Methods of making a mixture for a PTFE membrane with metal oxides, and compositions related thereto
View Patent ↗Method for making a mixture used in the production of a polytetrafluoroethylene (PTFE) membrane including metal oxide(s). The mixture includes PTFE resin, a lubricating agent, and a metal oxide. The mixture may be further processed to form a PTFE membrane.
1. A composition comprising:
a polytetrafluoroethylene resin;
a lubricating agent comprising an isoparaffinic solvent; and
a metal oxide;
wherein a weight of the lubricating agent comprises between 15 and 25 percent of a weight of the polytetrafluoroethylene resin;
wherein a weight of the metal oxide comprises up to 10 percent of the weight of the polytetrafluoroethylene resin; and
wherein the metal oxide is selected from the group consisting of magnesium oxide and silver oxide; and
wherein the metal oxide has at least one dimension less than 100 nm and has a specific surface area greater than 50 m 2 /g.
2. The composition of claim 1 , wherein the metal oxide comprises silver oxide.
3. The composition of claim 1 , wherein the metal oxide comprises magnesium oxide.
4. The composition of claim 1 , wherein the metal oxide has at least one dimension less than 50 nm and has a specific surface area greater than 90 m 2 /g.