JP2008286290A - Tubular thermal insulation material for piping - Google Patents

Tubular thermal insulation material for piping Download PDF

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JP2008286290A
JP2008286290A JP2007130948A JP2007130948A JP2008286290A JP 2008286290 A JP2008286290 A JP 2008286290A JP 2007130948 A JP2007130948 A JP 2007130948A JP 2007130948 A JP2007130948 A JP 2007130948A JP 2008286290 A JP2008286290 A JP 2008286290A
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heat insulating
piping
insulating material
resin
layer
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JP5166771B2 (en
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Masahiro Nishii
雅宏 西井
Satoshi Tanaka
智 田中
Hideaki Takezaki
秀昭 竹崎
Toshihiro Tamai
俊洋 玉井
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Sekisui Chemical Co Ltd
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Sekisui Chemical Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a tubular thermal insulation material for piping and thermal insulation piping, which is easily manufactured at a low cost and exhibits high thermal insulation performance. <P>SOLUTION: The tubular thermal insulation material for piping comprising a resin foam layer 2 and a reflection material layer 3 for preventing heat transfer by radiation, is provided with at least one layer of the reflection material layer (a metal plate such as an SUS steel plate, an iron plate, an aluminum plate, metal foil such as aluminum, a resin plate, a resin film, or the like) above the middle point in total thickness toward the surface. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、簡易に低コストで製造することができ、かつ、高い断熱性能を発揮することが可能な配管用管状断熱材及び断熱配管に関する。 The present invention relates to a tubular heat insulating material for piping and heat insulating piping that can be easily manufactured at low cost and can exhibit high heat insulating performance.

従来から、給水用又は給湯用配管には、給湯器から、台所、風呂等の水の使用場所までの熱の損失を抑えるために、配管の断熱性が必要とされている。また、地熱利用空調システム又は地熱利用融雪システムに利用される配管でも、地熱採取場所又は地熱を蓄熱した蓄熱槽等の熱源から、空調又は融雪実施場所までの熱の損失を抑えるために、配管の断熱性が必要とされている。
このような配管としては、一般的には、発泡したポリエチレン樹脂、ポリスチレン樹脂等を用いてパイプを被覆してなる断熱管が用いられている。
Conventionally, pipes for water supply or hot water supply have been required to have heat insulation of pipes in order to suppress heat loss from a water heater to a place where water is used such as a kitchen and a bath. In addition, pipes used in geothermal air conditioning systems or geothermal snow melting systems can also be used to reduce heat loss from the heat source such as a geothermal sampling site or a heat storage tank that stores geothermal heat to the air conditioning or snow melting site. Thermal insulation is needed.
As such a pipe, generally, a heat insulating pipe formed by covering a pipe with foamed polyethylene resin, polystyrene resin or the like is used.

しかしながら、近年、給水用又は給湯用配管、又は、地熱利用空調システム又は地熱利用融雪システムにおいては、更に高い断熱性を有する配管が要求されており、従来使用されてきた発泡ポリエチレン樹脂等を用いた断熱配管では、断熱性能が不充分となっていた。 However, in recent years, pipes for water supply or hot water supply, or a geothermal utilization air-conditioning system or a geothermal snow melting system are required to have a pipe having higher heat insulation properties, and conventionally used foamed polyethylene resin or the like is used. The heat insulation performance was insufficient in the heat insulation piping.

そこで、より高い断熱性能を実現すべく、例えば、断熱配管において発泡したポリエチレン樹脂等からなる樹脂層を厚くする方法が検討されている。このように、断熱材として使用する樹脂層の厚さを厚くすることによって、断熱配管の断熱性能を向上させることができる。
しかしながら、樹脂層の厚さを厚くした場合には、その分だけ配管貫通部を大きく確保する必要が生じることから、配管施工時の手間やコストがかかってしまうという問題があった。
Therefore, in order to realize higher heat insulation performance, for example, a method of increasing the thickness of a resin layer made of polyethylene resin foamed in heat insulation piping has been studied. Thus, the heat insulation performance of heat insulation piping can be improved by thickening the thickness of the resin layer used as a heat insulating material.
However, when the thickness of the resin layer is increased, it is necessary to secure a large pipe penetration portion accordingly, and there is a problem that labor and cost at the time of pipe construction are increased.

これに対して、例えば、特許文献1には、外管と内管との間に、多重の反射材層を設けてなる断熱配管であって、外管と内管との間が真空状態に封止された断熱配管が開示されている。このような断熱配管は、樹脂層の厚さを厚くすることなく、充分な断熱性能を有するものとなる。 On the other hand, for example, Patent Document 1 discloses a heat insulating pipe in which multiple reflecting material layers are provided between an outer tube and an inner tube, and the space between the outer tube and the inner tube is in a vacuum state. A sealed insulated pipe is disclosed. Such heat insulation piping has sufficient heat insulation performance without increasing the thickness of the resin layer.

しかしながら、この方法では、内部を真空状態にするために手間がかかり、コストが高くなってしまうという問題があった。また、複数の反射層を設ける必要もあることから、更に、製造にかかるコストが問題となっていた。
そのため、簡易かつ低コストで製造することができ、充分な断熱性能を発揮することができる断熱材が求められていた。
特開平6−241382号公報
However, this method has a problem that it takes a lot of time to make the inside in a vacuum state, resulting in an increase in cost. In addition, since it is necessary to provide a plurality of reflective layers, the cost for manufacturing has become a problem.
Therefore, there has been a demand for a heat insulating material that can be manufactured simply and at low cost and can exhibit sufficient heat insulating performance.
JP-A-6-241382

本発明は、上記現状に鑑み、簡易に低コストで製造することができ、かつ、高い断熱性能を発揮することが可能な配管用管状断熱材及び断熱配管を提供することを目的とする。 An object of this invention is to provide the tubular heat insulating material for piping and heat insulation piping which can be manufactured simply and at low cost, and can exhibit high heat insulation performance in view of the said present condition.

本発明は、樹脂発泡体層及び反射材層からなる配管用管状断熱材であって、総厚の半分より表面側に少なくとも1層の前記反射材層が設けられている配管用管状断熱材である。
以下に本発明を詳述する。
The present invention is a tubular heat insulating material for piping comprising a resin foam layer and a reflective material layer, wherein the tubular heat insulating material for piping is provided with at least one reflective material layer on the surface side from half of the total thickness. is there.
The present invention is described in detail below.

本発明者らは、鋭意検討の結果、樹脂発泡体層及び反射材層からなる配管用管状断熱材において、反射材層の位置を最適化することによって、配管を被覆する断熱材として使用する場合、真空状態での封止等の工程を行ったり、反射材層を多重に設けたりする必要なく、充分な断熱性を付与することができるため、簡易に低コストで製造することができ、かつ、高い断熱性能を発揮することが可能となることを見出し、本発明を完成させるに至った。 As a result of intensive studies, the inventors of the present invention, in a tubular heat insulating material for pipes composed of a resin foam layer and a reflective material layer, optimize the position of the reflective material layer and use it as a heat insulating material that covers the pipe. In addition, it is not necessary to perform a process such as sealing in a vacuum state or to provide multiple reflective material layers, and can provide sufficient heat insulation, so that it can be easily manufactured at low cost, and The present inventors have found that it is possible to exhibit high heat insulation performance and have completed the present invention.

本発明の配管用管状断熱材は、総厚の半分より表面側に少なくとも1層の前記反射材層が設けられている。このように、総厚の半分より表面側に反射材層を有することによって、多重の反射材層を設けることなく、効果的に断熱性を向上させることができる。総厚の半分より内面側に設けられていると、充分な断熱性を発揮することができないことがある。 In the tubular heat insulating material for piping according to the present invention, at least one of the reflective material layers is provided on the surface side from the half of the total thickness. Thus, by having a reflective material layer on the surface side from half of the total thickness, it is possible to effectively improve heat insulation without providing multiple reflective material layers. If it is provided on the inner surface side from half of the total thickness, sufficient heat insulation may not be exhibited.

上記樹脂発泡体層としては、熱可塑性樹脂の発泡体からなるものを用いることができる。
上記熱可塑性樹脂は熱伝導率が低いため、このような発泡体を用いることによって、熱伝導率を充分に低下させることができ、本発明の配管用管状断熱材は高い断熱性能を発揮することが可能となる。
As said resin foam layer, what consists of a foam of a thermoplastic resin can be used.
Since the thermoplastic resin has a low thermal conductivity, by using such a foam, the thermal conductivity can be sufficiently lowered, and the tubular heat insulating material for piping of the present invention exhibits high heat insulating performance. Is possible.

上記熱可塑性樹脂の発泡体としては特に限定されず、例えば、ポリエチレン樹脂、ポリプロピレン樹脂、ポリウレタン樹脂、ポリエステル樹脂、ポリスチレン樹脂等の発泡体を用いることができる。なかでも、ポリエチレン樹脂発泡体が好ましい。ポリエチレン樹脂発泡体を用いることによって、得られる断熱配管の耐久性、断熱性能をより高めることが可能となる。 The thermoplastic resin foam is not particularly limited, and for example, a foam such as a polyethylene resin, a polypropylene resin, a polyurethane resin, a polyester resin, or a polystyrene resin can be used. Among these, a polyethylene resin foam is preferable. By using the polyethylene resin foam, it is possible to further improve the durability and heat insulating performance of the heat insulating piping obtained.

上記ポリエチレン樹脂発泡体の発泡倍率の好ましい下限は5倍、好ましい上限は60倍である。5倍未満であると、熱伝導率を充分に低下させることができないことがある。 The preferable lower limit of the expansion ratio of the polyethylene resin foam is 5 times, and the preferable upper limit is 60 times. If it is less than 5 times, the thermal conductivity may not be sufficiently reduced.

上記ポリエチレン樹脂発泡体の発泡径の好ましい上限は1mmである。
上記発泡径が小さいほど、熱伝導率を低下させることができる。1mmを超えると、熱伝導率を充分に低下させることができないことがある。
A preferable upper limit of the foam diameter of the polyethylene resin foam is 1 mm.
The smaller the foam diameter, the lower the thermal conductivity. If it exceeds 1 mm, the thermal conductivity may not be sufficiently reduced.

上記樹脂発泡体層の厚さとしては特に限定されないが、好ましい下限は0.5mm、好ましい上限は20cmである。0.5mm未満であると、高い断熱性能を発揮できないことがある。20cmを超えると、断熱配管の施工に用いた場合、配管施工時の手間やコストがかかってしまう場合がある。より好ましい下限は5mm、より好ましい上限は10mmである。 Although it does not specifically limit as thickness of the said resin foam layer, A preferable minimum is 0.5 mm and a preferable upper limit is 20 cm. If it is less than 0.5 mm, high heat insulation performance may not be exhibited. When it exceeds 20 cm, when it is used for the construction of heat insulating piping, it may take time and cost at the time of piping construction. A more preferable lower limit is 5 mm, and a more preferable upper limit is 10 mm.

上記反射材層は、反射率が90%以上の反射材からなることが好ましい。
このような反射材を用いることによって、本発明の配管用管状断熱材において、熱線が反射されて放射される熱が小さくなり、本発明の配管用管状断熱材は高い断熱性能を発揮する。
上記反射率が90%未満であると、得られる断熱材の断熱性能が不充分となることがある。
なお、上記反射率は、JIS A 1423に準拠して、赤外線放射温度計による放射率の簡易測定方法により放射率を測定し、下記式(1)から求めることができる。
(反射率)=1−(放射率)(%) (1)
The reflective material layer is preferably made of a reflective material having a reflectance of 90% or more.
By using such a reflective material, in the tubular heat insulating material for piping of the present invention, heat radiated is reflected to be radiated, and the tubular heat insulating material for piping of the present invention exhibits high heat insulating performance.
When the reflectance is less than 90%, the heat insulating performance of the obtained heat insulating material may be insufficient.
In addition, the said reflectance measures an emissivity by the simple measuring method of the emissivity with an infrared radiation thermometer based on JISA1423, and can be calculated | required from following formula (1).
(Reflectance) = 1- (Emissivity) (%) (1)

上記反射率が90%以上の反射材としては特に限定されず、例えば、金属板、金属箔、樹脂板、樹脂フィルム等が挙げられる。
上記金属板としては特に限定されず、例えば、SUS鋼板、鉄板、アルミ板等が挙げられる。上記金属箔としては特に限定されず、例えば、SUS鋼箔、鉄箔、アルミ箔等が挙げられる。なかでも、コスト等の観点から、アルミ箔を用いることが好ましい。
上記樹脂板、樹脂フィルムとしては特に限定されず、例えば、ポリ塩化ビニル樹脂、ポリエチレン樹脂、ポリプロピレン樹脂、ポリウレタン樹脂、ポリエステル樹脂、ポリスチレン樹脂等の発泡体等が挙げられる。
The reflective material having a reflectance of 90% or more is not particularly limited, and examples thereof include a metal plate, a metal foil, a resin plate, and a resin film.
It does not specifically limit as said metal plate, For example, a SUS steel plate, an iron plate, an aluminum plate etc. are mentioned. It does not specifically limit as said metal foil, For example, SUS steel foil, iron foil, aluminum foil etc. are mentioned. Especially, it is preferable to use an aluminum foil from the viewpoint of cost and the like.
The resin plate and the resin film are not particularly limited, and examples thereof include foams such as polyvinyl chloride resin, polyethylene resin, polypropylene resin, polyurethane resin, polyester resin, and polystyrene resin.

上記反射材層の厚さとしては、輻射効果は表面積に依存されるため、特に限定されないが、ハンドリングの観点から、好ましい上限は5mmである。5mmを超えると、断熱配管の施工に用いた場合、配管施工時の手間やコストがかかってしまうことがある。 The thickness of the reflective material layer is not particularly limited because the radiation effect depends on the surface area, but from the viewpoint of handling, the preferred upper limit is 5 mm. When it exceeds 5 mm, when it is used for the construction of heat insulating piping, it may take time and cost at the time of piping construction.

本発明の配管用管状断熱材において、上記反射材層は、少なくとも1層設けられていればよいが、複数層設けられていることが好ましい。複数層設けられることによって、より優れた断熱性能を得ることができる。 In the tubular heat insulating material for piping according to the present invention, at least one reflecting material layer may be provided, but a plurality of layers are preferably provided. By providing a plurality of layers, better heat insulation performance can be obtained.

本発明の配管用管状断熱材の総厚さとしては特に限定されないが、好ましい下限は0.5mm、好ましい上限は20cmである。0.5mm未満であると、高い断熱性能を発揮できないことがある。20cmを超えると、断熱配管の製造に用いた場合、配管施工時の手間やコストがかかってしまうことがある。 Although it does not specifically limit as total thickness of the tubular heat insulating material for piping of this invention, A preferable minimum is 0.5 mm and a preferable upper limit is 20 cm. If it is less than 0.5 mm, high heat insulation performance may not be exhibited. When it exceeds 20 cm, when it is used for the production of heat-insulated piping, it may take time and cost when constructing the piping.

本発明の配管用管状断熱材を製造する方法としては特に限定されず、例えば、樹脂発泡体を押出成形することによって樹脂発泡体層を形成し、該樹脂発泡体層上に、帯状の反射材からなる反射材層を形成し、更に、該反射材層上に、樹脂発泡体を押出成形することによって樹脂発泡体層を形成する方法等が挙げられる。
このように、本発明の配管用管状断熱材は、断熱性を付与するために真空状態で封止する工程を行ったり、反射材層を多重に設けたりする必要がないため、簡易に低コストで製造することが可能となる。
なお、本発明の配管用管状断熱材を用いて配管を被覆する場合、本発明の配管用管状断熱材を予め製造した後、本発明の配管用管状断熱材の塑性加工等することによって、配管の外周に本発明の配管用管状断熱材からなる配管用管状断熱材層を形成してもよく、配管の外周に樹脂発泡体を押出成形することによって樹脂発泡体層を形成し、該樹脂発泡体層の外周に帯状の反射材を螺旋状に巻回することによって反射材層を形成し、更に、該反射材層の外周に樹脂発泡体を押出成形することによって樹脂発泡体層を形成することによって、本発明の配管用管状断熱材を形成してもよい。
The method for producing the tubular heat insulating material for piping of the present invention is not particularly limited. For example, a resin foam layer is formed by extruding a resin foam, and a strip-shaped reflecting material is formed on the resin foam layer. And a method of forming a resin foam layer by extruding a resin foam on the reflector layer.
As described above, the tubular heat insulating material for piping according to the present invention does not require a step of sealing in a vacuum state to provide heat insulating properties, and it is not necessary to provide a plurality of reflecting material layers, so that it is easy and low cost. Can be manufactured.
In addition, when covering piping using the tubular heat insulating material for piping of this invention, after manufacturing the tubular heat insulating material for piping of this invention previously, by carrying out the plastic working etc. of the tubular heat insulating material for piping of this invention, piping A tubular heat insulating material layer for piping made of the tubular heat insulating material for piping of the present invention may be formed on the outer periphery of the resin, and a resin foam layer is formed by extruding a resin foam on the outer periphery of the piping, and the resin foam A reflector layer is formed by spirally winding a strip-shaped reflector around the outer periphery of the body layer, and a resin foam layer is formed by extruding a resin foam around the outer periphery of the reflector layer. By this, the tubular heat insulating material for piping of the present invention may be formed.

樹脂からなる配管の外周に、本発明の配管用管状断熱材からなる配管用管状断熱材層を形成することによって断熱配管を製造することができる。
なお、上記断熱配管において、本発明の配管用管状断熱材からなる配管用管状断熱材層は、少なくとも一層形成されていればよいが、複数層形成されることが好ましい。上記配管用管状断熱材層は、一層形成されれば高い断熱性能を発揮することができるが、複数層形成されることによって、より高い断熱性能を発揮することが可能となる。
A heat insulating pipe can be manufactured by forming a tubular heat insulating material layer for piping made of the tubular heat insulating material for piping of the present invention on the outer periphery of the pipe made of resin.
In addition, in the said heat insulation piping, although the tubular heat insulating material layer for piping which consists of the tubular heat insulating material for piping of this invention should just be formed at least one layer, it is preferable that multiple layers are formed. If the said tubular heat insulating material layer for piping is formed one layer, it can exhibit a high heat insulation performance, but it becomes possible to exhibit a higher heat insulation performance by forming multiple layers.

上記樹脂からなる配管を構成する樹脂としては特に限定されず、例えば、ポリ塩化ビニル樹脂、ポリエチレン樹脂、ポリプロピレン樹脂、ポリウレタン樹脂、ポリエステル樹脂、ポリスチレン樹脂等が挙げられる。 It does not specifically limit as resin which comprises piping which consists of the said resin, For example, a polyvinyl chloride resin, a polyethylene resin, a polypropylene resin, a polyurethane resin, a polyester resin, a polystyrene resin etc. are mentioned.

本発明の断熱配管を製造する方法としては特に限定されず、例えば、本発明の配管用管状断熱材を塑性加工等することによって、配管の外周に配管用管状断熱材層を一体的に被覆形成する方法;配管の外周に樹脂発泡体を押出成形することによって樹脂発泡体層を形成し、該樹脂発泡体層の外周に帯状の反射材を螺旋状に巻回することによって反射材層を形成し、更に、該反射材層の外周に樹脂発泡体を押出成形することによって樹脂発泡体層を形成する方法等が挙げられる。なかでも、配管の外周に配管用管状断熱材層を一体的に被覆形成する方法が好ましい。
このような樹脂からなる配管と、前記配管の外周に形成された本発明の配管用管状断熱材からなる配管用管状断熱材層とからなる断熱配管であって、前記配管と前記配管用管状断熱材層とが一体的に被覆形成されてなる断熱配管もまた、本発明の一つである。
The method for producing the heat insulating pipe of the present invention is not particularly limited. For example, the tubular heat insulating material for piping according to the present invention is integrally formed by covering the outer periphery of the pipe with plastic processing or the like. Method: forming a resin foam layer by extruding a resin foam on the outer periphery of the pipe, and forming a reflector layer by spirally winding a strip-shaped reflector around the outer periphery of the resin foam layer Furthermore, a method of forming a resin foam layer by extruding a resin foam on the outer periphery of the reflective material layer can be mentioned. Among these, a method of integrally forming a tubular heat insulating material layer for piping on the outer periphery of the piping is preferable.
A heat insulating pipe comprising a pipe made of such a resin and a tubular heat insulating material layer for a pipe made of the tubular heat insulating material for a pipe of the present invention formed on the outer periphery of the pipe, wherein the pipe and the tubular heat insulating material for the pipe The heat insulation pipe formed by integrally covering the material layer is also one aspect of the present invention.

本発明によれば、断熱性能を付与するために真空状態で封止する工程を行う必要がないため、簡易に低コストで製造することができ、かつ、高い断熱性能を発揮することが可能な配管用管状断熱材及び断熱配管を提供することができる。 According to the present invention, since it is not necessary to perform a step of sealing in a vacuum state in order to impart heat insulation performance, it can be easily manufactured at low cost and can exhibit high heat insulation performance. A tubular heat insulating material for piping and heat insulating piping can be provided.

以下に実施例を挙げて本発明の態様を更に詳しく説明するが、本発明はこれら実施例にのみ限定されるものではない。 Hereinafter, embodiments of the present invention will be described in more detail with reference to examples. However, the present invention is not limited to these examples.

(実施例1)
(断熱材の作製)
6枚の発泡ポリエチレン樹脂板(発泡倍率15倍、厚さ1mm)と、1枚のアルミ箔(反射率98%、厚さ120μm)とを、後述するヒーターへ設置する際に、ヒーター側から、4枚の発泡ポリエチレン樹脂板、アルミ箔、2枚の発泡ポリエチレン樹脂板がこの順に積層されるように貼り合わせ、断熱材サンプルを作製した。得られた断熱材サンプルの総厚さは約6mmであった。図1aに得られた断熱材サンプルの断面の模式図を示す。
Example 1
(Production of heat insulating material)
When installing six foamed polyethylene resin plates (foaming magnification 15 times, thickness 1 mm) and one aluminum foil (reflectance 98%, thickness 120 μm) on the heater described later, from the heater side, The four foamed polyethylene resin plates, the aluminum foil, and the two foamed polyethylene resin plates were laminated so as to be laminated in this order to produce a heat insulating material sample. The total thickness of the obtained heat insulating material sample was about 6 mm. The schematic diagram of the cross section of the heat insulating material sample obtained by FIG. 1a is shown.

(実施例2)
(断熱材の作製)
6枚の発泡ポリエチレン樹脂板(発泡倍率15倍、厚さ1mm)と、1枚のアルミ箔(反射率98%、厚さ120μm)とを、後述するヒーターへ設置する際に、ヒーター側から、5枚の発泡ポリエチレン樹脂板、アルミ箔、1枚の発泡ポリエチレン樹脂板がこの順に積層されるように貼り合わせ、断熱材サンプルを作製した。得られた断熱材サンプルの総厚さは約6mmであった。図1bに得られた断熱材サンプルの断面の模式図を示す。
(Example 2)
(Production of heat insulating material)
When installing six foamed polyethylene resin plates (foaming magnification 15 times, thickness 1 mm) and one aluminum foil (reflectance 98%, thickness 120 μm) on the heater described later, from the heater side, 5 sheets of foamed polyethylene resin plate, aluminum foil, and 1 sheet of foamed polyethylene resin plate were laminated so as to be laminated in this order to prepare a heat insulating material sample. The total thickness of the obtained heat insulating material sample was about 6 mm. The schematic diagram of the cross section of the heat insulating material sample obtained by FIG. 1b is shown.

(比較例1)
(断熱材の作製)
6枚の発泡ポリエチレン樹脂板(発泡倍率15倍、厚さ1mm)と、1枚のアルミ箔(反射率98%、厚さ120μm)とを、後述するヒーターへ設置する際に、ヒーター側から、アルミ箔、6枚の発泡ポリエチレン樹脂板がこの順に積層されるように貼り合わせ、断熱材サンプルを作製した。得られた断熱材サンプルの総厚さは約6mmであった。図2aに得られた断熱材サンプルの断面の模式図を示す。
(Comparative Example 1)
(Production of heat insulating material)
When installing six foamed polyethylene resin plates (foaming magnification 15 times, thickness 1 mm) and one aluminum foil (reflectance 98%, thickness 120 μm) on the heater described later, from the heater side, An aluminum foil and six foamed polyethylene resin plates were laminated so as to be laminated in this order, and a heat insulating material sample was produced. The total thickness of the obtained heat insulating material sample was about 6 mm. The schematic diagram of the cross section of the heat insulating material sample obtained by FIG. 2a is shown.

(比較例2)
(断熱材の作製)
6枚の発泡ポリエチレン樹脂板(発泡倍率15倍、厚さ1mm)と、1枚のアルミ箔(反射率98%、厚さ120μm)とを、後述するヒーターへ設置する際に、ヒーター側から、1枚の発泡ポリエチレン樹脂板、アルミ箔、5枚の発泡ポリエチレン樹脂板がこの順に積層されるように貼り合わせ、断熱材サンプルを作製した。得られた断熱材サンプルの総厚さは約6mmであった。図2bに得られた断熱材サンプルの断面の模式図を示す。
(Comparative Example 2)
(Production of heat insulating material)
When installing six foamed polyethylene resin plates (foaming magnification 15 times, thickness 1 mm) and one aluminum foil (reflectance 98%, thickness 120 μm) on the heater described later, from the heater side, A heat-insulating material sample was prepared by laminating one foamed polyethylene resin plate, aluminum foil, and five foamed polyethylene resin plates so as to be laminated in this order. The total thickness of the obtained heat insulating material sample was about 6 mm. The schematic diagram of the cross section of the heat insulating material sample obtained by FIG. 2b is shown.

(比較例3)
(断熱材の作製)
6枚の発泡ポリエチレン樹脂板(発泡倍率15倍、厚さ1mm)と、1枚のアルミ箔(反射率98%、厚さ120μm)とを、後述するヒーターへ設置する際に、ヒーター側から、2枚の発泡ポリエチレン樹脂板、アルミ箔、4枚の発泡ポリエチレン樹脂板がこの順に積層されるように貼り合わせ、断熱材サンプルを作製した。得られた断熱材サンプルの総厚さは約6mmであった。図2cに得られた断熱材サンプルの断面の模式図を示す。
(Comparative Example 3)
(Production of heat insulating material)
When installing six foamed polyethylene resin plates (foaming magnification 15 times, thickness 1 mm) and one aluminum foil (reflectance 98%, thickness 120 μm) on the heater described later, from the heater side, Two foamed polyethylene resin plates, aluminum foil, and four foamed polyethylene resin plates were laminated so as to be laminated in this order to produce a heat insulating material sample. The total thickness of the obtained heat insulating material sample was about 6 mm. The schematic diagram of the cross section of the heat insulating material sample obtained by FIG. 2c is shown.

(評価)
実施例1、2及び比較例1〜3で得られた断熱材サンプルについて以下の評価を行った。
結果を表1に示した。
(Evaluation)
The following evaluation was performed about the heat insulating material sample obtained in Examples 1, 2 and Comparative Examples 1-3.
The results are shown in Table 1.

(断熱性)
雰囲気温度を5℃に設定した恒温槽内において、電気ヒーター(設定温度50℃、中温度ホットプレート、東洋紡エンジニアリング社製)上に、作製した板状の断熱材サンプルを配置し、該断熱材サンプル上に、更に、ポリスチレンフォーム(厚さ40mm、ダウ化工社製、「スタイロフォーム」)を配置した。
温度センサー(K型熱電対、日本電化工業所社製)を電気ヒーターと断熱材サンプルとの間及び断熱材サンプルとポリスチレンフォームとの間に配置し、電気ヒーター表面及び断熱材サンプル表面の温度をそれぞれ測定し、電気ヒーター表面と断熱材サンプル表面との温度差を評価した。図3に、断熱性評価の方法を説明する模式図を示す。
なお、断熱材サンプル上のポリスチレンフォームは、断熱材サンプルが受ける雰囲気温度の影響を無くすために断熱材として設けたものである。
(Thermal insulation properties)
In a thermostatic chamber set to an ambient temperature of 5 ° C., the produced plate-like heat insulating material sample is placed on an electric heater (set temperature 50 ° C., medium temperature hot plate, manufactured by Toyobo Engineering Co., Ltd.), and the heat insulating material sample Furthermore, a polystyrene foam (thickness 40 mm, manufactured by Dow Kakko Co., Ltd., “Styrofoam”) was further disposed thereon.
Temperature sensors (K-type thermocouples, manufactured by Nippon Denka Kogyo Co., Ltd.) are placed between the electric heater and the heat insulating material sample and between the heat insulating material sample and the polystyrene foam, and the temperatures of the electric heater surface and the heat insulating material sample surface are measured. Each was measured, and the temperature difference between the surface of the electric heater and the surface of the heat insulating material sample was evaluated. In FIG. 3, the schematic diagram explaining the method of heat insulation evaluation is shown.
In addition, the polystyrene foam on a heat insulating material sample is provided as a heat insulating material in order to eliminate the influence of the atmospheric temperature which a heat insulating material sample receives.

Figure 2008286290
Figure 2008286290

本発明によれば、簡易に低コストで製造することができ、かつ、高い断熱性能を発揮することが可能な配管用管状断熱材及び断熱配管を提供することができる。 ADVANTAGE OF THE INVENTION According to this invention, the tubular heat insulating material for piping and heat insulation piping which can be manufactured simply and at low cost and can exhibit high heat insulation performance can be provided.

実施例1で作製した断熱材サンプルの断面の一例を示す模式図である。3 is a schematic diagram illustrating an example of a cross section of a heat insulating material sample manufactured in Example 1. FIG. 実施例2で作製した断熱材サンプルの断面の一例を示す模式図である。6 is a schematic diagram showing an example of a cross section of a heat insulating material sample produced in Example 2. FIG. 比較例1で作製した断熱材サンプルの断面の一例を示す模式図である。6 is a schematic diagram illustrating an example of a cross section of a heat insulating material sample manufactured in Comparative Example 1. FIG. 比較例2で作製した断熱材サンプルの断面の一例を示す模式図である。It is a schematic diagram which shows an example of the cross section of the heat insulating material sample produced in the comparative example 2. FIG. 比較例3で作製した断熱材サンプルの断面の一例を示す模式図である。It is a schematic diagram which shows an example of the cross section of the heat insulating material sample produced in the comparative example 3. FIG. 断熱性評価の方法を説明する模式図である。It is a schematic diagram explaining the method of heat insulation evaluation.

符号の説明Explanation of symbols

1 断熱材サンプル
2 発泡ポリエチレン樹脂板
3 アルミ箔
4 ポリスチレンフォーム
5 電気ヒーター
6 温度センサー
7 断熱材サンプル
DESCRIPTION OF SYMBOLS 1 Heat insulation material sample 2 Polyethylene resin board 3 Aluminum foil 4 Polystyrene foam 5 Electric heater 6 Temperature sensor 7 Heat insulation material sample

Claims (4)

樹脂発泡体層及び反射材層からなる配管用管状断熱材であって、
総厚の半分より表面側に少なくとも1層の前記反射材層が設けられている
ことを特徴とする配管用管状断熱材。
A tubular heat insulating material for piping composed of a resin foam layer and a reflective material layer,
A tubular heat insulating material for piping, wherein at least one of the reflective material layers is provided on the surface side of half of the total thickness.
樹脂発泡体層は、ポリエチレン樹脂発泡体からなることを特徴とする請求項1記載の配管用管状断熱材。 The tubular heat insulating material for piping according to claim 1, wherein the resin foam layer is made of a polyethylene resin foam. 反射材層は、反射率が90%以上である反射材からなることを特徴とする請求項1記載の配管用管状断熱材。 The tubular heat insulating material for piping according to claim 1, wherein the reflective material layer is made of a reflective material having a reflectance of 90% or more. 樹脂からなる配管と、前記配管の外周に形成された請求項1、2又は3記載の配管用管状断熱材からなる配管用管状断熱材層とからなる断熱配管であって、
前記配管と前記配管用管状断熱材層とが一体的に被覆形成されてなることを特徴とする断熱配管。
A heat insulating pipe comprising a pipe made of resin and a tubular heat insulating material layer for piping made of the tubular heat insulating material for piping according to claim 1, 2 or 3, formed on the outer periphery of the pipe,
A heat insulating pipe, wherein the pipe and the tubular heat insulating material layer for pipe are integrally formed.
JP2007130948A 2007-05-16 2007-05-16 Tubular insulation for piping Expired - Fee Related JP5166771B2 (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102937226A (en) * 2012-11-29 2013-02-20 大连创达技术交易市场有限公司 Outer thermal-insulation film of heating pipeline
CN103727359A (en) * 2013-12-26 2014-04-16 北京首邦新材料有限公司 Pipeline heat insulation construction method and pipeline heat insulation device of multi-setting foam glass material
CN104406006A (en) * 2014-10-28 2015-03-11 宁夏天纵泓光余热发电技术有限公司 Open-air instrument pipe heat preservation method
CN104633395A (en) * 2014-12-24 2015-05-20 中国建筑材料科学研究总院 Hard thermal insulation felt and manufacturing method thereof
KR20210143981A (en) * 2020-05-20 2021-11-30 병 국 박 Flame-retardant protective cover material for pipe and Manufacturing method thereof

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Publication number Priority date Publication date Assignee Title
JPS62170493U (en) * 1986-04-17 1987-10-29
JP2001336692A (en) * 2000-05-29 2001-12-07 Cd Technos Kk Heat insulating structure
JP2004340223A (en) * 2003-05-14 2004-12-02 Mirai Ind Co Ltd Coated fluid pipe and coated fluid pipe device

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Publication number Priority date Publication date Assignee Title
JPS62170493U (en) * 1986-04-17 1987-10-29
JP2001336692A (en) * 2000-05-29 2001-12-07 Cd Technos Kk Heat insulating structure
JP2004340223A (en) * 2003-05-14 2004-12-02 Mirai Ind Co Ltd Coated fluid pipe and coated fluid pipe device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102937226A (en) * 2012-11-29 2013-02-20 大连创达技术交易市场有限公司 Outer thermal-insulation film of heating pipeline
CN103727359A (en) * 2013-12-26 2014-04-16 北京首邦新材料有限公司 Pipeline heat insulation construction method and pipeline heat insulation device of multi-setting foam glass material
CN104406006A (en) * 2014-10-28 2015-03-11 宁夏天纵泓光余热发电技术有限公司 Open-air instrument pipe heat preservation method
CN104633395A (en) * 2014-12-24 2015-05-20 中国建筑材料科学研究总院 Hard thermal insulation felt and manufacturing method thereof
KR20210143981A (en) * 2020-05-20 2021-11-30 병 국 박 Flame-retardant protective cover material for pipe and Manufacturing method thereof
KR102336423B1 (en) * 2020-05-20 2021-12-07 병 국 박 Flame-retardant protective cover material for pipe and Manufacturing method thereof

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