Professional Perfluorosulfonic Acid and Carboxylic Acid Composite Ion Exchange Membrane manufacturer in China

chlor-alkali membrane

For production of chlorine and caustic(Sodium hydroxide NaOH, potassium hydroxide KOH, sodium hypochlorite,and so on) by electrolysis, we develop Sulfonate layer and Carboxylate layer ion exchange membrane SY28 series which are widely used in chlor-alkali industries, electro-dialysis, recovery of copper from etching solutions, synthesis for gold potassium cyanide , chlorine dioxide, and electrochemical reaction for amino acid. The membrane performs as a conducting separator and solid electrolyte in a variety of electrochemical cells which require the membrane to selectively transport cations across the cell junction.
The structure is as follow:

chlor-alkali membrane

Lab performance of the membrane


Current density (kA/m2)

Cell voltage (V)

Cl2 purity (%)





Remarks: All test performed in lab cells with 50cm2 effective area, at 3.5 or 4.5kA/m2 current density, 32% NaOH, 205g/L NaCl concentration (outlet), 85-90℃ electrolyte temperature, 1mm electrode gap and activated cathode.


chlor-alkali membrane is suitable for production of caustic soda NaOH, potassium hydroxide KOH, sodium hypochlorite and other caustic.
chlor-alkali membrane is used for electrolytic chlorine dioxide generator, etching solution recovery copper, gold salt preparation, amino acid refining, electrodialysis and other electrolytic industries.
chlor-alkali membrane has higher tolerance to salt water impurities

Order and Packaging Information:

Standard size: 1500*2460 mm
The membrane for cut pieces will depend on the size and quantity of the customer’s order requirements. The membrane pieces or rolls can be cut to non-standard sizes, please contact our sales staff for details and availability.

Our Mission

Continuously provide the Ion-Exchange Membrane with lower energy consumption and excellent performance for Green Energy and Electrodialysis Industries
Continuously improve the technology of environmentally friendly

Contact Us

 Dongfeng Street, Weifang Shandong China

 (0086) 536-821-6345