KR20220060324A - Skin material of insulating material, insulating material, and method of producing the same - Google Patents

Abstract

Provided is a surface material for insulation comprising a laminate in which a metal layer, a glass scrim layer, and a polyolefin-based nonwoven fabric layer are sequentially laminated, wherein the metal layer has a surface roughness (Ra) of 10-100 nm, and having an adhesive strength of 30-60 kPa for a wall comprising a concrete or a mortar. Therefore, the present invention is capable of increasing production efficiency.

Description

Cotton material for insulation, insulation and method of manufacturing a surface material for insulation

The present invention relates to a face material for a heat insulator, a heat insulator, and a method for manufacturing a face material for an insulator.

Insulation materials used as interior and exterior materials for construction reduce the effect of external temperature changes on the internal temperature of the building by preventing the transfer of heat, thereby maintaining a constant indoor temperature with less energy. Such a thermal insulation material is generally composed of a foam that substantially performs a thermal insulation role and a face material surrounding the foam.

The insulating material is used by attaching it to a wall using a face material, but if it is not attached well, there is a problem in that structural stability is deteriorated, such as a gap widening.

In addition, the wall to which the insulating material is attached is made of concrete or mortar, and the concrete or mortar is alkaline, which causes problems such as corrosion. In order to overcome this, a coating layer is sometimes formed on the face material, but when the coating layer is formed, there is a problem in that the adhesion strength is lowered.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a face material for an insulator having excellent corrosion resistance while imparting structural stability with excellent adhesion strength.

It is also an object of the present invention to provide a method for more economically manufacturing the face material for the insulating material.

It is also an object of the present invention to provide a heat insulator including the face material for the heat insulator.

The objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention not mentioned may be understood by the following description, and will be more clearly understood by the examples of the present invention. It will also be readily apparent that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the appended claims.

Including a laminate in which a metal layer, a glass scrim layer and a polyolefin-based nonwoven fabric layer according to the present invention are sequentially laminated, the metal layer having a surface roughness (Ra) of 10 nm to 100 nm, and containing concrete or mortar It is possible to provide a face material for an insulating material having an adhesion strength to the wall of 30 kPa to 60 kPa.

In addition, sequentially laminating the metal layer, the glass scrim layer and the polyolefin-based nonwoven fabric layer according to the present invention to prepare a laminate; and plasma or corona treatment on the laminate to form a surface roughness, wherein the metal layer has a surface roughness (Ra) of 10 nm to 100 nm, and adhesion strength to a wall including concrete or mortar It can provide a method of manufacturing a face material for a heat insulating material of 30 kPa to 60 kPa.

Also foams according to the invention; and a face material attached to any one surface of the foam, wherein the face material includes a laminate in which a metal layer, a glass scrim layer, and a polyolefin-based nonwoven fabric layer are sequentially stacked, the metal layer having a surface roughness of 10 nm to 100 nm (roughness, Ra) and can provide an insulating material having an adhesion strength of 30 kPa to 60 kPa to a wall containing concrete or mortar.

The face material for insulation according to the present invention can provide excellent adhesion strength and corrosion resistance in relation to the wall and the foam at the same time. Accordingly, the heat insulating material including the face material can maintain excellent physical properties for a long period of time, and can prevent the spread of fire in case of fire. And, the face material achieves the above effect without a coating layer, and is economical.

In addition, the method for manufacturing the face material for insulation according to the present invention can achieve the above effect without a separate additional process such as forming a coating layer, thereby increasing production efficiency.

In addition, the insulating material according to the present invention, including the face material, can exhibit excellent adhesion strength and corrosion resistance at the same time.

In addition to the above-described effects, the specific effects of the present invention will be described together while describing specific details for carrying out the invention below.

1 is a schematic cross-sectional view of a face material for an insulator according to an embodiment of the present invention.
Figure 2 is a schematic diagram schematically showing an insulating material including a face material according to another embodiment of the present invention.

The above-described objects, features and advantages will be described below in detail with reference to the accompanying drawings, and accordingly, those of ordinary skill in the art to which the present invention pertains will be able to easily implement the technical idea of the present invention. In describing the present invention, if it is determined that a detailed description of a known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description will be omitted. Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to indicate the same or similar components.

In the following, that an arbitrary component is disposed on the "upper (or lower)" of a component or "upper (or below)" of a component means that any component is disposed in contact with the upper surface (or lower surface) of the component. Furthermore, it may mean that other components may be interposed between the component and any component disposed on (or under) the component.

Hereinafter, a face material and a heat insulating material for insulation according to some embodiments of the present invention will be described.

One embodiment of the present invention includes a laminate in which a metal layer, a glass scrim layer, and a polyolefin-based nonwoven fabric layer are sequentially stacked, wherein the metal layer has a surface roughness (Ra) of 10 nm to 100 nm, concrete or mortar It provides a face material for an insulating material having an adhesion strength of 30 kPa to 60 kPa to a wall comprising a.

The insulating material is composed of a foam and a face material, and the foam has a weight above a certain level, and is attached to a wall or the like through the face material. In some cases, a nonwoven fabric is used as a face material to impart adhesion, but the nonwoven fabric is easy to absorb moisture, and shrinks as it dries, and wrinkles are likely to occur. Accordingly, there may be a problem in that a gap is generated at the interface and consequently, structural stability is lowered.

In addition, the wall includes concrete or mortar, and the concrete or mortar exhibits alkalinity due to Ca(OH)2, causing problems such as corrosion. Accordingly, corrosion resistance can be provided by forming a coating layer on the face material, but there is a problem in that the adhesion strength is lowered.

The face material for the insulation includes a laminate in which a metal layer, a glass scrim layer, and a polyolefin-based nonwoven fabric layer are sequentially laminated, and the metal layer has a surface roughness (Ra) of 10 nm to 100 nm, and includes concrete or mortar It can exhibit improved corrosion resistance with excellent adhesion strength of about 30 kPa to about 60 kPa to the wall to be used. In addition, the face material for the insulator can minimize the propagation speed of the fire when a fire occurs due to excellent structural stability.

1 is a schematic cross-sectional view of a face material for a building insulating material according to an embodiment of the present invention. As shown in FIG. 1 , the face material for the insulation includes a laminate in which a metal layer, a glass scrim layer, and a polyolefin-based non-woven fabric layer are sequentially laminated, and excellent air permeability can be imparted along with excellent adhesion strength, dimensional stability and flame retardancy. there is.

Specifically, the polyolefin-based nonwoven fabric layer has excellent water vapor permeability, and can suppress the occurrence of wrinkles due to shrinkage or the like in the face material due to moisture in the foam composition or water generated during condensation of the phenol resin. The polyolefin-based nonwoven fabric layer may have a uniform structure by being prepared by a papermaking method. Papermaking method refers to obtaining a nonwoven fabric by mixing the raw materials constituting the nonwoven fabric with water, scooping out a certain basis weight through a mesh network, and dehydrating the water with pressure or heat.

The polyolefin-based nonwoven fabric layer may include a polyolefin chop and glass fibers. The polyolefin chop (chop) is to have a length of about 5 mm to about 20 mm, it may have excellent dispersibility and exhibit an improved anchoring effect.

The polyolefin-based nonwoven fabric layer may include one selected from the group consisting of polyethylene, polypropylene, and combinations thereof. For example, it may be a polypropylene nonwoven fabric layer. In addition, the polyolefin-based nonwoven fabric layer can provide excellent dimensional stability and adhesion strength, including glass fibers.

The polyolefin-based nonwoven fabric layer may have a thickness of about 0.1 mm to about 0.2 mm. If the thickness is less than the above range, the thickness is thin and may be torn during handling, and there may be problems such as quality defects in the process. Due to this, there may be problems with the winding quality and adhesion with the foam.

The polyolefin-based nonwoven fabric layer may have a basis weight of about 20 g/m 2 to about 40 g/m 2 . The polyolefin-based nonwoven fabric layer has a basis weight within the above range, thereby providing excellent adhesion strength and flame retardancy, and preventing contamination of caterpillars. In addition, the polyolefin-based nonwoven fabric layer constitutes a face material together with the metal layer and the glass scrim layer, and has a basis weight within the above range, thereby preventing a step difference with the glass scrim layer. Specifically, when the basis weight of the polyolefin-based nonwoven fabric layer is less than the above range, it may not be possible to smoothly compensate for the height difference in the width or length direction of the glass scrim layer, and the adhesion strength with the foam may be reduced. And, when the basis weight exceeds the above range, the flame retardancy may be reduced and manufacturing cost may increase.

The face material for the insulator may include a glass scrim layer to provide dimensional stability, and may improve the compressive strength of a building insulation including the same, and may exhibit improved adhesion strength. The glass scrim layer may have a network structure in which neighboring glass fibers are separated by a wide interval of about 5 mm to about 10 mm. In addition, the glass scrim has a network structure in which about 3 to about 8 and glass fibers are arranged side by side in each of the horizontal and vertical directions within a predetermined size of 1 inch * 1 inch. It can provide dimensional stability of insulation materials for construction.

The glass scrim layer may have a thickness of about 0.1 mm to about 0.3 mm. If the thickness is less than the above range, the dimensional stability effect may be insignificant and there may be no protective effect against external impact, and if it exceeds the thickness, there may be a problem in that the manufacturing cost increases.

The face material for the insulation includes a metal layer, by reflecting radiation in the infrared region, blocks outdoor solar radiation in summer, and preserves indoor heating radiation in winter to improve energy efficiency of buildings, and can exhibit flame retardancy there is.

The metal layer may have a thickness of about 15 μm to about 35 μm. If the thickness is less than the above range, the flame retardancy is lowered or the metal layer is easily scratched, and thus the flame retardant properties may not be expressed. There may be a problem.

The metal layer may include one selected from the group consisting of iron, stainless steel (SUS), aluminum, magnesium, copper, and combinations thereof. Specifically, the metal layer may include aluminum, and aluminum has a small specific gravity, high thermal and electrical conductivity, and strong corrosion resistance, so it can be easily processed into various shapes and provided with excellent flame retardancy.

The metal layer may be an aluminum thin film as a layer including an aluminum foil. In this way, by including an aluminum thin film, it is possible to realize flame retardancy, reinforce resistance to moisture and strength, and improve dimensional stability. And, it acts as a barrier layer for the foaming gas of the foam, and long-term thermal insulation properties can be implemented at a high level. The metal layer may be combined with the glass scrim layer to provide an excellent heat reflection effect, strength reinforcement, and excellent dimensional stability. The metal layer may be attached to a wall including concrete or mortar, and the polyolefin-based nonwoven fabric layer may be applied to be attached to the foam.

In the laminate, for example, each of the metal layer and the polyolefin-based non-woven fabric layer includes irregularities and has a certain surface roughness, and the contact surface area with the wall and the impregnated area of the foam composition and the foam It is possible to increase the contact surface area, thereby improving the adhesion strength. The laminate, for example, the metal layer and the polyolefin-based nonwoven fabric layer may include irregularities having a predetermined surface roughness by surface-modifying the surface by plasma or corona treatment. As a method of forming the unevenness on the surface, for example, there may be a method of UV treatment or a method of using an embossing roll or the like. Meanwhile, the present invention includes a metal layer such as aluminum foil, and the surface roughness is not well formed on the metal layer during UV treatment. And, when using an embossing roll or the like, a large surface roughness of a certain level or more, for example, roughness of several tens to hundreds of micrometers is formed, so it may be difficult to achieve a desired effect. And, in general, when an embossing roll or the like is used, the physical properties of the face material may be deteriorated when a certain amount of heat and pressure is applied. The face material is surface-modified by plasma or corona treatment, and includes irregularities having a certain surface roughness, and it is possible to achieve the desired effect by minimizing the deterioration of the physical properties of the face material.

The metal layer has a surface roughness (Ra) of about 10 nm to about 100 nm, and has improved adhesion strength to a wall including concrete or mortar, and may exhibit excellent structural stability. Surface roughness (roughness, Ra) refers to the average roughness of the center line, and may be measured using an atomic force microscope (AFM). When the surface roughness (Ra) of the metal layer is less than the above range, the effect of improving adhesion may be significantly reduced. And, when it exceeds the above range, the surface area is widened, but the adhesive force may be further reduced. For example, the face material is used for a heat insulating material, and when the roughness formed on the surface of the face material exceeds the above range, condensation occurs due to the temperature difference and absorbed moisture occurring during foam manufacturing and use of the heat insulating material, and accordingly It is easy to create a gap between the interfaces. Accordingly, as a result, the adhesive strength and the like may be lowered, and structural stability may be deteriorated.

The polyolefin-based nonwoven fabric layer may have a surface roughness (Ra) of about 100 nm to about 300 nm. In general, the heat insulating material can be prepared by discharging the foaming composition on the face material, and foaming and curing. At this time, the face material for the insulation includes the polyolefin-based non-woven fabric layer having a surface roughness (Ra) in the above range, while maintaining the outgasing performance of volatile gases, etc., the degree of impregnation of the foaming composition can be appropriately adjusted. there is. In addition, excellent adhesion strength and structural stability can be imparted by controlling the surface area in contact with the foam within a certain range.

The metal layer may have a contact angle with respect to water of about 0° to about 20°. The metal layer may exhibit excellent interfacial adhesion by having a hydrophilicity within the above range. In addition, since the metal layer has a water contact angle in the above range, even if an alkaline material of Ca(OH)2 is generated in concrete or mortar, the material rapidly spreads out and bubbles can be prevented from occurring there is. Accordingly, it is possible to prevent the occurrence of gaps between the interfaces despite long-term use, thereby providing excellent adhesion strength and structural stability. When the contact angle exceeds the above range, there may be problems in that corrosion resistance is lowered, air bubbles are generated to lower structural stability, and adhesive strength is lowered.

The polyolefin-based nonwoven fabric layer may exhibit a contact angle with respect to water of about 0° to about 95°. For example, it may exhibit a contact angle for water of about 0° to about 65°. The polyolefin-based nonwoven fabric layer may exhibit excellent interfacial adhesion to the foam including the phenol resin at a contact angle with respect to water within the above range. In particular, the phenolic foam contains a phenolic resin exhibiting high hydrophilicity including -OH, and the polyolefin-based nonwoven layer having a water contact angle in the above range can impart structural stability with excellent adhesion strength in relation to the phenolic foam. there is.

When the metal layer is treated with 0.25 ml of a 1 wt% Ca(OH)2 solution, bubbles may not occur. Accordingly, even if it is attached to a wall containing an alkaline material or a wall containing a mortar and used for a long period of time, no bubbles are generated between the interfaces and no gaps are formed, so structural stability can be exhibited with excellent adhesion.

The wall includes concrete or mortar, and the concrete or mortar exhibits alkalinity due to Ca(OH)2, causing a problem of corrosion of metal layers such as aluminum. Accordingly, in general, a coating layer is formed on the surface of the metal layer to prevent corrosion, but in this case, there is a problem in that the adhesion strength is lowered.

The face material for the insulator may not include a coating layer on any one surface of the metal layer. Accordingly, the adhesive strength may not be lowered, and at the same time, the face material for the insulator may exhibit excellent corrosion resistance.

The surface of the metal layer of the face material for the insulator may be surface-modified by plasma or corona treatment, and compared to a pure metal layer, it may have a structure in which metal-O bonding is increased as measured by X-ray photoelectron analysis (XPS). For example, the metal layer may be an aluminum foil layer, and Al-O bonding may be increased by about 5% to about 25% based on the pure aluminum foil layer. Accordingly, an oxide film can be formed on the surface of the metal layer without forming a separate coating layer, and improved structural stability can be provided with excellent adhesion strength.

The face material for the insulator may have an adhesion strength of about 30 kPa to about 60 kPa to a wall including concrete or mortar. And, the face material may exhibit excellent adhesion strength of about 300gf/25mm to about 500gf/25mm with respect to the foam. If the adhesive strength is less than the above range, there may be a problem that the face material is dropped. The face material for the insulator has an adhesion strength within the above range, so that, despite long-term use, it is possible to maintain excellent thermal insulation properties by preventing the penetration of moisture into the foam, and structural stability can minimize the damage of fire in the event of a fire. .

Another embodiment of the present invention comprises the steps of sequentially stacking a metal layer, a glass scrim layer, and a polyolefin-based nonwoven fabric layer to prepare a laminate; and forming a surface roughness by plasma treatment or corona treatment on the laminate, wherein the metal layer has a surface roughness (Ra) of 10 nm to 100 nm, and for a wall including concrete or mortar It provides a method of manufacturing a face material for an insulating material having an adhesive strength of 30 kPa to 60 kPa.

In general, when a coating layer is formed on the surface of a face material in order to impart corrosion resistance, there is a problem in that adhesion strength to a wall or the like is lowered. The face material for the insulator can exhibit improved adhesion strength, etc. with excellent corrosion resistance, without a separate additional process for forming a coating layer, thereby increasing production efficiency. As described above by the manufacturing method, it is possible to provide a face material for an insulator that can provide excellent structural stability with excellent adhesion strength, improved corrosion resistance, and minimize fire damage in the event of a fire. The matters regarding the face material for the insulator are the same as those described above, except for those specifically described below.

The manufacturing method includes manufacturing a laminate by sequentially laminating a metal layer, a glass scrim layer, and a polyolefin-based nonwoven fabric layer. And, it is possible to manufacture the face material for the insulating material, including the step of forming a surface roughness by plasma or corona treatment on the laminate.

Specifically, the plasma or corona treatment may be performed on the entire laminate or the surface of each of the metal layer and the polyolefin-based nonwoven fabric layer. The surface of the laminate may be modified through, for example, plasma treatment to form hydrophilic functional groups on the surfaces of the metal layer and the nonwoven fabric layer. Accordingly, as described above, it is possible to exhibit improved adhesion strength, improved hydrophilicity and corrosion resistance. The face material for the insulator can achieve the desired effect while minimizing the deterioration of the physical properties of the face material through plasma treatment.

In addition, the plasma treatment may be performed for about 5 seconds to about 600 seconds under a power of 5 W to about 20 W in atmospheric pressure (25° C., 1 atm) at atmospheric pressure (Air) plasma treatment. When the power and time of the plasma treatment satisfy the above ranges, it is possible to provide a required level of hydrophilic functional groups without damaging the laminate. When the plasma treatment exceeds the above range, the synergistic effect of the illuminance may be insufficient, which may be uneconomical.

By discharging the foaming composition between the face materials including the face material, foaming and curing in a heating furnace, the insulating material can be continuously manufactured. The foam formed in this way is formed using the above-mentioned face material, and foaming and curing are appropriately well controlled to exhibit excellent physical properties such as thermal conductivity, and excellent adhesion to walls, dimensional stability, and flame retardancy.

The foaming composition may include a thermosetting resin, for example, a phenol-based resin, a foam, and a curing agent. , The blowing agent may include one selected from the group consisting of a hydrofluoroolefin (HFO)-based compound, a hydrocarbon-based compound, and combinations thereof. Specifically, the hydrofluoroolefin-based compound is, for example, monochlorotrifluoropropene, trifluoropropene, tetrafluoropropene, pentafluoropropene, hexafluorobutene, and combinations thereof. It may include at least one selected from the group consisting of. And, the hydrocarbon-based compound may include a hydrocarbon having 1 to 8 carbon atoms. For example, the hydrocarbon-based compound is dichloroethane, propyl chloride, isopropyl chloride, butyl chloride, isobutyl chloride, pentyl chloride, isopentyl chloride, n-butane, isobutane, n- pentane, isopentane, cyclopentane, It may include at least one selected from the group consisting of hexane, heptane, cyclopentane, and combinations thereof.

When the thermosetting resin is a phenolic resin, the curing agent is an acid curing agent, and one selected from the group consisting of toluene sulfonic acid, xylene sulfonic acid, benzenesulfonic acid, phenol sulfonic acid, ethylbenzene sulfonic acid, styrene sulfonic acid, naphthalene sulfonic acid, and combinations thereof. Acid curing agents may be included.

The face material for the insulator may exhibit improved corrosion resistance along with excellent adhesion strength. And, it is possible to minimize the propagation speed of the fire when a fire occurs due to excellent structural stability.

Another embodiment of the present invention is a foam; and a face material attached to one side of the foam, wherein the face material includes a laminate in which a metal layer, a glass scrim layer and a polyolefin-based nonwoven fabric layer are sequentially stacked, the metal layer having a surface roughness of 10 nm to 100 nm ( It has roughness, Ra), and provides an insulating material having an adhesion strength of 30 kPa to 60 kPa to a wall containing concrete or mortar.

The heat insulating material may be continuously manufactured by disposing a face material on a conveyor belt, discharging a foaming composition between the face materials, and foaming and curing in a heating furnace. At this time, the foam is formed by discharging between the face materials, and foaming and curing are appropriately well controlled to exhibit excellent physical properties such as thermal conductivity, and the heat insulating material may exhibit excellent adhesion and corrosion resistance to walls and foams. And, with excellent structural stability, it is possible to minimize damage due to fire in the event of a fire.

2 is the present invention?? It is a schematic diagram schematically showing an insulating material including a face material according to another embodiment. The insulating material includes a foam. The foam may be a thermosetting foam, and the thermosetting foam with weak brittleness may exhibit excellent dimensional stability including the face material.

The foam may be a phenol foam exhibiting high hydrophilicity. The insulating material can provide structural stability with excellent adhesion strength in relation to the face material, including phenol foam.

The face material attached to any one surface of the foam includes a laminate in which a metal layer, a glass scrim layer and a polyolefin-based nonwoven fabric layer are sequentially stacked, and the metal layer has a surface roughness (Ra) of 10 nm to 100 nm. And, the adhesion strength to the wall including concrete or mortar is 30 kPa to 60 kPa. Matters regarding the face material and adhesion strength, etc. are the same as described above.

(Example)

Example 1:

An aluminum foil layer with a thickness of 25 μm from the outermost layer, a glass scrim layer with a thickness of 0.2 mm having a network structure in which five glass fibers are arranged side by side in each of the horizontal and vertical directions within a predetermined size of 1 inch * 1 inch, and a poly A face material was prepared by laminating a polypropylene nonwoven fabric layer having a basis weight of 30 g/cm 2 including propylene chop and glass fiber by thermocompression bonding.

Then, the plate was treated with atmospheric plasma at a power of 7.2 W, under normal pressure, for 15 seconds. Accordingly, the surface roughness (Ra) of the aluminum foil layer measured with an atomic force microscope (Atomic Force Microscope, AFM) is 10 nm, and the surface roughness (Ra) of the polypropylene nonwoven fabric is 100 nm became

Example 2:

Plasma treatment was performed for 300 seconds at a power of 7.2 W with respect to the face material, so that the surface roughness (Ra) of the aluminum foil layer was 50 nm, and the surface roughness (Ra) of the polypropylene nonwoven fabric was 200 nm. A face material for insulation was prepared in the same manner as in Example 1, except that

Example 3:

The plate was subjected to plasma treatment at a power of 7.2 W for 600 seconds, so that the surface roughness (Ra) of the aluminum foil layer measured with an atomic force microscope ((Atomic Force Microscope, AFM) was 100 nm, and the poly A face material for insulation was prepared in the same manner as in Example 1, except that the surface roughness (Ra) of the propylene nonwoven fabric was 300 nm.

Comparative Example 1:

UV/O3 treatment was performed for 300 seconds at a power of 0.025W with respect to the face material. Accordingly, Example 1 except that the surface roughness (Ra) of the aluminum foil layer measured with an atomic force microscope (Atomic Force Microscope, AFM) was 1 nm, and the surface roughness of the polypropylene nonwoven fabric was 30 nm. A face material for insulation was manufactured in the same manner as described above.

Comparative Example 2:

In the same manner as in Example 1, except that the surface roughness (Ra) of the aluminum foil layer was 1000 nm and the surface roughness of the polypropylene nonwoven fabric was 700 nm using an embossing roll for the face material, in the same manner as in Example 1. was prepared.

Comparative Example 3:

With respect to the face material, plasma treatment was performed for 2 seconds at a power of 7.2W, so that the surface roughness (Ra) of the aluminum foil layer was 3 nm, and the surface roughness (Ra) of the polypropylene nonwoven fabric was 50 nm. A face material for insulation was prepared in the same manner as in Example 1, except that

evaluation

The face materials of the Examples and Comparative Examples are continuously supplied so that the aluminum foil layer is attached to the caterpillar, and the phenol foamable resin composition is discharged between the face materials, and then foamed and cured to a thermosetting foam and a heat insulating material comprising the face materials of the Examples and Comparative Examples was prepared.

Experimental Example 1: Water contact angle (°)

The face materials of Examples and Comparative Examples were prepared as samples having a size of 50 mm x 60 mm, and contact angles were measured at three arbitrary points in the samples, and the average values thereof are shown in Table 1.

Specifically, on the aluminum foil layer of each specimen, a drop of distilled water (Di water) is dropped using a syringe, and the form in which the droplets are formed is enlarged with a microscope equipped with a contact angle measuring instrument (KRUSS, DSA100, Germany) to the left and right ends. The angle formed with the surface of the specimen at the critical point of was measured. When distilled water spreads sideways as soon as it falls, the contact angle is shown as 0°.

Experimental Example 2: Adhesive strength to concrete or mortar (kPa)

The insulating material including the face material of the Examples and Comparative Examples was prepared as a sample of 200 mm (width, W) X 200 mm (length, L) X 70 mm (thickness, T). And, the adhesion strength of the mortar was measured for the sample using an adhesion strength tester, UTM (Instron, UTM), respectively.

Specifically, according to the KS F 4716 method, the mortar was placed on the aluminum foil, which is the surface of the insulating face material, in a size of 40 mm (W) X 40 mm (L) X 2 mm (T), and cured for 2 weeks. After that, after bonding to the tensile jig with an epoxy adhesive, the adhesive strength was measured using the tester. And the result was described in Table 1.

Experimental Example 3: Adhesive strength to phenolic foam (gf/25mm)

Prepared as a sample of 200 mm (W) X 200 mm (L) X 70 mm (T) of the insulating material including the face material according to the Examples and Comparative Examples, and measured using an adhesion strength tester, UTM (Instron, UTM) did Specifically, the surface of the face plate was cut at intervals of 25 mm, the ends were fixed to a tensile jig, and 90° peeling from the foam at a tensile speed of 300 mm/min was measured. And the result was described in Table 1.

Experimental Example 4: Corrosion resistance (whether or not bubbles are generated)

Prepare the face material of Examples and Comparative Examples as a sample of size 50mm x 60mm, and drop 0.25ml of 1wt% Ca(OH)2 solution using a syringe at any three points on the aluminum foil layer of the sample using a syringe, and air bubbles Whether or not occurred was visually confirmed. In the case of no bubble generation, "O" was defined as "X", and the results are shown in Table 1 below.

water contact angle Adhesive strength to wall (kPa) Adhesive strength to foam (gf/25mm) corrosion resistance Example 1 12.78 42 350 O Example 2 0 43 365 O Example 3 0 46 425 O Comparative Example 1 45.71 21 250 X Comparative Example 2 65.97 20 265 X Comparative Example 3 40.57 25 285 X

It can be seen that the face material of the example has excellent adhesion strength to the wall and foam, and at the same time exhibits improved corrosion resistance, unlike the face material of the comparative example.

As described above, the present invention has been described with reference to the illustrated drawings, but the present invention is not limited by the embodiments and drawings disclosed in the present specification. It is obvious that variations can be made. In addition, although the effects of the configuration of the present invention are not explicitly described and described while describing the embodiments of the present invention, it is natural that the effects predictable by the configuration should also be recognized.

100: cotton for insulation
110: metal layer
120: glass scrim layer
130: polyolefin-based non-woven fabric layer
200: foam
1000: insulation

Claims (10)

It includes a laminate in which a metal layer, a glass scrim layer, and a polyolefin-based nonwoven fabric layer are sequentially laminated,
The metal layer has a surface roughness (roughness, Ra) of 10 nm to 100 nm,
Adhesive strength to a wall containing concrete or mortar is 30 kPa to 60 kPa
Cotton material for insulation.
According to claim 1,
The metal layer has a contact angle of 0° to 20° with respect to water.
Cotton material for insulation.
According to claim 1,
The laminate is surface-modified by plasma or corona treatment to have a surface roughness
Cotton material for insulation.
According to claim 1,
The face material does not include a coating layer on either side of the metal layer
Cotton material for insulation.
According to claim 1,
When the metal layer was treated with 0.25 ml of 1 wt% Ca(OH)2 solution, no bubbles were generated.
Cotton material for insulation.
According to claim 1,
The metal layer is attached to a wall comprising concrete or mortar, and the polyolefin-based non-woven fabric layer is applied to be attached to the foam,
Cotton material for insulation.
According to claim 1,
The face material has an adhesion strength to the foam of 300gf/25mm to 500gf/25mm
Cotton material for insulation.
manufacturing a laminate by sequentially stacking a metal layer, a glass scrim layer, and a polyolefin-based nonwoven fabric layer; and
Plasma or corona treatment on the laminate to form a surface roughness,
The metal layer has a surface roughness (roughness, Ra) of 10 nm to 100 nm,
Adhesive strength to a wall containing concrete or mortar is 30 kPa to 60 kPa
A method of manufacturing a face material for insulation.
In claim 8,
The plasma treatment is performed for about 5 seconds to about 600 seconds under a power of 5W to about 20W.
A method of manufacturing a face material for insulation.
foam; and
Including; a face material attached to any one surface of the foam;
The face material includes a laminate in which a metal layer, a glass scrim layer, and a polyolefin-based nonwoven fabric layer are sequentially stacked,
The metal layer has a surface roughness (roughness, Ra) of 10 nm to 100 nm,
Adhesive strength to a wall containing concrete or mortar is 30 kPa to 60 kPa
insulator.

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