JPH0570262B2 - - Google Patents
Info
- Publication number
- JPH0570262B2 JPH0570262B2 JP59249639A JP24963984A JPH0570262B2 JP H0570262 B2 JPH0570262 B2 JP H0570262B2 JP 59249639 A JP59249639 A JP 59249639A JP 24963984 A JP24963984 A JP 24963984A JP H0570262 B2 JPH0570262 B2 JP H0570262B2
- Authority
- JP
- Japan
- Prior art keywords
- acid
- synthetic fibers
- separator
- weight
- 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.)
- Expired - Lifetime
Links
- 229920002994 synthetic fiber Polymers 0.000 claims description 21
- 239000012209 synthetic fiber Substances 0.000 claims description 21
- 239000003365 glass fiber Substances 0.000 claims description 14
- 239000002253 acid Substances 0.000 claims description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 8
- 229910021417 amorphous silicon Inorganic materials 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 239000007788 liquid Substances 0.000 description 13
- 238000010521 absorption reaction Methods 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 7
- 230000014759 maintenance of location Effects 0.000 description 6
- 239000000835 fiber Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229920002972 Acrylic fiber Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
- H01M50/446—Composite material consisting of a mixture of organic and inorganic materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2300/00—Electrolytes
- H01M2300/0002—Aqueous electrolytes
- H01M2300/0005—Acid electrolytes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Cell Separators (AREA)
Description
産業上の利用分野
本発明は密閉型鉛蓄電池に使用するセパレータ
ーに関するものである。
本発明のセパレーターは、その素材に特徴を有
するものであり、その素材は製紙技術を応用して
製造されるから、本発明は製紙産業においても利
用される。
従来の技術
密閉型鉛蓄電池に使用するセパレーターに必要
な特性としては、
(1) 厚さのバラツキが少ないこと
(2) 引張強さが大きいこと
(3) 最大孔径が小さいこと
(4) 保液性が良いこと
(5) 吸液速度が速いこと
(6) 電気抵抗値が低いこと
(7) 耐酸化寿命が長いこと
などが要求されるが、これらの特性の中で、保液
性がよいことおよび吸液速度が速いことが重要で
ある。従来、保液性および吸液速度は、構成され
たセパレーターシートの毛細管現象の発生の良否
によるものと考えられているため、この種のセパ
レーターとしては平均直径が5μｍ以下の微細ガ
ラス繊維を主体としてセパレーターシートを構成
したものが大部分である。また、耐酸性合成繊維
と微細ガラス繊維とを混合してシートとしたもの
もあるが、これは、微細ガラス繊維を主体として
親水性でない合成繊維を混抄しているため、地合
が悪く、保液性、吸液性が微細ガラス繊維のみの
ものと比較して悪いという欠点を有している。ま
た、これらのセパレーターは高価な微細ガラス繊
維を使用しているので、
(1) 製造原価が極めて高いので、小型電池分野に
しか利用できない、
(2) 機械的強度が弱いため電池生産方式を自由に
選べない、
などの欠点を有している。
発明が解決しようとする問題点
本発明は、従来の技術の問題点を解決すること
を目的とするものである。すなわち、本発明で
は、
(1) 保液性、吸液性向上のために使用する高価な
微細ガラス繊維（平均直径5μｍ以下）を使用
しない。
(2) 抄紙分散性が悪く、シート状での引張強度が
弱いガラス繊維主体ではなく、親水化処理をし
た合成繊維主体の配合とする。
(3) 平均直径が5μｍより太い安価なガラス繊維
および合成繊維を使用するために生ずる毛細管
現象の発生の不足を、含水無晶形酸化ケイ素お
よびコウ解性合成繊維の使用により解決する。
問題点を解決するための手段
本発明においては、上記の目的を達成するため
に、
(1) 抄紙分散性が悪く、シート状での引張強度が
弱いガラス繊維主体ではなく、親水化処理をし
た合成繊維主体の配合とする。
(2) 平均直径が5μｍより太い安価なガラス繊維
および合成繊維を使用するために生ずる毛細管
現象の発生の不足を、含水無晶形酸化ケイ素お
よびコウ解性合成繊維の使用により解決した。
すなわち本発明は、(1)平均直径が5μｍより太
いガラス繊維、親水化処理した耐酸性合成繊維お
よび含水無晶形酸化ケイ素からなり、前記合成繊
維の少なくとも10重量％がコウ解性合成繊維であ
る配合原料を抄紙して製造された素材をもつて形
成された密閉型鉛蓄電池セパレーターである。
本発明の実施態様としては、平均直径が5μｍ
より太い、好ましくは平均直径6μｍ〜10μｍのガ
ラス繊維を10〜30重量％、親水化処理した耐酸性
合成繊維を40〜80重量％および含水無晶形酸化ケ
イ素を10〜40重量％の割合で使用することができ
る。
本発明で使用する、親水化処理した耐酸性合成
繊維とは、抄紙に於る繊維の水分散性を改善する
ために、界面活性剤等で親水化した合成繊維であ
り、例えば帝人株式会社のポリエステル繊維
TM04N等である。同様の親水化処理された、耐
酸性合成繊維としてはポリエチレン繊維、ポリア
クチル繊維等が使用できる。又こう解性合成繊維
とは、木材パルプと同様にこう解機でフイプリル
化できる合成繊維であり、例えば旭化成工業株式
会社のアクリル繊維A104等である。
更に添料等の歩留向上剤（ポリアクリルアミド
系樹脂）を添加しても良い。
実施例
本発明をさらに理解しやすくするために、以下
に実施例と比較例を示すが、本発明は下記の実施
例だけに限られるものではない。
INDUSTRIAL APPLICATION FIELD The present invention relates to a separator used in sealed lead-acid batteries. The separator of the present invention is characterized by its material, and since the material is manufactured by applying paper manufacturing technology, the present invention can also be used in the paper manufacturing industry. Conventional technology The characteristics required for separators used in sealed lead-acid batteries are: (1) Small variation in thickness (2) High tensile strength (3) Small maximum pore diameter (4) Liquid retention (5) High liquid absorption rate (6) Low electrical resistance (7) Long oxidation resistance life, etc. Among these characteristics, good liquid retention is required. It is important that the liquid absorption rate is high. Conventionally, liquid retention and liquid absorption speed are thought to depend on the quality of capillary action in the constructed separator sheet. Therefore, this type of separator mainly consists of fine glass fibers with an average diameter of 5 μm or less. Most of them are made up of separator sheets. There is also a sheet made by mixing acid-resistant synthetic fibers and fine glass fibers, but since these sheets are mainly made of fine glass fibers and non-hydrophilic synthetic fibers, they have poor texture and are not easy to maintain. It has the disadvantage that its liquid properties and absorbency are poorer than those made only of fine glass fibers. In addition, these separators use expensive fine glass fibers, so (1) the manufacturing cost is extremely high, so they can only be used in the field of small batteries, and (2) their mechanical strength is weak, so they can be used freely in battery production methods. It has disadvantages such as not being able to be selected. Problems to be Solved by the Invention The present invention aims to solve the problems of the prior art. That is, in the present invention, (1) expensive fine glass fibers (average diameter of 5 μm or less) used to improve liquid retention and absorption properties are not used. (2) Instead of mainly glass fibers, which have poor paper dispersibility and low tensile strength in sheet form, the blend should be mainly synthetic fibers that have been treated to make them hydrophilic. (3) The lack of capillary action caused by the use of inexpensive glass fibers and synthetic fibers with an average diameter larger than 5 μm is solved by the use of hydrous amorphous silicon oxide and decomposable synthetic fibers. Means for Solving the Problems In the present invention, in order to achieve the above objectives, (1) instead of using glass fiber as the main material, which has poor paper dispersibility and low tensile strength in sheet form, the present invention uses hydrophilic-treated Contains mainly synthetic fibers. (2) The lack of capillary action caused by the use of inexpensive glass fibers and synthetic fibers with an average diameter larger than 5 μm was solved by using hydrous amorphous silicon oxide and decomposable synthetic fibers. That is, the present invention provides (1) a glass fiber having an average diameter of more than 5 μm, a hydrophilic acid-resistant synthetic fiber, and a hydrous amorphous silicon oxide, and at least 10% by weight of the synthetic fiber is a decomposable synthetic fiber. This is a sealed lead-acid battery separator made from a material made by paper-making the blended raw materials. In an embodiment of the invention, the average diameter is 5 μm.
Use 10 to 30% by weight of thicker glass fibers, preferably with an average diameter of 6 μm to 10 μm, 40 to 80% by weight of acid-resistant synthetic fibers treated to make them hydrophilic, and 10 to 40% by weight of hydrated amorphous silicon oxide. can do. The hydrophilic acid-resistant synthetic fiber used in the present invention is a synthetic fiber that has been made hydrophilic with a surfactant or the like in order to improve the water dispersibility of the fiber in paper making. polyester fiber
TM04N etc. Similar acid-resistant synthetic fibers that have been subjected to hydrophilic treatment include polyethylene fibers, polyactyl fibers, and the like. Furthermore, the decomposable synthetic fiber is a synthetic fiber that can be fipullated using a decomposer like wood pulp, such as acrylic fiber A104 manufactured by Asahi Kasei Corporation. Furthermore, a retention aid such as an additive (polyacrylamide resin) may be added. Examples In order to make the present invention easier to understand, Examples and Comparative Examples are shown below, but the present invention is not limited to the following Examples.
【表】
上記の原料を使用して公知の湿式抄紙法によつ
てセパレーター用シートを製造した。得られたセ
パレーター用シートの特性値を下記の第１表に示
す。[Table] A separator sheet was manufactured using the above raw materials by a known wet papermaking method. The characteristic values of the obtained separator sheet are shown in Table 1 below.
【表】
上記の第１表に示された測定結果により、本発
明のセパレーターは、現在使用されている比較例
のセパレーターよりも引張強さが強く、吸液速度
も速いことがわかる。さらにシリカを使用しない
比較例のセパレーターよりも吸液速度が速く、吸
液速度の改善効果が大きいことが実証された。
発明の効果
本発明によれば、次の効果が得られる。
(1) 製造原価が安い。
(2) 保液性と吸液性が良好である。
(3) 広範囲の電池生産方式を可能にする強度およ
び加工性を有する。
(4) 大型の密閉型鉛蓄電池の製造を可能にする。[Table] The measurement results shown in Table 1 above show that the separator of the present invention has higher tensile strength and faster liquid absorption rate than the separator of the comparative example currently in use. Furthermore, the liquid absorption rate was faster than that of the comparative separator that did not use silica, and it was demonstrated that the effect of improving the liquid absorption rate was large. Effects of the Invention According to the present invention, the following effects can be obtained. (1) Manufacturing costs are low. (2) Good liquid retention and liquid absorption properties. (3) It has the strength and processability to enable a wide range of battery production methods. (4) Enables the production of large sealed lead-acid batteries.
Claims (1)
化処理した耐酸性合成繊維および含水無晶形酸化
ケイ素からなり、前記合成繊維の少なくとも10重
量％がコウ解性合成繊維である配合原料を抄紙し
て製造された素材をもつて形成された密閉型鉛蓄
電池用セパレーター。 ２ 平均直径が5μｍより太いガラス繊維が10〜
30重量％、親水化処理した耐酸性合成繊維が40〜
80重量％、含水無晶形酸化ケイ素が10〜40重量％
である配合原料を抄紙した特許請求の範囲第１項
に記載の密閉型鉛蓄電池用セパレーター。[Claims] 1. A composition consisting of glass fibers with an average diameter of more than 5 μm, acid-resistant synthetic fibers treated to make them hydrophilic, and hydrated amorphous silicon oxide, and at least 10% by weight of the synthetic fibers is decomposable synthetic fibers. A separator for sealed lead-acid batteries made from a material made from paper. 2 Glass fibers with an average diameter thicker than 5μm are 10~
30% by weight, acid-resistant synthetic fibers treated to make them hydrophilic, 40~
80% by weight, 10-40% by weight of hydrous amorphous silicon oxide
A separator for a sealed lead-acid battery according to claim 1, which is made of paper made from a blended raw material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59249639A JPS61128459A (en) | 1984-11-28 | 1984-11-28 | Separator for sealed lead-acid battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59249639A JPS61128459A (en) | 1984-11-28 | 1984-11-28 | Separator for sealed lead-acid battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61128459A JPS61128459A (en) | 1986-06-16 |
| JPH0570262B2 true JPH0570262B2 (en) | 1993-10-04 |
Family
ID=17196009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59249639A Granted JPS61128459A (en) | 1984-11-28 | 1984-11-28 | Separator for sealed lead-acid battery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61128459A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7144633B2 (en) | 2002-07-29 | 2006-12-05 | Evanite Fiber Corporation | Glass compositions |
| BRPI0313075A2 (en) | 2002-07-29 | 2017-05-02 | Evanite Fiber Corp | glass compositions |
| JP2005108617A (en) * | 2003-09-30 | 2005-04-21 | Nippon Sheet Glass Co Ltd | Separator for lead storage battery |
| JP2008002295A (en) * | 2006-06-20 | 2008-01-10 | Daikyo Nishikawa Kk | Seal structure of rotary valve |
| WO2012105190A1 (en) * | 2011-02-01 | 2012-08-09 | パナソニック株式会社 | Lead storage battery |
| US10177360B2 (en) | 2014-11-21 | 2019-01-08 | Hollingsworth & Vose Company | Battery separators with controlled pore structure |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5297131A (en) * | 1976-02-12 | 1977-08-15 | Toray Industries | Separator for battery |
| JPS5744969A (en) * | 1980-06-30 | 1982-03-13 | Texon Inc | Material for battery separator |
-
1984
- 1984-11-28 JP JP59249639A patent/JPS61128459A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5297131A (en) * | 1976-02-12 | 1977-08-15 | Toray Industries | Separator for battery |
| JPS5744969A (en) * | 1980-06-30 | 1982-03-13 | Texon Inc | Material for battery separator |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61128459A (en) | 1986-06-16 |
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