WATER VAPOR SELECTION PERMEABLE TUBE

PROBLEM TO BE SOLVED: To provide a water vapor selection permeable tube which can sufficiently reduce a bend radius and has high resistance to a repeating bending and stretching stress.SOLUTION: A water vapor selection permeable tube contains a fluorine-based cation exchange resin (A) having a catio...

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Hauptverfasser:	IYA TAKESHI, SAITO TAKAHIRO
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION THEIR PREPARATION OR CHEMICAL WORKING-UP THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a water vapor selection permeable tube which can sufficiently reduce a bend radius and has high resistance to a repeating bending and stretching stress.SOLUTION: A water vapor selection permeable tube contains a fluorine-based cation exchange resin (A) having a cation exchange group and a fluororubber (B), where the fluororubber (B) has a volume change ratio when held in sodium hydroxide 20 mass% aqueous solution at 100°C for 3 days measured according to JIS K6258:2003 of less than 40%, and a ratio (B)/[(A)+(B)] of the mass of the fluororubber (B) to the total mass of the fluorine-based cation exchange resin (A) and the fluororubber (B) is 15-70 mass%.SELECTED DRAWING: None 【課題】曲げ半径を充分に小さくすることができ、かつ、繰り返しの曲げ伸ばし応力に対する耐性が高い水蒸気選択透過性チューブを提供する。【解決手段】陽イオン交換基を有するフッ素系陽イオン交換樹脂（Ａ）とフッ素ゴム（Ｂ）を含み、前記フッ素ゴム（Ｂ）は、ＪＩＳＫ６２５８：２００３に準拠して測定した水酸化ナトリウム２０質量％水溶液に１００℃で３日間保持した際の体積変化率が４０％未満であり、前記フッ素系陽イオン交換樹脂（Ａ）と前記フッ素ゴム（Ｂ）の合計質量に対する前記フッ素ゴム（Ｂ）の質量の割合（Ｂ）／［（Ａ）＋（Ｂ）］が１５〜７０質量％である水蒸気選択透過性チューブ。【選択図】なし