JPH03296592A - Cold insulator - Google Patents
Cold insulatorInfo
- Publication number
- JPH03296592A JPH03296592A JP2099426A JP9942690A JPH03296592A JP H03296592 A JPH03296592 A JP H03296592A JP 2099426 A JP2099426 A JP 2099426A JP 9942690 A JP9942690 A JP 9942690A JP H03296592 A JPH03296592 A JP H03296592A
- Authority
- JP
- Japan
- Prior art keywords
- insulating material
- cold insulating
- parts
- organic substance
- hydrophilic organic
- 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
- 239000012212 insulator Substances 0.000 title 1
- 239000000126 substance Substances 0.000 claims abstract description 26
- 239000000843 powder Substances 0.000 claims abstract description 23
- 239000011347 resin Substances 0.000 claims abstract description 21
- 229920005989 resin Polymers 0.000 claims abstract description 21
- 239000002202 Polyethylene glycol Substances 0.000 claims abstract description 5
- 229920001223 polyethylene glycol Polymers 0.000 claims abstract description 5
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 3
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 3
- 239000011810 insulating material Substances 0.000 claims description 28
- 239000000203 mixture Substances 0.000 claims description 15
- 239000007864 aqueous solution Substances 0.000 claims description 12
- 230000002745 absorbent Effects 0.000 claims description 11
- 239000002250 absorbent Substances 0.000 claims description 11
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- -1 Seviolite Chemical compound 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 229920001577 copolymer Polymers 0.000 claims description 6
- 239000004927 clay Substances 0.000 claims description 4
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims description 4
- 229920000578 graft copolymer Polymers 0.000 claims description 4
- 150000005846 sugar alcohols Polymers 0.000 claims description 4
- 229920002125 Sokalan® Polymers 0.000 claims description 3
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 claims description 3
- 239000004584 polyacrylic acid Substances 0.000 claims description 3
- 229920001451 polypropylene glycol Polymers 0.000 claims description 3
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 claims description 3
- 229910002012 Aerosil® Inorganic materials 0.000 claims description 2
- 239000005909 Kieselgur Substances 0.000 claims description 2
- 229920002873 Polyethylenimine Polymers 0.000 claims description 2
- 229910021536 Zeolite Inorganic materials 0.000 claims description 2
- 150000005215 alkyl ethers Chemical class 0.000 claims description 2
- 239000000440 bentonite Substances 0.000 claims description 2
- 229910000278 bentonite Inorganic materials 0.000 claims description 2
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims description 2
- 239000000835 fiber Substances 0.000 claims description 2
- 235000013312 flour Nutrition 0.000 claims description 2
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 2
- 229920000233 poly(alkylene oxides) Polymers 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims description 2
- 239000000741 silica gel Substances 0.000 claims description 2
- 229910002027 silica gel Inorganic materials 0.000 claims description 2
- 125000000542 sulfonic acid group Chemical group 0.000 claims description 2
- 239000000454 talc Substances 0.000 claims description 2
- 229910052623 talc Inorganic materials 0.000 claims description 2
- 239000002699 waste material Substances 0.000 claims description 2
- 239000002023 wood Substances 0.000 claims description 2
- 239000010457 zeolite Substances 0.000 claims description 2
- 239000005995 Aluminium silicate Substances 0.000 claims 1
- 125000001931 aliphatic group Chemical group 0.000 claims 1
- 235000012211 aluminium silicate Nutrition 0.000 claims 1
- 239000002131 composite material Substances 0.000 claims 1
- 238000004132 cross linking Methods 0.000 claims 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
- 229910044991 metal oxide Inorganic materials 0.000 claims 1
- 150000004706 metal oxides Chemical class 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 20
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 abstract description 6
- 238000010521 absorption reaction Methods 0.000 abstract description 4
- 239000002245 particle Substances 0.000 abstract description 2
- 230000001172 regenerating effect Effects 0.000 abstract 1
- 238000005338 heat storage Methods 0.000 description 13
- 238000001816 cooling Methods 0.000 description 11
- 239000012774 insulation material Substances 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 235000019441 ethanol Nutrition 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000005416 organic matter Substances 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 229920002554 vinyl polymer Polymers 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 229920000089 Cyclic olefin copolymer Polymers 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229920006322 acrylamide copolymer Polymers 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 229940057995 liquid paraffin Drugs 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 201000009240 nasopharyngitis Diseases 0.000 description 1
- 229940068886 polyethylene glycol 300 Drugs 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 150000003457 sulfones Chemical class 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Absorbent Articles And Supports Therefor (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は食品及び健康産業の分野で保冷材として用いら
れる熱媒体に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a heat transfer medium used as a cold insulating material in the food and health industries.
（従来の技術）
従来、保冷剤として最も一般的なものは氷である。これ
は古くより鮮魚、肉などの食品の保冷や、氷嚢、氷枕等
に用いられる。氷は蓄熱量は大であるが用途によっては
（特に氷嚢、氷枕等人体の冷却用）固いため使用時に不
快感を与えるものである。一方、柔軟性を維持した保冷
剤としては多価アルコール水溶液などを袋づめした方法
（特開昭５６−４０１３８）又、吸水性樹脂に多価アル
コール水溶液を含浸させた方法（特開昭６２−２６７３
８６、特開昭５７−１４６７９）が提案されているが蓄
熱量は不充分である。(Prior Art) Conventionally, the most common cold pack is ice. It has been used since ancient times to keep foods such as fresh fish and meat cold, and to make ice packs and ice pillows. Ice has a large amount of heat storage, but depending on its use (especially ice packs, ice pillows, etc. for cooling the human body), it is hard and can cause discomfort when used. On the other hand, as a cold pack that maintains its flexibility, there is a method in which a polyhydric alcohol aqueous solution is packaged in a bag (Japanese Patent Laid-Open No. 56-40138), and a method in which a water-absorbing resin is impregnated with a polyhydric alcohol aqueous solution (Japanese Patent Laid-Open No. 62-1999). 2673
86, JP-A-57-14679) has been proposed, but the amount of heat storage is insufficient.
（解決しようとする問題点）
上記、問題を解決するため一１８℃に冷却しても柔軟性
を保ち、かつ蓄熱量が大である保冷剤が提案されている
（特開昭５７−１５０７６９）。(Problems to be solved) In order to solve the above-mentioned problems, a cold pack has been proposed that retains its flexibility even when cooled to -18°C and has a large amount of heat storage (Japanese Patent Application Laid-Open No. 150769/1983). .
しかしこの特許では水とオイルのエマルジョン形成が必
要なため水とオイルの比率が制限され、保冷能力を向上
させることができない。このように＝１８℃に冷却して
も柔軟な保冷剤については蓄熱量が小さいという欠点が
あった。However, this patent requires the formation of an emulsion of water and oil, which limits the ratio of water and oil, making it impossible to improve the cooling ability. Even when cooled to 18° C. in this way, the flexible ice pack had the disadvantage of a small amount of heat storage.
（問題を解決するための手段）
上記の問題点を解決するため本発明者らは鋭意研究した
結果、高吸水性樹脂１００部に対し分子量１００以上の
親水性有機物（ａ）を含んでなる水溶液１００〜５００
００部からなる組成物（Ａ）１００部に対し有機及び又
は無機の粉末０．１〜１００部を混合することにより、
−１８℃に冷却しても柔軟性を保ちかつ蓄熱量の大なる
保冷材を見い出した。(Means for Solving the Problem) As a result of intensive research by the present inventors to solve the above problems, an aqueous solution containing a hydrophilic organic substance (a) with a molecular weight of 100 or more per 100 parts of a superabsorbent resin 100-500
By mixing 0.1 to 100 parts of organic and/or inorganic powder to 100 parts of composition (A) consisting of 0.00 parts,
We have discovered a cold insulating material that retains flexibility and stores a large amount of heat even when cooled to -18°C.
本発明に用いられる高吸水性樹脂は自重の１〜１０００
倍吸水するものならば特に制限はなく、ポリアクリル酸
部分中和物架橋体、デンプン−アクリロニトリルグラフ
ト重合体の中和物、デンプン−アクリル酸グラフト重合
体の中和物、酢酸ビニル−アクリル酸エステル共重合体
のケン化物、アクリロニトリル共重合体のケン化物、ア
クリロニトリル共重合体もしくはアクリルアミド共重合
体の加水分解物またはこれらの架橋体、ポリビニルアル
ゴール、自己架橋型ポリアクリル酸ナトリウム、マレイ
ン酸−α−オレフィン共重合体及びスルホン酸基を有す
る高分子化合物などいずれも使用できるが、ポリアクリ
ル酸部分中和物架橋体、デンプン−アクリル酸グラフト
重合体中和物、自己架橋型ポリアクリル酸ナトリウムお
よびスルホン酸基を有する高分子化合物が吸水倍率の点
から好ましい。The super absorbent resin used in the present invention has a weight of 1 to 1000 of its own weight.
There is no particular restriction as long as it absorbs twice as much water, such as partially neutralized crosslinked polyacrylic acid, neutralized starch-acrylonitrile graft polymer, neutralized starch-acrylic acid graft polymer, vinyl acetate-acrylic ester. Saponified products of copolymers, saponified products of acrylonitrile copolymers, hydrolyzed products of acrylonitrile copolymers or acrylamide copolymers, or crosslinked products thereof, polyvinyl algol, self-crosslinked sodium polyacrylate, maleic acid-α- Any of olefin copolymers and polymeric compounds having sulfonic acid groups can be used, but partially neutralized crosslinked polyacrylic acid, neutralized starch-acrylic acid graft polymer, self-crosslinked sodium polyacrylate, and sulfone A polymer compound having an acid group is preferable from the viewpoint of water absorption capacity.
本発明に用いられる高吸水性樹脂の形状は特に制限はな
く、顆粒状、微粉末、球状等いずれも使用できる。高吸
水性樹脂１００部に対する親水性有機物の水溶液の添加
量は１００〜５００００部が必要である。添加水量が１
００部未満では蓄熱量が充分でなく、５００００部を超
えると高吸水性樹脂が吸水しきれない、好ましい添加量
は１００部〜１００００部である。The shape of the superabsorbent resin used in the present invention is not particularly limited, and any of granular, fine powder, and spherical shapes can be used. The amount of the aqueous solution of the hydrophilic organic substance added to 100 parts of the superabsorbent resin is required to be 100 to 50,000 parts. Added water amount is 1
If it is less than 0.00 parts, the amount of heat storage will not be sufficient, and if it exceeds 50,000 parts, the superabsorbent resin will not be able to fully absorb water.The preferable addition amount is 100 to 10,000 parts.
親水性有機物の水溶液中の濃度は、１〜７０重量％が必
要である。７０重量％以上では吸水性樹脂の吸水能が大
幅に低下し、親水性有機物水溶液を吸収できないし、又
、保冷材としての蓄熱量が低下する。１重量％未濶では
添加効果が少さく、１８℃に冷却時の柔軟性が十分でな
い。経済性および蓄熱性の面から好ましい濃度はＳｓ〜
５０重量％である。The concentration of the hydrophilic organic substance in the aqueous solution must be 1 to 70% by weight. If it exceeds 70% by weight, the water absorbing ability of the water absorbent resin will be significantly reduced, it will not be able to absorb an aqueous solution of hydrophilic organic matter, and the amount of heat storage as a cold insulating material will be reduced. If 1% by weight is not added, the effect of addition is small and the flexibility upon cooling to 18° C. is insufficient. In terms of economy and heat storage, the preferred concentration is Ss~
It is 50% by weight.
親水性有機物（ａ）としては、分子量１００以上で親水
性を有する有機物であればよいがポリエチレングリコー
ル、ポリプロピレングリコール、ポリエチレンイミン、
ポリアルキレンオキシドアルキルエーテル、エチレンオ
キシド−プロピレンオキシド共重合物、ポリビニルアル
コールが好ましい親水性有機物としてあげられる。The hydrophilic organic substance (a) may be any organic substance having a molecular weight of 100 or more and having hydrophilic properties, such as polyethylene glycol, polypropylene glycol, polyethylene imine,
Preferred hydrophilic organic substances include polyalkylene oxide alkyl ether, ethylene oxide-propylene oxide copolymer, and polyvinyl alcohol.
親水性有機物水溶液にした場合、吸水性樹脂の吸水倍率
の面および保冷材としての蓄熱量の面から特に好ましい
のはポリエチレングリコール、ポリプロピレングリコー
ル、エチレンオキシド−プロピレンオキシド共重合物で
ある。When made into an aqueous solution of a hydrophilic organic substance, polyethylene glycol, polypropylene glycol, and ethylene oxide-propylene oxide copolymer are particularly preferred from the viewpoint of the water absorption capacity of the water-absorbing resin and the amount of heat storage as a cold insulating material.
又、−１８℃冷却時の柔軟性を増大させるために分子量
１００未満の低分子親水性有機物（ｂ）を親水性有機物
（ａ）と併用することが好ましい。Further, in order to increase the flexibility upon cooling to -18°C, it is preferable to use a low-molecular hydrophilic organic substance (b) with a molecular weight of less than 100 in combination with the hydrophilic organic substance (a).
好ましい低分子親水性有機物（ｂ）としては、メタノー
ル、エタノール、プロパツール等の脂肪族−価アルコー
ル、グリセリン、エチレングリコール等の多価アルコー
ルをあげることができる。Preferred low molecular weight hydrophilic organic substances (b) include aliphatic alcohols such as methanol, ethanol and propatool, and polyhydric alcohols such as glycerin and ethylene glycol.
組成物（Ａ）とするための水溶液中の低分子親水性有機
物（ｂ）の濃度は親水性有機物（ａ）の濃度より少さく
、又、それらの合計濃度は１〜７０ｗｔ％とすることが
好ましい。合計濃度７０ｗｔ％以上では高吸水性樹脂の
吸水能が大幅に低下し、これら有機物水溶液を吸収でき
ず、又、保冷材としての蓄熱量が低下する場合がある。The concentration of the low-molecular hydrophilic organic substance (b) in the aqueous solution to form the composition (A) is lower than the concentration of the hydrophilic organic substance (a), and the total concentration thereof may be 1 to 70 wt%. preferable. If the total concentration is 70 wt% or more, the water absorption capacity of the superabsorbent resin will be significantly reduced, and these organic matter aqueous solutions may not be absorbed, and the amount of heat storage as a cold insulating material may be reduced.
又、（ｂ）の濃度が（ａ）より高いと保冷材の蓄熱量が
低くなる場合がある。（ａ） 、（ｂ）の合計濃度が１
％未満であると一１８℃冷却時の柔軟性が十分でな（、
蓄熱量の面から（ａ）＋（ｂ）のより好ましい濃度は５
〜５０重量％である。Furthermore, if the concentration of (b) is higher than that of (a), the amount of heat stored in the cold insulating material may decrease. The total concentration of (a) and (b) is 1
If it is less than %, the flexibility during cooling from -18℃ will not be sufficient (,
In terms of heat storage, the more preferable concentration of (a) + (b) is 5
~50% by weight.
使用する親水性有機物の量を減少させ、冷却時の柔軟性
を維持したまま単位重量あたりの蓄熱量を増大させるた
めに、有機又は無機の粉末を使用する。ここで用いられ
る粉末はパルプ、紙、木粉、繊維くず、アエロジル、シ
リカゲル、アルミ−゛二、＼−・
す、けいそう土、クレー、セピオラ−１″＝’）、ラジ
オライト、ベントナイト、モンモリロナイト、ゼオライ
ト、活性白土、タルク、などから１種又は２種以上を選
ぶことができる。Organic or inorganic powders are used to reduce the amount of hydrophilic organics used and increase the amount of heat storage per unit weight while maintaining flexibility upon cooling. The powders used here are pulp, paper, wood flour, fiber waste, Aerosil, silica gel, aluminum-2, \--su, diatomaceous earth, clay, sepiola-1''), radiolite, bentonite, montmorillonite. One or more types can be selected from , zeolite, activated clay, talc, etc.
本発明に用いられる有機および／又は無機の粉末の形状
には特に制限がなく、球状、棒状、円板状、不定形等い
ずれも用いることができる。又、有機および／又は無機
の粉末の大きさに特に制限はないが、好ましくは粒度分
布の中間に位置する長径は０．０１μ〜１０ｍｍであり
、さらに好ましくは１０μ〜１ｍｍである。長径１０ｍ
ｍ以上では一１８℃冷却時の柔軟性が悪くなるときがあ
る。The shape of the organic and/or inorganic powder used in the present invention is not particularly limited, and any shapes such as spherical, rod-like, disk-like, and irregular shapes can be used. Further, there is no particular restriction on the size of the organic and/or inorganic powder, but preferably the long axis located in the middle of the particle size distribution is 0.01 μm to 10 mm, more preferably 10 μm to 1 mm. Long diameter 10m
If the temperature is higher than m, the flexibility during cooling may deteriorate at -18°C.
また、粉末のかさ密度にも特に制限はないが、１ ｇ／
ｃｍ”未満が好ましく、さらに好ましくは０゜５ ｇ／
ｃｍ”未満である。かさ密度が１ ｇ／ｃｍ”より大き
いと一１８℃冷却時の柔軟性が悪くなるときがある。There is also no particular limit to the bulk density of the powder, but 1 g/
cm”, more preferably less than 0°5 g/
If the bulk density is greater than 1 g/cm", the flexibility upon cooling from -18° C. may deteriorate.
粉末の使用量は組成物（Ａ）１００部に対して０．１〜
１００部が必要である。使用量が０．１部未満では冷却
時の柔軟性が維持されず、１００部を超えると蓄熱量が
小さくなる。この有機又は無機の粉末の使用量は、組成
物（Ａ１１０．０部に対して好ましくは１〜５０部であ
る。The amount of powder used is 0.1 to 100 parts of composition (A).
100 copies are required. If the amount used is less than 0.1 part, flexibility during cooling will not be maintained, and if it exceeds 100 parts, the amount of heat storage will be small. The amount of this organic or inorganic powder used is preferably 1 to 50 parts based on 10.0 parts of the composition (A11).
本発明による保冷材を調製する上で高吸水性樹脂、水、
親水性有機物（ａ）、有機及び又は無機の粉末の投入順
序に特に制限はなく、高吸水性樹脂に水を加えた後、親
水性有機物（ａ）、有機及び又は無機の粉末を混合する
、水に親水性有機物（ａ）と有様又は無機の粉末を加え
たものを高吸水性樹脂と混合するなどいく通りかの方法
がある。以下に実施例により本発明の詳細な説明するが
、本発明がこれら実施例にのみ限定されるものではない
。In preparing the cold insulation material according to the present invention, super absorbent resin, water,
There is no particular restriction on the order of adding the hydrophilic organic substance (a) and the organic and/or inorganic powder, and after adding water to the super absorbent resin, the hydrophilic organic substance (a) and the organic and/or inorganic powder are mixed. There are several methods, such as mixing water with a hydrophilic organic substance (a) and organic or inorganic powder and a super absorbent resin. The present invention will be described in detail below with reference to Examples, but the present invention is not limited only to these Examples.
尚、本文及び実施例中の部とは重量部をあられす。Note that parts in the text and examples refer to parts by weight.
実施例１
高吸水性樹脂（アクアリックＣＡ、日本触媒社製）１０
０部と水１０００部を混合した。これに親水性有機物（
ａ）（ポリエチレングリコール３００）１００部を混合
して組成物（Ａ）を得た。この、１．“′
ようにして傅−られた組成物（Ａ）１００部に粉末とし
てパルプ（Ｗ５、重陽国策パルプ社製）４部を入れ撹拌
し保冷材を得た。得られた保冷材のうち１５０ｇをポリ
エチレン製袋に入れ袋詰めした保冷材を得た。Example 1 Super absorbent resin (Aqualic CA, manufactured by Nippon Shokubai Co., Ltd.) 10
0 parts and 1000 parts of water were mixed. This is combined with hydrophilic organic matter (
a) 100 parts of (polyethylene glycol 300) were mixed to obtain a composition (A). This, 1. 4 parts of pulp (W5, manufactured by Chongyang Kokusaku Pulp Co., Ltd.) as a powder was added to 100 parts of the composition (A) prepared in the above manner and stirred to obtain a cold insulating material. 150 g of the obtained cold insulating material was A cold insulating material was obtained which was packed in a polyethylene bag.
このようにして得られた袋詰めした保冷材を一１８℃に
冷却し、その時の表面の柔軟性、および室温に放置（＋
２０℃）してから表面温度が＋１０℃になるまでの時間
（保冷時間）を測定した。結果を表１に示した。The bagged cold insulating material obtained in this way was cooled to -18°C, and the surface flexibility at that time and left at room temperature (+
20°C) until the surface temperature reached +10°C (cooling time) was measured. The results are shown in Table 1.
実施例２〜１２および比較例１〜３
実施例１において高吸水性樹脂の種類、水の使用量およ
び親水性有機物（ａ）の種類及び量を表１に記した通り
に変えたほかは実施例１と同様の操作を繰返して組成物
（Ａ）を得た。このようにして得られた組成物（Ａ）１
００部に表１に記した種類と量の粉末を加え、以後実施
例１と同様の操作を繰返して保冷材および袋詰めした保
冷材を得た。Examples 2 to 12 and Comparative Examples 1 to 3 Same as Example 1 except that the type of superabsorbent resin, the amount of water used, and the type and amount of hydrophilic organic substance (a) were changed as shown in Table 1. The same operation as in Example 1 was repeated to obtain a composition (A). Composition (A) 1 thus obtained
00 parts were added with the types and amounts of powders shown in Table 1, and the same operations as in Example 1 were repeated to obtain a cold insulating material and a bagged cold insulating material.
このようにして得た袋づめした保冷材を実施例１と同様
にして一１８℃冷却時の柔軟性及び保冷時間を測定し、
結果を表１に示した。The thus obtained bagged cold insulating material was measured for flexibility and cold storage time when cooled to -18°C in the same manner as in Example 1.
The results are shown in Table 1.
比較例４
高吸水性樹脂（アクアリックＣＡ、日本触媒製）１００
部と水１０００部と混合した。ついで疎水性溶媒として
流動パラフィン１００部を入れ撹拌し、次いで粉末とし
てパルプ１２部を入れ撹拌混合した。得られた混合物の
うち１５０ｇをポリエチレン製袋に入れ袋詰めした保冷
材を得た。Comparative Example 4 Super absorbent resin (Aqualic CA, manufactured by Nippon Shokubai) 100
1000 parts of water. Next, 100 parts of liquid paraffin was added as a hydrophobic solvent and stirred, and then 12 parts of pulp as powder was added and mixed with stirring. A cold insulating material was obtained by putting 150 g of the obtained mixture into a polyethylene bag and packing it.
このようにして得た袋づめした保冷材を実施例実施例１
３
高吸水性樹脂（アクアリックＣＡ、日本触゛媒社製）１
００部と水１０００部を混合した。これに親水性有機物
（ａ）（ポリエチレングリコール３００）２００部およ
び低分子親水性有機物（ｂ）（エチルアルコール）２０
０部を混合して組成物（Ａ）を得た。このようにして得
られた組成物（Ａ）１００部に粉末としてパルプ（Ｗ５
、山間国策パルプ社製）１０部を入れ撹拌混合し保冷材
を得た。Example 1 of the bagged cold insulation material obtained in this way
3 Super water absorbent resin (Aqualic CA, manufactured by Nippon Shokubai Co., Ltd.) 1
00 parts and 1000 parts of water were mixed. Add to this 200 parts of a hydrophilic organic substance (a) (300 parts of polyethylene glycol) and 20 parts of a low molecular weight hydrophilic organic substance (b) (ethyl alcohol).
0 parts were mixed to obtain a composition (A). Pulp (W5) was added as a powder to 100 parts of the composition (A) thus obtained.
, manufactured by Yamakokusaku Pulp Co., Ltd.) were added and mixed with stirring to obtain a cold insulating material.
得られた保冷材のうち１５０ｇをポリエチレン製袋に入
れ袋詰めした保冷材を得た。A cold insulating material was obtained by putting 150 g of the obtained cold insulating material into a polyethylene bag and packing it.
このようにして得られた袋詰めした保冷材を実施例１と
同様にして一１８℃冷却時の柔軟性および保冷時間を測
定した。結果を表２に示した。The thus obtained bagged cold insulating material was measured in the same manner as in Example 1, and its flexibility and cold storage time when cooled to -18°C were measured. The results are shown in Table 2.
実施例１４〜１７および比較例５〜６
実施例１３において高吸水性樹脂の種類、水の使用量、
親水性有機物（ａ）の種類及び量、および低分子親水性
有機物（ｂ）の種類及び量を表２に記した通りに変えた
ほかは実施例１３と同様の操作を繰返して組成物（Ａ）
を得た。このようにして得られた組成物（Ａ）１００部
に表２に記した種類と量の粉末を加え、以後実施例１３
と同様の操作を繰返して保冷材および袋詰めした保冷材
を得た。Examples 14 to 17 and Comparative Examples 5 to 6 In Example 13, the type of super absorbent resin, the amount of water used,
A composition (A )
I got it. To 100 parts of the composition (A) thus obtained were added powders of the type and amount shown in Table 2, and hereinafter Example 13
The same operation as above was repeated to obtain a cold insulating material and a bagged cold insulating material.
このようにして得た袋づめした保冷材を実施例１と同様
にして一１８℃冷却時の柔軟性及び保冷時間を測定し、
結果を表２に示した。The thus obtained bagged cold insulating material was measured for flexibility and cold storage time when cooled to -18°C in the same manner as in Example 1.
The results are shown in Table 2.
実施例１８
実施例１〜１７において得られた袋詰めした保冷材を冷
却（−１８℃）−室温放置（＋ ２０’Ｃ）の繰返しテ
ストをそれぞれ１００回行なったが保冷性能および柔軟
性の変化はいずれも見られなかった。Example 18 The bagged cold insulation materials obtained in Examples 1 to 17 were subjected to a repeated test of cooling (-18°C) and leaving at room temperature (+20'C) 100 times, but there were no changes in cold storage performance and flexibility. None were seen.
表１
（発明の効果）
本発明による保冷材は従来品より高い蓄熱性能をもち、
しかも−１８℃冷却時でも柔軟性を維持でき長期間の繰
り返し使用が可能である。Table 1 (Effects of the invention) The cold insulation material according to the present invention has higher heat storage performance than conventional products,
Moreover, it maintains its flexibility even when cooled to -18°C, and can be used repeatedly for a long period of time.
Claims (1)
有機物（ａ）を含んでなる水溶液１００〜５００００部
とからなる組成物（Ａ）１００部および有機及び／又は
無機の粉末０．１〜１００部からなる保冷材。 ２、親水性有機物（ａ）がポリエチレングリコール、ポ
リプロピレングリコール、ポリエチレンイミン、ポリア
ルキレンオキシドアルキルエーテル、エチレンオキシド
−プロピレンオキシド共重合物、ポリビニルアルコール
より選ばれた少なくとも一種である請求項１記載の保冷
剤。 ３、親水性有機物（ａ）を水溶液中に１〜７０重量％の
範囲で含有する請求項１または２記載の保冷材。 ４、組成物（Ａ）を形成する水溶液が、さらに、分子量
１００未満の低分子量親水性有機物（ｂ）を含有するも
のである請求項１〜３記載の保冷材。 ５、低分子量親水性有機物（ｂ）が多価アルコール、又
はＣ＿１〜Ｃ＿４の脂肪族１価アルコールである請求項
４記載の保冷材。 ６、高吸水性樹脂がポリアクリル酸部分中和物架橋体、
デンプン−アクリル酸グラフト重合体の中和物、自己架
橋型ポリアクリル酸ナトリウムおよびスルホン酸基を有
する高分子化合物よりなる群から選ばれた少なくとも１
種のものである請求項１〜５記載の保冷材。 ７、有機又は無機の粉末がパルプ、紙、木粉、繊維くず
、アエロジル、シリカゲル、金属酸化物粉末、金属粉末
、およびそれらの複合体、けいそう土、クレー、セビオ
ライト、ラジオライト、ベントナイト、モンモリロナイ
ト、タルク、カオリン、ゼオライト、活性白土より選ば
れた１種又は２種以上である請求項１〜６記載の保冷材
。[Scope of Claims] 1. 100 parts of a composition (A) consisting of 100 parts of a super absorbent resin and 100 to 50,000 parts of an aqueous solution containing a hydrophilic organic substance (a) with a molecular weight of 100 or more, and organic and/or inorganic A cold insulating material consisting of 0.1 to 100 parts of powder. 2. The ice pack according to claim 1, wherein the hydrophilic organic substance (a) is at least one selected from polyethylene glycol, polypropylene glycol, polyethylene imine, polyalkylene oxide alkyl ether, ethylene oxide-propylene oxide copolymer, and polyvinyl alcohol. 3. The cold insulating material according to claim 1 or 2, which contains the hydrophilic organic substance (a) in an amount of 1 to 70% by weight in the aqueous solution. 4. The cold insulating material according to any one of claims 1 to 3, wherein the aqueous solution forming the composition (A) further contains a low molecular weight hydrophilic organic substance (b) having a molecular weight of less than 100. 5. The cold insulating material according to claim 4, wherein the low molecular weight hydrophilic organic substance (b) is a polyhydric alcohol or a C_1 to C_4 aliphatic monohydric alcohol. 6. The super absorbent resin is a crosslinked partially neutralized polyacrylic acid product,
At least one selected from the group consisting of a neutralized starch-acrylic acid graft polymer, a self-crosslinking sodium polyacrylate, and a polymer compound having a sulfonic acid group.
The cold insulating material according to any one of claims 1 to 5, which is a seed material. 7. Organic or inorganic powders include pulp, paper, wood flour, fiber waste, Aerosil, silica gel, metal oxide powder, metal powder, and composites thereof, diatomaceous earth, clay, Seviolite, radiolite, bentonite, montmorillonite. 7. The cold insulating material according to claim 1, wherein the cold insulating material is one or more selected from , talc, kaolin, zeolite, and activated clay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2099426A JPH03296592A (en) | 1990-04-17 | 1990-04-17 | Cold insulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2099426A JPH03296592A (en) | 1990-04-17 | 1990-04-17 | Cold insulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03296592A true JPH03296592A (en) | 1991-12-27 |
Family
ID=14247132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2099426A Pending JPH03296592A (en) | 1990-04-17 | 1990-04-17 | Cold insulator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03296592A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0586361A (en) * | 1991-03-06 | 1993-04-06 | Sanyo Chem Ind Ltd | Gel-like cold storage material |
| CN100549101C (en) | 2006-04-13 | 2009-10-14 | 珠海国佳高分子新材料有限公司 | The preparation method who contains sodium aluminum silicate colloidal composite materials with high water absorbing and retaining performances |
| CN109825254A (en) * | 2019-03-14 | 2019-05-31 | 华南农业大学 | A kind of polyethylene glycol wood powder composite phase-change energy storage material and its preparation method and application |
-
1990
- 1990-04-17 JP JP2099426A patent/JPH03296592A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0586361A (en) * | 1991-03-06 | 1993-04-06 | Sanyo Chem Ind Ltd | Gel-like cold storage material |
| CN100549101C (en) | 2006-04-13 | 2009-10-14 | 珠海国佳高分子新材料有限公司 | The preparation method who contains sodium aluminum silicate colloidal composite materials with high water absorbing and retaining performances |
| CN109825254A (en) * | 2019-03-14 | 2019-05-31 | 华南农业大学 | A kind of polyethylene glycol wood powder composite phase-change energy storage material and its preparation method and application |
| CN109825254B (en) * | 2019-03-14 | 2021-03-16 | 华南农业大学 | A kind of polyethylene glycol wood powder composite phase change energy storage material and preparation method and application thereof |
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