Polytetrafluor ethylene

At times, particularly with amorphous materials, the term electret is used instead of piezoelectric to describe a material the term was introduced as an electric counterpart to the magnet, defined as all materials that are able to retain at least a quasi-permanent electric polarization within and perhaps trap charge on the surface (or within in a porous material). Polytetrafluor-ethylene (PTFE) is a powerful electret material. The critical difference among the terms is that electrets retain polarization in thermod3mamic wowequilibrium, pyroelectric materials retain polarization in equilibrium, ferroelectrics permit... 

LNP Corp. Thermocomp Xydar +150 polytetrafluor-ethylene (antifriction) ... 

This elastomer is sold under the trade name Tefzel by DuPont. ETFE is a modified partially fluorinated copolymer of ethylene and polytetrafluor-oethylene (PTFE). Since it contains more than 75% TEE by weight, it has better resistance to abrasion and cut-through than TEE while retaining most of the corrosion resistance properties. 

Davies J, Nunnerley CS, Brisley AC, Edwards JC, Finlayson SD (1996) Use of dynamic contact angle profile analysis in studying the kinetics of protein removal from steel, glass, polytetrafluor-oethylene, polypropylene, ethylene-propylene rubber, and silicone surfaces. J Colloid Interface Sci 182 437-443... 

Fluorocarbon resin n. Any of a family of thermoplastics chemically similar to the polyolefins, with all the hydrogen atoms replaced by fluorine. They are made by addition polymerization from olefinic monomers composed only of fluorine and carbon. The main members of the family are polytetrafluor-oethylene, fluorinated ethylene-pro-pylene resin, and polyhexafluoropropylene. 

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