JP2012021288A - Member for building and building structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an adiabatic wall to which a vacuum heat insulation material is applied, and which is excellent in a heat insulation performance, has long-term performance stability, is easily constructed at a low cost, and is excellent in recyclability as well.SOLUTION: The member for building comprises a heat insulation panel for which a vacuum heat insulation material and a protective material are combined, and the vacuum heat insulation material includes a core material of glass wool, a getter agent, and a gas-barrier external wrapping material for storing the core material and the getter agent. In the vacuum heat insulation material for which the inside of the external wrapping material is vacuum-sealed, the protective material of a thickness equal to or more than that of a flat part at a bend part of the vacuum heat insulation material is provided.

Description

  The present invention relates to a building member and a building structure having heat insulation properties.

  In order to prevent global warming, as a measure for energy saving of building structures such as home appliances, industrial equipment and houses, in recent years, particularly high heat insulation for buildings has been demanded. At that time, if it is attempted to improve the performance of the heat insulating panel of the building member by increasing the thickness of the heat insulating layer, problems of securing the installation space and the construction method arise. In view of this, a heat insulating panel using a vacuum heat insulating material superior in heat insulating performance compared with glass wool or resin foam has been proposed. A vacuum heat insulating material is produced by putting a core material excellent in heat insulating properties into an outer packaging material having gas barrier properties and evacuating the inside.

  As a heat insulating material using a conventional vacuum heat insulating material, Patent Document 1 discloses a heat insulating material in which a vacuum heat insulating material is wrapped with a cover member, and examples of the cover member include soft foam resin, fibrous material, and elastomer. . Wrapping the vacuum insulation material with a soft cover member makes it difficult to damage the laminate film (outer packaging material) due to impact, friction, etc., so it is possible to prevent the vacuum insulation material from being broken, and long-term reliability of insulation performance Will improve.

  Moreover, as a heat insulation wall of the building which applied the conventional vacuum heat insulating material, in patent document 2, the heat insulation module using a vacuum heat insulating material and the heat insulating wall to which it is applied are shown. FIG. 6 shows a cross-sectional view of a wall of a building described in Patent Document 2. The heat insulation module 23 includes a vacuum heat insulating material 21 that is a rectangular plate-like body and a frame 24 attached to each side of the vacuum heat insulating material, and a connecting portion 25 for connection is provided on the outer periphery of the frame 24. The heat insulation module 23 is supported by pillars 28 provided between the inner wall 22 and the outer wall 27, and grooves 26 for receiving the coupling portions 25 of the heat insulation modules 23 and supporting the heat insulation modules 23 are provided on both side surfaces of the pillars 28. Yes. Thus, by making the vacuum heat insulating material 21 into a heat insulating module, the construction of the vacuum heat insulating material 21 on the wall is facilitated, and the wall of the building having excellent heat insulating properties is formed without increasing the wall thickness.

  Further, Patent Document 3 shows a heat insulating wall in which a vacuum heat insulating material is arranged on the upstream side of a flow of water vapor that is going to pass through a wall portion in a state where adjacent vacuum heat insulating materials are overlapped by a sealing portion. Has been. FIG. 7 shows a cross-sectional view of a wall of a building described in Patent Document 3. The adjacent vacuum heat insulating materials 31 are arranged at a position in contact with the inner wall 32 on the upstream side of the flow of water vapor that attempts to pass through the wall portion from the lower side to the upper side in FIG. ing. The mimetic portion 36 is disposed at the position of the column 34, and a space surrounded by the vacuum heat insulating material 31 and the column 34 is filled with a fiber-based or foamed resin-based heat insulating material 33. By arrange | positioning in this way, the heat insulation fall and the durability fall of a heat insulating material are prevented, without producing dew condensation inside the heat insulating material 33.

  Patent Document 4 discloses a fixing method in which a fin-shaped peripheral portion of a vacuum heat insulating material is bent and arranged so as to be in contact with a column side surface. FIG. 8 shows a cross-sectional view of a wall of a conventional building described in Patent Document 4. As shown in FIG. Reference numeral 40 is a heat insulating material, 42 is a ventilation layer, 43 is an exterior material, and 45 is an interior material. The vacuum heat insulating material 41 is installed so as to be in contact with the side surface of the column 44 by bending a fin-shaped peripheral edge portion 46 having no heat insulating properties. Since the vacuum heat insulating material 41 is held and fixed by the friction generated between the columns 44, the vacuum heat insulating material 41 is fixed between the columns by a simple construction of pushing the vacuum heat insulating material 41 between the columns 44. Yes.

JP 2006-76100 A JP 2003-27622 A JP 2008-255733 A JP 2008-261221 A

  In Patent Document 1, the vacuum heat insulating material is wrapped with a cover member such as a soft foam resin, a fiber, or an elastomer. As a main application, it is assumed that the body is in contact with a body such as a futon or mat. Application is difficult. Further, when the heat insulating material is bent, it is necessary to provide a portion without the core material, but the vacuum heat insulating effect is not exhibited in the portion without the core material, and the heat insulating performance as a whole is lowered.

  In the heat insulation wall shown in Patent Document 2, the use of connecting parts increases the cost. Moreover, since it is necessary to provide the pillar with a groove for receiving the frame connecting portion of the module, it takes time for construction.

  As in Patent Document 3, in the heat insulating wall arranged in a state where the adjacent vacuum heat insulating materials are overlapped with each other, the portion containing the core material of the vacuum heat insulating material does not cover the side surface portion of the column. Heat leakage from the side of the column cannot be sufficiently prevented.

  As in Patent Document 4, in a heat insulating wall that is arranged so as to be in contact with the column side surface by bending the fin-shaped peripheral portion of the vacuum heat insulating material, the portion containing the core material of the vacuum heat insulating material covers the side surface portion of the column. Therefore, it is not possible to sufficiently prevent heat leakage at the side portion of the column.

  The present invention has been made in view of the above-mentioned problems of the prior art, and has excellent heat insulation performance, long-term performance stability, low-cost and easy construction, and excellent recyclability. An object is to provide a building structure having a good building material to which the material is applied.

  The present invention is a building member comprising a heat insulating panel having a vacuum heat insulating material and a protective material covering the outer periphery of the vacuum heat insulating material, wherein the vacuum heat insulating material is a core material, a getter agent, the core material and the core A vacuum insulating material having a gas barrier outer packaging material that contains a getter agent and vacuum-sealing the inside of the outer packaging material, and a protective material having a thickness equal to or greater than a flat portion of the vacuum heat insulating material at the bent portion of the vacuum heat insulating material It is characterized by having.

  In the building member, the core of the vacuum heat insulating material is made of glass wool.

  In the building member, the thickness of the protective material in the flat portion of the vacuum heat insulating material is 1.0 mm or more and 2.00 mm or less.

  In the building member, the thickness of the protective material at the bent portion of the vacuum heat insulating material is 2.0 mm or more and 8.0 mm or less.

  Further, in a building member, as a protective material covering the vacuum heat insulating material, compression set (70 ° C., 22 h) is 54% or less and melt mass flow rate (hereinafter abbreviated as MFR) (230 ° C., 49 N) is 3 g / 10 It is characterized by using a polymer material of more than min.

In the building member, the heat conductivity of the heat insulating panel in which the vacuum heat insulating material is covered with a protective material is 10 mW · m ⁻¹ · K ⁻¹ or less.

  In the building member, the protective material includes any one of a styrene-based thermoplastic elastomer or an olefin-based thermoplastic elastomer.

  In the building member, the building member has a nailable portion.

  Further, in the building member, the building member is disposed so as to cover the side surface of the support material and the inner wall surface in a space surrounded by two support materials adjacent to at least the inner wall of the building. It is characterized by.

  Furthermore, the construction member is provided on a heat insulating construction surface of a house or the like.

  According to the present invention, a protective material is provided on the outer periphery of the vacuum heat insulating material to prevent damage to the outer packaging material of the vacuum heat insulating material during transportation and the like, and the protective material is disposed thicker than the other flat portions at the bent portion of the vacuum heat insulating material. Therefore, there is little performance degradation at the bent part.

  In addition, the presence of a layer having elasticity at room temperature on the surface of the vacuum heat insulating material allows it to be easily installed in the space surrounded by the two supporting materials adjacent to the inner wall without any gaps between them, and heat leakage -Moisture movement can be prevented, and the shape restoring force of the protective material generates a frictional force between the vacuum heat insulating material and the surrounding wall surface, preventing positional displacement after construction.

  In addition, when dismantling the building, the vacuum insulation material can be easily recycled, contributing to the reduction of waste and the reuse of resources.

It is sectional drawing of the heat insulation panel bending part of this invention. It is sectional drawing of the heat insulation construction surface of the building which shows Example 1 of this invention. It is the schematic diagram which expanded the edge part cross section of the heat insulation panel of this invention. It is a vertical sectional view of a building structure showing Example 26 of the present invention. It is explanatory drawing which shows the Example and comparative example of this invention. It is a horizontal sectional view of the wall of the building in a conventional example. It is a horizontal sectional view of the wall of the building in a conventional example. It is a horizontal sectional view of the wall of the building in a conventional example.

Hereinafter, embodiments of the present invention will be described in detail. The vacuum heat insulating material of the present invention is characterized in that the outer periphery is covered with a protective material, and the thickness of the protective material is equal to or greater than the flat portion at the bent portion of the vacuum heat insulating material.
[Core]
First, the core material of the vacuum heat insulating material has a function of a spacer that can withstand the compressive force due to the pressure difference between the inside and outside, and retains its shape, and is preferably a glass wool core material that can secure a sufficient void inside even when subjected to the compressive force. It is an excellent vacuum heat insulating material with a thermal conductivity of about 2.0 mW · m ⁻¹ · K ⁻¹ . The vacuum heat insulating material has an excellent initial thermal conductivity.

Conventional heat insulating materials such as urethane foam have a high thermal conductivity of about 20 mW · m ⁻¹ · K ⁻¹ or more, and the heat insulation performance is inferior to about 10 times or more compared to vacuum heat insulating materials.

The core material of the vacuum insulation material uses glass wool with an average fiber diameter of about 3-6μm that can secure sufficient voids inside and reduce thermal conductivity even under compressive stress due to atmospheric pressure inside and outside, and dry heat treatment at about 250 ° C And from which the adsorbed moisture has been removed. On the other hand, if the fiber diameter of glass wool is large, the contact of the fiber is close to the point contact to the line contact, and the thermal conductivity is increased by increasing the contact area, which is not preferable. Further, when the fiber diameter is extremely small, handling becomes inconvenient and glass wool becomes very expensive. In addition, glass wool preferably does not contain a binder or the like in order to avoid a decrease in internal vacuum due to outgassing and an increase in thermal conductivity. In addition, about the measurement of an average fiber diameter, the fiber diameter was measured under the magnification which contains about 10 fibers in a visual field using the scanning electron microscope, and the average value was calculated | required.
[Outer packaging materials]
Because of the gas that permeates through the laminated film of the outer packaging material or the moisture that adheres to the inside of the vacuum heat insulating material, etc., the degree of vacuum gradually decreases and the heat insulating performance also decreases accordingly. It is preferable to use it. In refrigerators, etc., vacuum insulation materials are often used to save energy, and the long-term reliability of vacuum insulation materials is subject to deterioration tests assuming about 10 to 15 years, but there are time constraints. For this reason, evaluation is performed using an Arrhenius plot that estimates the lifetime of electrical components.

  Further, as the outer packaging material having high barrier properties, a material that reflects the shape of the core material by pressure reduction sealing is preferable because an airtight portion is provided inside and the core material is covered. As such an outer packaging material, a laminate film having a heat welding layer as an innermost layer, an aluminum foil or an aluminum vapor deposition layer as a gas barrier layer as an intermediate layer, and a surface protective layer as an outermost layer can be applied. However, since the aluminum foil and the aluminum vapor deposition layer are good conductors of heat, the thickness is preferably 6 μm or less in order to suppress a decrease in heat insulation performance due to the heat bridge.

Based on the above, specific examples include high-density polyethylene, linear low-density polyethylene, and high-density polypropylene as the innermost layer, an ethylene-vinyl alcohol copolymer film having an aluminum vapor-deposited intermediate layer, and a puncture-resistant outermost layer. Examples thereof include a plastic laminate film using a polyamide film having excellent properties.
[Getter agent]
In addition, a getter agent was used to maintain the degree of vacuum inside the vacuum heat insulating material. The getter agent only needs to absorb gas such as carbon dioxide, oxygen, nitrogen, and water vapor, and specifically, dosonite, hydrotalcite, metal hydroxide, molecular sieves, silica gel, calcium oxide, zeolite, hydrophobic Zeolite, activated carbon, etc. can be used.

Next, the vacuum heat insulating material has a flat plate shape immediately after fabrication, and may be used with a part of it being bent as necessary. However, at the bent part, compressive stress is applied to the inner peripheral side and tensile is applied to the outer peripheral side. When stress acts, and excessive tensile stress acts on the outer peripheral side in particular, the inner core material is torn and the outer packaging material on the outer peripheral side is broken, leading to a decrease in heat insulation performance.
〔Protective layer〕
In the present invention, the durability and performance stability of the bent portion can be improved by providing a thick protective material at the bent portion. The thickness of the protective material located on the outer periphery of the vacuum heat insulating material of the present invention is preferably 2 mm or less in the flat portion in order to reduce the thermal conductivity of the heat insulating panel including the protective material. The thinner the protective material is, the lower the thermal conductivity of the entire insulation panel is. However, if the protective material is too thin, it will not perform its function as a protective material. More preferably, it is 2 mm or less.

  The bent portion preferably has a thickness of 2 mm or more in order to exhibit protection performance higher than that of the flat portion. However, if it is too thick, it tends to be lifted from the installation surface of the heat insulation panel during construction.

  The protective material of the present invention has a compression set (70 ° C., 22 hours) of 54% or less. Since a layer having elasticity at room temperature is provided as a protective material, there is a risk that even if a hard, sharp object is pressed from the outside of the thermal insulation panel, the vacuum of the vacuum thermal insulation material is broken compared to the case without the protective material As a result, the durability and performance stability can be improved.

  At the same time, this protective material is characterized in that MFR (230 ° C., 49 N) is 3 g / 10 min or more. Since the protective material has fluidity by heating, it is possible to easily dispose the protective material thicker by the bent portion. Further, when the house is demolished, the protective material softened by heating the heat insulating panel of the present invention can be easily recycled, which contributes to the reduction and reuse of waste.

  As the protective material located on the outer periphery of the vacuum heat insulating material of the present invention, a styrene resin, an olefin resin, or the like can be used. For building materials, styrene-based resins (polystyrene-polyethylene / polybutylene-polystyrene-based) and olefin resins having excellent weather resistance and water resistance are suitable.

You may perform a foaming process to the protective material located in the vacuum heat insulating material outer periphery of this invention. Since the thermal conductivity of the protective material is lower than when no bubbles are present inside the protective material, the thermal conductivity of the heat insulating panel including the protective material can be reduced, which is preferable.
[Construction]
The vacuum heat insulating material of the present invention is installed so as to cover the side surface and the inner wall surface of the support material in a space surrounded by two support materials adjacent to the inner wall of the building. If the side surface of the support material is not covered with the vacuum heat insulating material, heat leaks from the side surface of the support material to the outside of the building.

  On the other hand, in the present invention, since the vacuum heat insulating material covers not only the inner wall surface but also the side surface of the support material, heat leakage at the side surface portion of the support material can be suppressed. In this case, bending distortion occurs in the bent portion of the heat insulating panel. Excessive bending strain is not preferable because it may lead to a decrease in performance of the heat insulating panel. The bending strain increases as the radius of curvature decreases and as the thickness of the core of the vacuum heat insulating material inside the heat insulating panel increases. For this reason, it is preferable that the curvature radius of a bending part is 10 mm or more so that a bending distortion may not lead to the performance fall of a heat insulation panel. Further, the thickness of the core of the vacuum heat insulating material inside the heat insulating panel is preferably 10 mm or less. However, since the vacuum heat insulating material realizes high heat insulating performance by making the inside a decompressed space, a certain amount of thickness is required. For this reason, the thickness of the core material of the vacuum heat insulating material is more preferably 8 mm or more and 10 mm or less.

  About the positional relationship with the inner wall and exterior material of the heat insulation panel of this invention, it is preferable to coat | cover the inner wall side. If there is a space between the vacuum heat insulating material and the inner wall side, for example, when the room is heated in winter, the temperature rise in the room is transmitted through the inner wall and warms the air in the space that touches the inner wall. Becomes lighter and an air flow rising along the inner wall surface is generated. At this time, the cold air under the floor is sucked into the space between the inner wall and the heat insulating panel to cool the inner wall. As a result, the heat of the indoor heating escapes from the building due to the flow of air in the space. In order to prevent this, the heat insulation panel is constructed so as to cover the inner wall side.

  Since the protective material on the outer periphery of the vacuum heat insulating material of the present invention has elasticity at room temperature as described above, the surface of the heat insulating panel that is compressed and deformed during construction by making the outer size of the heat insulating panel slightly larger than the size of the installation place. A shape restoring force is generated in the protective material. Thereby, since a frictional force arises between the surface of the heat insulation panel, the surface of the surrounding inner wall, and the side surface of a support material, a heat insulation panel can be fixed easily and the position shift after construction can be prevented. In addition, in order to fix the heat insulation panel more firmly, the surface of the surrounding inner wall, the side surface of the support member, or the like may be bonded with an adhesive or an adhesive tape. At this time, the surface of the heat insulating panel, the surface of the surrounding inner wall, and the side surface of the support material are in contact with each other without a gap. As a result, heat leakage is suppressed, and movement of water vapor / humidity that attempts to pass through the walls / floors, etc., can be suppressed, and condensation inside the walls can be prevented.

  In the space on the exterior material side of the heat insulating panel of the present invention, there are cases where bracing for seismic reinforcement or water pipes may pass, and when water infiltrates into the wall etc. after heavy rain etc., the air permeability is good It is preferable not to fill with a heat insulating material or the like, since it dries more quickly and leads to prevention of condensation and mold.

  When the outer periphery of the vacuum heat insulating material of the present invention is covered with a protective material, it is preferable that the vacuum heat insulating material is sandwiched between two sheets of the protective material that is slightly larger than the vacuum heat insulating material and the peripheral edge of the protective material is heat sealed. At this time, it is preferable that the peripheral edge portion formed for sealing the core portion of the vacuum heat insulating material is folded. If the surface protective layer is formed without folding the peripheral edge portion, the end portion of the heat insulating panel becomes a portion having a poor vacuum heat insulating effect, and heat leaks from here.

  Examples of the present invention will be described below. In addition, this invention is not limited by this Example.

  FIG. 1 is a cross-sectional view showing a bent portion of a heat insulating panel of Example 1, and FIG. 2 is a horizontal cross-sectional view of a building wall showing a building member.

  In FIG. 1, the vacuum heat insulating material 1 includes a core material 7 and an outer packaging material 8 that encloses the core material 7 in a vacuum. A protective material 9 thicker than the flat portion F is provided at the bent portion B of the vacuum heat insulating material 1. In FIG. 2, the building member of Example 1 is provided with two bent portions B on a flexible heat insulating panel 5 whose surface is covered with a protective material 9, and the bent portion B has a flat portion F or more. The protective material 9 is arranged in thickness, and it is constructed so as to cover the opposing side surfaces of the two support materials 4 adjacent to the inner wall 2. Since the heat insulation panel 5 has flexibility, it can be bent and installed in the "U" shape at the site as shown in FIG.

The vacuum heat insulating material of Example 1 was produced as follows. First, as a vacuum insulation core material, an aluminum film with a size of 450 mm x 350 mm and a thickness of 30 μm is sandwiched in glass wool that does not contain a binder with an average fiber diameter of 4.3 μm, followed by a dry heat treatment at 250 ° C. for 1 hour. It was made by performing. Then, the getter that adsorbs the glass wool and gas in the outer packaging material made of high-density polyethylene, ethylene-vinyl alcohol copolymer, aluminum foil (about 6 μm), nylon, and polyethylene terephthalate as the outer packaging material made of laminate film. Packing agent (Molecular Sieve 13X), evacuating until 10 minutes with the rotary pump of the vacuum packaging machine, 10 minutes with the diffusion pump, and the internal pressure of the vacuum insulation becomes 1.5 Pa, then the end of the outer packaging material Sealed with heat seal. The size of the vacuum heat insulating material was 500 mm × 400 mm × 10 mm, and when the thermal conductivity was measured, it was 1.8 mW · m ⁻¹ · K ⁻¹ .

A protective material layer was formed on the outer periphery of the vacuum heat insulating material. Espolex SB manufactured by Sumitomo Chemical Co., Ltd. after folding the peripheral sealing part of the vacuum insulation material, 43% compression set (70 ° C, 22h), 3g / 10% MFR (190 ° C, 21.18N) A vacuum insulation material is sandwiched between two 1mm thick protective material sheets, which are foamed styrene thermoplastic elastomer, and the protective material sheet is heat sealed to form a protective layer, and the thermal conductivity is examined. As a result, it was 7.3 mW · m ⁻¹ · K ⁻¹ .

This vacuum insulating material with a protective material was molded into a simulated construction shape as shown in FIG. The Espolex SB styrene-based heat produced by Sumitomo Chemical Co., Ltd., which was heated and melted on a line that moved inward from the side of about 400 mm in length to the side of the plate-like vacuum heat insulating material that became the bent part, 100 mm inward A plastic elastomer was applied to make the protective material thickness of the bent part about 4 mm on one side. After air cooling to near room temperature, a φ20mm round bar was applied to the planned bending portion, bent at 90 ° at 10mm / min using a bending tester, and molded so that the cross-section became a “U” shape. This vacuum heat insulating material was placed in a high temperature bath at 60 ° C. and left for 30 days, and then the thermal conductivity was examined. As a result, it was 8.3 mW · m ⁻¹ · K ⁻¹ . It was a building member with little increase in thermal conductivity even in the deterioration test.

The produced vacuum heat insulating material with protective material was attached to a wooden frame simulating a wall of a wooden house. The wooden frame is made by bonding two wooden prisms of 50mm x 400mm x 100mm thickness between two wooden boards of 400mm x 400mm x 1mm in parallel, and has a hollow part of 300mm x 400mm x 100mm inside. In order to prevent heat leakage in the side part of the wooden frame by installing the vacuum heat insulating material with the protective material so that it has the same cross-sectional structure as FIG. 2 in this hollow part, a thermal conductivity of 2.0 mW · m separately prepared Samples for measurement were prepared by pasting 4 pieces of ^-1 · K ^-1 vacuum insulation materials without any gaps.

The above sample was attached to a heat flow meter, and in a house, the side corresponding to the inner wall was set to 30 ° C, the side corresponding to the outer wall was set to 10 ° C, and the heat flow rate was measured. It was a member.
The thermal conductivity and heat flow rate shown in FIG. 5 were evaluated using an AUTO-Λ / HC-071 type (heat flow meter method, average temperature 10 ° C.) manufactured by Eihiro Seiki Co., Ltd.

The vacuum heat insulating material of Example 2 was produced as follows. First, as a vacuum insulation core material, an aluminum film with a size of 450 mm x 350 mm and a thickness of 30 μm is sandwiched in glass wool that does not contain a binder with an average fiber diameter of 4.5 μm, followed by a dry heat treatment at 250 ° C. for 1 hour. It was made by performing. Then, the vacuum heat insulating material was produced using the laminate film similarly to Example 1. FIG. The size of the vacuum heat insulating material was 500 mm × 400 mm × 10 mm, and the thermal conductivity was measured and found to be 2.0 mW · m ⁻¹ · K ⁻¹ .

A protective layer was formed on the outer periphery of the vacuum heat insulating material. After folding the peripheral sealing part of the vacuum heat insulating material, 35% compression set (70 ° C, 22h), 50g / 10 min MFR (220 ° C, 98N), Espolex TPE olefin manufactured by Sumitomo Chemical Co., Ltd. A thermal insulation was formed by sandwiching a vacuum heat insulating material between two 1 mm thick protective material sheets, which were foamed from a thermoplastic elastomer, and heat-sealing the periphery of the protective material sheet to form a protective layer. However, it was 8.8 mW · m ⁻¹ · K ⁻¹ .

This vacuum heat insulating material with a protective material was molded into a simulated construction shape. The espolex TPE olefin-based heat produced by Sumitomo Chemical Co., Ltd., which was heated and melted on a line that moved inward from the side of approximately 400 mm in length to the inside of the plate-shaped vacuum heat insulating material that becomes the bent part, 100 mm inward A plastic elastomer was applied to make the protective material thickness of the bent part about 4 mm on one side. After air cooling to near room temperature, a φ20mm round bar was applied to the planned bending part, and it was bent at 90 ° at 10mm / min using a bending tester, so that the cross section was shaped like a “U”. This vacuum heat insulating material was placed in a high-temperature bath at 60 ° C. and left for 30 days, and the thermal conductivity was examined. As a result, it was 9.8 mW · m ⁻¹ · K ⁻¹ . It was a building member with little increase in thermal conductivity even in the deterioration test.

  The produced vacuum heat insulating material with a protective material was attached to a wooden frame simulating a wall of a wooden house in the same manner as in Example 1, and used as a measurement sample. This sample is attached to a heat flow meter. In a house, the side corresponding to the inner wall is set to 30 ° C, the side corresponding to the outer wall is set to 10 ° C, and the heat flow rate is measured to be 1.4 W. It was a member.

The vacuum heat insulating material of Example 3 was produced as follows. First, as a vacuum insulation core material, an aluminum film with a size of 450 mm x 350 mm and a thickness of 30 μm is sandwiched in glass wool that does not contain a binder with an average fiber diameter of 4.3 μm, followed by a dry heat treatment at 250 ° C. for 1 hour. It was made by performing. Thereafter, in the outer packaging material consisting of a laminate film, a high-density polyethylene of a heat-welded layer, an ethylene-vinyl alcohol copolymer subjected to aluminum deposition (about 50 nm), and an outer packaging material composed of polyethylene terephthalate and nylon subjected to aluminum deposition. Filled with glass wool and gas adsorbing getter agent (Molecular Sieves 13X), exhausted until 10 minutes with rotary pump of vacuum packaging machine, 10 minutes with diffusion pump, and internal pressure of vacuum insulation becomes 1.5 Pa The end of the outer packaging material was sealed with heat seal. The size of the vacuum heat insulating material was 500 mm × 400 mm × 10 mm, and the thermal conductivity was measured to be 1.7 mW · m ⁻¹ · K ⁻¹ .

A protective layer was formed on the outer periphery of the vacuum heat insulating material in the same manner as in Example 1, and the thermal conductivity was examined. The result was 7.2 mW · m ⁻¹ · K ⁻¹ . Furthermore, this vacuum heat insulating material with a protective material was molded into a simulated construction shape in the same manner as in Example 1. This vacuum heat insulating material was placed in a high-temperature bath at 60 ° C. and left for 30 days, and the thermal conductivity was examined. As a result, it was 8.2 mW · m ⁻¹ · K ⁻¹ . It was a building member with little increase in thermal conductivity even in the deterioration test.

  The produced vacuum heat insulating material with a protective material was attached to a wooden frame simulating a wall of a wooden house in the same manner as in Example 1, and used as a measurement sample. This sample is attached to a heat flow meter. In a house, the side corresponding to the inner wall is set to 30 ° C, the side corresponding to the outer wall is set to 10 ° C, and the heat flow rate is measured to be 1.4 W. It was a member.

The vacuum heat insulating material of Example 4 was produced as follows. First, as a vacuum insulation core material, an aluminum film with a size of 450 mm x 350 mm and a thickness of 30 μm is sandwiched in glass wool that does not contain a binder with an average fiber diameter of 4.5 μm, followed by a dry heat treatment at 250 ° C. for 1 hour. It was made by performing. Then, the vacuum heat insulating material was produced using the laminate film similarly to Example 3. The size of the vacuum heat insulating material was 500 mm × 400 mm × 10 mm, and the thermal conductivity was measured and found to be 1.9 mW · m ⁻¹ · K ⁻¹ .

A protective layer was formed on the outer periphery of the vacuum heat insulating material in the same manner as in Example 2, and the thermal conductivity was examined. The result was 8.7 mW · m ⁻¹ · K ⁻¹ . Furthermore, this vacuum heat insulating material with a protective material was molded into a simulated construction shape in the same manner as in Example 2. This vacuum heat insulating material was placed in a high temperature bath at 60 ° C. and left for 30 days, and then the thermal conductivity was examined. The result was 9.7 mW · m ⁻¹ · K ⁻¹ . It was a building member with little increase in thermal conductivity even in the deterioration test.

  The produced vacuum heat insulating material with a protective material was attached to a wooden frame simulating a wall of a wooden house in the same manner as in Example 1, and used as a measurement sample. This sample is attached to a heat flow meter. In a house, the side corresponding to the inner wall is set to 30 ° C, the side corresponding to the outer wall is set to 10 ° C, and the heat flow rate is measured to be 1.4 W. It was a member.

The vacuum heat insulating material of Example 5 was produced as follows. First, as a vacuum insulation core material, an aluminum film with a size of 450 mm x 350 mm and a thickness of 30 μm is sandwiched in glass wool that does not contain a binder with an average fiber diameter of 4.4 μm, followed by a dry heat treatment at 250 ° C. for 1 hour. It was made by performing. Thereafter, in the outer packaging material consisting of a laminate film, a high-density polyethylene of a heat-welded layer, an ethylene-vinyl alcohol copolymer subjected to aluminum deposition (about 50 nm), and an outer packaging material composed of polyethylene terephthalate and nylon subjected to aluminum deposition. Filled with glass wool and gas adsorbing getter agent (Molecular Sieves 13X), exhausted until 10 minutes with rotary pump of vacuum packaging machine, 10 minutes with diffusion pump, and internal pressure of vacuum insulation becomes 1.5 Pa The end of the outer packaging material was sealed with heat seal. The size of the vacuum heat insulating material was 500 mm × 400 mm × 10 mm, and when the thermal conductivity was measured, it was 1.8 mW · m ⁻¹ · K ⁻¹ .

A protective layer was formed on the outer periphery of the vacuum heat insulating material. After folding the peripheral sealing part of the vacuum heat insulating material, 35% compression set (70 ° C, 22h), 50g / 10 min MFR (220 ° C, 98N), Espolex TPE olefin manufactured by Sumitomo Chemical Co., Ltd. A thermal insulation was formed by sandwiching a vacuum heat insulating material between two 1 mm thick protective material sheets, which were foamed from a thermoplastic elastomer, and heat-sealing the periphery of the protective material sheet to form a protective layer. However, it was 8.6 mW · m ⁻¹ · K ⁻¹ .

This vacuum heat insulating material with a protective material was molded so that the bending angle of the bent portion was 90 degrees or more. The espolex TPE olefin-based heat produced by Sumitomo Chemical Co., Ltd., which was heated and melted on a line that moved inward from the side of approximately 400 mm in length to the inside of the plate-shaped vacuum heat insulating material that becomes the bent part, 100 mm inward A plastic elastomer was applied to make the protective material thickness of the bent part about 4 mm on one side. After air cooling to near room temperature, a φ20mm round bar was applied to the planned bending part, and it was bent to 135 degrees from the initial state at 10 mm / min using a bending tester, and formed into an angle of 45 degrees. This vacuum heat insulating material was placed in a high-temperature bath at 60 ° C. and left for 30 days, and the thermal conductivity was examined. As a result, it was 9.8 mW · m ⁻¹ · K ⁻¹ . It was a building member with little increase in thermal conductivity even in the deterioration test.
[Comparative Example 1]

  As a comparative example of the present invention, a simulation sample of a heat insulation construction surface was prepared by applying a vacuum heat insulating material whose outer periphery was covered with a protective material so as to cover only the inner wall surface, and the heat penetration flow rate was measured.

The vacuum heat insulating material of the comparative example 1 was produced as follows. First, as a vacuum insulation core material, an aluminum film with a size of 250 mm x 350 mm and a thickness of 30 μm is sandwiched in glass wool that does not contain a binder with an average fiber diameter of 4.4 μm, followed by a dry heat treatment at 250 ° C. for 1 hour. It was made by performing. Thereafter, in the outer packaging material consisting of a laminate film, a high-density polyethylene of a heat-welded layer, an ethylene-vinyl alcohol copolymer subjected to aluminum deposition (about 50 nm), and an outer packaging material composed of polyethylene terephthalate and nylon subjected to aluminum deposition. Filled with glass wool and gas adsorbing getter agent (Molecular Sieves 13X), exhausted until 10 minutes with rotary pump of vacuum packaging machine, 10 minutes with diffusion pump, and internal pressure of vacuum insulation becomes 1.5 Pa The end of the outer packaging material was sealed with heat seal. The size of the vacuum heat insulating material was 300 mm × 400 mm × 10 mm, and when the thermal conductivity was measured, it was 1.8 mW · m ⁻¹ · K ⁻¹ .

A protective layer was formed on the outer periphery of the vacuum heat insulating material. Espolex SB manufactured by Sumitomo Chemical Co., Ltd. after folding the peripheral sealing part of the vacuum insulation material, 43% compression set (70 ° C, 22h), 3g / 10% MFR (190 ° C, 21.18N) A vacuum insulation material is sandwiched between two 1mm thick protective material sheets, which are foamed styrene thermoplastic elastomer, and the protective material sheet is heat sealed to form a protective layer, and the thermal conductivity is examined. As a result, it was 7.3 mW · m ⁻¹ · K ⁻¹ . Furthermore, this vacuum heat insulating material with a protective material was placed in a high-temperature bath at 60 ° C. and left for 30 days, and the thermal conductivity was examined. As a result, it was 8.3 mW · m ⁻¹ · K ⁻¹ . It was a building member with little increase in thermal conductivity even in the deterioration test.

The produced vacuum heat insulating material with protective material was attached to a wooden frame simulating a wall of a wooden house. The wooden frame is made by bonding two wooden prisms of 50mm x 400mm x 100mm thickness between two wooden boards of 400mm x 400mm x 1mm in parallel, and has a hollow part of 300mm x 400mm x 100mm inside. In order to prevent heat leakage in the side part of the wooden frame by installing the vacuum heat insulating material with the protective material so that it has the same cross-sectional structure as FIG. 2 in this hollow part, a thermal conductivity of 2.0 mW · m separately prepared Samples for measurement were prepared by pasting 4 pieces of ^-1 · K ^-1 vacuum insulation materials without any gaps.

The sample was attached to a heat flow meter, and in a house, the side corresponding to the inner wall was set to 30 ° C., the side corresponding to the outer wall was set to 10 ° C., and the heat flow rate was measured to be 1.7 W. Since the side surface portion of the support material was not covered with the vacuum heat insulating material, the heat flow rate increased by about 21%, and the building member had poor heat insulating performance.
[Comparative Example 2]

  As Comparative Example 2, a simulation sample of a heat insulation construction surface was prepared by applying a vacuum heat insulating material whose outer periphery was covered with a protective material so as to cover only the inner wall surface, and the heat penetration flow rate was measured.

The vacuum heat insulating material of the comparative example 2 was produced as follows. First, as a vacuum insulation core material, an aluminum film with a size of 250 mm x 350 mm and a thickness of 30 μm is sandwiched in glass wool that does not contain a binder with an average fiber diameter of 4.3 μm, followed by a dry heat treatment at 250 ° C. for 1 hour. It was made by performing. Then, the getter that adsorbs the glass wool and gas in the outer packaging material made of high-density polyethylene, ethylene-vinyl alcohol copolymer, aluminum foil (about 6 μm), nylon, and polyethylene terephthalate as the outer packaging material made of laminate film. Packing agent (Molecular Sieve 13X), evacuating until 10 minutes with the rotary pump of the vacuum packaging machine, 10 minutes with the diffusion pump, and the internal pressure of the vacuum insulation becomes 1.5 Pa, then the end of the outer packaging material Sealed with heat seal. The size of the vacuum heat insulating material was 300 mm × 400 mm × 10 mm, and when the thermal conductivity was measured, it was 1.8 mW · m ⁻¹ · K ⁻¹ .

A protective layer was formed on the outer periphery of the vacuum heat insulating material. After folding the peripheral sealing part of the vacuum heat insulating material, 35% compression set (70 ° C, 22h), 50g / 10 min MFR (220 ° C, 98N), Espolex TPE olefin manufactured by Sumitomo Chemical Co., Ltd. A thermal insulation was formed by sandwiching a vacuum heat insulating material between two 1 mm thick protective material sheets, which were foamed from a thermoplastic elastomer, and heat-sealing the periphery of the protective material sheet to form a protective layer. However, it was 8.6 mW · m ⁻¹ · K ⁻¹ . Furthermore, this vacuum heat insulating material with a protective material was placed in a high-temperature bath at 60 ° C. and allowed to stand for 30 days, and the thermal conductivity was examined. The result was 9.6 mW · m ⁻¹ · K ⁻¹ . It was a building member with little increase in thermal conductivity even in the deterioration test.

The produced vacuum heat insulating material with protective material was attached to the surface corresponding to the inner wall of the wooden frame in the same manner as in Comparative Example 1, and the heat flow rate was measured. Since the side surface portion of the support material was not covered with the vacuum heat insulating material, the heat flow rate increased by about 21%, and the building member had poor heat insulating performance.
[Comparative Example 3]

  As Comparative Example 3, a vacuum heat insulating material whose outer periphery was covered with a protective material was constructed so as to cover the inner wall 2 and the opposite side surfaces of two adjacent support materials 4 as shown in FIG. A simulated sample of the heat-insulated construction surface without thick material was prepared, and the heat flow rate was measured.

The vacuum heat insulating material of the comparative example 3 was produced as follows. First, as a vacuum insulation core material, an aluminum film with a size of 450 mm x 350 mm and a thickness of 30 μm is sandwiched in glass wool that does not contain a binder with an average fiber diameter of 4.5 μm, followed by a dry heat treatment at 250 ° C. for 1 hour. It was made by performing. Then, the vacuum heat insulating material was produced using the laminate film similarly to the comparative example 2. The size of the vacuum heat insulating material was 500 mm × 400 mm × 10 mm, and the thermal conductivity was measured and found to be 2.0 mW · m ⁻¹ · K ⁻¹ .

A protective layer was formed on the outer periphery of the vacuum heat insulating material in the same manner as in Comparative Example 1, and the thermal conductivity was examined. As a result, it was 7.5 mW · m ⁻¹ · K ⁻¹ . Furthermore, this vacuum heat insulating material with a protective material was molded into a simulated construction shape. A plate-shaped vacuum heat insulating material to be bent is applied to a round bar of φ20mm on a line that has been moved inward by 100mm in parallel from a side of about 400mm in length, and is bent to 90 degrees at 10mm / min using a bending tester. Was shaped like a “U”. This vacuum heat insulating material was placed in a high-temperature bath at 60 ° C. and left for 30 days, and then the thermal conductivity was examined. The result was 17.5 mW · m ⁻¹ · K ⁻¹ . Since the protective material was not thickly disposed at the bent portion, the thermal conductivity was remarkably increased by the deterioration test, and the building member was inferior in heat insulating performance.

The manufactured vacuum heat insulating material with a protective layer was attached to the surface corresponding to the inner wall of the wooden frame in the same manner as in Comparative Example 1, and the heat flow rate was measured. Although the side surface portion of the support material is covered with a vacuum heat insulating material, the protective material is not thickly arranged at the bent portion, so that the heat penetration flow rate is increased by about 21%, and the building member has poor heat insulating performance.
[Comparative Example 4]

  As Comparative Example 4, a vacuum heat insulating material whose outer periphery was covered with a protective material was constructed so as to cover the opposing surfaces of the inner wall 2 and two adjacent support materials 4 as shown in FIG. A simulated sample of a heat-insulated construction surface that does not have a large thickness was prepared, and the heat flow rate was measured.

The vacuum heat insulating material of the comparative example 4 was produced as follows. First, as a vacuum insulation core material, an aluminum film with a size of 450 mm x 350 mm and a thickness of 30 μm is sandwiched in glass wool that does not contain a binder with an average fiber diameter of 4.4 μm, followed by a dry heat treatment at 250 ° C. for 1 hour. It was made by performing. Then, the vacuum heat insulating material was produced using the laminate film similarly to the comparative example 1. The size of the vacuum heat insulating material was 500 mm × 400 mm × 10 mm, and when the thermal conductivity was measured, it was 1.8 mW · m ⁻¹ · K ⁻¹ .

A protective layer was formed on the outer periphery of the vacuum heat insulating material in the same manner as in Comparative Example 2, and the thermal conductivity was examined. As a result, it was 8.6 mW · m ⁻¹ · K ⁻¹ . Furthermore, this vacuum heat insulating material with a protective material was molded into a simulated construction shape. A plate-shaped vacuum heat insulating material to be bent is applied to a round bar of φ20mm on a line that has been moved inward by 100mm in parallel from a side of about 400mm in length, and is bent to 90 degrees at 10mm / min using a bending tester. Was shaped like a “U”. This vacuum heat insulating material was placed in a high-temperature bath at 60 ° C. and allowed to stand for 30 days, and then the thermal conductivity was examined. The result was 18.6 mW · m ⁻¹ · K ⁻¹ . Since the protective material was not thickly disposed at the bent portion, the thermal conductivity was remarkably increased by a deterioration test, and the building member was inferior in heat insulation performance.

  The manufactured vacuum heat insulating material with a protective layer was attached to the surface corresponding to the inner wall of the wooden frame in the same manner as in Comparative Example 1, and the heat flow rate was measured. Although the side surface portion of the support material is covered with a vacuum heat insulating material, the protective material is not thickly arranged at the bent portion, so that the heat penetration flow rate is increased by about 21%, and the building member has poor heat insulating performance.

  Example 6 shown in FIG. 4 shows an example in which the building member of the present invention is used in a building structure. In addition, since FIG. 4 is sectional drawing in the cut surface containing the intermediate line of the pillar of a building structure and a pillar, the vicinity of a pillar or a pillar is not drawn. In the building structure, a pillar is assembled on the structural member 19 on the concrete foundation 18 and the heat insulating panel 5 is installed so as to cover the surface of the inner wall (or ceiling plate, floor plate) 2 and the side surface of the supporting member (column etc.). The building member of Example 6 is composed of a heat insulating panel in which a vacuum heat insulating material and a protective material are combined. The vacuum heat insulating material includes a core material made of glass wool, and the protective material is formed of a styrene thermoplastic elastomer or the like. And a heat insulating panel of a building member in which the vacuum heat insulating material is disposed in the protective material.

At this time, the heat insulation panel of the building member was produced as follows. For the vacuum insulation material, a glass wool core and gas adsorption getter agent are placed in an outer packaging made of a laminate film, and sealed in a vacuum packaging machine to have a thermal conductivity of approximately 2.0 mW · m ^-1 · K ^-1 A high performance vacuum heat insulating material was used. In addition, two sheets of foamed styrene thermoplastic elastomer were used as protective materials for the vacuum heat insulating material, and the thermal conductivity was 7.5 mW · m ^-1 by sandwiching the vacuum heat insulating material between them and heat-sealing the periphery. -A high-performance insulation panel of about K- ¹ was used. Furthermore, in order to improve the heat insulation performance as a building structure, a styrene-based thermoplastic elastomer softened by heating is applied to the planned bending portion of the heat insulation panel, and the inner wall is bent at 90 degrees with a radius of curvature of 10 mm or more at this part. It installed so that the surface of 2 and the side surface of a support material might be coat | covered. By installing the heat insulation panel so as to cover the surface of the inner wall 2, heat leakage from the room is suppressed, and since there is a space on the outer wall side, air permeability is good and the effect of suppressing condensation inside the wall is also obtained. .

  Since the nailable portion is provided on the surface of the heat insulating panel of Example 6, the position can be fixed by nail as necessary. By installing a heat insulation panel using a vacuum heat insulating material with excellent heat insulation performance so as to cover the inner wall surface and the side surface of the support material, the effect of maintaining the heat insulation performance for a long period of time compared to those without a heat insulation panel installed As a result, it is possible to provide a building structure such as a house that is excellent in energy saving effect.

  FIG. 5 is an explanatory diagram showing the specifications of Examples 1 to 5 of the present invention and Comparative Examples 1 to 4 in comparison.

  Due to the presence of the protective material on the outer periphery of the vacuum heat insulating material, the outer packaging material of the vacuum heat insulating material is prevented from being damaged due to contact with surrounding objects even during transportation to the construction site, etc., and contributes to maintaining heat insulating performance. Furthermore, since the protective material is disposed thicker than the other parts at the bent portion, performance degradation at the bent portion is small. Furthermore, the presence of a layer having elasticity at room temperature on the surface of the vacuum heat insulating material allows it to be easily installed in the space surrounded by the two supporting materials adjacent to the inner wall without any gaps between them and heat leakage.・ Moisture movement can be prevented.

  As a result, the energy-saving property of the building can be improved and it can help to prevent global warming. Furthermore, since a frictional force is generated between the vacuum heat insulating material and the surrounding wall surface by the shape restoring force of the protective material on the surface, displacement after construction is also prevented. Further, when the building is demolished, the protective material for the vacuum heat insulating material of the present invention can be easily recycled, which contributes to the reduction of waste and the reuse of resources.

DESCRIPTION OF SYMBOLS 1 ... Vacuum heat insulating material, 2 ... Inner wall, 3 ... Outer wall, 4 ... Support material, 5 ... Thermal insulation panel, 6 ... Peripheral part, 7 ... Core material, 8 ... Outer packaging material, 9 ... Protective material

Claims (10)

  A building member provided with a heat insulating panel having a vacuum heat insulating material and a protective material covering the outer periphery of the vacuum heat insulating material, the vacuum heat insulating material containing a core material, a getter agent, the core material and the getter agent A vacuum insulating material having a gas barrier outer packaging material and vacuum-sealing the inside of the outer packaging material, wherein the bent portion of the vacuum heat insulating material has a protective material having a thickness equal to or greater than the flat portion of the vacuum heat insulating material. Characteristic building material.   The building member according to claim 1, wherein a core material of the vacuum heat insulating material is made of glass wool.   The building member according to claim 1 or 2, wherein the thickness of the protective material in the flat portion of the vacuum heat insulating material is 1.0 mm or more and 2.00 mm or less.   The building member according to claim 1 or 2, wherein the thickness of the protective material at the bent portion of the vacuum heat insulating material is 2.0 mm or more and 8.0 mm or less.   In the building member according to any one of claims 1 to 4, as a protective material covering the vacuum heat insulating material, compression set (70 ° C, 22h) is 54% or less and a melt mass flow rate (230 ° C, 49N) uses a polymer material of 3 g / 10 min or more. The building member according to any one of claims 1 to 5, wherein a thermal conductivity of a heat insulating panel in which the vacuum heat insulating material is covered with a protective material is 10 mW · m ^-1 · K ^-1 or less. Characteristic building material.   The building member according to any one of claims 1 to 6, wherein the protective material includes any one of a styrene-based thermoplastic elastomer or an olefin-based thermoplastic elastomer.   The building member according to any one of claims 1 to 7, wherein the building member has a nailable portion.   The building member according to any one of claims 1 to 8, wherein the building member has a side surface of the support member in a space surrounded by at least two support members adjacent to the inner wall of the building, and An architectural member arranged to cover the inner wall surface.   A building structure comprising the building member according to any one of claims 1 to 9 on a heat insulating construction surface of a house or the like.

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