ECTFE (Ethylene chlorotrifluoroethylene) is a fluorocarbon based polymer (a fluoropolymer), a kind of plastic. It is marketed under the brand name Halar ECTFE by Solvay Solexis. Solvay Solexis is the only producer of Halar.
ECTFE has excellent chemical resistance against hydrogen fluoride and ozone gas and, in addition, has excellent flame resistance, surface smoothness, film hardness, film strength, and low permeability
PHYSICAL AND CHEMICAL PROPERTIES
It offers high impact strength, chemical and corrosion resistance over a wide temperature range — typically -76°C to +150°C. It has high resistivity and low dielectric constant.
ECTFE is used to minimize wear in high-friction applications, where dimensional stability is a requirement.
ECTFE, a copolymer of ethylene and chlorotrifluoroethylene, is a semi-crystalline melt process able partially fluorinated polymer. It is available in different grades that are specifically designed for electrostatic powder coating.
MARKET APPLICATION :
Typical applications served by Halar® ECTFE include those in contact with highly corrosive or ultrapure chemicals such as strong inorganic bases and strong mineral and oxidizing acids including:
Pharma & Chemical Industry
Exhaust Duct Coatings
Halar® ECTFE coated stainless steel exhaust duct systems are designed to handle a wide range of corrosive exhaust streams found in a variety of industrial applications, including clean rooms.
Outperform plastic and FRP duct with improved safety and corrosion resistance
Reduction or elimination of the buildup of salt deposits and debris that can reduce airflow approved by Factory Mutual for use in fume and smoke exhaust systems, without sprinklers.
High Purity Applications
Static soak testing conducted on ECTFE in ultrapure water and high purity chemicals shows extremely low levels of metallic and organic extractable. Additional dynamic rinse data validates ECTFE as suitable for high purity systems in the semiconductor, biotech and pharmaceutical industries. ECTFE exhibits very low fluoride ion leach out.
Fluid Handling Systems
Delivery, storage, filtration and processing are some of the steps integral to a fluid handling system. Fluoropolymers, thanks to their superior capabilties to withstand extreme chemicals and temperatures, are widely in use in semiconductor operations.Key features
Case History :
Very good chemical and thermal resistance
Optimum permeation resistance
Outstanding flame resistance
Very good surface characteristics
2.3 mm ECTFE + FRVS, SO2 quench tower 1.9m Diam x 8.9m Ht exported to client where technology provider was Heldor Topse. The design temperature for the same was 120 Deg C, in service since 2009.
2.3 mm ECTFE lining on MS filter for severe application. 2.3 mm ECTFE + FRVS, 200 Liter storage tank of 0.6m Diam x 0.7 m Ht for storage of Ammonia Bifluoride @ 90 Deg C in 2005 & 2006