JP2002216733A - Separator for sealed lead-acid battery and manufacturing method for it - Google Patents
Separator for sealed lead-acid battery and manufacturing method for itInfo
- Publication number
- JP2002216733A JP2002216733A JP2001008851A JP2001008851A JP2002216733A JP 2002216733 A JP2002216733 A JP 2002216733A JP 2001008851 A JP2001008851 A JP 2001008851A JP 2001008851 A JP2001008851 A JP 2001008851A JP 2002216733 A JP2002216733 A JP 2002216733A
- Authority
- JP
- Japan
- Prior art keywords
- inorganic
- separator
- sealed lead
- acid battery
- mixed
- 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.)
- Withdrawn
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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、電解液の保持性と
極板との密着性と耐短絡性に優れた微細ガラス繊維と無
機粉体を含有した無機材料を主体とした密閉型鉛蓄電池
用セパレータに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealed lead-acid battery mainly composed of an inorganic material containing fine glass fiber and inorganic powder, which is excellent in electrolyte retention, adhesion to an electrode plate and short-circuit resistance. For separators for
【０００２】[0002]
【従来の技術】従来、耐短絡性に優れた密閉型鉛蓄電池
用セパレータとして、ガラス繊維と無機粉体で構成した
ものや、ガラス繊維、合成繊維及ＳｉＯ２び無機粉体で
構成したものが知られている。例えば、特開昭５８−２
０６０４６号公報には、粒子を保持したガラス繊維もし
くは合成繊維からなるセパレータが開示されている。ま
た、特開昭６１−２６９８５２号公報には、平均直径
１．０〜５．０μｍの含アルカリ珪酸塩ガラスを主体と
する繊維と、比表面積１００ｍ２／ｇ以上のシリカを主
体とする粉末を、このシリカ粉末量がセパレータ重量の
４０質量％となるように湿式混抄し、ガラス繊維の間隙
に粉末粒子を介在させて孔径を微細化すると共に、繊維
間同士または繊維と粉末粒子とを、主として抄造の際に
生じる水ガラス状物質によって相互に結合するようにし
たセパレータが開示されている。さらに、特開平６−１
７６７４９号公報には、ポリオレフィン系合成パルプ、
ガラス繊維、合成繊維及び無機粉体を配合し、混抄した
セパレータが開示されている。2. Description of the Related Art Conventionally, as a separator for a sealed lead-acid battery having excellent short-circuit resistance, a separator made of glass fiber and inorganic powder, and a separator made of glass fiber, synthetic fiber, and SiO 2 or inorganic powder have been known. Are known. For example, JP-A-58-2
JP 06046 discloses a separator made of glass fiber or synthetic fiber holding particles. JP-A-61-269852 discloses a fiber mainly composed of an alkali silicate glass having an average diameter of 1.0 to 5.0 μm and a powder mainly composed of silica having a specific surface area of 100 m 2 / g or more. The mixture is wet-mixed so that the amount of the silica powder is 40% by mass of the separator weight, the pore size is reduced by interposing the powder particles in the gap between the glass fibers, and the inter-fiber or fiber and powder particles are mainly separated. Disclosed are separators that are bonded to each other by a water glass-like substance generated during papermaking. Further, Japanese Patent Laid-Open No. 6-1
No. 76749 discloses polyolefin synthetic pulp,
A separator in which glass fiber, synthetic fiber and inorganic powder are blended and mixed is disclosed.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上記従
来のセパレータにおいては、それぞれ次のような問題点
を有する。つまり、結合剤を使用しないセパレータで
は、電池組立時に無機粉体が脱落し易いため、組立作業
性が悪くなる。また、水ガラス状物質によって繊維同士
または繊維と無機粉体を結合するようにしたセパレータ
では、ｐＨを２．５〜３．５に保った水の中で一定時間
分散させる必要があり、工程が複雑化する上、無機質か
らなる水ガラス状物質を結合剤としていることからセパ
レータが硬くて脆く、電池組立作業性が悪くなる。ま
た、高分子凝集剤や無機凝集剤を使用しないセパレータ
では、無機粉体と各種繊維材料との水中での結合力に乏
しいため、抄紙時のシートに対する無機粉体の歩留まり
が悪く、甚だしくは、使用した無機粉体の２０〜４０質
量％が抄造ワイヤーを通過して水中に流出してしまう。
また、合成パルプ及び合成繊維からなる合成樹脂をバイ
ンダーとしたセパレータでは、材料相互間を強く結合す
るため、前記のセパレータと同様にセパレータが硬くな
り、電池組立作業性が悪くなる。However, each of the above-mentioned conventional separators has the following problems. That is, in the case of a separator that does not use a binder, the inorganic powder tends to fall off during battery assembly, so that the assembly workability deteriorates. Further, in a separator in which fibers are combined with each other or fibers and inorganic powder by a water glass-like substance, it is necessary to disperse the fibers in water having a pH of 2.5 to 3.5 for a certain period of time. In addition, the separator is hard and brittle because the water glass-like substance made of an inorganic material is used as a binder, and the battery assembling workability is deteriorated. In addition, in a separator that does not use a polymer flocculant or an inorganic flocculant, the binding strength of the inorganic powder and various fiber materials in water is poor, so that the yield of the inorganic powder to the sheet during papermaking is poor, and severely, 20 to 40% by mass of the used inorganic powder passes through the papermaking wire and flows out into water.
Further, in a separator using a synthetic resin composed of synthetic pulp and synthetic fiber as a binder, the materials are strongly bonded to each other, so that the separator becomes hard as in the case of the above-mentioned separator, and the battery assembling workability deteriorates.
【０００４】[0004]
【課題を解決するための手段】本発明の密閉型鉛蓄電池
用セパレータは、上記従来の問題点を解決するべく、請
求項１記載の通り、微細ガラス繊維と無機粉体を含有し
た無機材料を主体として湿式混抄される密閉型鉛蓄電池
用セパレータにおいて、無機凝集剤を用いて前記無機材
料間を結合したことを特徴とする。また、請求項２記載
の密閉型鉛蓄電池用セパレータは、請求項１記載のセパ
レータにおいて、前記無機凝集剤と共に接着性合成繊維
を併用して前記無機材料間を結合したことを特徴とす
る。また、請求項３記載の密閉型鉛蓄電池用セパレータ
は、請求項１または２記載のセパレータにおいて、前記
無機凝集剤は、硫酸チタニルを主成分としたチタン系無
機凝集剤であることを特徴する。また、請求項４記載の
密閉型鉛蓄電池用セパレータは、請求項２または３記載
のセパレータにおいて、前記接着性合成繊維は、変性ポ
リエステル樹脂、ポリオレフィン系樹脂、アクリル樹
脂、エチレン／ビニルアルコール共重合樹脂から選択さ
れる接着成分を含む単一または複合型の繊維であると共
に、該繊維の１種または２種以上を前記セパレータに対
して５〜３０質量％配合したことを特徴とする。本発明
の密閉型鉛蓄電池用セパレータの製造方法は、請求項５
記載の通り、微細ガラス繊維、無機粉体を含有した無機
材料主体の材料を水中で混合分散した後、無機凝集剤を
含有させた水溶液を添加、混合して抄紙用スラリーを
得、これを抄造、乾燥することを特徴とする。また、請
求項６記載の密閉型鉛蓄電池用セパレータの製造方法
は、微細ガラス繊維、無機粉体を含有した無機材料主体
の材料を接着性合成繊維と共に水中で混合分散した後、
無機凝集剤を含有させた水溶液を添加、混合して抄紙用
スラリーを得、これを抄造後、乾燥、熱処理することを
特徴とする。SUMMARY OF THE INVENTION In order to solve the above-mentioned conventional problems, the sealed lead-acid battery separator according to the present invention comprises an inorganic material containing fine glass fibers and an inorganic powder. In a sealed type lead-acid battery separator that is wet-mixed as a main component, the inorganic material is bonded using an inorganic coagulant. The separator for a sealed lead-acid battery according to a second aspect is characterized in that, in the separator according to the first aspect, the inorganic materials are bonded together using an adhesive synthetic fiber together with the inorganic coagulant. Further, the sealed lead storage battery separator according to claim 3 is the separator according to claim 1 or 2, wherein the inorganic coagulant is a titanium-based inorganic coagulant containing titanyl sulfate as a main component. The sealed lead-acid battery separator according to claim 4 is the separator according to claim 2 or 3, wherein the adhesive synthetic fiber is a modified polyester resin, a polyolefin resin, an acrylic resin, an ethylene / vinyl alcohol copolymer resin. And a single or composite fiber containing an adhesive component selected from the group consisting of: and 5 to 30% by mass of one or more of the fibers based on the separator. The method for producing a separator for a sealed lead-acid battery according to the present invention is described in claim 5.
As described, fine glass fibers and a material mainly composed of an inorganic material containing an inorganic powder are mixed and dispersed in water, and then an aqueous solution containing an inorganic coagulant is added and mixed to obtain a papermaking slurry. And dried. Further, the method for producing a sealed lead-acid battery separator according to claim 6, wherein after mixing and dispersing fine glass fiber, a material mainly composed of an inorganic material containing an inorganic powder in water together with an adhesive synthetic fiber,
An aqueous solution containing an inorganic coagulant is added and mixed to obtain a papermaking slurry, which is formed, dried and heat-treated.
【０００５】[0005]
【発明の実施の形態】本発明は、微細ガラス繊維と、無
機粉体を含有した無機材料を主体として湿式混抄される
密閉型鉛蓄電池用セパレータにおいて、無機凝集剤を使
用するため、無機粉体と各種繊維材料との水中での結合
力が高まり、抄紙時のシートに対する無機粉体の歩留ま
りが向上し、抄紙時に抄造ワイヤーを通過して水中に流
出する無機粉体の量を抑えることができる。BEST MODE FOR CARRYING OUT THE INVENTION The present invention relates to a sealed type lead-acid battery separator which is wet-mixed mainly of an inorganic material containing fine glass fibers and inorganic powder, and uses an inorganic coagulant. Bonding strength of various types of fiber materials with water and the yield of inorganic powder to the sheet during papermaking is improved, and the amount of inorganic powder flowing out of water through a papermaking wire during papermaking can be suppressed. .
【０００６】前記微細ガラス繊維としては、繊維径０．
６〜５μｍの耐酸性ガラス繊維が一般的に適用され、こ
れらの繊維単独又は２種以上を混合することで平均繊維
径０．６〜１．５μｍの範囲で使用される。[0006] As the fine glass fiber, a fiber diameter of 0.
An acid-resistant glass fiber of 6 to 5 μm is generally applied, and these fibers are used alone or in a combination of two or more, and used in a range of an average fiber diameter of 0.6 to 1.5 μm.
【０００７】また、前記無機粉体としては、二酸化珪
素、珪藻土、タルク、マイカ、アルミナ等の耐酸性無機
微粉体の中より選択されるが、不純物が少なく、耐酸性
に優れている点で、二酸化珪素が好ましい。該耐酸性無
機微粉体のセパレータに対する配合量は、１０〜４０質
量％の範囲が一般的であり、１０質量％未満では、無機
粉体を配合したことによる効果が期待できず、また４０
質量％を超えるとセパレータの強度低下が著しいため好
ましくない。The inorganic powder is selected from among acid-resistant inorganic fine powders such as silicon dioxide, diatomaceous earth, talc, mica, and alumina. Silicon dioxide is preferred. The compounding amount of the acid-resistant inorganic fine powder with respect to the separator is generally in the range of 10 to 40% by mass. When the amount is less than 10% by mass, the effect of compounding the inorganic powder cannot be expected.
Exceeding the mass% is not preferred because the strength of the separator is significantly reduced.
【０００８】また、接着性合成繊維の適量を併用した場
合、即ち、接着性合成繊維をセパレータに対して５〜３
０質量％配合した場合は、前記の無機粉体の歩留まり向
上効果に加え、接着性合成繊維の柔軟性と接着性により
材料相互間を適度な結合力で結合できるため、柔軟なセ
パレータとすることができる。尚、接着性合成繊維の配
合量が５質量％未満では無機材料相互間を効果的に結合
できないため、実質的な強度向上効果が得られず、ま
た、３０質量％を超えると電解液の保液性が低下するた
め好ましくない。尚、前記接着性合成繊維としては、変
性ポリエステル樹脂、ポリオレフィン系樹脂、アクリル
樹脂、エチレン／ビニルアルコール共重合樹脂から選択
される接着成分を含む単一または複合型の繊維等が挙げ
られる。Further, when an appropriate amount of the adhesive synthetic fiber is used in combination, that is, the adhesive synthetic fiber is added to the separator by 5 to 3 times.
When 0 mass% is blended, in addition to the effect of improving the yield of the inorganic powder, the flexibility and adhesiveness of the adhesive synthetic fiber allow the materials to be bonded with an appropriate bonding force. Can be. If the amount of the adhesive synthetic fiber is less than 5% by mass, the inorganic materials cannot be effectively bonded to each other, so that a substantial effect of improving the strength cannot be obtained. It is not preferable because the liquid property is reduced. The adhesive synthetic fibers include single or composite fibers containing an adhesive component selected from a modified polyester resin, a polyolefin resin, an acrylic resin, and an ethylene / vinyl alcohol copolymer resin.
【０００９】前記無機凝集剤としては、硫酸チタニルを
主成分としたチタン系無機凝集剤や硫酸アルミニウムを
主成分とした硫酸バンドが使用できるが、過度の使用に
対して電池への影響が少ない点で硫酸チタニルが好適で
ある。また、カチオン性アクリルアミド等の高分子凝集
剤との比較においても過度の使用に対する電池への影響
が少ない点で優れており、無機粉体に対する歩留まり向
上効果についても僅かに高分子凝集剤に劣るものの実質
的に同等の効果を有する。As the inorganic coagulant, a titanium-based inorganic coagulant containing titanyl sulfate as a main component and a sulfuric acid band containing aluminum sulfate as a main component can be used. And titanyl sulfate is preferred. In addition, even in comparison with a polymer flocculant such as a cationic acrylamide, it is excellent in that there is little effect on the battery due to excessive use, and although the yield improvement effect on inorganic powder is slightly inferior to the polymer flocculant, It has substantially the same effect.
【００１０】尚、前記セパレータの製造は、所定量に配
合された、微細ガラス繊維、無機粉体を含有した無機材
料主体の材料を水中で混合分散した後、無機凝集剤を含
有させた水溶液を添加、混合して抄紙用スラリーを得、
これを抄造、乾燥すればよく、接着性合成繊維を含ませ
る場合には、抄造後、乾燥と共に熱処理を行うようにす
るのがよい。The separator is manufactured by mixing and dispersing a material mainly composed of an inorganic material containing fine glass fibers and inorganic powder mixed in a predetermined amount in water, and then adding an aqueous solution containing an inorganic coagulant. Addition and mixing to obtain a papermaking slurry,
This may be paper-formed and dried, and when the adhesive synthetic fiber is included, it is preferable to perform heat treatment together with drying after paper-making.
【００１１】[0011]
【実施例】次に、本発明の実施例を比較例と共に説明す
る。 （実施例１）平均繊維径０．７μｍの耐酸性ガラス繊維
８０部（質量部、以下同じ）と、比表面積２３０ｍ２／
ｇの二酸化珪素２０部を水流型分散機を用いて混合分散
させた後、これに、硫酸チタニル０．２部を含む水溶液
を添加し、１０分間混合して抄紙用スラリーを得た。次
いで、該スラリーを用いて抄造、乾燥し、厚さ１．０ｍ
ｍの密閉型鉛蓄電池用セパレータを得た。Next, examples of the present invention will be described together with comparative examples. (Example 1) 80 parts (parts by mass, the same applies hereinafter) of acid-resistant glass fibers having an average fiber diameter of 0.7 µm, and a specific surface area of 230 m 2 /
g of silicon dioxide (20 parts) was mixed and dispersed using a water jet disperser, and an aqueous solution containing 0.2 parts of titanyl sulfate was added thereto and mixed for 10 minutes to obtain a papermaking slurry. Next, papermaking and drying were performed using the slurry to a thickness of 1.0 m.
m of a sealed lead storage battery was obtained.
【００１２】（実施例２）平均繊維径０．７μｍの耐酸
性ガラス繊維７０部、繊度１．５デニール、長さ５ｍｍ
の変性ポリエステル樹脂を接着成分、ポリエステルを芯
成分とした芯鞘型接着性合成繊維１．０部と、比表面積
２３０ｍ２／ｇの二酸化珪素２０部を水流型分散機を用
いて混合分散させた後、これに、硫酸チタニル０．２部
を含む水溶液を添加し、１０分間混合して抄紙用スラリ
ーを得た。次いで、該スラリーを用いて抄造後、乾燥、
熱処理し、厚さ約１．０ｍｍの密閉型鉛蓄電池用セパレ
ータを得た。Example 2 70 parts of acid-resistant glass fiber having an average fiber diameter of 0.7 μm, a fineness of 1.5 denier, and a length of 5 mm
Of a core-sheath type adhesive synthetic fiber having a modified polyester resin as an adhesive component and polyester as a core component, and 20 parts of silicon dioxide having a specific surface area of 230 m 2 / g were mixed and dispersed by using a water jet disperser. Thereafter, an aqueous solution containing 0.2 parts of titanyl sulfate was added thereto and mixed for 10 minutes to obtain a papermaking slurry. Then, after papermaking using the slurry, drying,
Heat treatment was performed to obtain a sealed lead-acid battery separator having a thickness of about 1.0 mm.
【００１３】（実施例３）平均繊維径０．７μｍの耐酸
性ガラス繊維６０部、繊度１．５デニール、長さ５ｍｍ
の変性ポリエステル樹脂を接着成分、ポリエステルを芯
成分とした芯鞘型接着性合成繊維２０部と、比表面積２
３０ｍ２／ｇの二酸化珪素２０部を水流型分散機を用い
て混合分散させた後、これに、硫酸チタニル０．２部を
含む水溶液を添加し、１０分間混合して抄紙用スラリー
を得た。次いで、該スラリーを用いて抄造後、乾燥、熱
処理し、厚さ約１．０ｍｍの密閉型鉛蓄電池用セパレー
タを得た。Example 3 60 parts of acid-resistant glass fiber having an average fiber diameter of 0.7 μm, a fineness of 1.5 denier, and a length of 5 mm
20 parts of a core-sheath type adhesive synthetic fiber having a modified polyester resin as an adhesive component and polyester as a core component, and a specific surface area of 2
After mixing and dispersing 20 parts of 30 m 2 / g silicon dioxide using a water jet disperser, an aqueous solution containing 0.2 parts of titanyl sulfate was added thereto and mixed for 10 minutes to obtain a papermaking slurry. . Next, the slurry was used for papermaking, dried and heat-treated to obtain a sealed lead-acid battery separator having a thickness of about 1.0 mm.
【００１４】（比較例１）平均繊維径０．７μｍの耐酸
性ガラス繊維７０部、繊度１．５デニール、長さ５ｍｍ
の変性ポリエステル樹脂を接着成分、ポリエステルを芯
成分とした芯鞘型接着性合成繊維１．０部と、比表面積
２３０ｍ２／ｇの二酸化珪素２０部を水流型分散機を用
いて混合分散させた後、分散液のｐＨを３に調整し、１
０分間混合して抄紙用スラリーを得た。次いで、該スラ
リーを用いて抄造後、乾燥、熱処理を行なったが、二酸
化珪素のガラス繊維に対する定着効率が悪いため厚さ
０．８５ｍｍの密閉型鉛蓄電池用セパレータとなった。Comparative Example 1 70 parts of acid-resistant glass fiber having an average fiber diameter of 0.7 μm, a fineness of 1.5 denier, and a length of 5 mm
Of a core-sheath type adhesive synthetic fiber having a modified polyester resin as an adhesive component and polyester as a core component, and 20 parts of silicon dioxide having a specific surface area of 230 m 2 / g were mixed and dispersed by using a water jet disperser. Thereafter, the pH of the dispersion was adjusted to 3 and 1
The mixture was mixed for 0 minutes to obtain a papermaking slurry. Then, the slurry was used for papermaking, and then dried and heat-treated. However, since the fixing efficiency of silicon dioxide to glass fibers was poor, a sealed lead-acid battery separator having a thickness of 0.85 mm was obtained.
【００１５】（比較例２）平均繊維径０．７μｍの耐酸
性ガラス繊維８０部と、比表面積２３０ｍ２／ｇの二酸
化珪素２０部を水流型分散機を用いて混合分散させた
後、１０分間混合して抄紙用スラリーを得た。次いで、
該スラリーを用いて抄造、乾燥を行ったが、比較例１と
同様に、二酸化珪素のガラス繊維に対する定着効率が悪
いため厚さ０．８５ｍｍの密閉型鉛蓄電池用セパレータ
となった。Comparative Example 2 80 parts of acid-resistant glass fiber having an average fiber diameter of 0.7 μm and 20 parts of silicon dioxide having a specific surface area of 230 m 2 / g were mixed and dispersed using a water flow type dispersing machine, and then 10 minutes. The mixture was mixed to obtain a papermaking slurry. Then
Papermaking and drying were performed using the slurry, but as in Comparative Example 1, the efficiency of fixing silicon dioxide to glass fibers was poor, so that a sealed lead storage battery separator having a thickness of 0.85 mm was obtained.
【００１６】（比較例３）平均繊維径０．７μｍの耐酸
性ガラス繊維８０部と、比表面積２３０ｍ２／ｇの二酸
化珪素２０部を水流型分散機を用いて混合分散させた
後、硫酸を添加して分散液のｐＨを３として分子量１０
０万のカチオン性アクリルアミド０．２部を含む水溶液
を添加し、１０分間混合して抄紙用スラリーを得た。次
いで、該スラリーを用いて抄造、乾燥し、厚さ１．０ｍ
ｍの密閉型鉛蓄電池用セパレータを得た。Comparative Example 3 After 80 parts of acid-resistant glass fiber having an average fiber diameter of 0.7 μm and 20 parts of silicon dioxide having a specific surface area of 230 m 2 / g were mixed and dispersed using a water-jet type disperser, sulfuric acid was added. To adjust the pH of the dispersion to 3 and a molecular weight of 10
An aqueous solution containing 0.20 million of cationic acrylamide 0.20 parts was added and mixed for 10 minutes to obtain a papermaking slurry. Next, papermaking and drying were performed using the slurry to a thickness of 1.0 m.
m of a sealed lead storage battery was obtained.
【００１７】実施例１乃至３及び比較例１乃至３で得ら
れた密閉型鉛蓄電池用セパレータの特性を測定し、その
測定結果を表１に示した。The properties of the sealed lead-acid battery separators obtained in Examples 1 to 3 and Comparative Examples 1 to 3 were measured, and the measurement results are shown in Table 1.
【００１８】[0018]
【表１】 [Table 1]
【００１９】表１から明らかなように、実施例１乃至３
の本発明のセパレータでは、硫酸チタニルを主成分とし
たチタン系の無機凝集剤の使用により、無機粉体の歩留
まりは、比較例３（カチオン性ポリアクリルアミド使
用）とほぼ同等の優秀な結果が得られており、また、無
機凝集剤を配合したことにより得られた無機材料相互間
の緩い結合により、電池組立時のセパレータからの無機
粉体の脱落が抑制されている。また、抄紙時のｐＨを中
性域としているため、水ガラス状物質による無機材料相
互間の強い結合がないことから、圧縮時相対厚さは８３
％と小さく、セパレータが軟らかいことを示している。
さらに、接着性合成繊維を配合した実施例２及び３のセ
パレータでは、該繊維の柔軟性と接着性により材料相互
間が適度な結合力で結合されていることから、脆さの改
善が図れ、強度の強い柔軟なセパレータとなっている。As is clear from Table 1, Examples 1 to 3
In the separator of the present invention, the use of a titanium-based inorganic coagulant containing titanyl sulfate as a main component provided excellent results in the yield of inorganic powder, which were almost equal to those of Comparative Example 3 (using cationic polyacrylamide). In addition, the loose bonding between the inorganic materials obtained by blending the inorganic coagulant prevents the inorganic powder from falling off from the separator during battery assembly. Further, since the pH at the time of papermaking is in the neutral range, there is no strong bond between inorganic materials due to the water glass-like substance.
%, Which indicates that the separator is soft.
Furthermore, in the separators of Examples 2 and 3 in which the adhesive synthetic fiber was blended, the brittleness was improved because the materials were bonded with an appropriate bonding force due to the flexibility and adhesiveness of the fiber, It is a strong and flexible separator.
【００２０】[0020]
【発明の効果】以上説明したように、本発明は、微細ガ
ラス繊維と、無機粉体を含有した無機材料を主体として
湿式混抄される密閉型鉛蓄電池用セパレータにおいて、
無機凝集剤を使用するため、無機粉体と各種繊維材料と
の水中での結合力が高まり、抄紙時のシートに対する無
機粉体の歩留まりが向上し、抄紙時に抄造ワイヤーを通
過して水中に流出する無機粉体の量を抑えることができ
る。さらに、該無機凝集剤に起因した無機材料相互間の
緩い結合によりセパレータからの無機粉体の脱落が抑制
され、しかもセパレータは硬くならぬため、電池組立作
業性の向上を図ることができる。また、接着性合成繊維
の適量を併用した場合、即ち、接着性合成繊維を５〜３
０質量％配合した場合は、前記の無機粉体の歩留まり向
上効果に加え、接着性合成繊維の柔軟性と接着性により
材料相互間を適度な結合力で結合できることから脆さの
改善が図れ、強度の強い柔軟なセパレータとすることが
できる。このように本発明の密閉型鉛蓄電池用セパレー
タを電池に適用すれば、電池組立が容易となり、また、
セパレータに配合した無機粉体が電池使用時に生ずる短
絡を抑制するため電池寿命延長の効果を有する。As described above, the present invention relates to a sealed type lead-acid battery separator which is wet-mixed mainly with fine glass fibers and an inorganic material containing inorganic powder.
The use of an inorganic coagulant increases the bonding strength between inorganic powder and various fiber materials in water, improves the yield of inorganic powder on the sheet during papermaking, and flows out through the papermaking wire during papermaking. The amount of the inorganic powder to be formed can be suppressed. Furthermore, the loose bonding between the inorganic materials caused by the inorganic coagulant prevents the inorganic powder from falling off from the separator, and the separator does not become hard, so that the battery assembly workability can be improved. When an appropriate amount of the adhesive synthetic fiber is used in combination, that is, when the adhesive synthetic fiber is 5 to 3
In the case where 0% by mass is blended, in addition to the effect of improving the yield of the inorganic powder, the brittleness can be improved because the flexibility and adhesiveness of the adhesive synthetic fiber enable bonding between materials with an appropriate bonding force, A strong and flexible separator can be obtained. If the sealed lead storage battery separator of the present invention is applied to a battery as described above, battery assembly becomes easy, and
The inorganic powder blended in the separator has the effect of extending the battery life because it suppresses short circuits that occur when the battery is used.
フロントページの続き (72)発明者 清水 真琴 岐阜県不破郡垂井町630 日本無機株式会 社垂井工場内 Ｆターム(参考） 5H021 BB08 BB11 CC02 EE02 EE22 EE32 HH01 5H028 AA05 BB06 CC08 EE04 EE06 HH01 Continued on the front page (72) Inventor Makoto Shimizu 630 Tarui-cho, Fuwa-gun, Gifu F-term in the Nippon Inorganic Company, Ltd. Tarui Plant (reference) 5H021 BB08 BB11 CC02 EE02 EE22 EE32 HH01 5H028 AA05 BB06 CC08 EE04 EE06 HH01
Claims (6)
無機材料を主体として湿式混抄される密閉型鉛蓄電池用
セパレータにおいて、無機凝集剤を用いて前記無機材料
間を結合したことを特徴とする密閉型鉛蓄電池用セパレ
ータ。1. A sealed lead-acid battery separator wet-mixed mainly with fine glass fibers and an inorganic material containing an inorganic powder, wherein the inorganic materials are bonded using an inorganic coagulant. For sealed lead-acid batteries.
併用して前記無機材料間を結合したことを特徴とする請
求項１記載の密閉型鉛蓄電池用セパレータ。2. The sealed lead-acid battery separator according to claim 1, wherein the inorganic materials are bonded together using an adhesive synthetic fiber together with the inorganic coagulant.
分としたチタン系無機凝集剤であることを特徴とする請
求項１または２記載の密閉型鉛蓄電池用セパレータ。3. The sealed lead storage battery separator according to claim 1, wherein the inorganic coagulant is a titanium-based inorganic coagulant containing titanyl sulfate as a main component.
ル樹脂、ポリオレフィン系樹脂、アクリル樹脂、エチレ
ン／ビニルアルコール共重合樹脂から選択される接着成
分を含む単一または複合型の繊維であると共に、該繊維
の１種または２種以上を前記セパレータに対して５〜３
０質量％配合したことを特徴とする請求項２または３記
載の密閉型鉛蓄電池用セパレータ。4. The adhesive synthetic fiber is a single or composite type fiber containing an adhesive component selected from a modified polyester resin, a polyolefin resin, an acrylic resin, and an ethylene / vinyl alcohol copolymer resin. One or two or more kinds of fibers are used in an amount of 5 to 3 with respect to the separator.
4. The separator for a sealed lead-acid battery according to claim 2, wherein 0% by mass is blended.
機材料主体の材料を水中で混合分散した後、無機凝集剤
を含有させた水溶液を添加、混合して抄紙用スラリーを
得、これを抄造、乾燥することを特徴とする密閉型鉛蓄
電池用セパレータの製造方法。5. A material mainly composed of an inorganic material containing fine glass fibers and inorganic powder is mixed and dispersed in water, and then an aqueous solution containing an inorganic coagulant is added and mixed to obtain a papermaking slurry. A method for producing a separator for a sealed lead-acid battery, wherein the separator is made and dried.
機材料主体の材料を接着性合成繊維と共に水中で混合分
散した後、無機凝集剤を含有させた水溶液を添加、混合
して抄紙用スラリーを得、これを抄造後、乾燥、熱処理
することを特徴とする密閉型鉛蓄電池用セパレータの製
造方法。6. A papermaking slurry comprising mixing and dispersing an inorganic material-based material containing fine glass fibers and inorganic powder together with an adhesive synthetic fiber in water, adding and mixing an aqueous solution containing an inorganic coagulant. A method for producing a separator for a sealed lead-acid battery, comprising the steps of: drying the paper;
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001008851A JP2002216733A (en) | 2001-01-17 | 2001-01-17 | Separator for sealed lead-acid battery and manufacturing method for it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001008851A JP2002216733A (en) | 2001-01-17 | 2001-01-17 | Separator for sealed lead-acid battery and manufacturing method for it |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002216733A true JP2002216733A (en) | 2002-08-02 |
Family
ID=18876411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001008851A Withdrawn JP2002216733A (en) | 2001-01-17 | 2001-01-17 | Separator for sealed lead-acid battery and manufacturing method for it |
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| Country | Link |
|---|---|
| JP (1) | JP2002216733A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7144633B2 (en) | 2002-07-29 | 2006-12-05 | Evanite Fiber Corporation | Glass compositions |
| US7160824B2 (en) | 2002-07-29 | 2007-01-09 | Evanite Fiber Corporation | Glass compositions |
| WO2013168755A1 (en) * | 2012-05-09 | 2013-11-14 | 日立化成株式会社 | Separator for electrochemical element and fabrication method for same |
| JP2016072105A (en) * | 2014-09-30 | 2016-05-09 | パナソニックＩｐマネジメント株式会社 | Lead storage battery |
| WO2016121511A1 (en) * | 2015-01-27 | 2016-08-04 | 日立化成株式会社 | Lead storage cell separator and lead storage cell |
| JP2018022661A (en) * | 2016-08-05 | 2018-02-08 | 三井化学株式会社 | Lithium ion secondary battery separator, positive electrode material for lithium ion secondary batteries, and lithium ion secondary battery |
-
2001
- 2001-01-17 JP JP2001008851A patent/JP2002216733A/en not_active Withdrawn
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7144633B2 (en) | 2002-07-29 | 2006-12-05 | Evanite Fiber Corporation | Glass compositions |
| US7160824B2 (en) | 2002-07-29 | 2007-01-09 | Evanite Fiber Corporation | Glass compositions |
| US8012629B2 (en) | 2002-07-29 | 2011-09-06 | Hollingsworth & Vose Company | Batteries containing bismuth glass compositions |
| US8211575B2 (en) | 2002-07-29 | 2012-07-03 | Hollingsworth & Vose Company | Batteries containing bismuth glass compositions |
| US7939166B2 (en) | 2004-07-21 | 2011-05-10 | Hollingsworth & Vose Company | Glass compositions |
| WO2013168755A1 (en) * | 2012-05-09 | 2013-11-14 | 日立化成株式会社 | Separator for electrochemical element and fabrication method for same |
| CN104272503A (en) * | 2012-05-09 | 2015-01-07 | 日立化成株式会社 | Separator for electrochemical element and fabrication method for same |
| JP2016072105A (en) * | 2014-09-30 | 2016-05-09 | パナソニックＩｐマネジメント株式会社 | Lead storage battery |
| WO2016121511A1 (en) * | 2015-01-27 | 2016-08-04 | 日立化成株式会社 | Lead storage cell separator and lead storage cell |
| JPWO2016121511A1 (en) * | 2015-01-27 | 2017-11-02 | 日立化成株式会社 | Lead-acid battery separator and lead-acid battery |
| JP2018022661A (en) * | 2016-08-05 | 2018-02-08 | 三井化学株式会社 | Lithium ion secondary battery separator, positive electrode material for lithium ion secondary batteries, and lithium ion secondary battery |
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