JP2001040597A - Hydrophilic nonwoven fabric, battery separator and battery - Google Patents
Hydrophilic nonwoven fabric, battery separator and batteryInfo
- Publication number
- JP2001040597A JP2001040597A JP11207500A JP20750099A JP2001040597A JP 2001040597 A JP2001040597 A JP 2001040597A JP 11207500 A JP11207500 A JP 11207500A JP 20750099 A JP20750099 A JP 20750099A JP 2001040597 A JP2001040597 A JP 2001040597A
- Authority
- JP
- Japan
- Prior art keywords
- nonwoven fabric
- battery
- fiber
- hydrophilic nonwoven
- hydrophilic
- 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
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
Landscapes
- Paper (AREA)
- Cell Separators (AREA)
- Secondary Cells (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ニッケルカドミウ
ム電池やニッケル水素電池などのアルカリ電池に好適に
用いられる親水性不織布、電池用セパレーター材および
その電池用セパレーター材を用いてなる電池に関するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hydrophilic nonwoven fabric, a battery separator, and a battery using the battery separator, which are preferably used for alkaline batteries such as nickel cadmium batteries and nickel hydrogen batteries. .
【０００２】[0002]
【従来の技術】電池用セパレーター材に求められる機能
は、正負極間の隔離および電解液の保持であるが、アル
カリ電池においては、電解液として３０重量％程度の濃
厚な水酸化カリウム水溶液が使用されていることから、
電池用セパレーター材としては耐アルカリ性に優れた材
質のものが求められる。また、電池の生産性の点から電
解液の吸液速度が高く、しかも機械的強度に優れた電池
用セパレーター材が求められる。2. Description of the Related Art The functions required of a battery separator material are the separation between positive and negative electrodes and the retention of an electrolytic solution. In an alkaline battery, a concentrated potassium hydroxide aqueous solution of about 30% by weight is used as the electrolytic solution. It has been
As a battery separator material, a material having excellent alkali resistance is required. Further, from the viewpoint of battery productivity, there is a demand for a battery separator material having a high electrolyte absorption rate and excellent mechanical strength.
【０００３】従来、ニッケルカドミウム電池やニッケル
水素電池などのアルカリ電池用セパレーター材として
は、ポリアミド系繊維からなる不織布が広く用いられて
いるが、これはポリアミド系繊維からなる不織布が親水
性を有し、電池用セパレーター材として必要な電解液の
保持性に優れているためである。しかしながら、かかる
ポリアミド系繊維は、充電時に正極から発生する酸素ガ
スにより酸化され、分解による生成物が電池の正負極間
で酸化還元を繰り返し、電池の自己放電を増加させると
いう問題があった。Conventionally, nonwoven fabrics made of polyamide fibers have been widely used as separator materials for alkaline batteries such as nickel cadmium batteries and nickel-metal hydride batteries. Nonwoven fabrics made of polyamide fibers have hydrophilic properties. This is because it has excellent retention of an electrolyte solution required as a battery separator material. However, such a polyamide fiber has a problem in that it is oxidized by oxygen gas generated from a positive electrode during charging, and a product of decomposition repeatedly repeats oxidation-reduction between the positive and negative electrodes of the battery, thereby increasing the self-discharge of the battery.
【０００４】このため、特開平１０−６４５０２号公報
では、電池セパレーターとして酸化されにくい素材であ
るポリフェニレンサルファイド繊維からなる湿式不織布
が提案されているが、ポリフェニレンサルファイド繊維
からなる湿式不織布は、電解液の吸液速度が低いため
に、プラズマ処理などの親水化処理を施す必要があっ
た。For this reason, Japanese Unexamined Patent Publication No. Hei 10-64502 proposes a wet nonwoven fabric made of polyphenylene sulfide fiber, which is a hardly oxidizable material, as a battery separator. However, a wet nonwoven fabric made of polyphenylene sulfide fiber is made of an electrolytic solution. Due to the low liquid absorption rate, it was necessary to perform a hydrophilic treatment such as a plasma treatment.
【０００５】[0005]
【発明が解決しようとする課題】このように従来の技術
では不織布にプラズマ処理などの後加工を施すために、
コストが高く、また後加工時に繊維の劣化を引き起こ
し、湿式不織布の強度が低下するなどの欠点があった。As described above, in the prior art, the non-woven fabric is subjected to post-processing such as plasma treatment.
There are drawbacks such as high cost, deterioration of fibers during post-processing, and reduction in the strength of the wet nonwoven fabric.
【０００６】そこで本発明の目的は、不織布にプラズマ
加工などの後加工を施すことなく、親水性を付与でき、
さらにはその不織布を電池セパレーター材として使用し
た際に電解液の吸液速度に優れた親水性不織布、および
その電池セパレーター材を用いてなる電池を提供するこ
とにある。Therefore, an object of the present invention is to provide hydrophilicity without subjecting a nonwoven fabric to post-processing such as plasma processing.
It is still another object of the present invention to provide a hydrophilic nonwoven fabric having an excellent electrolyte absorption rate when the nonwoven fabric is used as a battery separator material, and a battery using the battery separator material.
【０００７】[0007]
【課題を解決するための手段】本発明は、かかる課題を
解決するために次のような手段を採用する。すなわち、
本発明の親水性不織布は、フィブリル化したパルプ状の
アラミド繊維とポリフェニレンサルファイド繊維とを含
み、フィブリル化したパルプ状のアラミド繊維の含有量
が１０〜９０重量％であることを特徴とするものであ
り、本発明の親水性不織布においては、ＪＩＳ Ｌ−１
０９６に規定されたバイレック法に準じて測定した３０
重量％水酸化カリウム水溶液の吸液速度が１０ｍｍ／３
０ｍｉｎ以上であり、またフィブリル化したパルプ状の
アラミド繊維の濾水度が９００ｍｌ以下であることが好
ましい。The present invention employs the following means to solve the above-mentioned problems. That is,
The hydrophilic nonwoven fabric of the present invention comprises a fibrillated pulp-like aramid fiber and a polyphenylene sulfide fiber, wherein the content of the fibrillated pulp-like aramid fiber is 10 to 90% by weight. Yes, in the hydrophilic nonwoven fabric of the present invention, JIS L-1
30 measured according to the Bilek method specified in
The absorption rate of a 10% by weight aqueous solution of potassium hydroxide is 10 mm / 3
It is preferably 0 min or more, and the freeness of the fibrillated pulp-like aramid fiber is preferably 900 ml or less.
【０００８】この親水性不織布は電池セパレーター材と
して好適である。また、本発明の電池は、かかる親水性
不織布からなる電池セパレーター材で構成されているこ
とを特徴とするものである。This hydrophilic nonwoven fabric is suitable as a battery separator material. Further, the battery of the present invention is characterized by being constituted by a battery separator material made of such a hydrophilic nonwoven fabric.
【０００９】[0009]
【発明の実施の形態】本発明者等は、親水性の良好なフ
ィブリル化したパルプ状のアラミド繊維をポリフェニレ
ンサルファイド繊維に混ぜて不織布とすることにより、
ポリフェニレンサルファイド繊維のみで作った不織布に
比較して、吸液速度が大幅に向上することを見いだし、
本発明に到達したものである。BEST MODE FOR CARRYING OUT THE INVENTION The present inventors mixed non-woven fabrics by mixing fibrillated pulp-like aramid fibers having good hydrophilicity with polyphenylene sulfide fibers.
Compared to a non-woven fabric made of only polyphenylene sulfide fiber, it was found that the liquid absorption rate was significantly improved,
The present invention has been reached.
【００１０】以下、本発明を具体的に説明する。Hereinafter, the present invention will be described specifically.
【００１１】本発明の親水性不織布は、親水性の良好な
フィブリル化したパルプ状のアラミド繊維とポリフェニ
レンサルファイド繊維とで基本的に構成されている。The hydrophilic nonwoven fabric of the present invention is basically composed of fibrillated pulp-like aramid fiber having good hydrophilicity and polyphenylene sulfide fiber.
【００１２】本発明では、フィブリル化したパルプ状の
アラミド繊維をポリフェニレンサルファイド繊維と混綿
して使用することが重要であり、アラミド繊維を、高圧
ホモジナイザーやリファイナーなどの機器を用いて十分
にフィブリル化させ、パルプ状にすることにより繊維間
の隙間が小さくなり、毛細管現象が促進され、吸液速度
を高めることができる。In the present invention, it is important to use the fibrillated pulp-like aramid fiber mixed with the polyphenylene sulfide fiber, and the aramid fiber is sufficiently fibrillated using equipment such as a high-pressure homogenizer or a refiner. By making the pulp, the gap between the fibers becomes small, the capillary phenomenon is promoted, and the liquid absorbing speed can be increased.
【００１３】本発明で使用されるフィブリル化したパル
プ状のアラミド繊維とは、ＪＩＳＰ−８１２１（カナダ
標準形）に準じて測定した濾水度が９００ｍｌ以下とい
う十分にフィブリル化された親水性の良好な繊維であ
り、通常は繊維長１ｍｍ、１本あたり１〜７本程度のフ
ィブリルを有するものである。このとき濾水度が９００
ｍｌを超えるか、もしくはアラミド繊維がフィブリル化
されていなかった場合は、繊維間の隙間が大きくなり、
高い吸液速度が得られないので好ましくない。また、こ
のときのパルプの繊維長は、０．０５〜４ｍｍであるこ
とが好ましい。繊維長が０．０５ｍｍ未満の場合、繊維
間の絡合が不十分となり不織布の強力が低くなるので好
ましくない。また、繊維長が４ｍｍを超えると抄造時の
繊維の分散性が悪くなり、不織布に目付むらが生じるの
で好ましくない。さらに、繊維径は０．２〜１０μｍで
あることが高い吸液速度を得るために好ましい。The fibrillated pulp-like aramid fiber used in the present invention is a sufficiently fibrillated hydrophilic material having a freeness of 900 ml or less as measured according to JISP-8121 (Canadian standard type). The fibers usually have a fiber length of 1 mm and about 1 to 7 fibrils per fiber. At this time, the freeness is 900
ml or the aramid fiber is not fibrillated, the gap between the fibers increases,
It is not preferable because a high liquid absorption rate cannot be obtained. In addition, the fiber length of the pulp at this time is preferably 0.05 to 4 mm. When the fiber length is less than 0.05 mm, the entanglement between the fibers becomes insufficient and the strength of the nonwoven fabric is lowered, which is not preferable. On the other hand, if the fiber length exceeds 4 mm, the dispersibility of the fibers during papermaking deteriorates, and the nonwoven fabric becomes uneven in weight. Further, the fiber diameter is preferably 0.2 to 10 μm in order to obtain a high liquid absorption rate.
【００１４】本発明で用いられるフィブリル化したパル
プ状のアラミド繊維のフィブリル化前の単繊維繊度は、
好ましくは０．１〜１０デニールであり、パルプ状のア
ラミド繊維は、このような単繊維が枝分かれ状にフィブ
リル化されている。The monofilament fineness of the fibrillated pulp-like aramid fiber used in the present invention before fibrillation is as follows:
It is preferably 0.1 to 10 denier, and in the pulp-like aramid fiber, such a single fiber is fibrillated in a branched shape.
【００１５】本発明で用いられるアラミド繊維として
は、パラ系アラミド繊維やメタ系アラミド繊維を使用す
ることができるが、これらの中でもパラ系アラミド繊維
が親水性に優れた不織布を得るために好ましい。アラミ
ド繊維がメタ系アラミド繊維である場合、抄造後に熱プ
レス機、ヒートロールカレンダーなどを用い熱接着した
際にメタ系アラミド繊維自体が熱融着し、吸液に必要な
繊維間の隙間がなくなり、吸液速度が低下することがあ
る。As the aramid fibers used in the present invention, para-aramid fibers and meta-aramid fibers can be used. Among them, para-aramid fibers are preferred for obtaining a nonwoven fabric having excellent hydrophilicity. When the aramid fiber is a meta-aramid fiber, the meta-aramid fiber itself is heat-sealed when it is thermally bonded using a hot press, heat roll calender, etc. after papermaking, eliminating gaps between fibers required for liquid absorption. , The liquid absorption rate may be reduced.
【００１６】また、ここでいう親水性不織布とは、ＪＩ
Ｓ Ｌ−１０９６に規定されたバイレック法に準じて測
定した、水溶液の吸液速度、具体的には、３０重量％水
酸化カリウム水溶液の吸液速度が１０ｍｍ／３０ｍｉｎ
以上の不織布であり、より好ましい吸液速度は３０ｍｍ
／３０ｍｉｎ以上である。このように本発明で用いられ
る親水性不織布は、特別に親水性樹脂処理やプラズマ処
理などを施さなくても十分な親水性を有する不織布であ
ること意味するが、本発明では必要に応じさらにこれら
の親水化処理することを妨げるものではない。The term "hydrophilic nonwoven fabric" used herein refers to JI
The liquid absorption rate of an aqueous solution, specifically, the absorption rate of a 30% by weight aqueous potassium hydroxide solution, measured according to the BIREC method specified in SL-1096 is 10 mm / 30 min.
The above non-woven fabric, the more preferable liquid absorption rate is 30 mm
/ 30 min or more. As described above, the hydrophilic nonwoven fabric used in the present invention means a nonwoven fabric having sufficient hydrophilicity without being subjected to a special hydrophilic resin treatment or a plasma treatment. Does not hinder the hydrophilization treatment.
【００１７】本発明で用いられるアラミド繊維の含有量
は、１０重量％以上９０重量％以下であることが、親水
性に優れた不織布を得るために好ましい。アラミド繊維
の含有量が１０重量％未満である場合、吸液速度が低く
十分でなく、また、アラミド繊維の含有量が多すぎる
と、吸液速度は高いものの不織布自体の強度が低くなる
傾向があり好ましくない。その意味で、より好ましいア
ラミド繊維の含有量は、２０重量％以上５０重量％以下
である。The content of the aramid fiber used in the present invention is preferably from 10% by weight to 90% by weight in order to obtain a nonwoven fabric having excellent hydrophilicity. When the content of the aramid fiber is less than 10% by weight, the liquid absorption rate is low and not sufficient, and when the content of the aramid fiber is too large, the strength of the nonwoven fabric itself tends to be low although the liquid absorption rate is high. There is not preferred. In that sense, a more preferable content of the aramid fiber is 20% by weight or more and 50% by weight or less.
【００１８】また、本発明で用いられるポリフェニレン
サルファイド繊維とは、その構成単位の９０％以上が−
（Ｃ6Ｈ4−Ｓ）−で構成されるフェニレンサルファイド
構造単位を含有する重合体からなる繊維である。The polyphenylene sulfide fiber used in the present invention is such that 90% or more of its constituent units are-
It is a fiber made of a polymer containing a phenylene sulfide structural unit composed of (C 6 H 4 —S) —.
【００１９】本発明の親水性不織布においては、ポリフ
ェニレンサルファイド繊維の未延伸糸をバインダーとし
て延伸糸に混合して用いることが好ましく、この場合、
未延伸糸の混合率を不織布全体の１０重量％以上、９０
重量％以下とすることが好ましい。ポリフェニレンサル
ファイド未延伸糸の混合率が１０％未満であった場合、
不織布の強度が低くなるので好ましくない。また、未延
伸糸が９０重量％を超えると、未延伸糸同士の融着量が
多くなりすぎ、吸液に必要な繊維間の隙間が少なくなる
ため、吸液速度が低くなるので好ましくない。In the hydrophilic nonwoven fabric of the present invention, it is preferable to use an undrawn yarn of polyphenylene sulfide fiber as a binder and to mix it with a drawn yarn.
The mixing ratio of the undrawn yarn is 10% by weight or more of the whole nonwoven fabric, 90%
% By weight or less. When the mixing ratio of the undrawn polyphenylene sulfide yarn is less than 10%,
It is not preferable because the strength of the nonwoven fabric is reduced. On the other hand, if the amount of the undrawn yarn exceeds 90% by weight, the amount of fusion between the undrawn yarns becomes too large, and the gap between the fibers necessary for liquid absorption becomes small, so that the liquid absorption speed becomes low.
【００２０】また、本発明で用いられるポリフェニレン
サルファイド繊維の単繊維繊度は０．１〜１５デニール
であることが好ましく、より好ましくは０．５〜８デニ
ールである。単糸繊度が０．１デニール未満であると繊
維そのものの強度が低くなり、不織布の強度が低くな
る。また、単繊維繊度が１５デニールを超えると繊維間
の空隙が大きくなり吸液速度が低くなる傾向がある。The single fiber fineness of the polyphenylene sulfide fiber used in the present invention is preferably 0.1 to 15 denier, more preferably 0.5 to 8 denier. If the single-fiber fineness is less than 0.1 denier, the strength of the fiber itself becomes low, and the strength of the nonwoven fabric becomes low. On the other hand, if the single fiber fineness exceeds 15 denier, the space between the fibers tends to increase, and the liquid absorption rate tends to decrease.
【００２１】また、ポリフェニレンサルファイド繊維の
繊維長は０．３〜２５ｍｍであることが好ましい。繊維
長が０．３ｍｍ未満の場合、繊維間の絡合が不十分とな
り、不織布の強度が低くなる。また、繊維長が２５ｍｍ
を超えると抄造時に繊維の分散性が悪くなり目付むらを
生じることがある。また、本発明に用いられるポリフェ
ニレンサルファイド繊維に捲縮を付与することにより、
さらに不織布の強度を大きくすることができる。Further, the fiber length of the polyphenylene sulfide fiber is preferably 0.3 to 25 mm. When the fiber length is less than 0.3 mm, the entanglement between the fibers becomes insufficient, and the strength of the nonwoven fabric decreases. The fiber length is 25mm
If it exceeds 300, the dispersibility of the fibers during the papermaking becomes poor, which may cause unevenness in the weight. Further, by imparting a crimp to the polyphenylene sulfide fiber used in the present invention,
Further, the strength of the nonwoven fabric can be increased.
【００２２】本発明の親水性不織布は、湿式不織布、ニ
ードルパンチ不織布、スパンレース不織布、スパンボン
ド不織布、メルトブロー不織布、レジンボンド不織布、
ケミカルボンド不織布、サーマルボンド不織布、などの
公知の製法を用いることができるが、電池セパレーター
材として用いるにあたっては、これらの中でも厚みが薄
い点から湿式不織布であることが好ましい。The hydrophilic nonwoven fabric of the present invention includes a wet nonwoven fabric, a needle punched nonwoven fabric, a spunlace nonwoven fabric, a spunbonded nonwoven fabric, a melt blown nonwoven fabric, a resin bonded nonwoven fabric,
Known production methods such as a chemical bond nonwoven fabric and a thermal bond nonwoven fabric can be used, but when used as a battery separator material, among these, a wet nonwoven fabric is preferable because of its small thickness.
【００２３】本発明の親水性不織布においては、既述の
とおり、ＪＩＳ Ｌ−１０９６に規定されたバイレック
法に準じて測定される水酸化カリウム水溶液の吸液速度
が１０ｍｍ／３０ｍｉｎ以上であることが好ましい。吸
液速度が１０ｍｍ／３０ｍｉｎ未満の場合は、電池セパ
レーター材として用いた際に電池生産時の吸液に時間を
要するので好ましくない。In the hydrophilic nonwoven fabric of the present invention, as described above, the liquid absorption rate of the aqueous potassium hydroxide solution measured according to the BIREC method specified in JIS L-1096 is preferably 10 mm / 30 min or more. preferable. If the liquid absorption rate is less than 10 mm / 30 min, it is not preferable because it takes time to absorb the liquid during battery production when used as a battery separator material.
【００２４】また、本発明の親水性不織布を電池セパレ
ーター材として用いる際には、親水性不織布の目付は５
〜２００ｇ／ｍ2であることが好ましい。目付が３０ｇ
／ｍ2未満の場合、親水性不織布の引張強力が低くなる
ので好ましくなく、また目付が２００ｇ／ｍ2を超える
と、厚みが大きくなるので好ましくない。When the hydrophilic nonwoven fabric of the present invention is used as a battery separator material, the basis weight of the hydrophilic nonwoven fabric is 5%.
Is preferably to 200 g / m 2. The basis weight is 30g
If it is less than / m 2, the tensile strength of the hydrophilic nonwoven fabric will be low, which is not preferred. If the basis weight exceeds 200 g / m 2 , the thickness will be undesirably large.
【００２５】また、本発明の親水性不織布の厚みは、１
５０μｍ以下であることが好ましい。厚みが１５０μｍ
を超えると、電池セパレーター材として使用した際に電
池そのものの体積が大きくなるので好ましくない。さら
に、本発明の親水性不織布の引張強力は１ｋｇｆ／１５
ｍｍであることが好ましい。引張強力が１ｋｇｆ／１５
ｍｍ未満である場合、電池生産時の取り扱い性が劣るよ
うになる。The hydrophilic nonwoven fabric of the present invention has a thickness of 1
It is preferably 50 μm or less. 150 μm thickness
Exceeding the range is not preferable because the volume of the battery itself becomes large when used as a battery separator material. Further, the tensile strength of the hydrophilic nonwoven fabric of the present invention is 1 kgf / 15
mm. Tensile strength is 1kgf / 15
When it is less than mm, the handleability during battery production becomes inferior.
【００２６】次に、本発明の親水性不織布の好ましい製
造方法について述べる。Next, a preferred method for producing the hydrophilic nonwoven fabric of the present invention will be described.
【００２７】本発明の親水性不織布は、ポリフェニレン
サルファイド延伸糸の短繊維と、ポリフェニレンサルフ
ァイド未延伸糸の短繊維と、パラ系ポリアラミドからな
るパルプを混合し、通常の湿式抄紙法により得られた湿
式不織布を、熱プレス機、ヒートロールカレンダーなど
を用い、１２０℃〜２４０℃の温度、１０〜７００ｋｇ
ｆ／ｃｍの線圧で熱圧着することにより得ることができ
る。ここにおいて、パラ系ポリアラミドからなるパルプ
は、高圧ホモジナイザーを用い、繊維懸濁液を高速度で
小径オリフィスを通過させ、次いでこれをオリフィス出
口近傍の壁体に衝突させて急速に減速させることによ
り、繊維に切断作用を与えフィブリル化させて作成する
ことができる。このようにして得られた親水性不織布
は、ポリフェニレンサルファイド未延伸糸がバインダー
成分となり、ポリフェニレンサルファイド延伸糸同士を
接着させ、これらポリフェニレンサルファイドからなる
湿式不織布の中にパラ系アラミドからなるパルプが混在
する状態となる。The hydrophilic nonwoven fabric of the present invention is prepared by mixing a short fiber of a drawn polyphenylene sulfide yarn, a short fiber of a non-drawn polyphenylene sulfide yarn, and a pulp made of para-polyaramid, and wet-processed by a usual wet papermaking method. Using a hot press, a heat roll calender, or the like, the nonwoven fabric is heated at a temperature of 120 to 240 ° C. and 10 to 700 kg.
It can be obtained by thermocompression bonding at a linear pressure of f / cm. Here, the pulp composed of para-based polyaramid uses a high-pressure homogenizer, passes the fiber suspension through a small-diameter orifice at a high speed, and then collides it with a wall near the orifice outlet to rapidly reduce the speed. It can be made by giving fibers a cutting action and fibrillating. In the hydrophilic nonwoven fabric thus obtained, the polyphenylene sulfide undrawn yarn becomes a binder component, and the polyphenylene sulfide drawn yarns are bonded to each other, and the pulp made of para-aramid is mixed in the wet nonwoven fabric made of these polyphenylene sulfides. State.
【００２８】このようにして得られた本発明の親水性不
織布は、電池セパレーター材として好適に用いることが
できるが、特に電解液が水溶液の場合、吸液速度が高い
点から、より好ましく使用される。更に好ましくは、電
解液がアルカリ水溶液の電池の電池セパレーター材とし
ても好適に使用される。このような電池の例として、ニ
ッケルカドミウム電池やニッケル水素電池などのアルカ
リ電池などが挙げられる。The thus-obtained hydrophilic nonwoven fabric of the present invention can be suitably used as a battery separator material. However, when the electrolyte is an aqueous solution, it is more preferably used because of its high liquid absorption rate. You. More preferably, the electrolyte is also suitably used as a battery separator material of a battery in which an alkaline aqueous solution is used. Examples of such batteries include alkaline batteries such as nickel cadmium batteries and nickel hydrogen batteries.
【００２９】また、ここで述べた製法により得られた親
水性不織布は、親水性以外の機械的取り扱い性や熱寸法
安定性、耐熱性、耐薬品性、難燃性に優れるものであ
り、電池セパレーター材以外の用途においても好適に用
いられる。これら用途の具体適例としては、電気製品の
プリント配線基盤や、モーターやマグネットなどの電気
絶縁材料、および電池セパレーターを保護する電池セパ
レーター保護材などが挙げられる。The hydrophilic nonwoven fabric obtained by the production method described above is excellent in mechanical handling properties other than hydrophilicity, thermal dimensional stability, heat resistance, chemical resistance, and flame retardancy. It is suitably used in applications other than the separator material. Specific examples of these uses include printed wiring boards for electric products, electric insulating materials such as motors and magnets, and battery separator protective materials for protecting battery separators.
【００３０】[0030]
【実施例】以下、実施例によって本発明をさらに具体的
に説明する。なお、実施例で用いたパラ系アラミド繊維
からなるパルプの濾水度、および実施例および比較例で
作成した湿式不織布の吸液速度および引張破断強力は、
以下の方法で測定したものである。The present invention will be described more specifically with reference to the following examples. The freeness of pulp composed of para-aramid fibers used in the examples, and the liquid absorption rate and tensile breaking strength of the wet nonwoven fabrics prepared in the examples and comparative examples,
It was measured by the following method.
【００３１】（濾水度）ＪＩＳ Ｐ−８１２１「パルプ
の濾水度試験方法」記載のカナダ標準形測定法に準じて
測定する。(Freeness) Measured according to the Canadian standard type measurement method described in JIS P-8121 “Testing Method for Freeness of Pulp”.
【００３２】（吸液速度）３０重量％の水酸化カリュウ
ム水溶液の吸液速度をＪＩＳＬ−１０９６に規定された
バイレック法に準じて測定する。(Liquid Absorption Rate) The liquid absorption rate of a 30% by weight aqueous solution of calcium hydroxide is measured according to the BIREC method specified in JISL-1096.
【００３３】（引張破断強力）テンシロン引張試験機を
用い、試料幅１５ｍｍ、つかみ間隔１００ｍｍ、引張速
度１００ｍｍ／ｍｉｎで測定する。(Tensile breaking strength) Measured using a Tensilon tensile tester at a sample width of 15 mm, a grip interval of 100 mm, and a tensile speed of 100 mm / min.
【００３４】（実施例１）単糸繊度０．９デニール、繊
維長６ｍｍのポリフェニレンサルファイド延伸糸の短繊
維（東レ（株）製「トルコン」）と、単糸繊度２．０デ
ニール、繊維長６ｍｍのポリフェニレンサルファイド未
延伸糸の短繊維（東レ（株）製「トルコン」）と、単糸
繊度１．５デニール、繊維長５ｍｍのパラ系アラミド短
繊維をフィブリル化してなるパルプ（デュポン（株）製
「ケブラー」、濾水度：２１０ｍｌ）を、重量比２５：
５０：２５で混合し、通常の湿式抄紙法で目付８２ｇ／
ｍ2の湿式不織布を得た。次いで、得られた湿式不織布
をカレンダーロールで温度２４０℃、線圧３００ｋｇｆ
／ｃｍで熱処理を行ない、親水性不織布を得た。(Example 1) Short fibers of a polyphenylene sulfide drawn yarn having a single yarn fineness of 0.9 denier and a fiber length of 6 mm ("Torcon" manufactured by Toray Industries, Inc.), a single yarn fineness of 2.0 denier and a fiber length of 6 mm Pulp obtained by fibrillating short fibers of undrawn polyphenylene sulfide yarn ("Torcon" manufactured by Toray Industries, Inc.) and para-aramid short fibers having a denier of 1.5 denier and a fiber length of 5 mm (manufactured by DuPont) "Kevlar", freeness: 210 ml), weight ratio 25:
The mixture was mixed at a ratio of 50:25.
Thus, a wet nonwoven fabric of m 2 was obtained. Next, the obtained wet nonwoven fabric was heated at a temperature of 240 ° C. and a linear pressure of 300 kgf with a calender roll.
/ Cm, and a hydrophilic nonwoven fabric was obtained.
【００３５】（実施例２）実施例１で用いた単糸繊度
０．９デニール、繊維長６ｍｍのポリフェニレンサルフ
ァイド延伸糸の短繊維（東レ（株）製「トルコン」）
と、単糸繊度２．０デニール、繊維長６ｍｍのポリフェ
ニレンサルファイド未延伸糸の短繊維（東レ（株）製
「トルコン」）と、単糸繊度１．５デニール、繊維長５
ｍｍのパラ系アラミド短繊維からなるパルプ（デュポン
（株）製「ケブラー」濾水度：２１０ｍｌ）の重量比を
５：５０：４５に変更し、通常の湿式抄紙法で目付７９
ｇ／ｍ2の湿式不織布を得た。次いで、得られた湿式不
織布をカレンダーロールで温度２４０℃、線圧３００ｋ
ｇｆ／ｃｍで熱処理を行ない、親水性不織布を得た。(Example 2) Short fibers of a polyphenylene sulfide drawn yarn having a single fiber fineness of 0.9 denier and a fiber length of 6 mm used in Example 1 ("Torcon" manufactured by Toray Industries, Inc.)
And a short fiber of undrawn polyphenylene sulfide yarn having a single yarn fineness of 2.0 denier and a fiber length of 6 mm ("Torcon" manufactured by Toray Industries, Inc.), a single yarn fineness of 1.5 denier, and a fiber length of 5
The weight ratio of pulp ("Kevlar" manufactured by Dupont Co., Ltd., freeness: 210 ml) made of para-aramid short fibers having a thickness of 5 mm was changed to 5:50:45, and the basis weight was 79 by a usual wet papermaking method.
g / m 2 was obtained. Next, the obtained wet nonwoven fabric was heated at a temperature of 240 ° C. and a linear pressure of 300 k with a calender roll.
Heat treatment was performed at gf / cm to obtain a hydrophilic nonwoven fabric.
【００３６】（比較例１）実施例１で用いた単糸繊度
０．９デニール、繊維長６ｍｍのポリフェニレンサルフ
ァイド延伸糸の短繊維（東レ（株）製「トルコン」）
と、単糸繊度２．０デニール、繊維長６ｍｍのポリフェ
ニレンサルファイド未延伸糸の短繊維（東レ（株）製
「トルコン」）を、重量比５０：５０で混合し、通常の
湿式抄紙法で目付８１ｇ／ｍ2の湿式不織布を得た。次
いで、得られた湿式不織布をカレンダーロールで温度２
４０℃、線圧３００ｋｇｆ／ｃｍで熱処理を行なった。(Comparative Example 1) Short fibers of a polyphenylene sulfide drawn yarn having a single yarn fineness of 0.9 denier and a fiber length of 6 mm used in Example 1 ("Torcon" manufactured by Toray Industries, Inc.)
And short fibers of undrawn polyphenylene sulfide yarn having a fiber denier of 2.0 denier and a fiber length of 6 mm ("Torcon" manufactured by Toray Industries, Inc.) are mixed at a weight ratio of 50:50, and are then weighted by a normal wet papermaking method. A wet nonwoven fabric of 81 g / m 2 was obtained. Subsequently, the obtained wet nonwoven fabric was calendered at a temperature of 2 ° C.
Heat treatment was performed at 40 ° C. and a linear pressure of 300 kgf / cm.
【００３７】（比較例２）実施例１で用いた単糸繊度
０．９デニール、繊維長６ｍｍのポリフェニレンサルフ
ァイド延伸糸の短繊維と、単糸繊度２．０デニール、繊
維長６ｍｍのポリフェニレンサルファイド未延伸糸の短
繊維と、単糸繊度１．５ｄ、繊維長５ｍｍのパラ系アラ
ミド短繊維（デュポン（株）製「ケブラー」濾水度：９
８０ｍｌ）を、重量比２５：５０：２５で混合し、通常
の湿式抄紙法で目付７８ｇ／ｍ2の湿式不織布を得た。
次いで得られた湿式不織布をカレンダーロールで温度２
４０℃、線圧３００ｋｇｆ／ｃｍで熱処理を行なった。(Comparative Example 2) The short fibers of the drawn single-filament polyphenylene sulfide yarn having a denier of 0.9 denier and 6 mm in fiber length used in Example 1 and the polyphenylene sulfide having a denier of 2.0 denier and a fiber length of 6 mm were used. Short fibers of a drawn yarn and a para-aramid short fiber having a single yarn fineness of 1.5 d and a fiber length of 5 mm (Kevlar manufactured by DuPont, having a freeness of 9
80 ml) were mixed at a weight ratio of 25:50:25 to obtain a wet nonwoven fabric having a basis weight of 78 g / m 2 by a usual wet papermaking method.
Then, the obtained wet nonwoven fabric is calendered at a temperature of 2 ° C.
Heat treatment was performed at 40 ° C. and a linear pressure of 300 kgf / cm.
【００３８】（比較例３）実施例１で用いた単糸繊度
０．９デニール、繊維長６ｍｍのポリフェニレンサルフ
ァイド延伸糸の短繊維と、単糸繊度２．０デニール、繊
維長６ｍｍのポリフェニレンサルファイド未延伸糸の短
繊維と、単糸繊度１．５デニール、繊維長５ｍｍのパラ
系アラミド短繊維からなるパルプ（デュポン（株）製
「ケブラー」濾水度：２１０ｍｌ）を、重量比４５：５
０：５で混合し、通常の湿式抄紙法で目付８０ｇ／ｍ2
の湿式不織布を得た。次いで、得られた湿式不織布をカ
レンダーロールで温度２４０℃、線圧３００ｋｇｆ／ｃ
ｍで熱処理を行なった。(Comparative Example 3) A short fiber of a drawn polyphenylene sulfide yarn having a denier of 0.9 denier and a fiber length of 6 mm used in Example 1 and a polyphenylene sulfide having a denier of single denier of 2.0 denier and a fiber length of 6 mm were used. A pulp composed of short fibers of a drawn yarn and a para-aramid short fiber having a fiber denier of 1.5 denier and a fiber length of 5 mm ("Kevlar" freeness: 210 ml, manufactured by DuPont) having a weight ratio of 45: 5
The mixture was mixed at a ratio of 0: 5 and the basis weight was 80 g / m 2 by a usual wet papermaking method.
Was obtained. Next, the obtained wet nonwoven fabric was heated at a temperature of 240 ° C. and a linear pressure of 300 kgf / c using a calender roll.
m.
【００３９】（比較例４）実施例１で用いた単糸繊度
０．９デニール、繊維長６ｍｍのポリフェニレンサルフ
ァイド延伸糸の短繊維と、単糸繊度２．０デニール、繊
維長６ｍｍのポリフェニレンサルファイド未延伸糸の短
繊維と、単糸繊度１．５デニール、繊維長５ｍｍのパラ
系アラミド短繊維からなるパルプ（デュポン（株）製
「ケブラー」濾水度：２１０ｍｌ）を、重量比４：４：
９２で混合し、通常の湿式抄紙法で目付８０ｇ／ｍ2の
湿式不織布を得た。次いで、得られた湿式不織布をカレ
ンダーロールで温度２４０℃、線圧３００ｋｇｆ／ｃｍ
で熱処理を行なった。(Comparative Example 4) The short fiber of the drawn single-filament polyphenylene sulfide yarn having a denier of 0.9 denier and 6 mm in fiber length used in Example 1 and the polyphenylene sulfide having a denier of single denier of 2.0 denier and a fiber length of 6 mm were not used. A pulp composed of short fibers of a drawn yarn and para-aramid short fibers having a denier of 1.5 denier and a fiber length of 5 mm ("Kevlar" freeness: 210 ml, manufactured by DuPont) having a weight ratio of 4: 4:
The mixture was mixed at 92 to obtain a wet nonwoven fabric having a basis weight of 80 g / m 2 by a usual wet papermaking method. Then, the obtained wet nonwoven fabric was heated at a temperature of 240 ° C. and a linear pressure of 300 kgf / cm using a calender roll.
The heat treatment was performed.
【００４０】これら実施例１、２および比較例１〜３の
結果をまとめて表１に示す。The results of Examples 1 and 2 and Comparative Examples 1 to 3 are summarized in Table 1.
【００４１】[0041]
【表１】 表１からわかるように、実施例１と２の親水性不織布
は、吸液速度が高く、かつ引張破断強力も高いものであ
った。[Table 1] As can be seen from Table 1, the hydrophilic nonwoven fabrics of Examples 1 and 2 had a high liquid absorption rate and a high tensile strength at break.
【００４２】さらに、実施例１と２の親水性不織布を、
ニッケル水素電池のセパレーター材に用いたところ、生
産効率が良好で、機械的取り扱い性に優れるものであっ
た。Further, the hydrophilic nonwoven fabrics of Examples 1 and 2 were
When used for a separator material of a nickel-metal hydride battery, the production efficiency was good and the mechanical handling was excellent.
【００４３】[0043]
【発明の効果】本発明によれば、ポリフェニレンサルフ
ァイド繊維とフィブリル化したパルプ状のアラミド繊維
を、所定割合で配合したことにより、吸液速度が高く、
しかも引張破断強力の高い、電池セパレーター材として
好適な親水性不織布が得られる。According to the present invention, the polyphenylene sulfide fiber and the fibrillated pulp-like aramid fiber are blended in a predetermined ratio, so that the liquid absorption rate is high,
Moreover, a hydrophilic nonwoven fabric having high tensile strength at break and suitable as a battery separator material can be obtained.
【００４４】また、本発明の親水性不織布は、特にプラ
ズマ加工などの後加工を施すことなく、電池セパレータ
ー材に必要な親水性を有している。Further, the hydrophilic nonwoven fabric of the present invention has a hydrophilic property required for a battery separator material without performing post-processing such as plasma processing.
Claims (11)
維とポリフェニレンサルファイド繊維とを含み、フィブ
リル化したパルプ状のアラミド繊維の含有量が１０〜９
０重量％であることを特徴とする親水性不織布。1. A fibrillated pulp-like aramid fiber comprising a fibrillated pulp-like aramid fiber and a polyphenylene sulfide fiber, wherein the content of the fibrillated pulp-like aramid fiber is from 10 to 9.
A hydrophilic nonwoven fabric, which is 0% by weight.
％であることを特徴とする請求項１記載の親水性不織
布。2. The hydrophilic nonwoven fabric according to claim 1, wherein the content of the aramid fiber is 20 to 40% by weight.
あることを特徴とする請求項１または２記載の親水性不
織布。3. The hydrophilic nonwoven fabric according to claim 1, wherein the liquid absorbing speed is 10 mm / 30 min or more.
ることを特徴とする請求項１〜３のいずれかに記載の親
水性不織布。4. The hydrophilic nonwoven fabric according to claim 1, wherein the aramid fibers are para-aramid fibers.
維の濾水度が９００ｍｌ以下であることを特徴とする請
求項１〜４のいずれかに記載の親水性不織布。5. The hydrophilic nonwoven fabric according to claim 1, wherein the freeness of the fibrillated pulp-like aramid fiber is 900 ml or less.
て、ポリフェニレンサルファイド繊維の未延伸糸を不織
布全体の１０重量％以上、９０重量％以下混用すること
を特徴とする請求項１〜５のいずれかに記載の親水性不
織布。6. The hydrophilicity according to claim 1, wherein unstretched yarn of polyphenylene sulfide fiber is used as the polyphenylene sulfide fiber in an amount of 10% by weight or more and 90% by weight or less of the whole nonwoven fabric. Non-woven fabric.
特徴とする請求項１〜６のいずれかに記載の親水性不織
布。7. The hydrophilic nonwoven fabric according to claim 1, wherein the hydrophilic nonwoven fabric is a wet nonwoven fabric.
性不織布からなる電池セパレーター材。8. A battery separator material comprising the hydrophilic hydrophilic nonwoven fabric according to any one of claims 1 to 7.
いてなる電池。9. A battery using the battery separator material according to claim 8.
徴とする請求項９記載の電池。10. The battery according to claim 9, wherein the electrolyte of the battery is an aqueous solution.
ことを特徴とする請求項９または１０記載の電池。11. The battery according to claim 9, wherein the electrolyte of the battery is an alkaline aqueous solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11207500A JP2001040597A (en) | 1999-07-22 | 1999-07-22 | Hydrophilic nonwoven fabric, battery separator and battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11207500A JP2001040597A (en) | 1999-07-22 | 1999-07-22 | Hydrophilic nonwoven fabric, battery separator and battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001040597A true JP2001040597A (en) | 2001-02-13 |
Family
ID=16540755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11207500A Pending JP2001040597A (en) | 1999-07-22 | 1999-07-22 | Hydrophilic nonwoven fabric, battery separator and battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001040597A (en) |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002279958A (en) * | 2001-03-19 | 2002-09-27 | Japan Vilene Co Ltd | Separator for battery |
| JP2003031440A (en) * | 2001-07-18 | 2003-01-31 | Nippon Kodoshi Corp | Electric double layer capacitor |
| JP2003059766A (en) * | 2001-08-21 | 2003-02-28 | Mitsubishi Paper Mills Ltd | Separator for electrochemical element and manufacturing method thereof |
| EP1553644A1 (en) * | 2002-06-28 | 2005-07-13 | Dupont Teijin Advanced Papers Ltd. | Coating separator, process for producing the same and electrical and electronic parts including the separator |
| JP2006054127A (en) * | 2004-08-12 | 2006-02-23 | Du Pont Teijin Advanced Paper Kk | Separator and electric and electronic component using it |
| JPWO2005057689A1 (en) * | 2003-12-11 | 2007-07-05 | デュポン帝人アドバンスドペーパー株式会社 | Heat-resistant separator and electrical and electronic parts using the same |
| JP2009087948A (en) * | 2008-12-05 | 2009-04-23 | Du Pont Teijin Advanced Paper Kk | Coating separator, its manufacturing method, and electric/electronic parts using it |
| JP2014183235A (en) * | 2013-03-19 | 2014-09-29 | Nippon Kodoshi Corp | Separator for capacitor, and capacitor arranged by use thereof |
| KR20160032231A (en) * | 2013-07-18 | 2016-03-23 | 데이진 아라미드 비.브이. | Fire-retardant sheet material |
| CN106087529A (en) * | 2016-06-08 | 2016-11-09 | 华南理工大学 | The preparation method of self-reinforcing is pressed in a kind of high intensity aramid fiber paper and dissolving thereof again |
| WO2018186135A1 (en) * | 2017-04-06 | 2018-10-11 | マクセルホールディングス株式会社 | Separator and non-aqueous electrolyte battery |
| WO2018230391A1 (en) | 2017-06-15 | 2018-12-20 | 東レ株式会社 | Wet nonwoven fabric containing meta-aramid and polyphenylene sulfide, and multilayer sheet of same |
| US10547046B2 (en) | 2011-11-30 | 2020-01-28 | Lawrence Livermore National Security, Llc | High energy/power density nickel oxide/hydroxide materials and nickel cobalt oxide/hydroxide materials and production thereof |
| JP2020076174A (en) * | 2018-11-08 | 2020-05-21 | 三菱製紙株式会社 | Wet type nonwoven fabric containing polyphenylene sulfide fiber |
| CN111668430A (en) * | 2014-05-13 | 2020-09-15 | 赛尔格有限责任公司 | Functionalized porous membranes and methods of making and using the same |
| CN113201839A (en) * | 2020-01-15 | 2021-08-03 | 东丽纤维研究所（中国）有限公司 | Polyphenylene sulfide fabric for water electrolyzer, preparation method and application thereof |
| CN113914012A (en) * | 2021-11-05 | 2022-01-11 | 绍兴市恒睿新材料科技有限公司 | Aramid fiber non-woven paper production process |
-
1999
- 1999-07-22 JP JP11207500A patent/JP2001040597A/en active Pending
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002279958A (en) * | 2001-03-19 | 2002-09-27 | Japan Vilene Co Ltd | Separator for battery |
| JP4560227B2 (en) * | 2001-03-19 | 2010-10-13 | 日本バイリーン株式会社 | Battery separator |
| JP2003031440A (en) * | 2001-07-18 | 2003-01-31 | Nippon Kodoshi Corp | Electric double layer capacitor |
| JP2003059766A (en) * | 2001-08-21 | 2003-02-28 | Mitsubishi Paper Mills Ltd | Separator for electrochemical element and manufacturing method thereof |
| EP1553644A1 (en) * | 2002-06-28 | 2005-07-13 | Dupont Teijin Advanced Papers Ltd. | Coating separator, process for producing the same and electrical and electronic parts including the separator |
| EP1553644A4 (en) * | 2002-06-28 | 2007-11-07 | Dupont Teijin Advanced Papers | Coating separator, process for producing the same and electrical and electronic parts including the separator |
| JPWO2005057689A1 (en) * | 2003-12-11 | 2007-07-05 | デュポン帝人アドバンスドペーパー株式会社 | Heat-resistant separator and electrical and electronic parts using the same |
| JP2006054127A (en) * | 2004-08-12 | 2006-02-23 | Du Pont Teijin Advanced Paper Kk | Separator and electric and electronic component using it |
| JP2009087948A (en) * | 2008-12-05 | 2009-04-23 | Du Pont Teijin Advanced Paper Kk | Coating separator, its manufacturing method, and electric/electronic parts using it |
| US10547046B2 (en) | 2011-11-30 | 2020-01-28 | Lawrence Livermore National Security, Llc | High energy/power density nickel oxide/hydroxide materials and nickel cobalt oxide/hydroxide materials and production thereof |
| JP2014183235A (en) * | 2013-03-19 | 2014-09-29 | Nippon Kodoshi Corp | Separator for capacitor, and capacitor arranged by use thereof |
| KR20160032231A (en) * | 2013-07-18 | 2016-03-23 | 데이진 아라미드 비.브이. | Fire-retardant sheet material |
| CN111668430A (en) * | 2014-05-13 | 2020-09-15 | 赛尔格有限责任公司 | Functionalized porous membranes and methods of making and using the same |
| CN106087529A (en) * | 2016-06-08 | 2016-11-09 | 华南理工大学 | The preparation method of self-reinforcing is pressed in a kind of high intensity aramid fiber paper and dissolving thereof again |
| WO2018186135A1 (en) * | 2017-04-06 | 2018-10-11 | マクセルホールディングス株式会社 | Separator and non-aqueous electrolyte battery |
| JPWO2018186135A1 (en) * | 2017-04-06 | 2019-06-27 | マクセルホールディングス株式会社 | Separator and non-aqueous electrolyte battery |
| US11177535B2 (en) | 2017-04-06 | 2021-11-16 | Maxell Holdings, Ltd. | Separator and non-aqueous electrolyte battery |
| WO2018230391A1 (en) | 2017-06-15 | 2018-12-20 | 東レ株式会社 | Wet nonwoven fabric containing meta-aramid and polyphenylene sulfide, and multilayer sheet of same |
| KR20200019128A (en) | 2017-06-15 | 2020-02-21 | 도레이 카부시키가이샤 | Wet nonwoven fabric containing metaaramid and polyphenylene sulfide and laminated sheet thereof |
| JP2020076174A (en) * | 2018-11-08 | 2020-05-21 | 三菱製紙株式会社 | Wet type nonwoven fabric containing polyphenylene sulfide fiber |
| CN113201839A (en) * | 2020-01-15 | 2021-08-03 | 东丽纤维研究所（中国）有限公司 | Polyphenylene sulfide fabric for water electrolyzer, preparation method and application thereof |
| CN113914012A (en) * | 2021-11-05 | 2022-01-11 | 绍兴市恒睿新材料科技有限公司 | Aramid fiber non-woven paper production process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2001040597A (en) | Hydrophilic nonwoven fabric, battery separator and battery | |
| JP4244294B2 (en) | Separator for electrochemical device and manufacturing method thereof | |
| JP5651120B2 (en) | Lithium secondary battery substrate and lithium secondary battery separator | |
| KR100283901B1 (en) | Nonwoven fabric for nonaqueous electrolyte battery separator and nonaqueous electrolyte battery using the same | |
| JP4699899B2 (en) | Separator material for alkaline secondary battery, method for producing the same, and separator for alkaline secondary battery | |
| JP3810844B2 (en) | Battery separator and battery | |
| JP6449888B2 (en) | Separator paper for chemical batteries | |
| JPH0927311A (en) | Nonwoven fabric for battery separator | |
| JP2001155709A (en) | Separator for battery | |
| US20220158299A1 (en) | Lithium ion battery separator and lithium ion battery | |
| JP2002266281A (en) | Wet type nonwoven fabric, separator for electrochemical element and separator for electric double layer capacitor by using the same fabric | |
| JP2001207362A (en) | Non-woven fabric having excellent thrust resistance, method for producing the same and separator for battery | |
| JP3971905B2 (en) | Separator for electrochemical device and method for producing the same | |
| JP5191091B2 (en) | Lithium ion secondary battery separator and lithium ion secondary battery | |
| JP2984561B2 (en) | Battery separator and manufacturing method thereof | |
| JP3678680B2 (en) | Battery separator | |
| JP2003105660A (en) | Nonwoven fabric, battery using the nonwoven fabric and capacitor using the nonwoven fabric | |
| JP2012227116A (en) | Separator for lithium secondary battery, and lithium secondary battery | |
| JP2003059482A (en) | Separator material, its manufacturing method, and battery | |
| JP4685344B2 (en) | Battery separator | |
| JP4468790B2 (en) | Nonwoven fabric, separator for electric double layer capacitor, separator for lithium ion secondary battery, electric double layer capacitor and lithium ion secondary battery | |
| JP4390956B2 (en) | Alkaline battery separator | |
| JP2006269384A (en) | Separator for alkaline battery | |
| JP4180273B2 (en) | Method for producing support for solid electrolyte | |
| JP2002298821A (en) | Battery separator and battery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20060721 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20090119 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20090127 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20090226 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20090324 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20090721 |