weight of 1,000 to 30,000 g/mol, preferably 2,000 to 10,000 g/mol. and more preferably 3,000 to 9,000 g/mol, but is not limited thereto.

In addition, the hydroxyl value of the acrylic polyol is not particularly limited, but the hydroxyl value may be 100 mgKOH/g or more, preferably 110 to 200 mgKOH/g, and more preferably 120 to 180 mgKOH/g. .

When the hydroxyl group of the acrylic polyol satisfies the above range, when mixed with the main agent, the crosslinking time is appropriate, so it is easy to work. The hydroxyl value was measured based on JIS K 0070.

By using the acrylic polyol as a curing agent, it may have superior abrasion resistance and durability than aliphatic polyols such as polyester polyol, and may have an excellent effect in reflecting wavelengths such as infrared rays in particular.

In addition, the polyisocyanate, which is the subject of the two-part polyurethane composition, may be an aliphatic polyisocyanate or an aromatic polyisocyanate, or may include both. When the aliphatic polyisocyanate is included in the two-component polyurethane composition, it becomes easy to secure the heat-and-moisture resistance of the cured product. Moreover, according to this structure, there also exists an advantage, such as becoming easy to provide the softness|flexibility of hardened|cured material.

On the other hand, when the polyisocyanate of the two-component polyurethane composition includes an aromatic polyisocyanate, it is easier to improve the initial breaking strength and adhesive strength of the cured product compared to the aliphatic polyisocyanate.

Specific examples of the aliphatic polyisocyanate include hexamethylene diisocyanate (HDI), isophorone diisocyanate (IPDI), derivatives thereof, and the like. Among these, suitable examples of the aliphatic polyisocyanate include at least one of hexamethylene diisocyanate and hexamethylene diisocyanate derivatives. Compared with isophorone diisocyanate, hexamethylene diisocyanate and hexamethylene diisocyanate derivatives have fewer substituents that cause steric hindrance around the isocyanate group, the reaction point, and have high reactivity. Therefore, according to this structure, it becomes possible to form hardened|cured material in a shorter time. Moreover, according to this structure, there also exists an advantage, such as making it easy to set hardening temperature to low.

Specific examples of the aromatic polyisocyanate include diphenylmethane diisocyanate (MDI) such as 2,2'-, 2,4'- or 4,4'-diphenylmethane diisocyanate, 2,2'-, 2 ,6'-toluene diisocyanate (TDI), derivatives thereof, and the like can be exemplified. Among these, suitable examples of the aromatic polyisocyanate include at least one of diphenylmethane diisocyanate and diphenylmethane diisocyanate derivatives. According to this structure, it becomes possible to form a two-component polyurethane composition by reacting with a polyol with less heat. Moreover, according to this structure, there also exist advantages, such as an initial stage breaking strength of hardened|cured material, and adhesive strength improvement.

The viscosity of the polyisocyanate may be 1,000 to 10,000 mPa·s, preferably 2,000 to 8,000 mPa·s, and more preferably 3,000 to 7,000 mPa·s, but is not limited thereto.

As a polyisocyanate having the above viscosity range is used, it is easy to mix with a curing agent and a curing catalyst, and there is an advantage of easy operation during application.

By using the polyisocyanate and the acrylic polyol as a main agent and curing agent, heat resistance and infrared blocking effect are also excellent, so that the heat shielding and heat insulating effect of the heat shielding and insulating composite waterproof sheet can be excellent.

In addition, according to an aspect of the present invention, the main agent and the curing agent may be in an equivalent ratio of 2: 0.5 to 1.5, preferably 2: may be in an equivalent ratio of 0.7 to 1.3, more preferably 2: 0.8 to It may be an equivalence ratio of 1.2. As the two-component polyurethane composition is included in the equivalence ratio range, the two-component polyurethane composition has excellent heat-and-moisture resistance, has sufficient flexibility at low temperatures, and it is easy to obtain a cured product having good initial strength.

According to an aspect of the present invention, the two-component polyurethane composition may further include a thermal barrier.

As the two-component polyurethane composition further includes a heat-blocking agent, it is possible to add a better heat-shielding and heat-insulating effect to the heat-insulating heat-insulating composite waterproof sheet 1000 .

Antimony tin oxide (ATO), indium tin oxide (ITO), silicon dioxide (SiO2), aluminum oxide (Al2O3), molybdenum trioxide (MoO3), niobium pentoxide (Nb2O5), vanadium pentoxide, which are known in the art as the heat blocking agent (V2O5), tungsten bronze, and cesium tungsten oxide (CTO) may be inorganic oxides. Among them, antimony tin oxide (ATO) and indium tin oxide (ITO) are the most widely used because of their good infrared blocking properties. ) and cesium tungsten oxide (CTO), which may be particularly preferred may be antimony tin oxide (ATO).

The heat blocking agent may have a diameter of 1 to 200 nm, preferably 10 to 100 nm, and more preferably 10 to 50 nm.

By including the thermal barrier in the above diameter range in the two-component polyurethane composition, thermal barrier properties may be further improved.

The heat blocking agent may be mixed with 1 to 30 parts by weight, preferably from 4 to 20 parts by weight, more preferably from 8 to 15 parts by weight, based on 100 parts by weight of the two-component polyurethane composition. may be, but is not limited thereto.

By including parts by weight in the above range in the two-component polyurethane composition, miscibility and heat shielding effect may be more excellent, and in particular, it may have more excellent durability when curing the two-component polyurethane composition.

As the heat shielding composite waterproof layer includes all of the first composite layer 100 , the second composite layer 200 , and the heat shield layer 400 , it may have an excellent heat shielding and heat insulating effect.

According to an aspect of the present invention, the thermal insulation composite waterproof sheet 1000 may have a near-infrared reflectance of 80% or more and a thermal conductivity of 0.1 W/(m·K) or less, preferably a near-infrared reflectance of 80 to 95% and at the same time, the thermal conductivity may be 0.001 to 0.1 W/(m K), and more preferably, the near-infrared reflectance is 85 to 90% and the thermal conductivity is 0.002 to 0.05 W/(m K) at the same time. .

In addition, the elongation at 60° C. may be 15% or more, preferably 15 to 60%, and more preferably 30 to 50%, when measured based on the KSF4911 standard, but is not limited thereto.

In addition, the tensile strength may be 20 N/mm or more, preferably 20 to 60 N/mm, and more preferably 40 to 50 N/mm, when measured according to the KSF4911 standard, but limited thereto it is not

In addition, the tear strength may be 130 N or more, preferably 150 to 250 N, and more preferably 190 to 230 N, when measured according to the KSF4911 standard, but is not limited thereto.

In addition, the adhesive strength may be 5 kgf/inch or more, preferably 5 to 40 kgf/inch, more preferably, when the adhesive strength is measured at a test speed of 50 mm/min using a universal testing machine. It may be 20 to 30 kgf / inch, but is not limited thereto.

As the thermal insulation composite waterproof sheet 1000 includes the mechanical strength of elongation, tensile strength, and tear strength in the above range, it has excellent durability and can be used without replacement for a long time even when exposed to the outside, and has the advantage of smooth construction have.

In addition, as the thermal insulation composite waterproof sheet 1000 includes the adhesive strength in the above range, each layer is not pushed or destroyed even when the temperature rises or an external force is added, so that the heat shielding, thermal insulation and waterproofing effect can be maintained for a long time. Each layer does not warp or swell even when used for a long period of time, which has the advantage of reducing costs due to a longer reinforcement cycle such as replacement.

Finally, as the heat-insulating composite waterproof sheet 1000 includes the near-infrared reflectance and heat reflectance in the above range, it reflects infrared rays to reflect the infrared rays that are injected into the heat-insulating thermal insulation composite waterproof sheet 1000 inside.

Accordingly, damage to the inside of the heat shielding and insulating composite waterproof sheet 1000 due to heat can be suppressed, and cooling costs or heating costs are reduced by blocking and insulating external heat.

Hereinafter, the method for manufacturing the flexible polymer laminate of the present invention will be described in more detail.

The manufacturing method of the polymer flexible laminate of the present invention,

a) laminating and laminating the nonwoven fabric 110 and the PVC film layer 120 from the bottom to prepare a first composite layer 100;

b) manufacturing a second composite layer 200 by laminating and laminating the first flexible waterproof layer 210, the fiber mesh layer 220, and the second flexible waterproof layer 230 from the bottom; and

c) forming a composite waterproof sheet by laminating the PVC film layer 120 side of the first composite layer 100 and the second flexible waterproof layer 230 of the second composite layer 200 to face each other; and

d) applying a two-component polyurethane composition to the upper portion of the composite waterproof sheet and laminating the heat shield layer 400 may include forming the heat shielding insulation composite waterproof sheet 1000 .

In addition, the second composite layer 200 may form an extension portion 300 that is longer than the length of the first composite layer 100 in one or two or more corner directions.

After step a), for example, a dot treatment of a rubber component on the PVC film layer 120 of the first composite layer 100 or thermocompression bonding the PVC film layer 120 may form irregularities. By performing the dot treatment, the adhesion between the first composite layer 100 and the second composite layer 200 can be remarkably improved, which is effective.

In addition, in step b), the second composite layer 200 is formed to be longer than the length of the first composite layer 100 in one or two or more corner directions with the first composite layer 100 to form the extension 300 . can do it When the joint extension part 300 is formed, the effect of preventing cracks between the heat-insulating and insulating composite waterproof sheets 1000 to increase the strength of the sheet more than twice can be confirmed. In addition, by forming the extension part 300 with the second composite layer 200 including the flexible waterproof layer in the form of a sheet having excellent ductility, the extension part 300 is about 5 to 20 cm from the structure and the wall of the structure. It can be installed and repaired because it is closely attached.

According to an embodiment of the present invention, irregularities may be formed at the joint of the second composite layer 200 . The unevenness may be formed by a method clearly known in the art. For example, it may be formed by blasting, grinding, cutting, etc., or by injection molding or press molding using a mold having an uneven structure, but is not limited thereto.

Examples of blast include grit blast, sand blast, shot blast, wet blast, etc. More preferably, sand blast is effective. A blast material having an average diameter of 10 to 1000 μm may be used, and as the blast material, a metal material, a ceramic material, or the like may be used.

In addition, forming by press molding using a mold with irregularities of 10 to 1000 μm in size can shorten the manufacturing process and is effective.

The joint formed by the above method may have a surface roughness (Ra) of 1 to 10 μm measured in accordance with the KS B 0161 standard. The surface roughness can be measured by using a three-dimensional non-contact surface roughness measuring instrument (NT 2000, WYCO Corporation) Ra (center line average roughness) and Rz (10-point average roughness).

The present invention provides a sheet-type second composite layer to compensate for the disadvantage that the urethane is not applied to a high place due to the swelling phenomenon that occurs when the two-component polyurethane composition is applied to form a conventional coating film and the height of the ground. By employing , the process of applying and drying the coating film of the prior art is omitted, thereby reducing the manufacturing cost.

In addition, by forming the extension part 300 as the second composite layer, construction is possible even when the floor surface is uneven, excellent adhesion, effective for corner defect repair, separation between laminates after construction, lifting and There is an advantage that can provide the thermal insulation composite waterproof sheet 1000 that prevents cracks, and it is suitable for waterproof construction and thus can exhibit effective waterproof properties.

Hereinafter, the present invention will be described in more detail based on Examples and Comparative Examples. However, the following Examples and Comparative Examples are only examples for explaining the present invention in more detail, and the present invention is not limited by the following Examples and Comparative Examples.

[Measurement of mechanical properties]

Tensile strength and tear strength were measured according to the KSF4911 standard. In addition, the elongation was measured at 60 ℃ based on the KSF4911 standard.

[thermal conductivity]

Thermal conductivity was measured at 20 °C in accordance with KS L 9016:2010 standard.

[Near-infrared reflectance]

Near-infrared reflectance was measured in accordance with KS M 5987:2018 standard.

[Example 1]

Polypropylene (H7700, LG Chem) filament fibers were spun, laminated as a multi-layer web on a belt moving continuously so that the basis weight was 150 g/m2 and the weight was 500 g, and thermocompression bonding was performed to prepare a nonwoven fabric having an average thickness of 1.8 mm.

Here, a PVC film having an average thickness of 7 mm was thermally bonded to prepare a first composite layer having a total thickness of 7.8 mm and a size of 140 X 140 cm.

The PVC film contains 90 parts by weight of butyl benzyl phthalate (aldrich) as a plasticizer, 10 parts by weight of di-basic lead stearate (DANDUK) as a stabilizer, and calcium carbonate (a pigment) based on 100 parts by weight of PVC. CaCO ₃ , Samjeon Chemical) is manufactured by extrusion molding 2 parts by weight.

A second composite with an average thickness of 0.5 mm and a 146 X 146 cm standard by thermocompression bonding a PVC tarpaulin sheet with an average thickness of 0.2 mm on both sides of a PVC fiber mesh layer with an average thickness of 0.1 mm and a basis weight of 30 g/m2. layers were prepared.

In the first composite layer, the PVC film side and the polymer PVC tarpaulin sheet of the second composite layer were attached by face-to-face thermocompression bonding to prepare a flexible polymer laminate waterproofing sheet including an extension of 6 cm in length.

The second composite layer of the polymer flexible laminate was coated with two-component polyurethane to a thickness of 0.4 mm and cured to prepare a heat-shielding composite waterproof sheet.

The two-component polyurethane is the main polyisocyanate (HDI-based block aliphatic polyisocyanate DESMODUR PL 350 (BAYER)) 2 equivalent ratio and acrylic polyol (NRC-5445 (Noroo Chemical), (Methyl methacrylate-butyl acrylate-2-hydroxyethyl methacrylate copolymer) ) 1 equivalent ratio, and dibutyltin dilaurate (WOOCHANG CHEMICAL), which is a curing catalyst, is mixed thereto.

Tensile strength, tear strength, elongation, thermal conductivity, and near-infrared reflectance of the prepared thermal insulation composite waterproof sheet were measured and shown in Table 1 below.

The joint and other heat-insulating composite waterproof sheets (15 X 15 cm) were adhered using a polyurethane adhesive, and the adhesive strength was measured under the test speed 50 mm/min measurement condition using a universal material tester and shown in Table 1 below. it was

[Example 2]

In Example 1, a heat shielding insulation composite waterproof sheet was prepared in the same manner except for using a nonwoven fabric treated with plasma in a processing speed of 1 m/min, a voltage of 0.1 kW and helium gas for 10 minutes instead of the nonwoven fabric in Example 1, The physical properties were measured and shown in Table 1 below.

[Example 3]

In Example 1, except that 10 parts by weight of antimony tin oxide (ATO) having an average particle diameter of 40 nm was further included in 100 parts by weight of the two-component polyurethane in Example 1, a thermal insulation composite waterproof sheet was prepared in the same manner as for the rest, and the physical properties were measured Thus, it is shown in Table 1 below.

[Example 4]

In Example 2, except that 10 parts by weight of silicon dioxide having an average particle diameter of 40 nm was further included in 100 parts by weight of the two-component polyurethane in Example 2, a heat shielding insulation composite waterproof sheet was prepared in the same manner as for the rest, and the physical properties were measured and measured in Table 1 shown in

[Comparative Example 1]

In Example 1, when preparing the second composite layer, the same procedure was followed except for using a soft urethane sheet having an average thickness of 1.0 mm on both sides of the fiber mesh layer instead of a PVC tarpaulin sheet having an average thickness of 1.0 mm. A thermal insulation composite waterproof sheet was prepared, and the physical properties were measured and shown in Table 1 below.

[Comparative Example 2]

In Example 1, except that the two-component polyurethane coating treatment was not performed, a heat-insulating composite waterproof sheet was prepared in the same manner as in the rest, and the physical properties were measured and shown in Table 1 below.

[Comparative Example 3]

In Example 1, except that polyether polyol was used as the curing agent instead of acrylic polyol, a heat-shielding insulation composite waterproof sheet was prepared in the same manner as in the rest, and physical properties were measured and shown in Table 1 below.

[Comparative Example 4]

Except that the extension part was not formed in Example 1, the heat shielding insulation composite waterproof sheet was manufactured in the same process as the rest, and the physical properties were measured and shown in Table 1 below.

60℃ elongation (%) Tensile strength (N/mm) tear strength
(N) Adhesive strength
(kgf/inch) thermal conductivity
(W/(m K) Near-infrared reflectance (%) Example 1 38.0 25.2 170.2 19 0.046 86.5 Example 2 40.0 36.1 181.1 25 0.030 87.1 Example 3 45.5 40.3 190.4 20 0.011 88.5 Example 4 47.1 46.4 200.5 25 0.005 88.7 Comparative Example 1 17.2 22.2 120 14 0.12 84.1 Comparative Example 2 18.1 23.9 133 18 0.51 40.8 Comparative Example 3 19.1 20.1 118 18 0.33 57.3 Comparative Example 4 19.5 24.2 150 5 0.095 84.5

Examples are superior to the comparative examples in tensile strength and tear strength, and in particular, the thermal conductivity is very low, preventing external heat from penetrating into the interior or dissipating internal heat to the outside, thereby effectively reducing cooling and heating costs.

In addition, the heat-insulating composite waterproof sheet also has a particularly high near-infrared reflectance, and prevents external heat from penetrating into the building in summer, thereby suppressing the penetration of external heat into the building in summer.

As described above, the present invention has been described with reference to specific matters and limited examples and drawings, but these are only provided to help a more general understanding of the present invention, and the present invention is not limited to the above embodiments, and the present invention is not limited to the above embodiments. Various modifications and variations are possible from these descriptions by those of ordinary skill in the art.

Therefore, the spirit of the present invention should not be limited to the described embodiments, and not only the claims to be described later, but also all those with equivalent or equivalent modifications to the claims will be said to belong to the scope of the spirit of the present invention. .

100: first composite layer
110: non-woven fabric layer
120: PVC film layer
200: second composite layer
210: first flexible waterproof layer
220: fiber mesh layer
230: second flexible waterproof layer
300: extension
400: heat shield layer
1000: thermal insulation composite waterproof sheet

Claims (11)

A first composite layer in which a nonwoven fabric and a PVC film layer are laminated;
A second composite layer in which the first flexible waterproof layer, the fiber mesh layer, and the second flexible waterproof layer are laminated, the second composite layer including an extension formed in one or more corner directions longer than the length of the first composite layer;
A composite waterproofing layer in which the PVC film layer surface of the first composite layer and the first flexible waterproof layer surface of the second composite layer are laminated with each other,
A heat shielding insulation composite waterproof sheet having a heat shield layer obtained by curing a two-component polyurethane composition comprising an acrylic polyol and polyisocyanate on the surface of the second flexible waterproof layer of the composite waterproof layer. The method of claim 1,
The two-component polyurethane composition is a thermal insulation composite waterproof sheet coated by mixing a mixture of a polyisocyanate as the main subject, an acrylic polyol as a curing agent, and a curing catalyst. 3. The method of claim 2,
The main material and the curing agent 2: heat shielding insulation composite waterproof sheet of a composition of 0.5 to 1.5. 3. The method of claim 2,
The two-component polyurethane composition is a thermal insulation composite waterproof sheet further comprising a thermal barrier. The method of claim 1,
The PVC film layer is a PVC film produced including 50 to 150 parts by weight of a plasticizer, 1 to 60 parts by weight of a stabilizer, and 0.5 to 5 parts by weight of a pigment based on 100 parts by weight of PVC. 6. The method of claim 5,
The PVC film is a thermal insulation composite waterproof sheet comprising 10 to 40 parts by weight of a new material, 90 to 60 parts by weight of a recycled material. The method of claim 1,
The flexible waterproofing layer is a PVC-based tarpaulin waterproofing sheet, the thermal insulation composite waterproofing sheet. The method of claim 1,
The nonwoven fabric is a polyester-based fiber, polyamide-based fiber, polyethylene-based fiber, polyacrylic fiber, and any one or two or more selected from polypropylene-based thermal insulation composite waterproof sheet. The method of claim 1,
The nonwoven fabric is a plasma-treated thermal insulation composite waterproof sheet. The method of claim 1,
The fiber mesh layer is a thermal insulation composite waterproof sheet formed of PVC fibers having a basis weight of 10 to 100 g/m ² . The method of claim 1,
The thermal insulation composite waterproof sheet has a near-infrared reflectance of 80% or more and a thermal conductivity of 0.1 W/(m·K) or less.

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