Lubricant Deposition Process
Original Publication Date: 1984-Oct-01
Included in the Prior Art Database: 2005-Feb-05
Thermally stable fluoro ethylene oligomers of low molecular weight can be deposited by evaporation to yield films that can be melted and recrystallized and which impart lubricating qualities to the surfaces upon which they are deposited. We have vapor deposited a commercially available low molecular weight (3,500) fluoroethylene oligomers (VYDAX AR*). We have discovered that we can thermally evaporate this low molecular weight PTFE without observing decomposition. We have also coevaporated PTFE and polyethylene (PE) polymers to produce films which are molecularly dispersed and which do not exhibit a phase separation at room temperature. By this process of coevaporation of two normally immiscible polymers we can control the physical properties of these films.