Ethylenechlorotrifluoroethylene ECTFE

ECTFE is a 1 1 alternating copolymer of ethylene and chlorotrifluoroethylene having a chemical structure as follows  

This chemical structure provides the polymer with a unique combination of properties. It possesses excellent chemical resistance from cryogenic to 340°F (117°C) with continuous service to 300°F (149°C) and excellent abrasion resistance. It is sold under the tradename of Halar by Ausimont U.S.A. 

ECTFE s resistance to permeation by oxygen, carbon dioxide, chlorine gas, or hydrochloric acid is 10-100 times better than that of PTFE or FEP. Water absorption is less than 0.01%. 

The chemical resistance of ECTEE is outstanding. It is resistant to most of the common corrosive chemicals encountered in industry. Included in this 

Some halogenated solvents can cause ECTFE to become slightly plasticized when it comes into contact with them. Under normal circumstances, that does not impair the usefulness of the pol)nner. When the part is removed from contact with the solvent and allowed to dry, its mechanical properties return to their original values, indicating that no chemical attack has taken place. As with other fluoropolymers, ECTEE will be attacked by metallic sodium and potassium. 

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Halar ECTFE (ethylenechlorotrifluoroethylene) This material is an alternating copolymer of ethylene and chlorotrifluroethylene. This fluoropolymer withstands continuous exposure to extreme temperatures and maintains excellent mechanical properties across this entire range (from cryogenic temperatures to 180°C). It has excellent electrical properties and chemical resistance, having no known solvent at 121°C. It is also nonbuming and radiation-resistant. Its ease of processing affords a wide range of products. 

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