JP2009215842A - Heat insulating material and heat insulation structure - Google Patents

Heat insulating material and heat insulation structure Download PDF

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JP2009215842A
JP2009215842A JP2008063188A JP2008063188A JP2009215842A JP 2009215842 A JP2009215842 A JP 2009215842A JP 2008063188 A JP2008063188 A JP 2008063188A JP 2008063188 A JP2008063188 A JP 2008063188A JP 2009215842 A JP2009215842 A JP 2009215842A
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heat insulating
insulating material
aluminum foil
resin
holes
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JP5119015B2 (en
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Masahiko Ikeda
昌彦 池田
Atsushi Matsuo
篤 松尾
Sayaka Takei
さやか 武井
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Asahi Fiber Glass Co Ltd
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Asahi Fiber Glass Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat insulating material of a foamed resin which is excellent in moisture permeability, nonflammable though the base material is a resin foam material, and useful for an outside heat insulation method. <P>SOLUTION: In the heat insulating material and a heat insulation structure, a sheet of aluminum foil (2) is bonded to at least one surface of the plate-like resin foam material (1). A plurality of holes (3) piercing the aluminum foil layer (2) are formed in the aluminum foil (2). The sum of areas of the holes (3) is 10 to 500 mm<SP>2</SP>per 100 cm<SP>2</SP>of the aluminum foil layer (2), and vapor resistance is 5 to 50 m<SP>2</SP>*h*mmHg/g. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、外張り断熱構造などに用いられる断熱材および該断熱材を用いた外張りなどの断熱構造に関する。   The present invention relates to a heat insulating material used for an outer heat insulating structure and the like, and a heat insulating structure such as an outer cover using the heat insulating material.

従来、特に冬期において、居住区間に快適さを与え、しかも暖房費用を節約するため、住宅の室外と室内とを仕切る壁面、屋根、間仕切りなどに断熱材を設ける断熱工法が広く行われている。このような住宅の断熱工法としては、従来、室内と室外とを仕切る壁面などの室外側に、発泡ウレタンなどの樹脂発泡体を設ける工法が知られているが、樹脂発泡体が比較的高価であるという課題があった。   2. Description of the Related Art Conventionally, particularly in winter, in order to give comfort to a living section and save heating costs, a heat insulating method is widely used in which a heat insulating material is provided on a wall surface, a roof, a partition, or the like that partitions the outside and inside of a house. As a heat insulation method for such a house, conventionally, a method in which a resin foam such as urethane foam is provided on the outside of a wall such as a wall that partitions the room from the outside is known, but the resin foam is relatively expensive. There was a problem that there was.

上記課題を解決するために、室内と室外とを仕切る駆体構造中の隣接する複数の柱（間柱）や垂木の間に繊維系断熱材を充填し、その室外側に比較的薄い樹脂発泡体を張設する断熱工法が提案されている。   In order to solve the above-mentioned problems, a fibrous insulating material is filled between a plurality of adjacent pillars (intercolumns) and rafters in the structure of the body that partitions the room and the outside, and a relatively thin resin foam is formed on the outdoor side. A thermal insulation method has been proposed.

しかしながら、上記の如き繊維系断熱材と樹脂発泡体との積層体を断熱層として用いた断熱工法では、以下のような問題がある。すなわち、高温多湿である室内側と低温低湿である屋外側との間に、上記積層体が存在すると、壁面の室内側に防湿層が設けられていても、壁面のコンセント孔などから湿気が壁内に侵入し、この湿気は透湿率の大きい繊維系断熱材層を透過した後、樹脂発泡体層に到達するが、この樹脂発泡体層は透湿性が殆どなく、樹脂発泡体層の表面で結露が発生し、該結露が繊維系断熱材層に吸収され、断熱性能が低下したり、繊維系断熱材層が重くなり、その形状が崩れたり、場合によっては壁面を構成している木質材料を腐らせるという課題がある。   However, the heat insulation method using the laminate of the fiber-based heat insulating material and the resin foam as described above has the following problems. That is, if the laminate is present between the indoor side, which is hot and humid, and the outdoor side, which is low temperature and low humidity, even if a moisture-proof layer is provided on the indoor side of the wall surface, moisture is blocked from the outlet holes on the wall surface. The moisture penetrates into the fiber insulation layer having a high moisture permeability and then reaches the resin foam layer. However, this resin foam layer has almost no moisture permeability and the surface of the resin foam layer. Condensation occurs, and the condensation is absorbed by the fiber-based heat insulating material layer, the heat insulating performance decreases, the fiber heat insulating material layer becomes heavy, its shape collapses, or in some cases the wood that constitutes the wall There is a problem of rotting materials.

上記課題を解決する工法として、上記樹脂発泡体層に非貫通孔を設けた断熱材が提案されている（特許文献１）。しかしながら、特許文献１に記載の断熱材は比較的厚く形成することが要求され、また、非貫通孔の形成が煩雑であり、さらに樹脂発泡体が可燃性であることから、十分な不燃性が要求される用途では使用が困難であった。
実公平２−１３６１８号公報 As a method for solving the above problem, a heat insulating material in which a non-through hole is provided in the resin foam layer has been proposed (Patent Document 1). However, the heat insulating material described in Patent Document 1 is required to be formed relatively thick, the formation of non-through holes is complicated, and the resin foam is flammable. It was difficult to use in the required application.
Japanese Utility Model Publication 2-13618

従って本発明の目的は、樹脂発泡体を基材としながらも、透湿性に優れかつ不燃性で、外張り断熱工法などに有用である発泡樹脂性断熱材を提供することである。   Accordingly, an object of the present invention is to provide a foamed resinous heat insulating material which is excellent in moisture permeability and incombustible, and is useful for an external heat insulating construction method, etc. while using a resin foam as a base material.

上記目的は以下の本発明によって達成される。すなわち、本発明は、板状の樹脂発泡体１の少なくとも片面にアルミニウム箔２が貼合され、該アルミニウム箔２にはアルミニウム箔層２を貫通する複数の孔３が設けられ、該複数の孔３の面積の総和が、アルミニウム箔層２の１００ｃｍ2当たり１０〜５００ｍｍ2であり、かつ透湿抵抗が５〜５０ｍ2・ｈ・ｍｍＨｇ／ｇであることを特徴とする断熱材を提供する。 The above object is achieved by the present invention described below. That is, in the present invention, an aluminum foil 2 is bonded to at least one surface of a plate-like resin foam 1, and the aluminum foil 2 is provided with a plurality of holes 3 penetrating the aluminum foil layer 2, and the plurality of holes 3 of the sum of the area, a 100 cm 2 per 10 to 500 mm 2 of the aluminum foil layer 2, and moisture permeation resistance to provide a heat insulator which is a 5~50m 2 · h · mmHg / g .

上記断熱材においては、貫通孔３の孔径が、０．１〜３．０ｍｍであり、各貫通孔の間隔（中心−中心）が１０〜２５ｍｍであること；熱伝導率が、０．０２８Ｗ／ｍ2・Ｋ以下であること；樹脂が、ポリウレタン樹脂、ポリイソシアネート樹脂およびポリイソシアヌレート樹脂から選ばれる少なくとも１種であること；およびＩＳＯ９６６０試験法による不燃性を有することが好ましい。 In the said heat insulating material, the hole diameter of the through-hole 3 is 0.1-3.0 mm, and the space | interval (center-center) of each through-hole is 10-25 mm; Thermal conductivity is 0.028 W / m 2 · K be less is; resin, is at least one selected from polyurethane resins, polyisocyanate resins and polyisocyanurate resin; preferably has a non-flammable by and ISO9660 test method.

また、本発明は、室内と室外を仕切る駆体中の複数の柱（垂木）１１間に繊維系断熱材１２が充填されており、繊維系断熱材１２の室外側の面に上記本発明の断熱材１３が配設されていることを特徴とする断熱構造を提供する。該断熱構造においては、繊維系断熱材１２と断熱材１３との間に構造用面材１４が配設されていること；および繊維系断熱材１２の室内側に、防湿層１５が形成されていることが好ましい。   Further, in the present invention, a fiber-based heat insulating material 12 is filled between a plurality of pillars (rafters) 11 in the body that partitions the room and the outdoors, and the surface of the fiber-based heat insulating material 12 on the outdoor side of the present invention is filled. Provided is a heat insulating structure in which a heat insulating material 13 is provided. In the heat insulating structure, a structural face material 14 is disposed between the fiber heat insulating material 12 and the heat insulating material 13; and a moisture-proof layer 15 is formed on the indoor side of the fiber heat insulating material 12. Preferably it is.

本発明によれば、樹脂発泡体を基材としながらも、透湿性に優れかつ不燃性で、外張り断熱工法などに有用である発泡樹脂性断熱材および該断熱材を用いた断熱構造を提供することができる。   ADVANTAGE OF THE INVENTION According to this invention, while using a resin foam as a base material, the foamed resin heat insulating material which is excellent in moisture permeability, is nonflammable, and is useful for an outside heat insulating method, and the heat insulating structure using the heat insulating material are provided. can do.

次に発明を実施するための最良の形態を図面を参照してさらに詳しく説明する。本発明の断熱材は、図１の一部斜視図に示すように、板状の樹脂発泡体１の一方の面または両面にアルミニウム箔２が貼合され、該アルミニウム箔２にはアルミニウム箔層２を貫通する複数の孔３が設けられていることを特徴としている。   Next, the best mode for carrying out the invention will be described in more detail with reference to the drawings. As shown in the partial perspective view of FIG. 1, the heat insulating material of the present invention has an aluminum foil 2 bonded to one surface or both surfaces of a plate-like resin foam 1, and an aluminum foil layer is attached to the aluminum foil 2. 2 is provided with a plurality of holes 3 penetrating 2.

本発明における樹脂発泡体１を構成する樹脂は如何なる樹脂でもよいが、例えば、ポリウレタン樹脂、ポリイソシアネート樹脂およびポリイソシアヌレート樹脂から選ばれる少なくとも１種であることが好ましい。特に好ましい樹脂は、特開２００７−９９８２２号公報に記載されているポリイソシアヌレート樹脂の発泡体であり、好ましい密度は２５〜６０ｋｇ／ｍ3である。密度が２５ｋｇ／ｍ3未満であると、強度的に不十分なため、強固な壁面が形成しにくくなり、一方、密度が６０ｋｇ／ｍ3を超えると、透湿性が劣るばかりでなく、一枚当たりの重量が大きくなり、取扱性が悪く、施工性が劣る。 Although the resin which comprises the resin foam 1 in this invention may be what kind of resin, it is preferable that it is at least 1 sort (s) chosen from a polyurethane resin, a polyisocyanate resin, and a polyisocyanurate resin, for example. A particularly preferable resin is a polyisocyanurate resin foam described in JP-A-2007-99822, and a preferable density is 25 to 60 kg / m 3 . If the density is less than 25 kg / m 3 , the strength is insufficient, so that it is difficult to form a strong wall surface. On the other hand, if the density exceeds 60 kg / m 3 , not only the moisture permeability is inferior, but also one sheet. The hit weight increases, handling is poor, and workability is poor.

上記発泡体１の厚みは約１０〜７０ｍｍの範囲が好ましく、２０〜３５ｍｍがより好ましい。厚みが１０ｍｍ未満であると厚みがばらつき易く、外装材の面に撓みが生じ易く、一方、厚みが７０ｍｍを超えると、樹脂分が増え、透湿性が十分ではなく、また、コスト的にも好ましくない。また、サイズに関しては、用途が壁用或いは屋根用などの用途により一概には規定されないが、取扱性の点から４５０〜１，０００ｍｍ×１，８２０〜３，１００ｍｍのサイズが好ましい。また、上記発泡体１の中心付近には、補強材４としてのガラス繊維層やガラスクロス層が設けられていてもよい。   The foam 1 has a thickness of preferably about 10 to 70 mm, and more preferably 20 to 35 mm. If the thickness is less than 10 mm, the thickness is likely to vary, and the surface of the exterior material is likely to bend. On the other hand, if the thickness exceeds 70 mm, the resin content increases and the moisture permeability is not sufficient, which is also preferable in terms of cost. Absent. In addition, regarding the size, the use is not generally defined by the use such as for walls or roofs, but a size of 450 to 1,000 mm × 1,820 to 3,100 mm is preferable from the viewpoint of handleability. Further, a glass fiber layer or a glass cloth layer as the reinforcing material 4 may be provided near the center of the foam 1.

上記発泡体１の片面または両面にはアルミニウム箔２が積層されており、該アルミニウム箔の厚みは５〜２５μｍの範囲であることが好ましい。アルミニウム箔の厚みが５μｍ未満であると破損し易く、製造上においても施工上においても好ましくない。一方、アルミニウム箔の厚みが２５μｍを超えると取扱がしにくく、製造がしにくく、また、コスト的にも好ましくない。これらのアルミニウム箔２の積層は、発泡体１の製造時において上面材および／または下面材としてアルミニウム箔を使用することで行われる（特開２００７−１７６９９０号公報参照）。   Aluminum foil 2 is laminated on one side or both sides of foam 1 and the thickness of the aluminum foil is preferably in the range of 5 to 25 μm. If the thickness of the aluminum foil is less than 5 μm, the aluminum foil is easily damaged, which is not preferable in terms of manufacturing and construction. On the other hand, when the thickness of the aluminum foil exceeds 25 μm, it is difficult to handle, difficult to produce, and not preferable in terms of cost. Lamination of these aluminum foils 2 is performed by using aluminum foil as an upper surface material and / or a lower surface material during the production of the foam 1 (see Japanese Patent Application Laid-Open No. 2007-176990).

本発明の主たる特徴は、上記アルミニウム箔積層樹脂発泡体１のアルミニウム箔２に、アルミニウム箔層２を貫通する複数の孔３を形成し、樹脂発泡体１に不燃性を付与するとともに、適当な透湿抵抗を付与し、断熱構造とした時に優れた結露防止性を付与した点にある。貫通孔３の形成は、例えば、上記特開２００７−１７６９９０号公報に記載の方法で面材付き発泡体を形成する際、面材として適当な孔を有するアルミニウム箔を用いて行ってもよく、アルミニウム箔付き発泡体を成形後に、連続的に針付ロールなどを用いて連続的に孔を形成してもよく、さらにはアルミニウム箔付き発泡体を適当に裁断した後に孔を形成してもよい。   The main feature of the present invention is that a plurality of holes 3 penetrating the aluminum foil layer 2 are formed in the aluminum foil 2 of the aluminum foil laminated resin foam 1 to impart incombustibility to the resin foam 1 and an appropriate property. It is in the point which provided the dew condensation prevention property when providing moisture-permeable resistance and setting it as the heat insulation structure. Formation of the through-hole 3 may be performed using, for example, an aluminum foil having an appropriate hole as a face material when forming a foam with a face material by the method described in JP-A-2007-176990. After forming the foam with aluminum foil, the holes may be continuously formed using a roll with a needle or the like, and further, the holes may be formed after appropriately cutting the foam with aluminum foil. .

上記で設ける貫通孔３の孔径や個数は特に限定されないが、アルミニウム箔層１００ｃｍ2当たり、孔の面積の総和が１０〜５００ｍｍ2であり、かつ断熱材としての透湿抵抗が５〜５０ｍ2・ｈ・ｍｍＨｇ／ｇ、好ましくは７〜３７ｍ2・ｈ・ｍｍＨｇ／ｇになる範囲の孔径および個数である。具体的には、例えば、貫通孔３の孔径を０．１〜３ｍｍ、好ましくは１ｍｍ以下とし、各貫通孔３の間隔（中心−中心）を１０〜２５ｍｍとすることで、上記透湿抵抗を好ましく達成することができる。また、例えば、孔径０．５ｍｍの孔を１００ｃｍ2当たり９〜８１個設けることでも上記透湿抵抗を好ましく達成することができる。透湿抵抗が５ｍ2・ｈ・ｍｍＨｇ／ｇ未満であると断熱性能が劣化する可能性があり、一方、透湿抵抗が５０ｍ2・ｈ・ｍｍＨｇ／ｇを超えると断熱材と駆体との間に結露が生じる可能性がある。 The diameter and number of the through holes 3 provided above are not particularly limited, but the total area of the holes is 10 to 500 mm 2 per 100 cm 2 of the aluminum foil layer, and the moisture permeability resistance as a heat insulating material is 5 to 50 m 2. The hole diameter and number are in the range of h · mmHg / g, preferably 7 to 37 m 2 · h · mmHg / g. Specifically, for example, the diameter of the through hole 3 is 0.1 to 3 mm, preferably 1 mm or less, and the interval (center-center) between the through holes 3 is 10 to 25 mm. Preferably it can be achieved. For example, the moisture resistance can be preferably achieved by providing 9 to 81 holes with a hole diameter of 0.5 mm per 100 cm 2 . If the moisture permeability resistance is less than 5 m 2 · h · mmHg / g, the heat insulation performance may be deteriorated. On the other hand, if the moisture permeability resistance exceeds 50 m 2 · h · mmHg / g, Condensation may occur between them.

樹脂発泡体の表面のスキン層には、アルミニウム箔層に貫通孔を設ける際に、孔を開けることも可能であり、これにより透湿抵抗の高い樹脂発泡体でも所望の透湿抵抗とすることができる。この場合、孔を開け過ぎると透湿抵抗が５ｍ2・ｈ・ｍｍＨｇ／ｇ未満となり、不燃性に劣り好ましくない。また、発泡体表面に孔を設けない場合は、貫通孔を多く設けても、透湿抵抗は使用する発泡体自体の透湿抵抗を下回ることなく、５ｍ2・ｈ・ｍｍＨｇ／ｇ以上であるが、アルミニウム箔層１００ｃｍ2当たりの孔の面積の総和が５００ｍｍ2を超えるため不燃性に劣り好ましくない。
また、本発明の断熱材は、その熱伝導率が、０．０２８Ｗ／ｍ2・Ｋ以下であることおよび断熱材がＩＳＯ９６６０試験法による不燃性を有することが好ましい。 It is possible to make a hole in the skin layer on the surface of the resin foam when providing a through hole in the aluminum foil layer, so that even a resin foam having a high moisture permeability resistance can have a desired moisture permeability resistance. Can do. In this case, if the hole is excessively formed, the moisture permeability resistance is less than 5 m 2 · h · mmHg / g, which is not preferable because it is incombustible. Moreover, when not providing a hole in the foam surface, even if many through holes are provided, the moisture permeability resistance is 5 m 2 · h · mmHg / g or more without falling below the moisture permeability resistance of the foam itself used. However, since the total area of holes per 100 cm 2 of the aluminum foil layer exceeds 500 mm 2 , the nonflammability is inferior.
Further, the heat insulating material of the present invention preferably has a thermal conductivity of 0.028 W / m 2 · K or less, and the heat insulating material has nonflammability according to the ISO 9660 test method.

次に本発明の断熱構造を壁の例で説明するが、本発明の断熱構造は壁構造に限定されず、屋根やその他の間仕切りの断熱構造であり得る。図２に示す例は、壁の断熱構造を図解的に説明する図であり、図示のように、本発明の断熱構造は、壁構造中の複数の柱１１（間柱）の間に繊維系断熱材１２が充填されており、必要に応じて構造用面材１４を介してその室外側の面に前記本発明の断熱材１３が張設されている。   Next, although the heat insulation structure of this invention is demonstrated with the example of a wall, the heat insulation structure of this invention is not limited to a wall structure, It can be a heat insulation structure of a roof or another partition. The example shown in FIG. 2 is a diagram for schematically explaining the heat insulation structure of the wall. As shown in the figure, the heat insulation structure of the present invention is a fiber-based heat insulation between a plurality of pillars 11 (intermediate pillars) in the wall structure. The material 12 is filled, and the heat insulating material 13 of the present invention is stretched on the outdoor surface via a structural surface material 14 as necessary.

上記で使用する繊維系断熱材１２は、従来の外張りなどの断熱構造に使用されているものであって、例えば、グラスウール、ロックウール、インシュレーションボードなどが用いられ、構造用面材１４としては、例えば、合板、ＯＳＢ、ダイライトなどが用いられる。   The fiber-based heat insulating material 12 used above is used in a heat insulating structure such as a conventional outer covering, and for example, glass wool, rock wool, insulation board or the like is used as the structural surface material 14. For example, plywood, OSB, die light or the like is used.

上記断熱構造においては、室内側にはさらに厚さ０．１〜０．２ｍｍ程度のポリエチレンフィルムなどの防湿層１５を設け、さらにその表面に石膏ボードなどの内装材１６を設けることができる。さらに断熱材１３の室外側表面には桟木１７を介して窯業系サイディングなどの外装材１８を設けて通気層１９を形成することで、透湿抵抗を室内側＞室外側とすることで、断熱材１３における結露を防ぎ、本発明の課題を解決することができる。   In the heat insulating structure, a moisture-proof layer 15 such as a polyethylene film having a thickness of about 0.1 to 0.2 mm can be further provided on the indoor side, and an interior material 16 such as a gypsum board can be further provided on the surface. Furthermore, the exterior surface of the heat insulating material 13 is provided with an exterior material 18 such as a ceramic siding through a pier 17 to form a ventilation layer 19 so that the moisture permeation resistance is indoor> outdoor. Condensation in the material 13 can be prevented and the problems of the present invention can be solved.

次に実施例および比較例を挙げて本発明をさらに具体的に説明する。
実施例１〜３、比較例１〜４
全厚２５ｍｍ、サイズ１００ｍｍ×１００ｍｍで、両面に７μｍのアルミニウム箔を積層したポリイソシアヌレート発泡断熱材（商品名ＡＦボード、旭ファイバーグラス（株）製）の両面に、孔径０．５ｍｍの孔を所定の個数設け、本発明の断熱材とした。また、比較例の断熱材として孔を形成しないもの（比較例１）、孔の数を１００ｃｍ2あたり５個としたもの（比較例２）、１，０００個としたもの（比較例３）、および比較例３において発泡体のスキン層にまで孔を開けたもの（比較例４）を用意した。 Next, the present invention will be described more specifically with reference to examples and comparative examples.
Examples 1-3, Comparative Examples 1-4
A hole with a hole diameter of 0.5 mm is formed on both sides of a polyisocyanurate foam insulation material (trade name AF board, manufactured by Asahi Fiber Glass Co., Ltd.) with a total thickness of 25 mm and a size of 100 mm × 100 mm, and 7 μm aluminum foil laminated on both sides. A predetermined number was provided as the heat insulating material of the present invention. Further, as the heat insulating material of the comparative example, a material that does not form holes (Comparative Example 1), a number of holes of 5 per 100 cm 2 (Comparative Example 2), and a number of 1,000 (Comparative Example 3), In Comparative Example 3, a foamed skin layer (Comparative Example 4) was prepared.

上記実施例および比較例の断熱材について、透湿抵抗（ｍ2・ｈ・ｍｍＨｇ／ｇ）をＪＩＳ Ａ １３２４（カップ法）によって測定し、不燃性をＩＳＯ ９６６０（コーンカロリー法）により測定し、熱伝導率（Ｗ／ｍ2・Ｋ）を［ＪＩＳＡ−１４１２−２ 熱絶縁体の熱抵抗および熱伝導率の測定方法（熱流計法）］により測定し、結露の有無を下記方法により測定し、下記表１に記載の結果を得た。 About the heat insulating material of the said Example and a comparative example, moisture-permeable resistance (m < 2 > * h * mmHg / g) is measured by JIS A1324 (cup method), nonflammability is measured by ISO 9660 (corn calorie method), The thermal conductivity (W / m 2 · K) was measured by [JISA-1412-2 Thermal insulation and thermal conductivity measurement method (heat flow meter method)] and the presence or absence of condensation was measured by the following method. The results described in Table 1 below were obtained.

Figure 2009215842
Figure 2009215842

［結露の有無の試験］
実施例１〜３、比較例１〜４の各断熱材を、全厚２５ｍｍ、サイズ４５０ｍｍ×４５０ｍｍの試験体とし、該試験体面にグラスウール層（厚み１００ｍｍ、サイズ４５０ｍｍ×４５０ｍｍ、密度１６ｇ／ｍ3）を積層し、さらにグラスウール層に防湿層（ポリエチレンフィルム、厚み５０μｍ、サイズ４５０ｍｍ×４５０ｍｍ）を積層して断熱構造とした。この構造体を、扉をサイズ４５０ｍｍ×４５０ｍｍに切り抜いた冷蔵庫の切り抜き部分に嵌め込み、境界部を密封した。この冷蔵庫を実験室内に設置し、その後冷凍庫内（外気側に相当する）を温度−５℃、湿度７０％とし、実験室内（室内側に相当する）を温度２０℃、湿度５０％とし、この条件下で１週間試験を実施した。その後、上記構造体の断熱材の室内側に結露が生じるか否かを確認した。その結果、透湿抵抗が高い比較例１、２の断熱材においては、結露が発生した。一方、実施例１〜３、比較例３、４の断熱材では、結露の発生は認められなかった。なお、比較例３、４の断熱材は不燃性において不合格である。 [Test for condensation]
The heat insulating materials of Examples 1 to 3 and Comparative Examples 1 to 4 were used as test bodies having a total thickness of 25 mm and a size of 450 mm × 450 mm, and a glass wool layer (thickness 100 mm, size 450 mm × 450 mm, density 16 g / m 3) was formed on the surface of the test body. ) And a moisture-proof layer (polyethylene film, thickness 50 μm, size 450 mm × 450 mm) was further laminated on the glass wool layer to obtain a heat insulating structure. This structure was fitted into a cutout portion of a refrigerator where the door was cut out to a size of 450 mm × 450 mm, and the boundary portion was sealed. This refrigerator is installed in the laboratory, and then the inside of the freezer (corresponding to the outside air) is set to a temperature of −5 ° C. and humidity is 70%, and the laboratory (corresponding to the indoor side) is set to a temperature of 20 ° C. and humidity is 50% The test was conducted for 1 week under the conditions. Thereafter, it was confirmed whether or not condensation occurred on the indoor side of the heat insulating material of the structure. As a result, condensation occurred in the heat insulating materials of Comparative Examples 1 and 2 having high moisture resistance. On the other hand, in the heat insulating materials of Examples 1 to 3 and Comparative Examples 3 and 4, no condensation was observed. In addition, the heat insulating material of the comparative examples 3 and 4 is disqualified in nonflammability.

本発明によれば、樹脂発泡体を基材としながらも、透湿性に優れかつ不燃性で、外張り断熱工法などに有用である発泡樹脂性断熱材および該断熱材を用いた断熱構造を提供することができる。   ADVANTAGE OF THE INVENTION According to this invention, while using a resin foam as a base material, the foamed resin heat insulating material which is excellent in moisture permeability, is nonflammable, and is useful for an outside heat insulating method, and the heat insulating structure using the heat insulating material are provided. can do.

本発明の断熱材を説明する斜視図。The perspective view explaining the heat insulating material of this invention. 本発明の断熱構造を説明する断面図。Sectional drawing explaining the heat insulation structure of this invention.

符号の説明Explanation of symbols

１：発泡体
２：アルミニウム箔
３：孔
４：補強材
１１：柱（間柱、垂木）
１２：繊維系断熱材
１３：断熱材
１４：構造用面材
１５：防湿層
１６：内装材
１７：桟木
１８：外装材
１９：通気層 1: Foam 2: Aluminum foil 3: Hole 4: Reinforcement material 11: Pillar (spacer, rafter)
12: Fiber-based heat insulating material 13: Heat insulating material 14: Structural face material 15: Moisture-proof layer 16: Interior material 17: Crosspiece 18: Exterior material 19: Ventilation layer

Claims (8)

板状の樹脂発泡体（１）の少なくとも片面にアルミニウム箔（２）が貼合され、該アルミニウム箔（２）にはアルミニウム箔層（２）を貫通する複数の孔（３）が設けられ、該複数の孔（３）の面積の総和が、アルミニウム箔層（２）１００ｃｍ2当たり１０〜５００ｍｍ2であり、かつ透湿抵抗が５〜５０ｍ2・ｈ・ｍｍＨｇ／ｇであることを特徴とする断熱材。 An aluminum foil (2) is bonded to at least one surface of the plate-like resin foam (1), and the aluminum foil (2) is provided with a plurality of holes (3) penetrating the aluminum foil layer (2). total area of the plurality of holes (3), and wherein the aluminum foil layer (2) and 100 cm 2 per 10 to 500 mm 2, and moisture permeation resistance is 5~50m 2 · h · mmHg / g Insulation. 貫通孔（３）の孔径が、０．１〜３．０ｍｍであり、各貫通孔の間隔（中心−中心）が１０〜２５ｍｍである請求項１に記載の断熱材。   The heat insulating material according to claim 1, wherein the diameter of the through hole (3) is 0.1 to 3.0 mm, and the interval (center-center) between the through holes is 10 to 25 mm. 熱伝導率が、０．０２８Ｗ／ｍ2・Ｋ以下である請求項１に記載の断熱材。 The heat insulating material according to claim 1, wherein the heat conductivity is 0.028 W / m 2 · K or less. 樹脂が、ポリウレタン樹脂、ポリイソシアネート樹脂およびポリイソシアヌレート樹脂から選ばれる少なくとも１種である請求項１に記載の断熱材。   The heat insulating material according to claim 1, wherein the resin is at least one selected from a polyurethane resin, a polyisocyanate resin, and a polyisocyanurate resin. ＩＳＯ９６６０試験法による不燃性を有する請求項１に記載の断熱材。   The heat insulating material according to claim 1, which has non-flammability according to an ISO 9660 test method. 室内と室外を仕切る駆体中の複数の柱（垂木）（１１）間に繊維系断熱材（１２）が充填されており、繊維系断熱材（１２）の室外側の面に請求項１に記載の断熱材（１３）が配設されていることを特徴とする断熱構造。   The fiber-based heat insulating material (12) is filled between a plurality of pillars (rafters) (11) in the driving body partitioning the room and the outdoor space, and the outdoor surface of the fiber heat-insulating material (12) A heat insulating structure characterized in that the heat insulating material (13) according to the description is arranged. 繊維系断熱材（１２）と断熱材（１３）との間に構造用面材（１４）が配設されている請求項６に記載の断熱構造。   The heat insulating structure according to claim 6, wherein a structural face material (14) is disposed between the fiber heat insulating material (12) and the heat insulating material (13). 繊維系断熱材（１２）の室内側に、防湿層（１５）が形成されている請求項６に記載の断熱構造。   The heat insulating structure according to claim 6, wherein a moisture-proof layer (15) is formed on the indoor side of the fiber-based heat insulating material (12).
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KR101355045B1 (en) * 2012-11-13 2014-01-27 한국건설기술연구원 Reflector type insulation, manufacturing method therof and building structure
JP2015078602A (en) * 2011-09-16 2015-04-23 積水化学工業株式会社 Lining thermal insulation panel, and wall using the same
JP2016014251A (en) * 2014-07-01 2016-01-28 フクビ化学工業株式会社 Foamed heat insulation material with non-moisture-permeable film

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CN104746830A (en) * 2015-04-14 2015-07-01 岑溪市新建球陶瓷有限公司 Waterproof insulating external wall panel

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Publication number Priority date Publication date Assignee Title
JP2015078602A (en) * 2011-09-16 2015-04-23 積水化学工業株式会社 Lining thermal insulation panel, and wall using the same
KR101355045B1 (en) * 2012-11-13 2014-01-27 한국건설기술연구원 Reflector type insulation, manufacturing method therof and building structure
JP2016014251A (en) * 2014-07-01 2016-01-28 フクビ化学工業株式会社 Foamed heat insulation material with non-moisture-permeable film

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