haoyunzz9
2009- 9- 8, 05:23 AM
PTFE which made PTFE lined valve (http://www.corrosion-resistant-valves.com/corrosion-resistant-pipe-fitting.html) is a fluorocarbon solid, as it is a high molecular weight compound consisting wholly of carbon and fluorine. Neither water and water-containing substances nor oil and oil-containing substances are wet by PTFE, as fluorocarbons demonstrate mitigated London dispersion forces due to the high electronegativity of fluorine