The company can look back on more than 10 years’ experience in membrane production and membrane separation technology. Of particular benefit to the dynamic team at FuMA-Tech, is the long-standing experience of its highly qualified personnel in all fields of polymer chemistry, membrane manufacture as well as in industrial plant construction.
FuMA-Tech Products and Services
From a technological viewpoint, FuMA-Tech ranks as the leading manufacturer of ion exchange membranes, having comprehensive skills that range from the synthesis of raw and auxiliary materials, to the conversion of these materials to membranes and finally to their application in industrial membrane separation plants.
Polymer synthesis, manufacturing experience in film and membrane production as well as the reliable operation of these membranes in industrial products have provided the know-how for the development and serial production of proton-conductive membranes for all known polymer electrolyte membrane fuel cells. Due to the in-house coating plants for continuous membrane production, FuMA-Tech is well equipped, even today, as a supplier of membranes for operations at pilot and industrial level. The main area of FuMA-Tech’s competence lies at the heart of the fuel cell, namely the proton-conductive membrane, fumapem®. As the sole supplier worldwide, FuMA-Tech currently offers a range of highly efficient fuel cell membranes based on conventional fluorocarbon polymers fumion® F as well as on newly developed, modern, recyclable hydrocarbon polymer compounds fumion® P.
FuMA-Tech Anion and Cation Membranes
FuMA-Tech supplies cation and anion exchange membranes for all known applications while various special membranes are also available. The fumasep® FAA membrane is characterized by high alkali resistance. The fumasep® FAP membrane can be recommended for use in acidic solutions (pH<3.5) as well as in the presence of chlorine or other oxidative media.
The fumasep® FKH membrane is based on a perfluorosulfonic acid resin fumion® F and is available in various ion exchange capacities. The membrane is reinforced mechanically with a cloth, either in the form of a multi-filament glass fibre cloth or a monofilament polyether ketone cloth.
FuMA-Tech Bipolar Membranes
For electrodialysis with bipolar membranes, we supply the patented multi-layer membrane fumasep® FBM which has been tested in many applications. Good electrochemical properties as well as high mechanical stability makes this product attractive.
After the take-over of the Aqualytics company (NJ, USA), this membrane underwent further improvement and the selectivity of the individual layers was optimized further for the production of acids and bases.
Introduction of Fumasep FKL-PK-130 Cation Exchange Membrane
General
Membrane type: Cation-exchange membrane - PK-reinforced - thickness 130 µm - with high hydroxyl blocking capability, high selectivity, high mechanical stability, and high stability in acidic and caustic environment.
Application: Process for concentrating alkaline solutions, electrodialysis and electrodialysis with bipolar membranes.
Stability range: Stable under acidic and caustic conditions at T = 25 °C.
Delivery: The membrane is the brown foil delivered in dry form.
Handling and Storage
Keep membrane package closed / sealed when unused. Store, handle and process the membrane in a clean and dust-free area. Use only new and sharp knives or blades, when cutting the membrane.
Always wear protective gloves when handling the membrane. Handle with care, be sure not to puncture, crease or scratch the membrane, otherwise leaks will occur. All surfaces in contact with the membrane during handling, inspection, storage and mounting must be smooth and free of sharp projections.
Wet form: Storage for short and medium time scale (hours up to several weeks) may be done in unsealed containers in 0.5 – 1.5 wt% NaCl solution or comparable neutral pH electrolytes. For storage over a longer time period a sealed container is recommended using afore said electrolyte with biocide to avoid biological fouling.
Pretreatment
Membranes are delivered in Na+ form and dry form. Additional cleaning is required by rinsing the membrane either in the application solution or a NaCl solution according to the application requirement. Do not let the membrane dry out since micro-cracks may likely occur during drying.
If you have any concerns about storage, chemical stability, and pretreatment please feel free to contact us for further information.
Caution: Fumatech membranes are highly sensitive to differences in humidity and moisture content. Therefore the membranes can vary +/- 0.5cm from the original cut sizes. Also due to this sensitivity the manufacturer expects wrinkles to form, however soaking the membranes in deionized water will return the membranes to the full size planar state according to the manufacturer.