ECTFE

ECTFE - Ethylenechlorotrifluoroethylene

Ethylenechlorotrifluoroethylene (ECTFE) is a thermoplastic fluoropolymer with a unique chemical structure. As a copolymer, it has a reciprocal arrangement of ethylene and chlorotrifluoroethylene. This material is particularly suitable for applications where extreme chemical resistance is required under high temperatures (e.g., free chlorine in the medium and 98% sulfuric acid).

General properties:

Excellent chemical resistance even against free chlorine and ozone
Very good surface quality (low roughness)
Resistant to temperatures from -70 ° C to 150 ° C (depending on the type of stress)
Good radiation resistance
Good mechanical properties
Physiological harmlessness, high purity
Excellent abrasion resistance
Good weldability

Application areas:

Semiconductor manufacturing
chemical plants
apparatebau
Cleanroom applications (eg photovoltaics)
Heat exchangers (eg in pickling plants and similar)
Linings of steel or concrete tanks, concrete pipes as sewage pipes in concentrated sewage water, for corrosion protection

Product range:

Pipes
Fittings for butt and IR welding
Valves also for chemical scaling
Semi-finished products
Welding technology

Advantages when using ECTFE pipes and parts:

Easy installation thanks to the use of IR and butt welding
Suitable for use in many aggressive media
Flame retardant according to UL 94-V0
Delivery program for pipes and moldings available

Pressure table in bar for ECTFE (SDR 21) according to ISO 12162 with a safety factor of 1.6

Behavior in case of radiation exposure

ECTFE has good resistance to UV and gamma irradiation and has excellent aging resistance. Since it is a translucent material, the media are exposed to UV radiation.

Physiological harmlessness

According to "BgVV", ECTFE is suitable for the safe use of objects which are intended for repeated contact with foodstuffs. In order to prevent any odor and taste influences, it is advisable to clean the ECTFE parts in contact with foodstuffs with water.

Propagation of microorganisms on ECTFE

The surface of ECTFE forms an unfavorable substrate for the propagation of microorganisms as well as glass. This is the conclusion of an investigation carried out as part of the ECTFE review on HP fitness. Due to this property, ECTFE is used in the food industry and can also be used in the ultrapure water range.

Chemical Resistance

ECTFE has excellent resistance to most inorganic and organic chemicals as well as solvents. So far, no solvent is known that attacks ECTFE below 120 ° C or leads to cracking. Only the contact with chlorinated solvents leads to a slight swelling. ECTFE should not be used for molten alkali metals or hot amines (such as aniline, dimethylamine). A major advantage compared to other thermoplastics is the chemical resistance of ECTFE to chlorine and chlorine compounds even at higher temperatures.