Fuser coating composition and method of manufacture
The present teachings include a coating composition of a powder of fluorine containing particles, aerogel particles and poly(alkylene carbonate). A method of making a fuser member and the fuser member resulting therefrom is also provided.
1. A method of making a fuser member, comprising:
obtaining a fuser member comprising a resilient layer disposed on a substrate;
spray coating a powder comprising a composition of fluorine containing particles, aerogel particles and poly(alkylene carbonate) on the resilient layer to form a coated layer;
heating the coated layer to a temperature of from about 300° C. to about 380° C. wherein the poly(alkylene carbonate) decomposes and a release layer is formed.
2. The method of claim 1 wherein the fluorine containing particles comprise a material selected from the group consisting polytetrafluoroethylene; perfluoroalkoxy polymer resin; copolymers of tetrafluoroethylene and hexafluoropropylene; copolymers of hexafluoropropylene and vinylidene fluoride; terpolymers of tetrafluoroethylene, vinylidene fluoride, and hexafluoropropylene; tetrapolymers of tetrafluoroethylene, vinylidene fluoride, and hexafluoropropylene, and mixtures thereof.
3. The method of claim 1 , wherein the poly(alkylene carbonate) comprises poly(propylene carbonate), poly(ethylene carbonate), poly(butylene carbonate), poly(cyclohexene carbonate) or mixtures thereof.
4. The method of claim 1 , wherein the poly(alkylene carbonate) has a molecular weight (Mw) ranging from about 10,000 to about 800,000.
5. The method of claim 1 , wherein the poly(alkylene carbonate) has a decomposition temperature ranging from about 200° C. to about 340° C.
6. The method of claim 1 wherein the composition further comprises fillers selected from the group consisting of carbon blacks, carbon nanotubes, graphite, graphene, metal oxides, doped metal oxides, polyanilines, polythiophenes, polyacetylene, poly(p-phenylene vinylene), poly(p-phenylene sulfide), pyrroles, polyindole, polypyrene, polycarbazole, polyazulene, polyazepine, poly(fluorine), polynaphthalene, salts of organic sulfonic acid, ammonium or phosphonium salts, and mixtures thereof.
7. The method of claim 1 , wherein the release layer comprises a thickness of from about 5 microns to about 250 microns.
8. The method of claim 1 wherein the resilient layer comprises a material selected from the group consisting of silicone rubbers, high temperature vulcanization silicone rubbers, low temperature vulcanization silicone rubbers, liquid silicone rubbers and siloxanes.
9. The method of claim 1 , wherein the aerogel particles comprise a material selected from the group consisting of silica, carbon, alumina, titania and zirconia.
10. The method of claim 1 , wherein the aerogel particles comprises a surface area of from about 400 m 2 /g to about 1200 m 2 /g.
11. The method of claim 1 , wherein the aerogel particles comprise a particle size of from about 1 μm to about 100 μm.