JP2000274931A - Core material for vacuum insulating material and vacuum insulating material employing the same - Google Patents
Core material for vacuum insulating material and vacuum insulating material employing the sameInfo
- Publication number
- JP2000274931A JP2000274931A JP8380399A JP8380399A JP2000274931A JP 2000274931 A JP2000274931 A JP 2000274931A JP 8380399 A JP8380399 A JP 8380399A JP 8380399 A JP8380399 A JP 8380399A JP 2000274931 A JP2000274931 A JP 2000274931A
- Authority
- JP
- Japan
- Prior art keywords
- insulating material
- polyurethane foam
- core material
- vacuum insulating
- heat insulating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Landscapes
- Refrigerator Housings (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、冷蔵庫、冷凍庫、
耐熱ボード、建築ボードなどに用いられる真空断熱材の
コア材及びそれを用いた真空断熱材に関する。The present invention relates to a refrigerator, a freezer,
The present invention relates to a core material of a vacuum heat insulating material used for a heat-resistant board, a building board, and the like, and a vacuum heat insulating material using the same.
【０００２】[0002]
【従来の技術】近年、環境保護の観点から、冷蔵庫や冷
凍庫などに断熱材として用いられる発泡断熱材の廃棄物
処理が問題となっている。2. Description of the Related Art In recent years, from the viewpoint of environmental protection, waste disposal of foamed heat insulating materials used as heat insulating materials in refrigerators and freezers has become a problem.
【０００３】従来、発泡断熱材としては、発泡ポリウレ
タンを用いており、これを処理する方法として、特公昭
５３−３４０００号公報には、軟質ポリウレタンフォー
ムをジエチレングリコールなどの低分子量グリコールで
分解した後、ポリオールを再生する方法が記載されてお
り、この低分子量ポリオールを使用してポリウレタンを
製造する方法がある。Conventionally, foamed polyurethane has been used as a foamed heat insulating material. As a method for treating the foamed foam, Japanese Patent Publication No. 53-34000 discloses that a flexible polyurethane foam is decomposed with a low molecular weight glycol such as diethylene glycol. A method for regenerating a polyol is described, and there is a method for producing a polyurethane using the low molecular weight polyol.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、この様
なポリウレタンフォームを低分子量グリコールで分解す
る方法では、分解温度が２００℃以上と高温となるた
め、設備に多大なコストがかかる、高温でも分解速度
が速くない、高分子量ポリオールを分離抽出した残り
の低分子量分解液にアルキレンオキサイドを付加して得
られる低分子量の再生ポリオールを硬質フォームの原料
として使用すると平均官能基数が低いため、フォーム物
性が低下するなどの様々な問題を有していた。However, in the method of decomposing such a polyurethane foam with a low-molecular-weight glycol, the decomposition temperature is as high as 200 ° C. or more, so that the equipment is very costly. Not fast, low molecular weight regenerated polyol obtained by adding alkylene oxide to the remaining low molecular weight decomposed liquid obtained by separation and extraction of high molecular weight polyol. And had various problems.
【０００５】本発明は上述した問題点に鑑みてなされた
もので、低コストで所望の物性を得ることを目的とした
真空断熱材のコア材及びそれを用いた真空断熱材を提供
する。The present invention has been made in view of the above-mentioned problems, and provides a vacuum heat insulating core material and a vacuum heat insulating material using the same, which are intended to obtain desired physical properties at low cost.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するため
の手段として、本発明の請求項１では、ジフェニルメタ
ンイソシアネート又はトリレンジイソシアネートをバイ
ンダとして用い、カーボン又は無機質の微粉末を加熱し
て固化させることによりコア材を形成した真空断熱材の
コア材を提供する。According to the first aspect of the present invention, diphenylmethane isocyanate or tolylene diisocyanate is used as a binder, and carbon or inorganic fine powder is solidified by heating. Thus, a core material of a vacuum heat insulating material having a core material formed thereon is provided.
【０００７】この様に、バインダとして、ジフェルニメ
タンイソシアネート或いはトリレンジイソシアネートを
用いた関係上、任意の形状に加工できる。[0007] Thus, it can be processed into an arbitrary shape due to the use of difernimethane isocyanate or tolylene diisocyanate as a binder.
【０００８】また、請求項２の発明では、破砕した硬質
ポリウレタンフォーム屑を前記カーボン又は無機質の微
粉末に混入した請求項１記載の真空断熱材のコア材を提
供する。According to a second aspect of the present invention, there is provided a core material of a vacuum heat insulating material according to the first aspect, wherein crushed hard polyurethane foam waste is mixed with the carbon or inorganic fine powder.
【０００９】この様に、カーボン粉を増量材として用い
た場合、断熱性能の向上を図る事ができ、無機粉末を増
量材として用いた場合、輻射熱の伝達を防止する事がで
きる。As described above, when the carbon powder is used as the filler, the heat insulating performance can be improved, and when the inorganic powder is used as the filler, transmission of radiant heat can be prevented.
【００１０】また、請求項３の発明では、請求項１又は
請求項２に記載されたコア材を気体不透過性に優れた容
器内に封入し、内部を真空状態にして形成した真空断熱
材を提供する。According to a third aspect of the present invention, there is provided a vacuum heat insulating material formed by enclosing the core material according to the first or second aspect in a container having excellent gas impermeability and forming a vacuum state inside. I will provide a.
【００１１】[0011]
【発明の実施の形態】以下、本発明の実施の形態を説明
する。Embodiments of the present invention will be described below.
【００１２】図１は本発明の真空断熱材のコア材の一部
拡大図である。FIG. 1 is a partially enlarged view of the core material of the vacuum heat insulating material of the present invention.
【００１３】本発明では、先ず廃棄された冷蔵庫や冷凍
庫などに用いられている断熱材、即ち硬質ポリウレタン
フォームを取り外す。この作業は、冷蔵庫や冷凍庫など
の外板を止めているリベット、ネジなどを取り外し、外
板をはがすと硬質ポリウレタンフォームが露出するの
で、この状態で硬質ポリウレタンフォームの廃材を回収
する。In the present invention, first, a heat insulating material used for a discarded refrigerator or freezer, that is, a rigid polyurethane foam is removed. In this operation, the rigid polyurethane foam is exposed by removing rivets, screws, and the like that fix the outer plate of a refrigerator or a freezer, and removing the outer plate. In this state, the waste material of the rigid polyurethane foam is collected.
【００１４】また、冷蔵庫を破砕して、風力選別機を使
用して硬質ポリウレタンフォームを回収するようにして
も良い。Further, the refrigerator may be crushed, and the rigid polyurethane foam may be collected using a wind separator.
【００１５】そして、この硬質ポリウレタンフォームの
廃材を少なくとも直径４ｍｍ以下の大きさにシュレッダ
ーにて粉砕し、硬質ポリウレタンフォーム屑１を形成す
る。Then, the waste material of the rigid polyurethane foam is pulverized by a shredder to a size of at least 4 mm or less to form a rigid polyurethane foam waste 1.
【００１６】そして、この硬質ポリウレタンフォーム屑
１とバインダ、即ちジフェニルメタンイソシアネート
（以下、ＭＤＩと称する）、或いはトリレンジイソシア
ネート（以下ＴＤＩと称する）を混合し、加熱固化、即
ち熱を加えながら加圧して板状にする際、粒子が１０〜
３０μ程度、好ましくは２０μ程度のカーボン粉を増量
材２として添加して形成する。Then, the rigid polyurethane foam waste 1 and a binder, that is, diphenylmethane isocyanate (hereinafter, referred to as MDI) or tolylene diisocyanate (hereinafter, referred to as TDI) are mixed, and the mixture is solidified by heating, that is, pressurized while applying heat. When making a plate, the particles
It is formed by adding about 30 μ, preferably about 20 μ, of carbon powder as the filler 2.
【００１７】即ち、図１に示す如く、本発明の真空断熱
材のコア材は、硬質ポリウレタンフォーム屑１とカーボ
ン粉にて形成され、高ガスバリア性（気体不透過性）を
有する容器（例えば、金属箔とプラスチックフィルムを
積層したラミネートフィルム）で全体を取り囲み、内部
を減圧（真空引き）した後、周縁部を熱融着等により封
止して形成される。That is, as shown in FIG. 1, the core material of the vacuum heat insulating material of the present invention is formed of hard polyurethane foam dust 1 and carbon powder, and has a container having a high gas barrier property (gas impermeable) (for example, It is formed by surrounding the whole with a laminated film (a laminated film of a metal foil and a plastic film), depressurizing (evacuating) the inside, and sealing the peripheral portion by heat fusion or the like.
【００１８】尚、カーボン粉２の量は１０〜３０重量％
であり、バインダは５〜６重量％程度、残りが硬質ポリ
ウレタンフォーム屑である。The amount of the carbon powder 2 is 10 to 30% by weight.
The binder is about 5 to 6% by weight, and the remainder is hard polyurethane foam waste.
【００１９】この様に、バインダとしてＭＤＩ或いはＴ
ＤＩを用いる事により、真空断熱材のコア材を任意の形
状にできると共に、カーボン粉２を添加する事により、
断熱性能を向上させる事ができる。As described above, MDI or T
By using DI, the core material of the vacuum heat insulating material can be formed into an arbitrary shape, and by adding the carbon powder 2,
Heat insulation performance can be improved.
【００２０】また、増量材２としてはカーボン粉以外
に、無機粉末、例えばＳｉＯ2、ＣａＯ、ＣａＣＯ3など
を用いても良い。この場合、輻射熱の伝達を極力防止す
る効果を奏する。As the filler 2, inorganic powders such as SiO 2 , CaO, CaCO 3 and the like may be used in addition to carbon powder. In this case, there is an effect of minimizing the transmission of radiant heat.
【００２１】更に。硬質ポリウレタンフォーム屑１を用
いず、無機粉末の増量材２とＭＤＩ或いはＴＤＩとを混
合して真空断熱コア材を形成しても良い。Further, Instead of using the hard polyurethane foam waste 1, the vacuum insulating core material may be formed by mixing the filler 2 of inorganic powder and MDI or TDI.
【００２２】この場合、不燃材となるため、建築ボー
ド、耐熱ボードを形成する事ができる。In this case, since it becomes a non-combustible material, a building board and a heat-resistant board can be formed.
【００２３】この様に、ＭＤＩ或いはＴＤＩを用いて建
築ボードを形成する事により、任意の形状とする事がで
きるため、複雑な建築、建造物にも使用する事ができ、
建築、建造物の美観の向上に寄与する。As described above, since an architectural board is formed by using MDI or TDI, an arbitrary shape can be obtained.
Contributes to improving the beauty of architecture and buildings.
【００２４】[0024]
【発明の効果】 以上詳述した如く、本発明によると、
バインダとして、ジフェルニメタンイソシアネート或い
はトリレンジイソシアネートを用いた関係上、任意の形
状に加工できる。従って、複雑な形状の冷蔵庫、冷凍庫
などの製品や建築、建造物であっても、低コストで提供
する事ができる。As described in detail above, according to the present invention,
Due to the use of difernimethane isocyanate or tolylene diisocyanate as the binder, it can be processed into any shape. Therefore, even products such as refrigerators and freezers having complicated shapes, buildings, and buildings can be provided at low cost.
【００２５】また、廃棄される硬質ポリウレタンフォー
ムのリサイクルが可能となる。このため、冷蔵庫や冷凍
庫などの廃棄物を極力少なくする事ができる。Further, the rigid polyurethane foam to be discarded can be recycled. For this reason, it is possible to minimize waste such as refrigerators and freezers.
【００２６】更に、カーボン粉を用いた場合、断熱性能
の向上を図る事ができ、無機粉末を用いた場合、輻射熱
の伝達を防止する事ができる。このため、断熱性能の向
上や耐熱性能の向上を図る事ができる。Furthermore, when carbon powder is used, the heat insulation performance can be improved, and when inorganic powder is used, transmission of radiant heat can be prevented. Therefore, it is possible to improve the heat insulation performance and the heat resistance performance.
【図１】本発明の真空断熱コア材の一部拡大図である。FIG. 1 is a partially enlarged view of a vacuum heat insulating core material of the present invention.
１ 硬質ポリウレタンフォーム屑 ２ 増量材 1 Rigid polyurethane foam waste 2 Extender
Claims (3)
リレンジイソシアネートをバインダとして用い、カーボ
ン又は無機質の微粉末を加熱して固化させることにより
コア材を形成したことを特徴とする真空断熱材のコア
材。1. A core material of a vacuum heat insulating material, wherein a core material is formed by heating and solidifying carbon or inorganic fine powder using diphenylmethane isocyanate or tolylene diisocyanate as a binder.
前記カーボン又は無機質の微粉末に混入したことを特徴
とする請求項１記載の真空断熱材のコア材。2. The vacuum insulation core material according to claim 1, wherein crushed hard polyurethane foam waste is mixed with said carbon or inorganic fine powder.
材を気体不透過性に優れた容器内に封入し、内部を真空
状態にして形成したことを特徴とする真空断熱材。3. A vacuum heat insulating material, wherein the core material according to claim 1 or 2 is sealed in a container having excellent gas impermeability and is formed in a vacuum state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8380399A JP2000274931A (en) | 1999-03-26 | 1999-03-26 | Core material for vacuum insulating material and vacuum insulating material employing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8380399A JP2000274931A (en) | 1999-03-26 | 1999-03-26 | Core material for vacuum insulating material and vacuum insulating material employing the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000274931A true JP2000274931A (en) | 2000-10-06 |
Family
ID=13812832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8380399A Withdrawn JP2000274931A (en) | 1999-03-26 | 1999-03-26 | Core material for vacuum insulating material and vacuum insulating material employing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000274931A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006275308A (en) * | 2005-03-28 | 2006-10-12 | Matsushita Electric Ind Co Ltd | Method for taking out thermal insulating material of refrigerator, method for taking out vacuum thermal insulating material core member, method for storing vacuum thermal insulating material core member, and thermal insulating material reusing product |
-
1999
- 1999-03-26 JP JP8380399A patent/JP2000274931A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006275308A (en) * | 2005-03-28 | 2006-10-12 | Matsushita Electric Ind Co Ltd | Method for taking out thermal insulating material of refrigerator, method for taking out vacuum thermal insulating material core member, method for storing vacuum thermal insulating material core member, and thermal insulating material reusing product |
| JP4497006B2 (en) * | 2005-03-28 | 2010-07-07 | パナソニック株式会社 | Vacuum insulation material core removal method, vacuum insulation material core storage method, and insulation reuse product |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A761 | Written withdrawal of application |
Effective date: 20040225 Free format text: JAPANESE INTERMEDIATE CODE: A761 |