JP2585250B2 - Sealant for air battery - Google Patents
Sealant for air batteryInfo
- Publication number
- JP2585250B2 JP2585250B2 JP62055368A JP5536887A JP2585250B2 JP 2585250 B2 JP2585250 B2 JP 2585250B2 JP 62055368 A JP62055368 A JP 62055368A JP 5536887 A JP5536887 A JP 5536887A JP 2585250 B2 JP2585250 B2 JP 2585250B2
- Authority
- JP
- Japan
- Prior art keywords
- air
- sealing material
- battery
- air battery
- adhesive layer
- 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.)
- Expired - Fee Related
Links
- 239000000565 sealant Substances 0.000 title description 5
- 239000003566 sealing material Substances 0.000 claims description 31
- 239000012790 adhesive layer Substances 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 15
- 244000043261 Hevea brasiliensis Species 0.000 claims description 10
- 229920003052 natural elastomer Polymers 0.000 claims description 10
- 229920001194 natural rubber Polymers 0.000 claims description 10
- 229920003211 cis-1,4-polyisoprene Polymers 0.000 claims description 7
- -1 polyethylene Polymers 0.000 claims description 7
- 239000004698 Polyethylene Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 229920000573 polyethylene Polymers 0.000 claims description 4
- 229920000728 polyester Polymers 0.000 claims description 2
- 239000000853 adhesive Substances 0.000 description 11
- 230000001070 adhesive effect Effects 0.000 description 11
- 238000003860 storage Methods 0.000 description 10
- 239000010410 layer Substances 0.000 description 8
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- 239000003792 electrolyte Substances 0.000 description 6
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000003475 lamination Methods 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- 239000003522 acrylic cement Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 229910001882 dioxygen Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000005060 rubber Substances 0.000 description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 239000000899 Gutta-Percha Substances 0.000 description 1
- 240000000342 Palaquium gutta Species 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- XPPKVPWEQAFLFU-UHFFFAOYSA-J diphosphate(4-) Chemical compound [O-]P([O-])(=O)OP([O-])([O-])=O XPPKVPWEQAFLFU-UHFFFAOYSA-J 0.000 description 1
- 235000011180 diphosphates Nutrition 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 235000010985 glycerol esters of wood rosin Nutrition 0.000 description 1
- 229920000588 gutta-percha Polymers 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229920001084 poly(chloroprene) Polymers 0.000 description 1
- 229920001195 polyisoprene Polymers 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M12/00—Hybrid cells; Manufacture thereof
- H01M12/02—Details
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
- H01M50/19—Sealing members characterised by the material
- H01M50/197—Sealing members characterised by the material having a layered structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
- H01M50/19—Sealing members characterised by the material
- H01M50/193—Organic material
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Hybrid Cells (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は空気電気用密封材に関し、さらに詳しくは、
電池の貯蔵中にあっては空気遮断性が良好で、かつ、電
池使用時には剥離性の良好な空気電池用密封材に関す
る。Description: FIELD OF THE INVENTION The present invention relates to a pneumatic sealing material,
The present invention relates to a sealing material for an air battery which has good air blocking properties during storage of a battery and has good peelability when the battery is used.
［従来技術］ 空気電池は、空気中の酵素を正極活物質として利用す
るものであり、例えば、ボタン型構造のものは、第２図
に示したように、底面1aに空気孔２が形成された正極缶
１の底部に、空気拡散層３、酸素ガス還元能を有する多
孔質触媒層と集電体層とからなる空気電極４、および、
例えばポリプロピレン性不織布などよりなるセパレータ
５がこの順序で積層収納されている。一方、負極端子を
兼ねるキャップ７がガスケット６を介して正極缶１の開
口部に嵌合され、かつ、該正極缶１の開口部周縁が内方
へ屈曲されて電池全体を封口している。そして、正極缶
１とキャップ７とにより画成さた空間内に負極合剤８が
充填されている。この負極合剤としては、亜鉛粉末と、
KOH水溶液などのアルカリ電解液との混合物が一般に使
用されている。そして、かかるボタン型空気亜鉛電池に
おいて、空気中の酸素ガスが上記空気孔２から空気拡散
層３に導入され、しかるのち、空気電極４と接触するこ
とにより、活性化（イオン化）が行われる。[Prior Art] An air battery uses an enzyme in the air as a positive electrode active material. For example, a button type structure has an air hole 2 formed in a bottom surface 1a as shown in FIG. An air diffusion layer 3, an air electrode 4 composed of a porous catalyst layer having an oxygen gas reducing ability and a current collector layer,
For example, the separators 5 made of a polypropylene nonwoven fabric or the like are stacked and stored in this order. On the other hand, a cap 7 also serving as a negative electrode terminal is fitted into the opening of the positive electrode can 1 via the gasket 6, and the periphery of the opening of the positive electrode can 1 is bent inward to seal the whole battery. A space defined by the positive electrode can 1 and the cap 7 is filled with the negative electrode mixture 8. As the negative electrode mixture, zinc powder,
Mixtures with alkaline electrolytes such as aqueous KOH are commonly used. Then, in such a button-type zinc-air battery, oxygen gas in the air is introduced into the air diffusion layer 3 from the air hole 2, and then activated (ionized) by contact with the air electrode 4.
一方、かかる空気電池にあっては、保存中に空気が電
池内へ浸入するを防止しなければならないことは言うま
でもなく、電解液が乾燥したり、逆に空気供給孔２から
湿気や炭酸ガスが流入して、空気電極４における、例え
ば活性炭の酸素吸着能が劣化するのを防ぐために、正極
缶１の底面1aに密封材９を粘着して空気供給孔２を閉塞
して保存し、使用時には該密封材を底面1aから剥離せし
めることが一般的である。On the other hand, in such an air battery, it is needless to say that air must be prevented from entering the battery during storage, and the electrolyte dries, and conversely, moisture or carbon dioxide gas flows from the air supply hole 2. In order to prevent the inflow and the deterioration of the oxygen adsorbing ability of the activated carbon, for example, in the air electrode 4, the sealing material 9 is adhered to the bottom surface 1 a of the positive electrode can 1 to close and store the air supply hole 2. Generally, the sealing material is peeled off from the bottom surface 1a.
［発明が解決しようとする問題点］ かかる従来の空気電池用密封材９は、空気遮断性を有
する材料、例えば、ポリエチレン、ポリプロピレンなど
よりなる基材9bと、該基材表面い形成された、例えば、
アクリル系の接着剤層9aとから構成され、該接着剤層9a
を正極缶底面1aに圧接して使用することが一般的であ
る。[Problems to be Solved by the Invention] Such a conventional air battery sealing material 9 is formed by forming a base material 9b made of a material having an air-blocking property, for example, polyethylene or polypropylene, and a surface of the base material 9b. For example,
And an acrylic adhesive layer 9a.
Is generally used by pressing against the bottom surface 1a of the positive electrode can.
しかしながら、このような接着剤層を備えた従来の密
封剤を使用した場合、電池保存中に電気内部の電解液が
乾固したり、あるいは、該密封材を通して空気供給孔か
ら空気中の湿気や炭酸ガス（CO2）が流入するという問
題が生ずる。この場合、空気中の水分と反応して接着剤
が腐食してしまう場合がある。とくに、高温下で貯蔵す
る場合、接着剤層が薄いと電池内部の電解液が蒸気とな
り、この蒸気圧によって密封材が電池の外速に押圧され
て密封材と正極缶底面との間に間隙が形成され、この間
隙がら電解液が外部に漏出する、あるいは、この間隙か
ら空気中の不純物が電池内に入り込み、電解液がこの不
純物と反応して腐食してしまうという問題がある。一
方、このような不都合を避けるために、接着材層の層圧
を厚くすると、電池の使用にあたって、該密封材を剥離
するときに、接着材が正極缶底面に残留し、該電池が収
納される応用機器を著しく汚損するという問題が生ず
る。However, when a conventional sealant having such an adhesive layer is used, the electrolyte inside the electricity dries during storage of the battery, or moisture or air in the air flows from the air supply hole through the sealant. There is a problem that carbon dioxide (CO 2 ) flows in. In this case, the adhesive may corrode by reacting with moisture in the air. In particular, when the battery is stored at a high temperature, if the adhesive layer is thin, the electrolyte inside the battery becomes vapor, and the vapor pressure presses the sealing material to the outer speed of the battery, and a gap is formed between the sealing material and the bottom surface of the cathode can. Is formed, and the electrolyte leaks from the gap to the outside, or impurities in the air enter the battery from the gap, and the electrolyte reacts with the impurities to cause corrosion. On the other hand, if the layer pressure of the adhesive layer is increased in order to avoid such inconveniences, when the battery is used, when the sealing material is peeled off, the adhesive remains on the bottom surface of the positive electrode can and the battery is stored. The problem is that the application equipment is significantly soiled.
そこで、本発明は、従来のかかる問題を解消し、空気
電池保存中にあっては、正極缶の空気供給孔を確実に閉
塞し、かつ、電池液中の水分や、空気中の湿気もしくは
炭酸ガスを透過せしめずに電池の特性を維持し、かつ、
空気電池の使用に際しては、正極缶底面から容易に剥離
してしかも該底面に接着剤が残留することのない空気電
池用密封剤の提供を目的とする。Therefore, the present invention solves the conventional problem, and during storage of the air battery, reliably closes the air supply hole of the positive electrode can, and removes moisture in the battery solution, moisture in the air, or carbon dioxide. Maintain battery characteristics without allowing gas to permeate, and
An object of the present invention is to provide a sealant for an air battery that can be easily peeled off from the bottom surface of a positive electrode can without leaving an adhesive on the bottom surface when the air battery is used.
［問題点を解決するための手段］ 本発明者らは、上記目的を達成すべく、密封材を材料
に焦点を絞って鋭意研究を重ねた結果、密封材の接着層
として、後述するようなシス−1,4−ポリイソプレンを
主剤とする接着剤を使用することとし、その効果を確認
して本発明を完成するに到った。[Means for Solving the Problems] To achieve the above object, the present inventors have conducted intensive studies focusing on the material of the sealing material, and as a result, as an adhesive layer of the sealing material, The present inventors have decided to use an adhesive containing cis-1,4-polyisoprene as a main component, and confirmed the effects thereof, thereby completing the present invention.
すなわち、本発明の空気電池用密封材は、気体不透過
性材料よりなる基材と、該基材上に形成されたシス−1,
4−ポリイソプレンを主剤とする接着剤層とからなるこ
とを特徴とする。That is, the sealing material for an air battery of the present invention includes a base made of a gas-impermeable material, and cis-1,
And 4-adhesive layer mainly composed of polyisoprene.
［具体的説明］ 本発明は、空気電池に使用される密封材の、とくに、
接着剤層を改良したものであり、密封材自信の形状・寸
法等は何ら限定されるものでなく、それは対象とな空気
電池の種類等に応じて適宜設定すればよい。[Specific description] The present invention relates to a sealing material used for an air battery, in particular,
This is an improvement of the adhesive layer, and the shape and dimensions of the sealing material itself are not limited at all, and may be appropriately set according to the type of the target air battery.
第１図に示したように、本発明の空気電池用密封材19
は、基材19bおよび該基材19b上に形成された接着剤層19
bから構成される。基材19bの構成材料は気体不透過性材
料であればとくに限定されるものではないが、例えば、
ポリエステル、ポリエチレンなどを好適なものとしてあ
げることができる。As shown in FIG. 1, the sealing material 19 for an air battery of the present invention is provided.
Is a base material 19b and an adhesive layer 19 formed on the base material 19b.
Consists of b. The constituent material of the base material 19b is not particularly limited as long as it is a gas impermeable material, for example,
Suitable examples include polyester, polyethylene and the like.
一方、接着剤層19aとしては、シス−1,4−ポリイソプ
レンを主成分とする天然ゴムまたは合成天然ゴムを主剤
とするものを使用する必要がある。具体的には、ヘビヤ
ゴムやグッタペルカなどシス−1,4−ポリイソプレンを
主成分とする天然ゴムまたは天然合計ゴムに溶剤として
アセトン、トルエン、ケトンを用い松脂、エステルガム
などの分散剤を配合してなるものが好適である。なお天
然合成ゴムはシス−1,4−ポリイソプレンが主成分で天
然ゴムと同じであが、クアネシルピロリン酸、イソペン
テルピロリン酸から合成されたものである。On the other hand, it is necessary to use, as the adhesive layer 19a, a material mainly composed of natural rubber or synthetic natural rubber containing cis-1,4-polyisoprene as a main component. Specifically, dispersants such as rosin, ester gum and the like are mixed with natural rubber or natural total rubber containing cis-1,4-polyisoprene as a main component such as heavy rubber or gutta percha using acetone, toluene and ketone as a solvent. Are preferred. Natural synthetic rubber contains cis-1,4-polyisoprene as a main component and is the same as natural rubber, but is synthesized from quanesyl pyrophosphate and isopenterpyrophosphate.
また、加熱接着する場合には、シス−1,4−ポリイソ
プレンに未加硫ゴムのシリコンゴムやクロロプレンゴム
を少量加えてもよい。かかる接着剤において、天然ゴム
の配合量は、10〜20重量％程度であることが好ましい。
天然ゴム系接着剤は、充分な接着力を有することは言う
までもなく、高温下においても、例えば水分と反応して
腐食することがないため、空気電池用密封剤の接着剤と
して極めて有用である。In the case of heat bonding, a small amount of unvulcanized silicone rubber or chloroprene rubber may be added to cis-1,4-polyisoprene. In such an adhesive, the compounding amount of the natural rubber is preferably about 10 to 20% by weight.
Natural rubber-based adhesives, of course, have a sufficient adhesive strength and do not corrode, for example, by reacting with moisture even at high temperatures, and are therefore extremely useful as adhesives for air battery sealants.
また、各層の厚さはとくに限定されないが、接着剤層
19aは10〜20μｍ程度が好ましく、一方、基材は、例え
ばフィルム状とする場合は、40〜50μｍ程度に設定する
ことが好ましい。The thickness of each layer is not particularly limited, but the adhesive layer
19a is preferably about 10 to 20 μm, while the base material is preferably set to about 40 to 50 μm in the case of, for example, a film.
かかる本発明の密封材は、例えば次にようにして製造
される。すなわち、まず、所定の厚さの基材フィルムを
作製し、ついで、該フィルム上に前述の接着剤層を、積
層成形法（ラミネーション）等を適用して形成する。し
かるのち、空気電池の寸法・形状に合わせて、該積層体
を所定形状に切断すればよい。Such a sealing material of the present invention is manufactured, for example, as follows. That is, first, a base film having a predetermined thickness is prepared, and then the above-mentioned adhesive layer is formed on the film by applying a lamination molding method (lamination) or the like. Thereafter, the laminate may be cut into a predetermined shape according to the size and shape of the air battery.
［実施例］ （１）空気電池用密封材の製造 厚さ約50μｍのポリエチレンフィルム上に、積層成形
法を適用して厚さ約20μｍの接着剤層を形成したのち、
該積層体を直径10mmの円形に切断し空気電池用密封材を
得た。なお、接着剤層には、天然ゴムにアセトンを配合
したもの（天然ゴム15重量％）を使用した。[Examples] (1) Production of sealing material for air battery An adhesive layer having a thickness of about 20 µm was formed on a polyethylene film having a thickness of about 50 µm by applying a lamination molding method.
The laminate was cut into a circle having a diameter of 10 mm to obtain a sealing material for an air battery. The adhesive layer used was a mixture of natural rubber and acetone (15% by weight of natural rubber).
（２）評価試験 上記により得られた密封材を使用して第２図に示した
如きPR44型空気電池を空気供給孔を閉塞し、60℃、空気
中で40日間貯蔵での貯蔵漏液特性を調べた。すなわち、
この空気電池20個を上記条件下で貯蔵し、10日毎に漏液
発生個数を調べ、結果を表に示した。(2) Evaluation test Using the sealing material obtained as described above, the storage leak characteristics of the PR44 type air battery as shown in FIG. 2 when the air supply hole is closed and the storage is stored in air at 60 ° C. for 40 days. Was examined. That is,
Twenty air batteries were stored under the above conditions, and the number of leaks was checked every 10 days. The results are shown in the table.
なお、比較のために、従来の密封材、すなわち、基材
としてポリプロピレンフィルム、接着剤としてアクリル
系接着剤を使用したものを用いて、同様に貯蔵漏液特性
を調べた結果を表中に併記した。For comparison, a conventional sealing material, that is, a polypropylene film as a base material, and an acrylic adhesive as an adhesive were used, and the results of storage leakage characteristics were similarly examined in the table. did.
さらに、本発明の密封材を粘着せしめた空気電池につ
いて貯蔵40日後に密封材を剥離して、放電容量を測定し
た。この密封材の剥離に際して、電池底面に接着材が残
留したものは皆無であった。そして、放電容量は60℃、
空気中で40日貯蔵後外部負荷を250Ωにしたとき、350mA
hr（平均値）であった。このことから電解液の腐食など
が全く生じていないことが確認された。 Further, with respect to the air cell to which the sealing material of the present invention was adhered, the sealing material was peeled off after 40 days of storage, and the discharge capacity was measured. When the sealing material was peeled off, no adhesive remained on the bottom surface of the battery. And the discharge capacity is 60 ° C,
350 mA when external load is set to 250Ω after storage in air for 40 days
hr (average). From this, it was confirmed that corrosion of the electrolytic solution and the like did not occur at all.
［発明の効果］ 以上の説明から明らかなように、本発明の空気電池用
密封材を使用して空気電池を密封した場合、とくに高温
下での電池貯蔵中に、漏液が発生することがほとんどな
く、しかも、電池の放電特性等も良好に維持することが
できることから、該密封材の密封機能が極めて高いこと
が確認された。また、本発明の密封材を空気電池から剥
離せしめた場合も、電池底面に接着剤が残留することが
全くないため、この工業的価値は大である。[Effects of the Invention] As is clear from the above description, when the air battery is sealed using the air battery sealing material of the present invention, liquid leakage may occur particularly during storage of the battery at a high temperature. It was confirmed that the sealing material had an extremely high sealing function because it had almost no discharge characteristics and good discharge characteristics of the battery. In addition, even when the sealing material of the present invention is peeled off from the air battery, there is no adhesive remaining on the bottom surface of the battery, so this industrial value is great.
第１図は本発明の空気電池用密封材の層構成を示す断面
図、第２図は密封材が貼着されたボタン型空気電池の一
般的構造を示す縦断面図でる。 １……正極缶、 1a……底面、 ２……空気供給孔、 9,19……空気電池用密封材、 9a,19a……接着剤層、 9b,19b……基材。FIG. 1 is a sectional view showing a layer structure of a sealing material for an air battery of the present invention, and FIG. 2 is a longitudinal sectional view showing a general structure of a button-type air battery to which the sealing material is adhered. DESCRIPTION OF SYMBOLS 1 ... Positive electrode can, 1a ... Bottom, 2 ... Air supply hole, 9, 19 ... Sealing material for air batteries, 9a, 19a ... Adhesive layer, 9b, 19b ... Base material.
Claims (3)
たはポリエチレンよりなる基材と、該基材上に形成され
たシス−1,4−ポリイソプレンを主剤とする接着剤層と
からなることを特徴とする空気電池用密封材。1. A method comprising: a base made of polyester or polyethylene as a gas-impermeable material; and an adhesive layer mainly formed of cis-1,4-polyisoprene formed on the base. Sealing material for air batteries.
然ゴムまたは合成天然ゴムからなる特許請求の範囲第１
項記載の空気電池用密封材。2. The method according to claim 1, wherein said cis-1,4-polyisoprene comprises natural rubber or synthetic natural rubber.
Item 7. A sealing material for an air battery according to Item 1.
特許請求の範囲第２項記載の空気電池用密封材。3. The sealing material for an air battery according to claim 2, wherein said adhesive layer has a thickness of 10 to 20 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62055368A JP2585250B2 (en) | 1987-03-12 | 1987-03-12 | Sealant for air battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62055368A JP2585250B2 (en) | 1987-03-12 | 1987-03-12 | Sealant for air battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63224161A JPS63224161A (en) | 1988-09-19 |
| JP2585250B2 true JP2585250B2 (en) | 1997-02-26 |
Family
ID=12996541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62055368A Expired - Fee Related JP2585250B2 (en) | 1987-03-12 | 1987-03-12 | Sealant for air battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2585250B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69216217T2 (en) * | 1991-08-09 | 1997-04-24 | Yuasa Battery Co Ltd | FLAT BATTERY |
| US6329095B1 (en) * | 2000-10-19 | 2001-12-11 | The Gillette Company | Tab for zinc/air cell |
| US7405014B2 (en) | 2003-12-22 | 2008-07-29 | Eveready Battery Company, Inc. | Tab system for a metal-air electrochemical cell |
| US11266525B2 (en) | 2016-01-21 | 2022-03-08 | Xodus Medical, Inc. | Patient warming device for surgical procedures |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57158966A (en) * | 1981-03-25 | 1982-09-30 | Matsushita Electric Ind Co Ltd | Button-type air-zinc battery |
| JPS58174871U (en) * | 1982-05-17 | 1983-11-22 | 松下電器産業株式会社 | Button air battery |
-
1987
- 1987-03-12 JP JP62055368A patent/JP2585250B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63224161A (en) | 1988-09-19 |
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