JP2009087948A - Coating separator, its manufacturing method, and electric/electronic parts using it - Google Patents
Coating separator, its manufacturing method, and electric/electronic parts using it Download PDFInfo
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- JP2009087948A JP2009087948A JP2008310791A JP2008310791A JP2009087948A JP 2009087948 A JP2009087948 A JP 2009087948A JP 2008310791 A JP2008310791 A JP 2008310791A JP 2008310791 A JP2008310791 A JP 2008310791A JP 2009087948 A JP2009087948 A JP 2009087948A
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- separator
- anhydrous
- sodium
- sulfate
- hydroxyl group
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- 238000000576 coating method Methods 0.000 title claims abstract description 14
- 239000011248 coating agent Substances 0.000 title claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 title description 5
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 11
- 150000003377 silicon compounds Chemical class 0.000 claims abstract description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 9
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 6
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims abstract description 6
- 229910000365 copper sulfate Inorganic materials 0.000 claims abstract description 6
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims abstract description 6
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 claims abstract description 6
- 239000004760 aramid Substances 0.000 claims abstract description 4
- 229920003235 aromatic polyamide Polymers 0.000 claims abstract description 4
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims abstract description 3
- 229910021536 Zeolite Inorganic materials 0.000 claims abstract description 3
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims abstract description 3
- 150000001298 alcohols Chemical class 0.000 claims abstract description 3
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims abstract description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 3
- 239000001110 calcium chloride Substances 0.000 claims abstract description 3
- 229910001628 calcium chloride Inorganic materials 0.000 claims abstract description 3
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000000292 calcium oxide Substances 0.000 claims abstract description 3
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000001768 carboxy methyl cellulose Substances 0.000 claims abstract description 3
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 claims abstract description 3
- 150000004676 glycans Chemical class 0.000 claims abstract description 3
- 150000002334 glycols Chemical class 0.000 claims abstract description 3
- 229920001282 polysaccharide Polymers 0.000 claims abstract description 3
- 239000005017 polysaccharide Substances 0.000 claims abstract description 3
- 239000000741 silica gel Substances 0.000 claims abstract description 3
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 3
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 3
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 claims abstract description 3
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 claims abstract description 3
- 229910052938 sodium sulfate Inorganic materials 0.000 claims abstract description 3
- 235000011152 sodium sulphate Nutrition 0.000 claims abstract description 3
- 235000010265 sodium sulphite Nutrition 0.000 claims abstract description 3
- 239000010457 zeolite Substances 0.000 claims abstract description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract 4
- 239000011780 sodium chloride Substances 0.000 claims abstract 2
- 239000000126 substance Substances 0.000 claims description 22
- 239000007788 liquid Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 abstract description 11
- 239000008151 electrolyte solution Substances 0.000 abstract description 9
- 239000000243 solution Substances 0.000 abstract description 4
- 230000014759 maintenance of location Effects 0.000 description 11
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 10
- 239000000835 fiber Substances 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- -1 polypropylene Polymers 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 4
- 239000003792 electrolyte Substances 0.000 description 4
- 239000004745 nonwoven fabric Substances 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 238000003490 calendering Methods 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 239000004734 Polyphenylene sulfide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- XIUMQSREFXCDGE-UHFFFAOYSA-L S(=O)(=O)([O-])O.[Na+].[Cl-].[Na+] Chemical compound S(=O)(=O)([O-])O.[Na+].[Cl-].[Na+] XIUMQSREFXCDGE-UHFFFAOYSA-L 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000012716 precipitator Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- 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
Abstract
Description
本発明はコーティングセパレータ、その製造方法およびそれを用いた電気電子部品に関する。 The present invention relates to a coating separator, a method for producing the same, and an electric / electronic component using the same.
携帯通信機器や高速情報処理機器等の最近の進歩に象徴されるように、エレクトロニクス機器の小型軽量化、高性能化には目覚しいものがある。これらを支える要素技術の一つに、電気・電子部品の高性能化が挙げられる。電池等も例外ではなく、高性能部品開発が急速に進展している。これに応えるため、部材、例えば隔壁材料としてのセパレータに関しても技術・品質開発の必要性が高まっている。 As symbolized by recent advances in portable communication devices, high-speed information processing devices, etc., there are remarkable things in reducing the size and weight of electronic devices and improving their performance. One of the elemental technologies that support these is the high performance of electrical and electronic components. Batteries are no exception, and high-performance component development is progressing rapidly. In order to meet this demand, there is an increasing need for technical and quality development of members, for example, separators as partition wall materials.
例えば、アルカリ電池の１つの態様として円筒型のものが知られており、この円筒型アルカリ電池は極板群にセパレータを巻回して製造されるが、電池容量を増やすため或いは電気抵抗を小さくするために、セパレータとして使用する不織布は電解液の保持性に優れている必要がある。そのため、セパレータはできるだけ繊維径の小さい繊維から構成されているのが好ましい。このような不織布を製造する方法として、例えば、ポリオレフィン系樹脂からなる水流により分割可能な分割性繊維を含む繊維ウェブに対して水流を噴出し、分割性繊維を分割することにより繊維径の小さい繊維を発生させる方法が知られているが、この方法には、分割性繊維を十分に分割することができなかったり、十分に分割するためには多大なエネルギーが必要である等の問題がある。 For example, a cylindrical type battery is known as one aspect of the alkaline battery, and this cylindrical alkaline battery is manufactured by winding a separator around an electrode plate group, but in order to increase the battery capacity or reduce the electric resistance. Therefore, the nonwoven fabric used as a separator needs to be excellent in the retention property of electrolyte solution. Therefore, it is preferable that the separator is composed of fibers having a fiber diameter as small as possible. As a method for producing such a nonwoven fabric, for example, a fiber having a small fiber diameter is formed by ejecting a water stream to a fiber web containing a splittable fiber that can be split by a water stream made of a polyolefin-based resin and splitting the splittable fiber However, this method has problems such that the splittable fiber cannot be sufficiently divided or a large amount of energy is required for sufficient division.
本発明の目的は上記の如き問題点を解決すること、すなわち、十分な電解液の保持性を有するセパレータを提供することである。 An object of the present invention is to solve the above-mentioned problems, that is, to provide a separator having sufficient electrolyte retention.
本発明者らはかかる状況に鑑み、高度な電解液保持性を有するセパレータを開発すべく鋭意検討を重ねた結果、本発明を完成するに至った。 In view of such a situation, the present inventors have intensively studied to develop a separator having a high electrolytic solution retention property, and as a result, the present invention has been completed.
かくして、本発明は、イオン性物質、水酸基含有物質及びシリコン化合物より選ばれる少なくとも１種の物質がコーティングされていることを特徴とする電気電子部品用セパレータを提供するものである。 Thus, the present invention provides a separator for electrical and electronic parts, which is coated with at least one substance selected from an ionic substance, a hydroxyl group-containing substance and a silicon compound.
本発明はまた、イオン性物質、水酸基含有物質及びシリコン化合物より選ばれる少なくとも１種の物質を予め水に溶解または分散させた後、その溶解または分散液に未コーティングセパレータを浸漬し、次いで乾燥して水分を蒸発させることを特徴とする上記の本発明のセパレータの製造方法を提供するものである。 In the present invention, at least one substance selected from an ionic substance, a hydroxyl group-containing substance and a silicon compound is previously dissolved or dispersed in water, and then an uncoated separator is immersed in the dissolved or dispersed liquid, and then dried. Accordingly, the present invention provides a method for producing the separator of the present invention, wherein the water is evaporated.
本発明はさらに、上記の本発明のセパレータが使用されていることを特徴とする、電池、コンデンサなどの電気電子部品を提供するものである。 The present invention further provides electrical and electronic parts such as batteries and capacitors, characterized in that the separator of the present invention is used.
以下、本発明のコンデンサ、その製造方法及び用途についてさらに詳細に説明する。 Hereinafter, the capacitor of the present invention, its manufacturing method and application will be described in more detail.
（セパレータ）
本発明において「セパレータ」は、電池、コンデンサなどの電気電子部品中で例えば電極などの導電部材間を隔離することにより回路が短絡することを防ぐための構造体と定義される。セパレータとしては、通常、紙、不織布、微多孔フィルムまたはこれらの複合体が使用されるが、これらに限定されるものではない。
(Separator)
In the present invention, the “separator” is defined as a structure for preventing a circuit from being short-circuited by isolating conductive members such as electrodes in electric and electronic parts such as batteries and capacitors. As the separator, paper, non-woven fabric, microporous film or a composite thereof is usually used, but is not limited thereto.
また、セパレータを構成する素材としては、例えば、アラミド、ポリエステル、ポリプロピレン、ポリエチレン、ポリフェニレンサルファイド、フッ素樹脂、ポリビニルアルコール、ＰＢＯ（ポリパラフェニレンベンゾビスオキサゾール）、ポリイミド、ガラス、カーボン、アルミナ、天然繊維、天然パルプなどが、紙、不織布、微多孔フィルムなどに加工しやすいことから使用される場合が多いが、電気電子部品中の電極などと比較して抵抗値の高いものであれば、材質は特に制限されるものではない。 Examples of the material constituting the separator include aramid, polyester, polypropylene, polyethylene, polyphenylene sulfide, fluororesin, polyvinyl alcohol, PBO (polyparaphenylene benzobisoxazole), polyimide, glass, carbon, alumina, natural fiber, Natural pulp is often used because it is easy to process into paper, non-woven fabric, microporous film, etc., but if the resistance value is high compared to the electrode in electrical and electronic parts, the material is especially It is not limited.
（コーティングセパレータ）
本発明において「コーティングセパレータ」とは、その表面にイオン性物質、水酸基含有物質及びシリコン化合物より選ばれる少なくとも１種の物質が付着したセパレータである。その付着量はセパレータの孔が実質的に塞がらない限り特に制限されるものではないが、一般には、未コーティングセパレータの重量に対して０.００４〜２０％の範囲内が好ましい。また、コーティングは均一であることが望ましいが、コーティング斑があってもセパレータとして機能する限り問題はない。
(Coating separator)
In the present invention, the “coating separator” is a separator in which at least one substance selected from an ionic substance, a hydroxyl group-containing substance and a silicon compound is attached to the surface. The amount of adhesion is not particularly limited as long as the pores of the separator are not substantially blocked, but generally it is preferably in the range of 0.004 to 20% with respect to the weight of the uncoated separator. Moreover, it is desirable that the coating is uniform, but there is no problem as long as it functions as a separator even if there are coating spots.
コーティング方法としては、例えば上記物質を水に溶解または分散させた後、その溶解液または分散液にセパレータを浸漬し、次いで乾燥により水分を蒸発させる方法、または浸漬する前に未コーティングセパレータを予め部品中に組み込み、その全体を溶解液または分散液に浸漬し、次いで乾燥して水分を蒸発させる方法などが好適なものとして挙げられるが、これらに限定されるものではない。上記の乾燥の条件は特に制限されるものではないが、通常、５０℃以上で１分以上乾燥することが好ましい。 As a coating method, for example, the above substances are dissolved or dispersed in water, and then the separator is immersed in the solution or dispersion, and then the moisture is evaporated by drying. Examples of suitable methods include, but are not limited to, a method in which the whole is immersed in a solution or dispersion and then dried to evaporate water. The drying conditions are not particularly limited, but it is usually preferable to dry at 50 ° C. or higher for 1 minute or longer.
また、上記「部品」とは、電池、コンデンサ等の電気電子部品のことであり、上記溶解液が浸漬可能な空間が存在する限り、特に完成品、半完成品を問わない。 The “component” is an electric / electronic component such as a battery or a capacitor, and is not particularly limited to a finished product or a semi-finished product as long as there is a space in which the solution can be immersed.
（イオン性物質）
本発明に用いられる「イオン性物質」とは、化合物を構成する化学結合にイオン結合を含むものであり、具体的には、例えば、炭酸カルシウム、塩化カルシウム、無水塩化カルシウム、酸化カルシウム、塩化ナトリウム、硫酸ナトリウム、無水硫酸ナトリウム、亜硫酸ナトリム、硫酸銅、無水硫酸銅、硫酸アルミニウム、カルボキシメチルセルロースナトリウムなどがあげあれるが、これらに限定されるものではない。
(Ionic substance)
The “ionic substance” used in the present invention includes an ionic bond in the chemical bond constituting the compound. Specifically, for example, calcium carbonate, calcium chloride, anhydrous calcium chloride, calcium oxide, sodium chloride Sodium sulfate, anhydrous sodium sulfate, sodium sulfite, copper sulfate, anhydrous copper sulfate, aluminum sulfate, sodium carboxymethyl cellulose, and the like, but are not limited thereto.
（水酸基含有物質）
本発明に用いられる「水酸基含有物質」とは、化合物中に水酸基（−ＯＨ）を含むものであり、具体的には、アルコール類（例えば、エタノール、ブタノールなど）、グリコール類（例えば、エチレングリコール、プロピレングリコールなど）、多糖類（例えば、セルロース、デンプンなど）などがあげあれるが、これらに限定されるものではない。
(Hydroxyl-containing substance)
The “hydroxyl group-containing substance” used in the present invention includes a hydroxyl group (—OH) in a compound. Specifically, alcohols (eg, ethanol, butanol, etc.), glycols (eg, ethylene glycol) , Propylene glycol, etc.) and polysaccharides (eg, cellulose, starch, etc.), but are not limited thereto.
（シリコン化合物）
本発明に用いられる「シリコン化合物」とは、化合物中にケイ素を含むものであり、例えば、シリカゲル、シリカゾル、無水シリカ、ゼオライトなどがあげあれるが、これらに限定されるものではない。
(Silicon compound)
The “silicon compound” used in the present invention includes silicon in the compound, and examples thereof include silica gel, silica sol, anhydrous silica, zeolite and the like, but are not limited thereto.
（熱処理）
本発明では、場合により、コーテイング前および／または後にセパレータを熱処理し、
電解液の保持性をさらに高めることができる。特に、コーティング後に熱処理を行うことにより、イオン性物質、水酸基含有物質、シリコン化合物等がセパレータに固定され、電解液保持性が向上する可能性がある。その際の熱処理温度は厳密に制限されるものではないが、一般には、セパレータ構成素材の融点以下であることが好ましい。
(Heat treatment)
In the present invention, the separator is optionally heat-treated before and / or after coating,
The retainability of the electrolytic solution can be further enhanced. In particular, by performing a heat treatment after coating, an ionic substance, a hydroxyl group-containing substance, a silicon compound, and the like are fixed to the separator, and the electrolyte retention may be improved. In this case, the heat treatment temperature is not strictly limited, but in general, it is preferably below the melting point of the separator constituting material.
（電解液保持性）
本発明において「電解液保持性」とは、セパレータが一定時間に電解液などの液体を吸上げる度合であり、具体的には下記式（２）により算出される値として定義される。
ｈ2η／γｔ 式（２）
ここで、ｈはある液体をｔ秒間に吸上げる吸上げ高さ（ｍｍ）であり、ηは該液体の
粘度（ｍＰａＳ）であり、γは該液体の表面張力（ｍＮ/ｍ）であり、ｔは吸上げ時
間（秒）である。
(Electrolytic solution retention)
In the present invention, “electrolytic solution retention” is the degree to which the separator absorbs liquid such as electrolytic solution for a certain time, and is specifically defined as a value calculated by the following formula (2).
h 2 η / γt equation (2)
Here, h is a suction height (mm) for sucking up a liquid in t seconds, η is a viscosity (mPaS) of the liquid, γ is a surface tension (mN / m) of the liquid, t is the suction time (seconds).
本発明のコーティングされたセパレータは、上記式（２）で示される電解液保持性が一般に０.７より大きい。 The coated separator of the present invention generally has an electrolytic solution retention of formula (2) above 0.7.
以上の如くしてコーティングされた本発明のセパレータは、コーティングによる電解液保持性に優れており、電気電子部品の導電部材間の隔離板として極めて適している。 The separator of the present invention coated as described above is excellent in electrolytic solution retention by coating, and is extremely suitable as a separator between conductive members of electrical and electronic parts.
以下、本発明を実施例、比較例によりさらに具体的に説明する。 Hereinafter, the present invention will be described more specifically with reference to Examples and Comparative Examples.
（測定方法）
（１）シートの坪量、厚みの測定
ＪＩＳ Ｃ２１１１に準じて実施した。
（２）吸上げ高さの測定
正ブタノールを３０秒間に吸上げる高さを測定した。
２０℃で正ブタノールの粘度は７（ｍＰａＳ）、表面張力は２４.６（ｍＮ/ｍ）
であった。
(Measuring method)
(1) Measurement of basis weight and thickness of sheet The measurement was performed according to JIS C2111.
(2) Measurement of sucking height The height of sucking up positive butanol in 30 seconds was measured.
At 20 ° C, the viscosity of positive butanol is 7 (mPaS) and the surface tension is 24.6 (mN / m).
Met.
実施例１
特公昭５２−１５１６２４号公報に記載の湿式沈殿機を用いてポリメタフェニレンイソフタルアミドのファイブリッドを製造した。これを叩解機で処理して濾水度（カナダ標準濾水度）を２０ｍｌに調節した。
Example 1
A polymetaphenylene isophthalamide fibrid was produced using a wet precipitator described in Japanese Patent Publication No. 52-151624. This was treated with a beater to adjust the freeness (Canadian standard freeness) to 20 ml.
また、帝人（株）製コーネックス（登録商標）を長さ５ｍｍに切断して抄紙原料（アラミドフロック）とした。このフロックの繊度は０.８デニールであった。 Further, Cornex (registered trademark) manufactured by Teijin Limited was cut into a length of 5 mm to obtain a papermaking raw material (aramid floc). The fineness of this floc was 0.8 denier.
上記のように調製した紙料を水中にて混合し、タッピ式手抄き機（断面６２５ｃｍ2）でシートを作製した。 The stock prepared as described above was mixed in water, and a sheet was prepared with a tappi-type hand machine (cross section 625 cm 2 ).
上記シートをカレンダー加工機にてロール温度３３０℃、ロール線圧１００ｋｇｆ／ｃｍ、速度２ｍ／分の条件でカレンダー加工した。 The sheet was calendered with a calendering machine under conditions of a roll temperature of 330 ° C., a roll linear pressure of 100 kgf / cm, and a speed of 2 m / min.
カレンダー加工後のシートを０．２５％硫酸ナトリウム水溶液に１分含浸後、熱風オーブンにて１５０℃×３０分乾燥した。 The calendered sheet was impregnated with a 0.25% sodium sulfate aqueous solution for 1 minute and then dried in a hot air oven at 150 ° C. for 30 minutes.
得られたシート材の主要特性及びブタノール吸上げ高さを測定した。結果を下記表１に示す。 The main characteristics and butanol wicking height of the obtained sheet material were measured. The results are shown in Table 1 below.
比較例１
上記実施例１と同様にしてカレンダー加工まで行った後、純水に１分含浸後、熱風オーブンにて１５０℃×３０分乾燥した。
Comparative Example 1
After carrying out to calendar processing like the said Example 1, after impregnating with pure water for 1 minute, it dried at 150 degreeC * 30 minute (s) in the hot air oven.
得られたシート材の主要特性及びブタノール吸上げ高さを測定した。結果を下記表１に示す。 The main characteristics and butanol wicking height of the obtained sheet material were measured. The results are shown in Table 1 below.
上記表１から明らかなとおり、セパレータに本発明に従いコーティングを施すことにより液保持性が向上する。 As apparent from Table 1 above, the liquid retention is improved by coating the separator according to the present invention.
以上説明したように、本発明に従いコーティングされたセパレータは電解液の保持性が向上する。また、本発明のコーティングセパレーダを電気電子部品に使用することにより、本来その部品が持つ電気特性が電解液の不十分な保持、漏れ等によるロスなく発揮させることができると期待される。 As described above, the separator coated according to the present invention has improved electrolyte retention. In addition, by using the coating separator radar of the present invention for electrical and electronic parts, it is expected that the electrical characteristics inherent to the parts can be exhibited without loss due to insufficient retention or leakage of the electrolyte.
Claims (6)
０.７＜ｈ２η／γｔ 式（１）
ここで、ｈはある液体をｔ秒間に吸上げる吸上げ高さ（ｍｍ）であり、ηは該液体の
粘度（ｍＰａＳ）であり、γは該液体の表面張力（ｍＮ/ｍ）であり、ｔは吸上げ時
間（秒）である。
で示される範囲内の吸上げ高さを有することを特徴とする請求項１〜５のいずれかに記載のセパレータ。 The following inequality (1)
0.7 <h 2 η / γt Equation (1)
Here, h is a suction height (mm) for sucking up a liquid in t seconds, η is a viscosity (mPaS) of the liquid, γ is a surface tension (mN / m) of the liquid, t is the suction time (seconds).
The separator according to any one of claims 1 to 5, wherein the separator has a suction height within a range indicated by.
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| JP2002189696A Division JP4287622B2 (en) | 2002-06-28 | 2002-06-28 | COATING SEPARATOR, MANUFACTURING METHOD THEREOF, AND ELECTRIC AND ELECTRONIC COMPONENT USING THE SAME |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2012057790A1 (en) * | 2010-10-29 | 2012-05-03 | Hewlett-Packard Development Company, L.P. | Paper enhancement treatment with decreased calcium chloride |
| KR20150050511A (en) * | 2013-10-31 | 2015-05-08 | 주식회사 엘지화학 | A method of manufacturing separator for electrochemical device and separator for electrochemical device manufactured thereby |
| US9083035B2 (en) | 2012-03-22 | 2015-07-14 | Samsung Sdi Co., Ltd. | Separator and rechargeable lithium battery |
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