Lubricious, wear resistant surface coating by plasma polymerization
US6506457B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 30, 2001 |
| Grant date | Jan 14, 2003 |
| Priority date | — |
| Expiry date | Mar 30, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05D2201/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The present methods provide an amorphous, conformal, protective, abrasion-resistant, lubricious fluoropolymer coating on to a polymer substrate via a gas plasma deposition method. The coating method, according to one embodiment of the method, involves generating a gas plasma by introducing a mixture of a fluorinated gas monomer and a hydrocarbon gas into an energetic ion field, such as an ion beam or the field produced by a radio-frequency source. The fluorinated gas monomer is selected from the group consisting of CF.sub.4, C.sub.2 F.sub.4, C.sub.2 F.sub.6, CF.sub.3.sub.2CO, CH.sub.2 CF.sub.2 and mixtures of the foregoing. The hydrocarbon gas is selected from the group consisting of C.sub.2 H.sub.2, C.sub.2 H.sub.4, C.sub.2 H.sub.6, and H.sub.2 and mixtures of the foregoing. The polymer substrate is exposed to the foregoing gas plasma for sufficient time to achieve the desired coating thickness.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.