JPH0873637A - Foamed heat-insulating material, method for producing foamed heat-insulating material and heat-insulating box - Google Patents
Foamed heat-insulating material, method for producing foamed heat-insulating material and heat-insulating boxInfo
- Publication number
- JPH0873637A JPH0873637A JP21367294A JP21367294A JPH0873637A JP H0873637 A JPH0873637 A JP H0873637A JP 21367294 A JP21367294 A JP 21367294A JP 21367294 A JP21367294 A JP 21367294A JP H0873637 A JPH0873637 A JP H0873637A
- Authority
- JP
- Japan
- Prior art keywords
- carbon dioxide
- insulating material
- foamed heat
- heat insulating
- component
- 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.)
- Pending
Links
- 239000011810 insulating material Substances 0.000 title claims abstract description 31
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 239000006260 foam Substances 0.000 claims abstract description 24
- 239000002994 raw material Substances 0.000 claims abstract description 19
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000004088 foaming agent Substances 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229920001228 polyisocyanate Polymers 0.000 claims abstract description 11
- 239000005056 polyisocyanate Substances 0.000 claims abstract description 11
- 239000003054 catalyst Substances 0.000 claims abstract description 10
- 229920005862 polyol Polymers 0.000 claims abstract description 10
- 150000003077 polyols Chemical class 0.000 claims abstract description 10
- 239000003381 stabilizer Substances 0.000 claims abstract description 10
- 238000009413 insulation Methods 0.000 claims abstract description 9
- 229920003023 plastic Polymers 0.000 claims abstract description 7
- 239000004033 plastic Substances 0.000 claims abstract description 7
- 238000003756 stirring Methods 0.000 claims abstract description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 102
- 239000001569 carbon dioxide Substances 0.000 claims description 51
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 51
- 239000003463 adsorbent Substances 0.000 claims description 36
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 18
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 9
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 9
- 150000008044 alkali metal hydroxides Chemical class 0.000 claims description 5
- 239000000203 mixture Substances 0.000 abstract description 10
- 238000005187 foaming Methods 0.000 abstract description 9
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 229910052799 carbon Inorganic materials 0.000 abstract 2
- 239000003795 chemical substances by application Substances 0.000 abstract 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical group [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 abstract 1
- 239000004814 polyurethane Substances 0.000 abstract 1
- 229920002635 polyurethane Polymers 0.000 abstract 1
- 229910052700 potassium Inorganic materials 0.000 abstract 1
- 239000011591 potassium Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 7
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 5
- 239000012948 isocyanate Substances 0.000 description 5
- 150000002513 isocyanates Chemical class 0.000 description 5
- 238000010792 warming Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000012943 hotmelt Substances 0.000 description 4
- 239000012774 insulation material Substances 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 4
- 239000004604 Blowing Agent Substances 0.000 description 3
- RGSFGYAAUTVSQA-UHFFFAOYSA-N Cyclopentane Chemical compound C1CCCC1 RGSFGYAAUTVSQA-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- OHMHBGPWCHTMQE-UHFFFAOYSA-N 2,2-dichloro-1,1,1-trifluoroethane Chemical compound FC(F)(F)C(Cl)Cl OHMHBGPWCHTMQE-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 229920005883 amine-based polyether polyol Polymers 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 150000004982 aromatic amines Chemical class 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- DMEGYFMYUHOHGS-UHFFFAOYSA-N heptamethylene Natural products C1CCCCCC1 DMEGYFMYUHOHGS-UHFFFAOYSA-N 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/04—Arrangements using dry fillers, e.g. using slag wool
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Thermal Insulation (AREA)
- Refrigerator Housings (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、冷蔵庫、冷凍庫等に用
いる発泡断熱材、および発泡断熱材を充填してなる断熱
箱体に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foam insulation material used in refrigerators, freezers, etc., and a heat insulation box body filled with the foam insulation material.
【０００２】[0002]
【従来の技術】近年、クロロフルオロカ−ボン（以下Ｃ
ＦＣと称する）、更にはハイドロクロロフルオロカ−ボ
ン（以下ＨＣＦＣと称する）によるオゾン層破壊および
地球温暖化等の環境問題が注目されており、発泡断熱材
である硬質ウレタンフォ−ムの製造にあたっては、ＣＦ
Ｃ使用量の削減を目的として、有機ポリイソシアネ−ト
と水との反応によって得られる炭酸ガスを発泡剤の一部
として用いる方法が適用されている。2. Description of the Related Art In recent years, chlorofluorocarbons (hereinafter C
Environmental problems such as ozone layer depletion and global warming due to hydrochlorofluorocarbon (hereinafter referred to as HCFC) have been attracting attention. Is CF
For the purpose of reducing the amount of C used, a method of using carbon dioxide gas obtained by the reaction of an organic polyisocyanate and water as a part of a foaming agent is applied.
【０００３】しかし、炭酸ガスを発泡剤の一部として用
いる方法は、炭酸ガスの気体熱伝導率が大きいため発泡
断熱材の断熱性能が劣る欠点があり、特開昭６２−１７
３２６８号公報にも述べられているように炭酸ガス吸着
剤で炭酸ガスを除去し、前記欠点を補う技術が示されて
いる。However, the method of using carbon dioxide gas as a part of the foaming agent has a drawback that the heat insulating performance of the foamed heat insulating material is inferior because of the large gas thermal conductivity of carbon dioxide gas.
As described in Japanese Patent No. 3268, there is disclosed a technique of removing carbon dioxide gas with a carbon dioxide gas adsorbent to compensate for the above-mentioned drawbacks.
【０００４】特開昭６２−１７３２６８号公報を説明す
ると、炭酸ガス吸着剤を含有するホットメルトを面材裏
面に塗布して発泡断熱材で一体発泡したものである。発
泡断熱材に含まれる炭酸ガスは面材裏面に塗布したホッ
トメルト中の炭酸ガス吸着剤に吸着される結果、発泡断
熱材の気体成分の熱伝導率が小さくなり、性能向上が図
れるというものである。Explaining JP-A-62-173268, hot melt containing a carbon dioxide adsorbent is applied to the back surface of a face material and integrally foamed by a foamed heat insulating material. The carbon dioxide gas contained in the foam insulation is adsorbed by the carbon dioxide adsorbent in the hot melt applied to the back surface of the face material, and as a result, the thermal conductivity of the gas component of the foam insulation is reduced, which improves performance. is there.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、面材裏
面に塗布したホットメルト中に炭酸ガス吸着剤を配設し
ているため、発泡断熱材に含まれる炭酸ガスを吸着する
には約一週間を要し、工業化に大きな問題があった。ま
た、断熱壁が厚い場合においては一層効率が低下するた
め、より短時間で炭酸ガスを吸着除去し、高性能の発泡
断熱材を得る仕様が必要となっていた。However, since the carbon dioxide adsorbent is disposed in the hot melt applied to the back surface of the face material, it takes about one week to adsorb the carbon dioxide contained in the foamed heat insulating material. In short, there was a big problem in industrialization. Further, when the heat insulating wall is thick, the efficiency is further lowered, so that it is necessary to adsorb and remove carbon dioxide gas in a shorter time to obtain a high-performance foamed heat insulating material.
【０００６】また、面材裏面にホットメルトを塗布する
と、一体発泡時の反応熱で部分的に溶解する結果、発泡
断熱材との接着が不均一となって外観上変形する問題が
あった。Further, when hot melt is applied to the back surface of the face material, it is partially melted by reaction heat at the time of integral foaming, resulting in non-uniform adhesion to the foamed heat insulating material and deformation in appearance.
【０００７】オゾン層破壊や地球温暖化の原因となるフ
ロン系発泡剤の使用量を減らすことを目的とし、炭酸ガ
スを発泡剤として使用しながら、かつ高性能化を図り、
断熱箱体の外観品質を確保する手段を見出すことが課題
であった。With the aim of reducing the amount of CFC-based blowing agent that causes ozone layer depletion and global warming, while using carbon dioxide gas as a blowing agent, high performance is achieved.
The challenge was to find a means of ensuring the appearance quality of the heat insulating box.
【０００８】本発明は、上記課題に鑑み、地球環境保護
を主要目的とし、オゾン層破壊の影響が全く無く、地球
温暖化へ与える影響も極めて少ない炭酸ガスを発泡剤の
主成分とする発泡断熱材を用いる場合においても、量産
品質上問題無く適用できる発泡断熱材を提供するもので
ある。In view of the above problems, the present invention has a main object of protecting the global environment, has no influence of ozone layer depletion, and has very little influence on global warming. Even when a material is used, it is intended to provide a foamed heat insulating material that can be applied without any problem in terms of mass production quality.
【０００９】[0009]
【課題を解決するための手段】本発明は上記課題を解決
するために有機ポリイソシアネ−ト、ポリオ−ル、触
媒、整泡剤、発泡剤成分として少なくとも水を含む原料
とポリビニルアルコール等のプラスチックスで被膜処理
した炭酸ガス吸着剤を混合撹拌し、発泡生成して発泡断
熱材を得るものである。In order to solve the above-mentioned problems, the present invention provides a material such as an organic polyisocyanate, a polyol, a catalyst, a foam stabilizer, a raw material containing at least water as a foaming agent component, and a plastic such as polyvinyl alcohol. The carbon dioxide adsorbent coated with the above method is mixed and stirred, and foaming is generated to obtain a foamed heat insulating material.
【００１０】また、炭酸ガス吸着剤として表面に水酸化
カリウム等のアルカリ金属水酸化物を添着させた活性炭
を用いるものである。As the carbon dioxide adsorbent, activated carbon having an alkali metal hydroxide such as potassium hydroxide impregnated on its surface is used.
【００１１】さらに、炭酸ガス吸着剤を混合撹拌におい
て、まず、有機ポリイソシアネ−ト、ポリオ−ル、触
媒、整泡剤、発泡剤成分として少なくとも水を含む原料
を混合した後、炭酸ガス吸着剤を混合して発泡断熱材を
製造するものである。Further, in mixing and stirring the carbon dioxide adsorbent, first, the organic polyisocyanate, the polyol, the catalyst, the foam stabilizer, and the raw material containing at least water as the foaming agent component are mixed, and then the carbon dioxide adsorbent is mixed. The mixture is mixed to produce a foamed heat insulating material.
【００１２】加えて、有機ポリイソシアネ−ト、ポリオ
−ル、触媒、整泡剤、発泡剤成分として少なくとも水を
含む原料とポリビニルアルコール等のプラスチックスで
被膜処理した炭酸ガス吸着剤を混合撹拌し、内箱と外箱
間に一体発泡して断熱箱体を形成したものである。In addition, an organic polyisocyanate, a polyol, a catalyst, a foam stabilizer, a raw material containing at least water as a foaming agent component and a carbon dioxide adsorbent coated with a plastic such as polyvinyl alcohol are mixed and stirred, A heat insulating box is formed by integrally foaming between the inner box and the outer box.
【００１３】[0013]
【作用】上記構成によって、炭酸ガス吸着剤は発泡断熱
材の中に分散して分布するため発泡断熱中の炭酸ガスが
吸着剤に到達する拡散移動距離は小さくなり、短時間で
吸着除去が可能となる。このとき、炭酸ガス吸着剤はポ
リビニルアルコール等のプラスチックスで被膜処理され
ているため、原料混合過程で原料に含まれる水は容易に
炭酸ガス吸着剤に接触して吸着されてしまうことはな
い。すなわち、水は有機イソシアネートと反応して炭酸
ガスを発生し発泡剤の機能を果たした後、炭酸ガス吸着
剤によって吸着除去できるため、発泡過程でも問題な
く、かつ気体熱伝導率の大きな炭酸ガス分圧を吸着除去
により低下させることができるため、発泡断熱材の高断
熱化が図れるのである。[Advantage] With the above structure, the carbon dioxide adsorbent is dispersed and distributed in the foamed heat insulating material, so that the diffusion movement distance of the carbon dioxide gas in the foamed heat insulating material to reach the adsorbent is short, and adsorption / removal is possible in a short time. Becomes At this time, since the carbon dioxide adsorbent is coated with a plastic such as polyvinyl alcohol, water contained in the raw materials is not easily contacted with and adsorbed on the carbon dioxide adsorbent in the raw material mixing process. In other words, water reacts with organic isocyanate to generate carbon dioxide gas and fulfills the function of a foaming agent, and can be adsorbed and removed by a carbon dioxide gas adsorbent, so that there is no problem even in the foaming process, and carbon dioxide gas with a large gas thermal conductivity is present. Since the pressure can be reduced by adsorption and removal, it is possible to achieve high heat insulation of the foamed heat insulating material.
【００１４】また、表面に水酸化カリウム等のアルカリ
金属水酸化物を添着させた活性を炭酸ガス吸着剤として
用いると、物理的な吸着に加えて化学反応によって炭酸
ガスが吸着固定化されるため、吸着能力は高く使用量を
少なくできる結果、炭酸ガス吸着剤自身の固体伝導伝熱
の悪影響を受けにくく、発泡断熱材の高断熱化に寄与す
るのである。When an activity in which an alkali metal hydroxide such as potassium hydroxide is attached to the surface is used as a carbon dioxide adsorbent, carbon dioxide is adsorbed and immobilized by a chemical reaction in addition to physical adsorption. As a result, the adsorption capacity is high and the amount used can be reduced, and as a result, the carbon dioxide adsorbent itself is less likely to be adversely affected by the solid conduction heat transfer and contributes to the high heat insulation of the foamed heat insulating material.
【００１５】一方，製造法として、有機ポリイソシアネ
−ト、ポリオ−ル、触媒、整泡剤、発泡剤成分として水
を含んだ原料を混合した後、炭酸ガス吸着剤を混合して
発泡断熱材を製造する場合においては、炭酸ガス吸着剤
が原料中に混合している時間が極めて短いため、活性炭
表面に添着させた水酸化カリウム等のアルカリ金属水酸
化物が原料中に溶出することはなく、発泡過程で触媒作
用で異常な反応が起こる問題もなく、安定した発泡挙動
により高性能の発泡断熱材を得ることができるのであ
る。On the other hand, as a manufacturing method, an organic polyisocyanate, a polyol, a catalyst, a foam stabilizer, and a raw material containing water as a foaming agent component are mixed, and then a carbon dioxide adsorbent is mixed to form a foamed heat insulating material. In the case of production, since the time during which the carbon dioxide adsorbent is mixed in the raw material is extremely short, alkali metal hydroxide such as potassium hydroxide attached to the surface of the activated carbon does not elute in the raw material, It is possible to obtain a high-performance foamed heat insulating material with stable foaming behavior without the problem that an abnormal reaction occurs due to the catalytic action in the foaming process.
【００１６】さらには、炭酸ガス吸着剤は発泡断熱材中
に分散するため、変形等の断熱箱体の外観品質に影響を
及ぼすこともなく、品質確保ができるのである。Further, since the carbon dioxide adsorbent is dispersed in the foamed heat insulating material, the quality can be secured without affecting the appearance quality of the heat insulating box body such as deformation.
【００１７】このように本発明は、前記課題に鑑み、地
球環境保護を主要目的とし、オゾン層破壊の影響が全く
無く、地球温暖化へ与える影響も極めて少ない炭酸ガス
を発泡剤の主成分とする発泡断熱材を用いる場合におい
ても、量産品質上に問題なく、高性能の発泡断熱材と断
熱箱体を提供するものである。As described above, in view of the above problems, the present invention has a main purpose of protecting the global environment, and has carbon dioxide gas as a main component of the blowing agent, which has no influence of ozone layer depletion and has little influence on global warming. The present invention provides a high-performance foamed heat insulating material and a heat-insulating box without any problem in terms of mass production quality even when using such a foamed heat insulating material.
【００１８】[0018]
【実施例】以下、本発明の一実施例について、図１を参
照しながら説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG.
【００１９】（表１）に一実施例の原料処方を示した。
プレミックス成分として、ポリオ−ルは、芳香族アミン
系ポリエ−テルポリオ−ルで水酸基価４６０mgKOH/g、
触媒は花王(株)製カオライザ−No,1、整泡剤はシリコー
ン系界面活性剤である信越化学(株)製Ｆ−３３７、発泡
剤としてシクロペンタンと純水を用いて所定の配合部数
で混合する。炭酸ガス吸着剤１は、水酸化カリウムを表
面添着させた活性炭をポリビニルアルコールで被膜処理
したものである。Table 1 shows the raw material formulation of one example.
As a premix component, the polyol is an aromatic amine-based polyether polyol having a hydroxyl value of 460 mgKOH / g,
The catalyst is Kaoizer No. 1 manufactured by Kao Corporation, the foam stabilizer is F-337 manufactured by Shin-Etsu Chemical Co., Ltd., which is a silicone-based surfactant, and cyclopentane and pure water are used as a foaming agent at a predetermined mixing ratio. Mix. The carbon dioxide adsorbent 1 is an activated carbon having potassium hydroxide adhering to its surface, which is coated with polyvinyl alcohol.
【００２０】イソシアネ−ト成分は、アミン当量１３５
のクル−ドＭＤＩから成る有機ポリイソシアネ−トであ
る。The isocyanate component has an amine equivalent of 135
Is an organic polyisocyanate composed of C.I.
【００２１】前記プレミックス成分とイソシアネ−ト成
分とを所定の配合部数で高圧発泡機（図示せず）を用い
て混合撹拌し、吐出ヘッド２から内箱３と外箱４によっ
て形成される箱体空間部５に注入口６を介して注入す
る。注入口６の下の箱体フランジ部７には炭酸ガス吸着
剤１が予め配設されている。吐出ヘッド２から吐出され
た原料は、炭酸ガス吸着剤１を巻き込み、一体混合しな
がら箱体空間部５を充填する。充填された硬質ウレタン
フォーム７は、時間経過により硬化し断熱箱体８が得ら
れる。A box formed by the inner box 3 and the outer box 4 from the discharge head 2 by mixing and stirring the premix component and the isocyanate component in a predetermined number of parts by using a high-pressure foaming machine (not shown). It is injected into the body space 5 through the injection port 6. The carbon dioxide adsorbent 1 is previously arranged on the box flange portion 7 below the inlet 6. The raw material discharged from the discharge head 2 wraps the carbon dioxide adsorbent 1 therein and fills the box space 5 while integrally mixing. The filled hard urethane foam 7 is cured over time to obtain the heat insulating box 8.
【００２２】[0022]
【表１】 [Table 1]
【００２３】このようにして得た断熱箱体８は外観上、
変形等もなく問題なかったので、解体し、硬質ウレタン
フォーム７をサンプリングした。このときの密度、熱伝
導率と気泡内ガス組成測定結果を（表１）に示した。The heat-insulating box 8 thus obtained is
Since there was no deformation or the like and there was no problem, it was disassembled and the rigid urethane foam 7 was sampled. The measurement results of the density, thermal conductivity, and gas composition in bubbles at this time are shown in (Table 1).
【００２４】なお、同時に比較例としてポリビニルアル
コール等のプラスチックスで被膜処理していない炭酸ガ
ス吸着剤を予めプレミックス成分に混合した後、イソシ
アネ−ト成分と混合して充填成型した硬質ウレタンフォ
ームの密度、熱伝導率と気泡内ガス組成測定結果を（表
１）に示した。At the same time, as a comparative example, a carbon dioxide adsorbent not coated with plastics such as polyvinyl alcohol was mixed in advance with the premix component, and then mixed with the isocyanate component to fill and mold a hard urethane foam. The measurement results of density, thermal conductivity and gas composition in bubbles are shown in (Table 1).
【００２５】また、炭酸ガス吸着剤を加えずに充填成型
した硬質ウレタンフォームの密度、熱伝導率と気泡内ガ
ス組成測定結果も（表１）に示した。Further, the results of measuring the density, thermal conductivity and gas composition in bubbles of a hard urethane foam filled and molded without adding a carbon dioxide adsorbent are also shown in (Table 1).
【００２６】このように本発明の発泡断熱材は、気泡内
ガス組成として炭酸ガスの比率が大幅に低下し、硬質ウ
レタンフォームの熱伝導率も比較例の炭酸ガス吸着剤を
加えない場合に比べて約１０％改善していることが判っ
た。As described above, in the foamed heat insulating material of the present invention, the ratio of carbon dioxide gas in the gas composition in the bubbles is significantly reduced, and the thermal conductivity of the rigid urethane foam is also higher than that of the comparative example in which the carbon dioxide gas adsorbent is not added. It was found that the improvement was about 10%.
【００２７】また、ポリビニルアルコールで被膜処理し
ていない炭酸ガス吸着剤を予めプレミックス成分に混合
した後、イソシアネ−ト成分と混合して充填成型した硬
質ウレタンフォームでは、炭酸ガス比率は低減している
が、熱伝導率は約３％程度しか改善がなく、特に密度が
大幅に増加していることが判った。これは、ポリビニル
アルコールで被膜処理せず、水分を含むプレミックス成
分に予め混合して使用したため、活性炭が水分を吸着
し、発泡剤として機能しなかったため大幅に密度が増加
し、固体熱伝導率の悪影響もあり、熱伝導率が改善しな
かったためと考えられる。Further, in the case of a hard urethane foam prepared by premixing a carbon dioxide adsorbent which has not been coated with polyvinyl alcohol with a premix component and then mixing and molding the mixture with an isocyanate component, the carbon dioxide gas ratio is reduced. However, it was found that the thermal conductivity improved only by about 3%, and that the density increased significantly. This is because the activated carbon adsorbs water and does not function as a foaming agent because it is used by premixing it with a premix component containing water without coating it with polyvinyl alcohol, resulting in a significant increase in density and solid thermal conductivity. It is considered that the thermal conductivity did not improve due to the adverse effect of.
【００２８】よって、前記発泡断熱材を充填した断熱箱
体は、冷蔵庫、冷凍庫として極めて有用で、優れた断熱
箱体としての品質を確保できるものである。Therefore, the heat-insulating box body filled with the foamed heat-insulating material is extremely useful as a refrigerator and a freezer, and can ensure excellent quality as a heat-insulating box body.
【００２９】[0029]
【発明の効果】以上のように本発明は、有機ポリイソシ
アネ−ト、ポリオ−ル、触媒、整泡剤、発泡剤成分とし
て少なくとも水を含む原料とポリビニルアルコール等の
プラスチックスで被膜処理した炭酸ガス吸着剤を混合撹
拌し、発泡生成して発泡断熱材を得るものであり、さら
に炭酸ガス吸着剤として表面に水酸化カリウム等のアル
カリ金属水酸化物を添着させた活性炭を用いるものであ
り、炭酸ガス吸着剤を混合撹拌において、まず、有機ポ
リイソシアネ−ト、ポリオ−ル、触媒、整泡剤、発泡剤
成分として少なくとも水を含む原料を混合した後、炭酸
ガス吸着剤を混合して発泡断熱材を製造するものである
から、発泡断熱材中の気体熱伝導率の大きな炭酸ガスは
炭酸ガス吸着剤に容易に短時間で吸着除去される。この
結果、得られた発泡断熱材は熱伝導率の優れた高性能の
特性が得られるのである。INDUSTRIAL APPLICABILITY As described above, the present invention provides an organic polyisocyanate, a polyol, a catalyst, a foam stabilizer, a carbon dioxide gas coated with a raw material containing at least water as a foaming agent component and a plastic such as polyvinyl alcohol. The adsorbent is mixed and agitated to form a foamed heat insulating material by foaming, and activated carbon with an alkali metal hydroxide such as potassium hydroxide attached to the surface is used as a carbon dioxide adsorbent. In mixing and stirring a gas adsorbent, first, an organic polyisocyanate, a polyol, a catalyst, a foam stabilizer, and a raw material containing at least water as a foaming agent component are mixed, and then a carbon dioxide adsorbent is mixed to form a foam insulation material. The carbon dioxide gas having a large gas thermal conductivity in the foamed heat insulating material is easily adsorbed and removed by the carbon dioxide gas adsorbent in a short time because it is manufactured. As a result, the obtained foamed heat insulating material has high performance characteristics with excellent thermal conductivity.
【００３０】このように、オゾン層破壊の影響が全く無
く、地球温暖化へ与える影響も極めて少ない炭酸ガスを
発泡剤の主成分とする発泡断熱材を用いる場合において
も、量産品質上問題無く適用でき地球環境保護に寄与で
きる発泡断熱材と断熱箱体を提供するものである。As described above, even when a foamed heat insulating material containing carbon dioxide as a main component of a foaming agent is used without any problem in terms of mass production quality, there is no influence of ozone layer depletion and influence on global warming is extremely small. The object is to provide a foam insulation material and an insulation box body that can contribute to global environment protection.
【図１】本発明の一実施例における断熱箱体を一部切り
欠いた斜視図FIG. 1 is a perspective view in which a heat insulating box according to an embodiment of the present invention is partially cut away.
【図２】本発明の一実施例における原料を注入する直前
の断熱箱体の断面図FIG. 2 is a cross-sectional view of a heat insulating box immediately before a raw material is injected in an embodiment of the present invention.
【図３】本発明の一実施例における原料を注入した後の
断熱箱体の断面図FIG. 3 is a cross-sectional view of the heat insulating box after the raw materials are injected in the embodiment of the present invention.
１ 炭酸ガス吸着剤 ３ 内箱 ４ 外箱 ５ 箱体空間部 ８ 断熱箱体 1 Carbon dioxide adsorbent 3 Inner box 4 Outer box 5 Box space 8 Insulation box
フロントページの続き (72)発明者 天良 智尚 大阪府東大阪市高井田本通３丁目22番地 松下冷機株式会社内Continuation of the front page (72) Inventor Tomohisa Ara 3-22 Takaidahondori, Higashi-Osaka City, Osaka Prefecture Matsushita Cold Machinery Co., Ltd.
Claims (4)
媒、整泡剤、発泡剤成分として少なくとも水を含む原料
とポリビニルアルコール等のプラスチックスで被膜処理
した炭酸ガス吸着剤を混合撹拌し発泡生成した発泡断熱
材。1. An organic polyisocyanate, a polyol, a catalyst, a foam stabilizer, a raw material containing at least water as a foaming agent component, and a carbon dioxide adsorbent coated with a plastic such as polyvinyl alcohol are mixed and stirred to generate foam. Foam insulation.
ム等のアルカリ金属水酸化物を添着させた活性炭を用い
た請求項１記載の発泡断熱材。2. The foamed heat insulating material according to claim 1, wherein activated carbon having an alkali metal hydroxide such as potassium hydroxide impregnated on its surface is used as the carbon dioxide adsorbent.
ず、有機ポリイソシアネ−ト、ポリオ−ル、触媒、整泡
剤、発泡剤成分として少なくとも水を含む原料を予め混
合した後、炭酸ガス吸着剤を混合してなる請求項１記載
の発泡断熱材の製造方法。3. In mixing and stirring a carbon dioxide adsorbent, first, an organic polyisocyanate, a polyol, a catalyst, a foam stabilizer, and a raw material containing at least water as a foaming agent component are mixed in advance, and then the carbon dioxide adsorbent is mixed. The method for producing a foamed heat insulating material according to claim 1, wherein
って形成される空間部に請求項１記載の発泡断熱材を充
填して成る断熱箱体。4. A heat insulating box body comprising an outer box, an inner box and a space formed by the outer box and the inner box filled with the foamed heat insulating material according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21367294A JPH0873637A (en) | 1994-09-07 | 1994-09-07 | Foamed heat-insulating material, method for producing foamed heat-insulating material and heat-insulating box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21367294A JPH0873637A (en) | 1994-09-07 | 1994-09-07 | Foamed heat-insulating material, method for producing foamed heat-insulating material and heat-insulating box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0873637A true JPH0873637A (en) | 1996-03-19 |
Family
ID=16643063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21367294A Pending JPH0873637A (en) | 1994-09-07 | 1994-09-07 | Foamed heat-insulating material, method for producing foamed heat-insulating material and heat-insulating box |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0873637A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999024499A1 (en) * | 1997-11-06 | 1999-05-20 | Matsushita Refrigeration Company | Foamed insulating material, insulating box body made using said foamed insulating material, and process for preparing foamed insulating material |
-
1994
- 1994-09-07 JP JP21367294A patent/JPH0873637A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999024499A1 (en) * | 1997-11-06 | 1999-05-20 | Matsushita Refrigeration Company | Foamed insulating material, insulating box body made using said foamed insulating material, and process for preparing foamed insulating material |
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