JPS63122521A - Joining method for cation exchange film - Google Patents
Joining method for cation exchange filmInfo
- Publication number
- JPS63122521A JPS63122521A JP61268524A JP26852486A JPS63122521A JP S63122521 A JPS63122521 A JP S63122521A JP 61268524 A JP61268524 A JP 61268524A JP 26852486 A JP26852486 A JP 26852486A JP S63122521 A JPS63122521 A JP S63122521A
- Authority
- JP
- Japan
- Prior art keywords
- cation exchange
- joining
- porous polytetrafluoroethylene
- exchange membrane
- specific
- 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
- 238000005341 cation exchange Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 22
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 24
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 24
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 24
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000003729 cation exchange resin Substances 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 239000012528 membrane Substances 0.000 claims description 26
- 239000011148 porous material Substances 0.000 claims description 10
- ABDBNWQRPYOPDF-UHFFFAOYSA-N carbonofluoridic acid Chemical group OC(F)=O ABDBNWQRPYOPDF-UHFFFAOYSA-N 0.000 claims description 5
- 239000002759 woven fabric Substances 0.000 claims description 5
- UQSQSQZYBQSBJZ-UHFFFAOYSA-N fluorosulfonic acid Chemical group OS(F)(=O)=O UQSQSQZYBQSBJZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 239000011347 resin Substances 0.000 abstract description 11
- 229920005989 resin Polymers 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 5
- 230000002209 hydrophobic effect Effects 0.000 abstract description 2
- 238000005470 impregnation Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 5
- 239000002585 base Substances 0.000 description 4
- 210000004027 cell Anatomy 0.000 description 3
- 238000005342 ion exchange Methods 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003014 ion exchange membrane Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 229910001514 alkali metal chloride Inorganic materials 0.000 description 1
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 150000004702 methyl esters Chemical class 0.000 description 1
- 210000001724 microfibril Anatomy 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
- B29C66/727—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being porous, e.g. foam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/43—Joining a relatively small portion of the surface of said articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
- B29K2027/12—Use of polyvinylhalogenides or derivatives thereof as moulding material containing fluorine
- B29K2027/18—PTFE, i.e. polytetrafluorethene, e.g. ePTFE, i.e. expanded polytetrafluorethene
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野コ
本発明は、陽イオン交換膜を使用目的に応じた大きさ、
形状にする為に用いる接合方法に関するものである。[Detailed Description of the Invention] [Industrial Fields of Use] The present invention is directed to the use of cation exchange membranes that
It relates to the joining method used to form the shape.
［従来の技術］
陽イオン交換膜を、上述した目的で、接合する際には、
従来から、加熱接合法が使用されている。これらは加熱
プレス方式、ヒートシール方式４インパルスシ一ラ一方
式等で、ＩＩｇどうしを直ちに重ね合わせて接合（重ね
合わせ接合）、あるいは対向する辺どうしを、突き合わ
せた後、別に用意した帯状の陽イオン交換膜をこの部分
に相方均等にオーバーラツプさせた後、接合する（付き
合わせ接合）方法が一般的であった０例えば、一方の面
はパーフルオロカルボン醜基で、他方の面はパーフルオ
ロスルホン酸基からなる陽イオン交換膜を接合する実用
的方法としては、特開昭５８−２０４０２９ ｒ ｌ
イオン交換膜の接合方法」、特開昭５８−２０４０３Ｏ
ｒ膜の接合方法」等の提案で示されている。[Prior Art] When bonding cation exchange membranes for the above-mentioned purpose,
Conventionally, thermal bonding methods have been used. These methods include heat press method, heat seal method, 4-impulse sealer method, etc., and the IIg pieces are immediately overlapped and bonded (overlap bonding), or the opposing sides are butted together and then a separately prepared band-shaped anode is used. The common method was to overlap the ion-exchange membranes evenly on this part and then bond them (butt-joining). A practical method for bonding cation exchange membranes consisting of acid groups is disclosed in JP-A-58-204029 r l
“Method for joining ion exchange membranes”, JP-A-58-20403O
``Method for bonding r-films.''
［発明の解決しようとする問題点］
従来接合部材としては、接合される水膜と同様のポリマ
ー構造を有する導電且つ透水性の陽イオン交換樹脂製で
ある事が、必要とされていたのに対し１本発明では多孔
性ポリテトラフルオロエチレン樹脂シートが、接合され
る事を見出したものである。[Problems to be solved by the invention] Conventionally, joining members were required to be made of a conductive and water-permeable cation exchange resin having a polymer structure similar to that of the water film to be joined. On the other hand, in the present invention, it has been discovered that porous polytetrafluoroethylene resin sheets can be joined.
［問題点を解決するための手段］
零発ＩＪＩＪは、接合部材として、ポリテトラフルオロ
エチレン樹脂の多孔質シートが陽イオン交換膜と、接合
可能である事を見い出したものであり、本発明は、陽イ
オン交換膜を接合するに際し、多孔度３０〜８５％、平
均孔径０．１〜３０ル厘、膜厚１００〜１０００ ｇ
ｍ 、単位面積当りの重量５０〜３５０ｇ／ｍ２ 、破
断強度１．５〜１０ｋｇ／ｃｍ巾からなる疎水性の多孔
性ポリテトラフルオロエチレンシートを接合部材とする
事を特徴とする陽イオン交換膜の接合方法にある。[Means for Solving the Problems] Zero-generation IJIJ has discovered that a porous sheet of polytetrafluoroethylene resin can be bonded to a cation exchange membrane as a bonding member, and the present invention , when bonding a cation exchange membrane, the porosity is 30-85%, the average pore diameter is 0.1-30 l, and the membrane thickness is 100-1000 g.
m, a weight per unit area of 50 to 350 g/m2, a breaking strength of 1.5 to 10 kg/cm, and a cation exchange membrane characterized in that the bonding member is a hydrophobic porous polytetrafluoroethylene sheet of width 1.5 to 10 kg/cm. It's in the joining method.
本発明の接合方法を第１図から第６図を用いて説明する
。The joining method of the present invention will be explained using FIGS. 1 to 6.
第１図は、フィンガー型電解槽に用いる袋状陽イオン交
換膜を示し、第２図は、第１図のＡ部の部分拡大図であ
る。第３図は接合部の模式図であり、突き合わせた陽イ
オン交換膜と、これに均等にオーバーラツプさせた帯状
の接合部材２からなる。第４図は陽イオン交換膜どうし
を重ね合わせて接合するものであるが、接合補助材３を
用いている。第５図は、突き合わせ接合の接合部材とし
て、多孔性ポリテトラフルオロエチレンシート４を用い
たものであり、第６図も同様に重ね合わせ接合補助材と
して多孔性ポリテトラフルオロエチレンシート４を用い
たものである。FIG. 1 shows a bag-shaped cation exchange membrane used in a finger-type electrolytic cell, and FIG. 2 is a partially enlarged view of section A in FIG. 1. FIG. 3 is a schematic diagram of the joint, which consists of abutted cation exchange membranes and a band-shaped joint member 2 overlapping them evenly. In FIG. 4, cation exchange membranes are overlapped and bonded, and a bonding aid 3 is used. Figure 5 shows a case in which a porous polytetrafluoroethylene sheet 4 is used as a joining member for butt jointing, and Figure 6 similarly uses a porous polytetrafluoroethylene sheet 4 as an auxiliary material for lap jointing. It is something.
本発明において、多孔性ポリテトラフルオロエチレンシ
ートが陽イオン交換膜を接合させる機構は、多孔性ポリ
テトラフルオロエチレンシートの微細な孔内へ、加熱さ
れて流動性を持った陽イオン交換樹脂が、含浸流入し、
いわゆるアンカー効果によって接合するものと考えられ
る。In the present invention, the mechanism by which the porous polytetrafluoroethylene sheet joins the cation exchange membrane is that the heated and fluidized cation exchange resin is inserted into the fine pores of the porous polytetrafluoroethylene sheet. impregnation inflow;
It is thought that the bonding occurs due to the so-called anchor effect.
本発明において用いられる多孔性ポリテトラフルオロエ
チレンシートとしては、平均孔径０．１〜３０μｍ、好
ましくは １〜５ル量である事が好ましい、 ＩＩＬ
ｍ以下の孔径では、樹脂が流入し難くなり、３０体１以
上では、アンカー効果を発現すべき、樹脂流入部の表面
積が得られにくくなり、孔径が小さすぎても大きすぎて
も接合力が低くなる。又、多孔度は３０〜８５％、好ま
しくは７０〜８０％が適当である。多孔度が３０％以下
になると、アンカー効果を発現すべき、樹脂流入する孔
が少なくなり、９５％以上となると、多孔性シートが腰
がなくなり、接合工程に、シートが容易につぶれてしま
う事により十分な接合力が得られない、膜厚は１００〜
１０００ｇｍ 、好ましくは１５０〜４００ ＪＬ■の
範囲に制御すべきである。 １００ 井層以下になると
、取扱いし難くなり、又、１０００ｐ以上になると、接
合面に十分な圧力と熱がか−り難くなり、十分な接合力
が得られにくい所為である。又、接合補助部材として、
破断強度１．５ｋｇ／ｃ＋ｓ巾以上、好ましくは２〜ｌ
ｏｋｇ／ｃ■巾の範囲の強度を有し、接合部の強度低下
を防ぐことが必要である。The porous polytetrafluoroethylene sheet used in the present invention preferably has an average pore diameter of 0.1 to 30 μm, preferably 1 to 5 μm.
If the pore diameter is less than 1.2 m, it will be difficult for the resin to flow in, and if the pore diameter is 30 or more, it will be difficult to obtain the surface area of the resin inflow part that should produce an anchor effect, and if the pore diameter is too small or too large, the bonding force will be It gets lower. Further, the appropriate porosity is 30 to 85%, preferably 70 to 80%. When the porosity is less than 30%, there are fewer pores for the resin to flow in, which should produce an anchor effect, and when it is more than 95%, the porous sheet loses its stiffness and is easily crushed during the joining process. Therefore, sufficient bonding force cannot be obtained, and the film thickness is 100~
It should be controlled within the range of 1000 gm, preferably 150-400 JL. If the thickness is less than 100p, it becomes difficult to handle, and if it exceeds 1000p, it becomes difficult to apply sufficient pressure and heat to the bonding surface, making it difficult to obtain sufficient bonding force. Also, as a joining auxiliary member,
Breaking strength: 1.5 kg/c+s width or more, preferably 2 to 1
It is necessary to have a strength in the range of 0 kg/cm width and to prevent the strength of the joint from decreasing.
さらに本発明においては、多孔性ポリテトラフルオロエ
チレンシートを、２０〜４００Ｄｅ 、 好ましくは５
０〜２０（ＩＯ＋ｓ 、 １０〜１００本／インチ、好
ましくは２０〜５０本／インチのポリテトラフルオロエ
チレンの織布をａＲさせて裏うちした複合体として用い
ることもできる。これは、多孔性ポリテトラフルオロエ
チレンシート単体よりも十分な強度が得られることによ
るものである。従って、上述した織布で、予めこのシー
トを補強し破断強度を向上させておく、この織布の構成
は、この補強効果と、補強シートの作成上の制限による
ものである。この補強された多孔性ポリテトラフルオロ
エチレンシート複合体は、３〜２０ｋｇ／ｃｍ ｌわの
破断強度を持つことができる。Furthermore, in the present invention, the porous polytetrafluoroethylene sheet has a density of 20 to 400 De, preferably 5
It can also be used as a composite made by backing a polytetrafluoroethylene woven fabric with a density of 0 to 20 (IO+s, 10 to 100 pieces/inch, preferably 20 to 50 pieces/inch). This is due to the fact that sufficient strength can be obtained compared to a single tetrafluoroethylene sheet. Therefore, the structure of this woven fabric is such that the sheet is reinforced with the above-mentioned woven fabric in advance to improve its breaking strength. This reinforced porous polytetrafluoroethylene sheet composite can have a breaking strength of 3 to 20 kg/cm l.
又１本発明に適用される陽イオン交換膜としては、パー
フルオロカルボン酸基、又はパーフルオロスルホン酸基
、又は一方の面はパーフルオロカルボン酸基で、他方の
面はパーフルオロスルホン酸基を有する陽イオン交換膜
であって、その膜自体を、ポリテトラフルオロエチレン
織布や、混線繊維化されたポリテトラエチレンのミクロ
フィブリル等で補強してあっても、未補強膜であっても
差支えはない、又、イオン交換基の末端基としては酸型
、又はエステル型である事が適当であるが、これらに限
定されるものではない。In addition, the cation exchange membrane applied to the present invention has a perfluorocarboxylic acid group, a perfluorosulfonic acid group, or a perfluorocarboxylic acid group on one side and a perfluorosulfonic acid group on the other side. The membrane itself may be reinforced with polytetrafluoroethylene woven fabric, cross-wired polytetraethylene microfibrils, etc., or it may be unreinforced. Furthermore, the terminal group of the ion exchange group is suitably an acid type or an ester type, but is not limited to these.
さらに本発明で適用する接合の方法としては、加熱圧着
出来る装置が適当であり、加熱温度３０〜３５０℃、よ
り好ましくは１５０〜３００℃の範囲が適用できる。加
熱温度は、多孔性ポリテトラフルオロエチレンの孔内へ
、陽イオン交換樹脂を流入させるだけ樹脂の粘度を低下
させる事が目的である。 ８０℃以下では、十分な樹脂
粘度低下がなく、 ３５０℃以上では、樹脂自体の分解
、イオン交換基の破壊が起る。圧力は、０．１〜５０ｋ
ｇ／ｃｍ２、より女子ましくは １〜４０ｋｇ／ｃｍ２
の範囲が採用出来る。 ０．１ｋｇ／ｃｍ２以下にな
ると、十分な押し付は安定性が得られない、又、５０ｋ
ｇ／ｃｍ２以上になると、樹脂粘度が低下するより以前
に多孔性ポリテトラフルオロエチレンシートが押しつぶ
されて、適正な多孔度が変わってしまうため、好ましく
ない。Further, as the bonding method applied in the present invention, a device capable of heat-pressing is suitable, and a heating temperature range of 30 to 350°C, more preferably 150 to 300°C can be applied. The purpose of the heating temperature is to lower the viscosity of the resin enough to allow the cation exchange resin to flow into the pores of the porous polytetrafluoroethylene. At temperatures below 80°C, there is no sufficient reduction in resin viscosity, and at temperatures above 350°C, the resin itself decomposes and the ion exchange groups are destroyed. Pressure is 0.1~50k
g/cm2, more feminine 1-40kg/cm2
A range of can be adopted. If it is less than 0.1kg/cm2, sufficient pressing stability cannot be obtained, and 50k
If it exceeds g/cm2, the porous polytetrafluoroethylene sheet will be crushed before the resin viscosity decreases, and the appropriate porosity will change, which is not preferable.
［実施例］
実施例１
イオン交換容量１．２５ｍｅｑ／Ｈのイオン交換容量を
有するパーフルオロカルボン酸（末端基はメチルエステ
ル）の表面を、陰極サイドに持つ陽イオン交換膜（厚み
２４０４ ｍ）を重ね合わせ接合する為に、多孔度８０
％、平均孔径２ｐｍ 、単位面積当りの重量１５０ｇｒ
ｓ／ｍ２ 、引張強度５．０ｋｇ／Ｃ＋Ｓ巾からなる多
孔性ポリテトラフルオロエチレン樹脂シートを、界面に
配置し、第６図に示す構成とした。[Example] Example 1 A cation exchange membrane (thickness: 2404 m) having a surface of perfluorocarboxylic acid (terminal group is methyl ester) on the cathode side, which has an ion exchange capacity of 1.25 meq/H, was prepared. Porosity 80 for overlapping bonding
%, average pore diameter 2pm, weight per unit area 150gr
A porous polytetrafluoroethylene resin sheet having a width of s/m2 and a tensile strength of 5.0 kg/C+S was placed at the interface to form the structure shown in FIG.
これを幅１０ｍｍ 、厚み０．１５ｍｍのリボジ状ヒー
ターを有するインパルスシーラーにて、２２０℃Ｘ １
ｋｇ／ｃｍ２Ｘ １分が熱シールした後、これを５０℃
になる迄加圧冷却した。This was heated at 220°C x 1 using an impulse sealer equipped with a ribbed heater with a width of 10mm and a thickness of 0.15mm.
kg/cm2X After heat sealing for 1 minute, heat seal at 50℃.
It was cooled under pressure until it became .
上述の方法で得られた接合部を有する袋状陽イオン交換
膜を陽イオン交換樹脂層の末端基がＮａ”イオンになる
陽に加水分解した後、フィンガー型電解槽で陽極室２０
０ｇｒ＋／文の塩化アルカリ金属水溶液、陰極側３５ｗ
ｔ％の水酸化アルカリ金属水溶液で電流密度２０アンペ
ア／ｄｍ２で運転しているが、接合部になんらの異常も
認められなかった。After the bag-like cation exchange membrane having the joints obtained by the above method is hydrolyzed into a cation in which the end groups of the cation exchange resin layer become Na'' ions, it is placed in an anode chamber 20 in a finger-type electrolytic cell.
0gr+/m alkali metal chloride aqueous solution, cathode side 35w
Although the device was operated with a t% alkali metal hydroxide aqueous solution at a current density of 20 amperes/dm2, no abnormality was observed in the joint.
第１図は、フィンガー型電解槽に用いる袋状陽イオン交
換＋１ｉを示す０図中１は陽イオン交換膜母材である。
第２図は、第１図“Ａ”部の部分拡大図である０図中２
は、母材を接合する補助部材である。第３図は、接合部
の模式図であり、突き合わせた母材ｌと、これに均等に
オーバーラツプさせた接合補助部材２とからなる。
第４図は、母材端を重ね合わせて接合するものであるが
、中間に接合補助部材３を用いている。第５図は、突き
合わせ接合の補助部材として、多孔性ポリテトラフルオ
ロエチレンシート４を使用したものであり、第６図は１
重ね合わせ接合の補助部材として、多孔性ポリテトラフ
ルオロエチレンシート４を使用したものである。FIG. 1 shows a bag-shaped cation exchange +1i used in a finger-type electrolytic cell. 1 in FIG. 0 is a cation exchange membrane base material. Figure 2 is a partially enlarged view of section "A" in Figure 1.
is an auxiliary member for joining base materials. FIG. 3 is a schematic diagram of the joint, which consists of abutted base materials 1 and a joining auxiliary member 2 that evenly overlaps them. In FIG. 4, the ends of the base materials are overlapped and joined, and a joining auxiliary member 3 is used in the middle. Fig. 5 shows a porous polytetrafluoroethylene sheet 4 used as an auxiliary member for butt jointing, and Fig. 6 shows a porous polytetrafluoroethylene sheet 4 used as an auxiliary member for butt joining.
A porous polytetrafluoroethylene sheet 4 is used as an auxiliary member for overlapping and joining.
Claims (4)
９５％、平均孔径６．１〜３０μｍ、膜厚１００〜１０
００μｍ、単位面積当りの重量５０〜３５０ｇ／ｍ＾２
、破断強度１．５ｋｇ／ｃｍ巾以上からなる多孔性ポリ
テトラフルオロエチレンシートを接合部材とする事を特
徴とする陽イオン交換膜の接合方法。(1) When joining the cation exchange membrane, the porosity is 30~
95%, average pore diameter 6.1-30 μm, film thickness 100-10
00μm, weight per unit area 50-350g/m^2
A method for joining cation exchange membranes, characterized in that a porous polytetrafluoroethylene sheet having a width at break of 1.5 kg/cm or more is used as a joining member.
〜４００Ｄｅ、１０〜１００本／インチのポリテトラフ
ルオロエチレン製織布で裏うちされた複合体からなる特
許請求の範囲第１項記載の陽イオン交換膜の接合方法。(2) 20 porous polytetrafluoroethylene sheets
A method for joining a cation exchange membrane according to claim 1, comprising a composite lined with a polytetrafluoroethylene woven fabric of ~400 De and 10 to 100 pieces/inch.
酸基又はパーフルオロスルホン酸基、又は一方の面はパ
ーフルオロカルボン酸基 で、他方の面はパーフルオロスルホン酸基からなる陽イ
オン交換膜、又は表面及び内部が親水化された多孔体層
と陽イオン交換樹脂層との積層膜である陽イオン交換膜
である事を特徴とする特許請求の範囲第１項又は第２項
記載の陽イオン交換膜の接合方法。(3) The cation exchange membrane to be joined is a perfluorocarboxylic acid group or a perfluorosulfonic acid group, or a cation exchange membrane consisting of a perfluorocarboxylic acid group on one side and a perfluorosulfonic acid group on the other side, Or, the cation exchange membrane according to claim 1 or 2, which is a cation exchange membrane that is a laminated membrane of a porous layer whose surface and inside are made hydrophilic and a cation exchange resin layer. How to join exchange membranes.
〜３５０℃、圧力０．１〜５０ｋｇ／ｃｍ＾２で接合す
る事を特徴とする特許請求の範囲第１項、 第２項又は第３項記載の陽イオン交換膜の接合方法。(4) The joining method is a heat compression bonding method, and the heating
A method for bonding cation exchange membranes according to claim 1, 2, or 3, characterized in that the bonding is performed at ~350°C and a pressure of 0.1~50 kg/cm^2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61268524A JPS63122521A (en) | 1986-11-13 | 1986-11-13 | Joining method for cation exchange film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61268524A JPS63122521A (en) | 1986-11-13 | 1986-11-13 | Joining method for cation exchange film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63122521A true JPS63122521A (en) | 1988-05-26 |
Family
ID=17459718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61268524A Pending JPS63122521A (en) | 1986-11-13 | 1986-11-13 | Joining method for cation exchange film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63122521A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009142814A (en) * | 2009-01-22 | 2009-07-02 | Asahi Glass Co Ltd | Fluorine-containing cation exchange membrane |
| WO2014133099A1 (en) * | 2013-02-28 | 2014-09-04 | ニチアス株式会社 | Article having fluororesin joint, and method for producing such article |
| CN111793229A (en) * | 2019-04-09 | 2020-10-20 | 辽宁格瑞帕洛孚新能源有限公司 | Solution film forming apparatus and method |
-
1986
- 1986-11-13 JP JP61268524A patent/JPS63122521A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009142814A (en) * | 2009-01-22 | 2009-07-02 | Asahi Glass Co Ltd | Fluorine-containing cation exchange membrane |
| WO2014133099A1 (en) * | 2013-02-28 | 2014-09-04 | ニチアス株式会社 | Article having fluororesin joint, and method for producing such article |
| JPWO2014133099A1 (en) * | 2013-02-28 | 2017-02-02 | ニチアス株式会社 | Articles including joints of fluororesin and method for producing the same |
| US9797536B2 (en) | 2013-02-28 | 2017-10-24 | Nichias Corporation | Article having fluororesin joint, and method for producing such article |
| CN111793229A (en) * | 2019-04-09 | 2020-10-20 | 辽宁格瑞帕洛孚新能源有限公司 | Solution film forming apparatus and method |
| CN111793229B (en) * | 2019-04-09 | 2022-10-11 | 辽宁格瑞帕洛孚新能源有限公司 | Solution film forming apparatus and method |
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