Patent
US 9,394,421METHOD OF MANUFACTURE FOR GRAPHENE FLUOROPOLYMER DISPERSION
Qi Zhang
US
Copyright © 2026 Matter42. All rights reserved.
Patent
Atlas literature
Patent
US 9,394,421Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG 1 is a flow chart of the process m accordance with the present teach ings [0012] It should be noted that some details of the figures have been simp li fied and are drawn to faci li tate understand in g of the embodiments rather than to ma intain st ric t structural accuracy, detail, and scale
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A method making a coating dispersion comprising: mixing graphene particles, a fluorosilane coupling agent and a first solvent to produce a first dispersion wherein the graphene particles comprise from about 0.1 to about 0.8 weight percent of the first dispersion; concentrating the first dispersion by removing the first solvent to produce a concentrated dispersion wherein the graphene particles comprise from about 2.0 to about 10.0 weight percent of the concentrated dispersion; mixing the concentrated dispersion with a fluoropolymer particle dispersion comprising a second solvent, a surfactant, and fluoropolymer particles wherein the fluoropolymer particle dispersion has a solids content of about 30 weight percent to about 50 weight percent to form a second dispersion; and adding polymer binder in a third solvent to the second dispersion to form the coating dispersion wherein the coating dispersion has a viscosity of from about centipoise to about 200 centipoise.
The method of claim 1, wherein the first solvent is selected from the group consisting of. ketones, amides, sulfoxides, alcohols, ethers, esters, hydrocarbons and chlorinated hydrocarbons. 14/044,190 3
The method of claim 1, wherein the second solvent is selected from the group consisting of: ketones, amides, sulfoxides, alcohols, ethers, esters, hydrocarbons and chlorinated hydrocarbons.
The method of claim 1, wherein the third solvent is selected from the group consisting of: ketones, amides, sulfoxides, alcohols, ethers, esters, hydrocarbons and chlorinated hydrocarbons.
The method of claim 1, wherein the surfactant is selected from the group consisting of: poly(fluoroacrylate)-graft-poly(methyl methacrylate), fluorinated acrylate copolymer with pendant glycol groups, fluorinated acrylate copolymer with pendant perfluoroalkyl sulfonate groups and polyether copolymers with pendant trifluoroethoxy groups.
The method of claim 1, wherein the fluoropolymer particles comprise particles selected from the group consisting of: polytetrafluoroethylene (PTFE); perfluoroalkoxy polymer resin (PFA); copolymers of tetrafluoroethylene (TFE) and hexafluoropropylene (H FP); copolymers of two of vinylidenefluoride, hexafluoropropylene, and tetrafluoroethylene; terpolymers of vinylidenefluoride, hexafluoropropylene and tetrafluoroethylene; and tetrapolymers of vinylidenefluoride, hexafluoropropylene, tetrafluoroethylene, and a cure site monomer.
The method of claim 1, wherein the fluoropolymer particles are selected from the group consisting of: copolymers of two of vinylidenefluoride, hexafluoropropylene, and 14/044,190 4 tetrafluoroethylene; terpolymers of vinylidenefluoride, hexafluoropropylene, and tetrafluoroethylene; and tetrapolymers of vinylidenefluoride, hexafluoropropylene, tetrafluoroethylene, and a cure site monomer.
The method of claim 1, wherein the fluorosilane coupling agent is seleceted from the group consisting of: (3,3,3-trifluoropropyl)trichlorosilane, nonafluorohexyl trichlorosilane, nonafluorohexyl trimethoxysilane, pentafluorophenylpropyl trichlorosilane, (tridecafluoro-1,1,2,2-tetra-hydrooctyl)trichlorosilane), pentafluorophenylpropyl trialkoxysilanes, perfluoroalkylethyltriethoxysilanes, perfluorododecyl- 1 H, 1H, 2H, 2H- triethoxysilane and (tridecafluoro-1,1,2,2-tetra-hydrooctyl)trialkoxysilanes.
The method of claim 1, wherein the polymer binder is selected from the group consisting of: poly(alkylene carbonate), poly(acrylic acid), acrylic copolymer, methacrylic copolymer and poly(methacrylic acid).
The method of claim 1, wherein the coating dispersion has a solids content of from about weight percent to about 60 weight percent. 14/044,190
A method of manufacturing a surface layer comprising: mixing graphene particles, a fluorosilane coupling agent and a first solvent to produce a first dispersion wherein the graphene particles comprise from about 0.1 to about 0.8 weight percent of the first dispersion; concentrating the first dispersion by removing the first solvent and the fluorosilane coupling agent to produce a concentrated dispersion wherein the graphene particles comprise from about 2.0 to about 10.0 weight percent of the concentrated dispersion; mixing the concentrated dispersion with a PFA dispersion comprising a second solvent, a surfactant, and PFA particles wherein the PFA dispersion has a solids content of about 30 weight percent to about 50 weight percent to form a second dispersion; and adding polymer binder in a third solvent to the second dispersion to form a coating dispersion wherein the coating dispersion has a viscosity of from about 10 centipoise to about 200 centipoise; providing a substrate; coating the coating dispersion on the substrate; and curing the coating dispersion.
The method of claim 11, wherein the first solvent is selected from the group consisting of. ketones, amides, sulfoxides, alcohols, ethers, esters, hydrocarbons and chlorinated hydrocarbons. 14/044,190 6
The method of claim 11, wherein the second solvent is selected from the group consisting of: ketones, amides, sulfoxides, alcohols, ethers, esters, hydrocarbons and chlorinated hydrocarbons.
The method of claim 11, wherein the third solvent is selected from the group consisting of: ketones, amides, sulfoxides, alcohols, ethers, esters, hydrocarbons and chlorinated hydrocarbons.
The method of claim 11, wherein the surfactant is selected from the group consisting of: poly(fluoroacrylate)-graft-poly(methyl methacrylate), fluorinated acrylate copolymer with pendant glycol groups, fluorinated acrylate copolymer with perfluoroalkyl sulfonate groups and polyether copolymers with pendant trifluoroethoxy group surfactant.
The method of claim 11, wherein the coating dispersion has a solids content of from about weight percent to about 60 weight percent.
The method of claim 11, wherein the polymer binder is selected from the group consisting of: poly(alkylene carbonate), poly(acrylic acid), acrylic copolymer, methacrylic copolymer and poly(methacrylic acid).
A method making a coating dispersion comprising: mixing graphene particles, a fluorosilane coupling agent and a first solvent to produce a first dispersion wherein the graphene particles comprise from about 0.1 to about 0.8 weight percent of the first dispersion; 14/044,190 7 concentrating the first dispersion by removing the first solvent to produce a concentrated dispersion wherein the graphene particles comprise from about 2.0 to about 10.0 weight percent of the concentrated dispersion; mixing the concentrated dispersion with a fluoropolymer particle dispersion comprising a second solvent, a surfactant, and fluoropolymer particles wherein the fluoropolymer particle dispersion has a solids content of about 30 weight percent to about weight percent to form a second dispersion; and adding poly(alkylene carbonate) in a third solvent to the second dispersion to form the coating dispersion wherein the coating dispersion has a viscosity of from about 10 centipoise to about 200 centipoise.
The method of claim 18, wherein the first solvent, the second solvent and the third solvent are selected from the group consisting of. ketones, amides, sulfoxides, alcohols, ethers, esters, hydrocarbons and chlorinated hydrocarbons.
The method of claim 18, wherein the coating dispersion has a solids content of from about weight percent to about 80 weight percent. 14/044,190 8
Layer stacks claimed or described, ordered top of device to substrate.
graphene/fluoropolymer composite surface layer
Materials described outside the worked examples.
graphene particles
fluorosilane coupling agent
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
coating dispersion viscosity | 10–200 | — |
fluoropolymer particle dispersion solids content | 30–50 |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 9,394,421Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG 1 is a flow chart of the process m accordance with the present teach ings [0012] It should be noted that some details of the figures have been simp li fied and are drawn to faci li tate understand in g of the embodiments rather than to ma intain st ric t structural accuracy, detail, and scale
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A method making a coating dispersion comprising: mixing graphene particles, a fluorosilane coupling agent and a first solvent to produce a first dispersion wherein the graphene particles comprise from about 0.1 to about 0.8 weight percent of the first dispersion; concentrating the first dispersion by removing the first solvent to produce a concentrated dispersion wherein the graphene particles comprise from about 2.0 to about 10.0 weight percent of the concentrated dispersion; mixing the concentrated dispersion with a fluoropolymer particle dispersion comprising a second solvent, a surfactant, and fluoropolymer particles wherein the fluoropolymer particle dispersion has a solids content of about 30 weight percent to about 50 weight percent to form a second dispersion; and adding polymer binder in a third solvent to the second dispersion to form the coating dispersion wherein the coating dispersion has a viscosity of from about centipoise to about 200 centipoise.
The method of claim 1, wherein the first solvent is selected from the group consisting of. ketones, amides, sulfoxides, alcohols, ethers, esters, hydrocarbons and chlorinated hydrocarbons. 14/044,190 3
The method of claim 1, wherein the second solvent is selected from the group consisting of: ketones, amides, sulfoxides, alcohols, ethers, esters, hydrocarbons and chlorinated hydrocarbons.
The method of claim 1, wherein the third solvent is selected from the group consisting of: ketones, amides, sulfoxides, alcohols, ethers, esters, hydrocarbons and chlorinated hydrocarbons.
The method of claim 1, wherein the surfactant is selected from the group consisting of: poly(fluoroacrylate)-graft-poly(methyl methacrylate), fluorinated acrylate copolymer with pendant glycol groups, fluorinated acrylate copolymer with pendant perfluoroalkyl sulfonate groups and polyether copolymers with pendant trifluoroethoxy groups.
The method of claim 1, wherein the fluoropolymer particles comprise particles selected from the group consisting of: polytetrafluoroethylene (PTFE); perfluoroalkoxy polymer resin (PFA); copolymers of tetrafluoroethylene (TFE) and hexafluoropropylene (H FP); copolymers of two of vinylidenefluoride, hexafluoropropylene, and tetrafluoroethylene; terpolymers of vinylidenefluoride, hexafluoropropylene and tetrafluoroethylene; and tetrapolymers of vinylidenefluoride, hexafluoropropylene, tetrafluoroethylene, and a cure site monomer.
The method of claim 1, wherein the fluoropolymer particles are selected from the group consisting of: copolymers of two of vinylidenefluoride, hexafluoropropylene, and 14/044,190 4 tetrafluoroethylene; terpolymers of vinylidenefluoride, hexafluoropropylene, and tetrafluoroethylene; and tetrapolymers of vinylidenefluoride, hexafluoropropylene, tetrafluoroethylene, and a cure site monomer.
The method of claim 1, wherein the fluorosilane coupling agent is seleceted from the group consisting of: (3,3,3-trifluoropropyl)trichlorosilane, nonafluorohexyl trichlorosilane, nonafluorohexyl trimethoxysilane, pentafluorophenylpropyl trichlorosilane, (tridecafluoro-1,1,2,2-tetra-hydrooctyl)trichlorosilane), pentafluorophenylpropyl trialkoxysilanes, perfluoroalkylethyltriethoxysilanes, perfluorododecyl- 1 H, 1H, 2H, 2H- triethoxysilane and (tridecafluoro-1,1,2,2-tetra-hydrooctyl)trialkoxysilanes.
The method of claim 1, wherein the polymer binder is selected from the group consisting of: poly(alkylene carbonate), poly(acrylic acid), acrylic copolymer, methacrylic copolymer and poly(methacrylic acid).
The method of claim 1, wherein the coating dispersion has a solids content of from about weight percent to about 60 weight percent. 14/044,190
A method of manufacturing a surface layer comprising: mixing graphene particles, a fluorosilane coupling agent and a first solvent to produce a first dispersion wherein the graphene particles comprise from about 0.1 to about 0.8 weight percent of the first dispersion; concentrating the first dispersion by removing the first solvent and the fluorosilane coupling agent to produce a concentrated dispersion wherein the graphene particles comprise from about 2.0 to about 10.0 weight percent of the concentrated dispersion; mixing the concentrated dispersion with a PFA dispersion comprising a second solvent, a surfactant, and PFA particles wherein the PFA dispersion has a solids content of about 30 weight percent to about 50 weight percent to form a second dispersion; and adding polymer binder in a third solvent to the second dispersion to form a coating dispersion wherein the coating dispersion has a viscosity of from about 10 centipoise to about 200 centipoise; providing a substrate; coating the coating dispersion on the substrate; and curing the coating dispersion.
The method of claim 11, wherein the first solvent is selected from the group consisting of. ketones, amides, sulfoxides, alcohols, ethers, esters, hydrocarbons and chlorinated hydrocarbons. 14/044,190 6
The method of claim 11, wherein the second solvent is selected from the group consisting of: ketones, amides, sulfoxides, alcohols, ethers, esters, hydrocarbons and chlorinated hydrocarbons.
The method of claim 11, wherein the third solvent is selected from the group consisting of: ketones, amides, sulfoxides, alcohols, ethers, esters, hydrocarbons and chlorinated hydrocarbons.
The method of claim 11, wherein the surfactant is selected from the group consisting of: poly(fluoroacrylate)-graft-poly(methyl methacrylate), fluorinated acrylate copolymer with pendant glycol groups, fluorinated acrylate copolymer with perfluoroalkyl sulfonate groups and polyether copolymers with pendant trifluoroethoxy group surfactant.
The method of claim 11, wherein the coating dispersion has a solids content of from about weight percent to about 60 weight percent.
The method of claim 11, wherein the polymer binder is selected from the group consisting of: poly(alkylene carbonate), poly(acrylic acid), acrylic copolymer, methacrylic copolymer and poly(methacrylic acid).
A method making a coating dispersion comprising: mixing graphene particles, a fluorosilane coupling agent and a first solvent to produce a first dispersion wherein the graphene particles comprise from about 0.1 to about 0.8 weight percent of the first dispersion; 14/044,190 7 concentrating the first dispersion by removing the first solvent to produce a concentrated dispersion wherein the graphene particles comprise from about 2.0 to about 10.0 weight percent of the concentrated dispersion; mixing the concentrated dispersion with a fluoropolymer particle dispersion comprising a second solvent, a surfactant, and fluoropolymer particles wherein the fluoropolymer particle dispersion has a solids content of about 30 weight percent to about weight percent to form a second dispersion; and adding poly(alkylene carbonate) in a third solvent to the second dispersion to form the coating dispersion wherein the coating dispersion has a viscosity of from about 10 centipoise to about 200 centipoise.
The method of claim 18, wherein the first solvent, the second solvent and the third solvent are selected from the group consisting of. ketones, amides, sulfoxides, alcohols, ethers, esters, hydrocarbons and chlorinated hydrocarbons.
The method of claim 18, wherein the coating dispersion has a solids content of from about weight percent to about 80 weight percent. 14/044,190 8
Layer stacks claimed or described, ordered top of device to substrate.
graphene/fluoropolymer composite surface layer
Materials described outside the worked examples.
graphene particles
fluorosilane coupling agent
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
coating dispersion viscosity | 10–200 | — |
fluoropolymer particle dispersion solids content | 30–50 |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 9,394,421Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG 1 is a flow chart of the process m accordance with the present teach ings [0012] It should be noted that some details of the figures have been simp li fied and are drawn to faci li tate understand in g of the embodiments rather than to ma intain st ric t structural accuracy, detail, and scale
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A method making a coating dispersion comprising: mixing graphene particles, a fluorosilane coupling agent and a first solvent to produce a first dispersion wherein the graphene particles comprise from about 0.1 to about 0.8 weight percent of the first dispersion; concentrating the first dispersion by removing the first solvent to produce a concentrated dispersion wherein the graphene particles comprise from about 2.0 to about 10.0 weight percent of the concentrated dispersion; mixing the concentrated dispersion with a fluoropolymer particle dispersion comprising a second solvent, a surfactant, and fluoropolymer particles wherein the fluoropolymer particle dispersion has a solids content of about 30 weight percent to about 50 weight percent to form a second dispersion; and adding polymer binder in a third solvent to the second dispersion to form the coating dispersion wherein the coating dispersion has a viscosity of from about centipoise to about 200 centipoise.
The method of claim 1, wherein the first solvent is selected from the group consisting of. ketones, amides, sulfoxides, alcohols, ethers, esters, hydrocarbons and chlorinated hydrocarbons. 14/044,190 3
The method of claim 1, wherein the second solvent is selected from the group consisting of: ketones, amides, sulfoxides, alcohols, ethers, esters, hydrocarbons and chlorinated hydrocarbons.
The method of claim 1, wherein the third solvent is selected from the group consisting of: ketones, amides, sulfoxides, alcohols, ethers, esters, hydrocarbons and chlorinated hydrocarbons.
The method of claim 1, wherein the surfactant is selected from the group consisting of: poly(fluoroacrylate)-graft-poly(methyl methacrylate), fluorinated acrylate copolymer with pendant glycol groups, fluorinated acrylate copolymer with pendant perfluoroalkyl sulfonate groups and polyether copolymers with pendant trifluoroethoxy groups.
The method of claim 1, wherein the fluoropolymer particles comprise particles selected from the group consisting of: polytetrafluoroethylene (PTFE); perfluoroalkoxy polymer resin (PFA); copolymers of tetrafluoroethylene (TFE) and hexafluoropropylene (H FP); copolymers of two of vinylidenefluoride, hexafluoropropylene, and tetrafluoroethylene; terpolymers of vinylidenefluoride, hexafluoropropylene and tetrafluoroethylene; and tetrapolymers of vinylidenefluoride, hexafluoropropylene, tetrafluoroethylene, and a cure site monomer.
The method of claim 1, wherein the fluoropolymer particles are selected from the group consisting of: copolymers of two of vinylidenefluoride, hexafluoropropylene, and 14/044,190 4 tetrafluoroethylene; terpolymers of vinylidenefluoride, hexafluoropropylene, and tetrafluoroethylene; and tetrapolymers of vinylidenefluoride, hexafluoropropylene, tetrafluoroethylene, and a cure site monomer.
The method of claim 1, wherein the fluorosilane coupling agent is seleceted from the group consisting of: (3,3,3-trifluoropropyl)trichlorosilane, nonafluorohexyl trichlorosilane, nonafluorohexyl trimethoxysilane, pentafluorophenylpropyl trichlorosilane, (tridecafluoro-1,1,2,2-tetra-hydrooctyl)trichlorosilane), pentafluorophenylpropyl trialkoxysilanes, perfluoroalkylethyltriethoxysilanes, perfluorododecyl- 1 H, 1H, 2H, 2H- triethoxysilane and (tridecafluoro-1,1,2,2-tetra-hydrooctyl)trialkoxysilanes.
The method of claim 1, wherein the polymer binder is selected from the group consisting of: poly(alkylene carbonate), poly(acrylic acid), acrylic copolymer, methacrylic copolymer and poly(methacrylic acid).
The method of claim 1, wherein the coating dispersion has a solids content of from about weight percent to about 60 weight percent. 14/044,190
A method of manufacturing a surface layer comprising: mixing graphene particles, a fluorosilane coupling agent and a first solvent to produce a first dispersion wherein the graphene particles comprise from about 0.1 to about 0.8 weight percent of the first dispersion; concentrating the first dispersion by removing the first solvent and the fluorosilane coupling agent to produce a concentrated dispersion wherein the graphene particles comprise from about 2.0 to about 10.0 weight percent of the concentrated dispersion; mixing the concentrated dispersion with a PFA dispersion comprising a second solvent, a surfactant, and PFA particles wherein the PFA dispersion has a solids content of about 30 weight percent to about 50 weight percent to form a second dispersion; and adding polymer binder in a third solvent to the second dispersion to form a coating dispersion wherein the coating dispersion has a viscosity of from about 10 centipoise to about 200 centipoise; providing a substrate; coating the coating dispersion on the substrate; and curing the coating dispersion.
The method of claim 11, wherein the first solvent is selected from the group consisting of. ketones, amides, sulfoxides, alcohols, ethers, esters, hydrocarbons and chlorinated hydrocarbons. 14/044,190 6
The method of claim 11, wherein the second solvent is selected from the group consisting of: ketones, amides, sulfoxides, alcohols, ethers, esters, hydrocarbons and chlorinated hydrocarbons.
The method of claim 11, wherein the third solvent is selected from the group consisting of: ketones, amides, sulfoxides, alcohols, ethers, esters, hydrocarbons and chlorinated hydrocarbons.
The method of claim 11, wherein the surfactant is selected from the group consisting of: poly(fluoroacrylate)-graft-poly(methyl methacrylate), fluorinated acrylate copolymer with pendant glycol groups, fluorinated acrylate copolymer with perfluoroalkyl sulfonate groups and polyether copolymers with pendant trifluoroethoxy group surfactant.
The method of claim 11, wherein the coating dispersion has a solids content of from about weight percent to about 60 weight percent.
The method of claim 11, wherein the polymer binder is selected from the group consisting of: poly(alkylene carbonate), poly(acrylic acid), acrylic copolymer, methacrylic copolymer and poly(methacrylic acid).
A method making a coating dispersion comprising: mixing graphene particles, a fluorosilane coupling agent and a first solvent to produce a first dispersion wherein the graphene particles comprise from about 0.1 to about 0.8 weight percent of the first dispersion; 14/044,190 7 concentrating the first dispersion by removing the first solvent to produce a concentrated dispersion wherein the graphene particles comprise from about 2.0 to about 10.0 weight percent of the concentrated dispersion; mixing the concentrated dispersion with a fluoropolymer particle dispersion comprising a second solvent, a surfactant, and fluoropolymer particles wherein the fluoropolymer particle dispersion has a solids content of about 30 weight percent to about weight percent to form a second dispersion; and adding poly(alkylene carbonate) in a third solvent to the second dispersion to form the coating dispersion wherein the coating dispersion has a viscosity of from about 10 centipoise to about 200 centipoise.
The method of claim 18, wherein the first solvent, the second solvent and the third solvent are selected from the group consisting of. ketones, amides, sulfoxides, alcohols, ethers, esters, hydrocarbons and chlorinated hydrocarbons.
The method of claim 18, wherein the coating dispersion has a solids content of from about weight percent to about 80 weight percent. 14/044,190 8
Layer stacks claimed or described, ordered top of device to substrate.
graphene/fluoropolymer composite surface layer
Materials described outside the worked examples.
graphene particles
fluorosilane coupling agent
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
coating dispersion viscosity | 10–200 | — |
fluoropolymer particle dispersion solids content | 30–50 |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 9,394,421Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG 1 is a flow chart of the process m accordance with the present teach ings [0012] It should be noted that some details of the figures have been simp li fied and are drawn to faci li tate understand in g of the embodiments rather than to ma intain st ric t structural accuracy, detail, and scale
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
A method making a coating dispersion comprising: mixing graphene particles, a fluorosilane coupling agent and a first solvent to produce a first dispersion wherein the graphene particles comprise from about 0.1 to about 0.8 weight percent of the first dispersion; concentrating the first dispersion by removing the first solvent to produce a concentrated dispersion wherein the graphene particles comprise from about 2.0 to about 10.0 weight percent of the concentrated dispersion; mixing the concentrated dispersion with a fluoropolymer particle dispersion comprising a second solvent, a surfactant, and fluoropolymer particles wherein the fluoropolymer particle dispersion has a solids content of about 30 weight percent to about 50 weight percent to form a second dispersion; and adding polymer binder in a third solvent to the second dispersion to form the coating dispersion wherein the coating dispersion has a viscosity of from about centipoise to about 200 centipoise.
The method of claim 1, wherein the first solvent is selected from the group consisting of. ketones, amides, sulfoxides, alcohols, ethers, esters, hydrocarbons and chlorinated hydrocarbons. 14/044,190 3
The method of claim 1, wherein the second solvent is selected from the group consisting of: ketones, amides, sulfoxides, alcohols, ethers, esters, hydrocarbons and chlorinated hydrocarbons.
The method of claim 1, wherein the third solvent is selected from the group consisting of: ketones, amides, sulfoxides, alcohols, ethers, esters, hydrocarbons and chlorinated hydrocarbons.
The method of claim 1, wherein the surfactant is selected from the group consisting of: poly(fluoroacrylate)-graft-poly(methyl methacrylate), fluorinated acrylate copolymer with pendant glycol groups, fluorinated acrylate copolymer with pendant perfluoroalkyl sulfonate groups and polyether copolymers with pendant trifluoroethoxy groups.
The method of claim 1, wherein the fluoropolymer particles comprise particles selected from the group consisting of: polytetrafluoroethylene (PTFE); perfluoroalkoxy polymer resin (PFA); copolymers of tetrafluoroethylene (TFE) and hexafluoropropylene (H FP); copolymers of two of vinylidenefluoride, hexafluoropropylene, and tetrafluoroethylene; terpolymers of vinylidenefluoride, hexafluoropropylene and tetrafluoroethylene; and tetrapolymers of vinylidenefluoride, hexafluoropropylene, tetrafluoroethylene, and a cure site monomer.
The method of claim 1, wherein the fluoropolymer particles are selected from the group consisting of: copolymers of two of vinylidenefluoride, hexafluoropropylene, and 14/044,190 4 tetrafluoroethylene; terpolymers of vinylidenefluoride, hexafluoropropylene, and tetrafluoroethylene; and tetrapolymers of vinylidenefluoride, hexafluoropropylene, tetrafluoroethylene, and a cure site monomer.
The method of claim 1, wherein the fluorosilane coupling agent is seleceted from the group consisting of: (3,3,3-trifluoropropyl)trichlorosilane, nonafluorohexyl trichlorosilane, nonafluorohexyl trimethoxysilane, pentafluorophenylpropyl trichlorosilane, (tridecafluoro-1,1,2,2-tetra-hydrooctyl)trichlorosilane), pentafluorophenylpropyl trialkoxysilanes, perfluoroalkylethyltriethoxysilanes, perfluorododecyl- 1 H, 1H, 2H, 2H- triethoxysilane and (tridecafluoro-1,1,2,2-tetra-hydrooctyl)trialkoxysilanes.
The method of claim 1, wherein the polymer binder is selected from the group consisting of: poly(alkylene carbonate), poly(acrylic acid), acrylic copolymer, methacrylic copolymer and poly(methacrylic acid).
The method of claim 1, wherein the coating dispersion has a solids content of from about weight percent to about 60 weight percent. 14/044,190
A method of manufacturing a surface layer comprising: mixing graphene particles, a fluorosilane coupling agent and a first solvent to produce a first dispersion wherein the graphene particles comprise from about 0.1 to about 0.8 weight percent of the first dispersion; concentrating the first dispersion by removing the first solvent and the fluorosilane coupling agent to produce a concentrated dispersion wherein the graphene particles comprise from about 2.0 to about 10.0 weight percent of the concentrated dispersion; mixing the concentrated dispersion with a PFA dispersion comprising a second solvent, a surfactant, and PFA particles wherein the PFA dispersion has a solids content of about 30 weight percent to about 50 weight percent to form a second dispersion; and adding polymer binder in a third solvent to the second dispersion to form a coating dispersion wherein the coating dispersion has a viscosity of from about 10 centipoise to about 200 centipoise; providing a substrate; coating the coating dispersion on the substrate; and curing the coating dispersion.
The method of claim 11, wherein the first solvent is selected from the group consisting of. ketones, amides, sulfoxides, alcohols, ethers, esters, hydrocarbons and chlorinated hydrocarbons. 14/044,190 6
The method of claim 11, wherein the second solvent is selected from the group consisting of: ketones, amides, sulfoxides, alcohols, ethers, esters, hydrocarbons and chlorinated hydrocarbons.
The method of claim 11, wherein the third solvent is selected from the group consisting of: ketones, amides, sulfoxides, alcohols, ethers, esters, hydrocarbons and chlorinated hydrocarbons.
The method of claim 11, wherein the surfactant is selected from the group consisting of: poly(fluoroacrylate)-graft-poly(methyl methacrylate), fluorinated acrylate copolymer with pendant glycol groups, fluorinated acrylate copolymer with perfluoroalkyl sulfonate groups and polyether copolymers with pendant trifluoroethoxy group surfactant.
The method of claim 11, wherein the coating dispersion has a solids content of from about weight percent to about 60 weight percent.
The method of claim 11, wherein the polymer binder is selected from the group consisting of: poly(alkylene carbonate), poly(acrylic acid), acrylic copolymer, methacrylic copolymer and poly(methacrylic acid).
A method making a coating dispersion comprising: mixing graphene particles, a fluorosilane coupling agent and a first solvent to produce a first dispersion wherein the graphene particles comprise from about 0.1 to about 0.8 weight percent of the first dispersion; 14/044,190 7 concentrating the first dispersion by removing the first solvent to produce a concentrated dispersion wherein the graphene particles comprise from about 2.0 to about 10.0 weight percent of the concentrated dispersion; mixing the concentrated dispersion with a fluoropolymer particle dispersion comprising a second solvent, a surfactant, and fluoropolymer particles wherein the fluoropolymer particle dispersion has a solids content of about 30 weight percent to about weight percent to form a second dispersion; and adding poly(alkylene carbonate) in a third solvent to the second dispersion to form the coating dispersion wherein the coating dispersion has a viscosity of from about 10 centipoise to about 200 centipoise.
The method of claim 18, wherein the first solvent, the second solvent and the third solvent are selected from the group consisting of. ketones, amides, sulfoxides, alcohols, ethers, esters, hydrocarbons and chlorinated hydrocarbons.
The method of claim 18, wherein the coating dispersion has a solids content of from about weight percent to about 80 weight percent. 14/044,190 8
Layer stacks claimed or described, ordered top of device to substrate.
graphene/fluoropolymer composite surface layer
Materials described outside the worked examples.
graphene particles
fluorosilane coupling agent
Additional fabrication and treatment steps described in the patent.
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
coating dispersion viscosity | 10–200 | — |
fluoropolymer particle dispersion solids content | 30–50 |
Related documents with shared materials, methods, properties, or citations.
fluoropolymer particles
surfactant
polymer binder
fluorinated surfactant
PFA particles
poly(alkylene carbonate)
cyclohexanone
C₆H₁₀O
coating dispersion solids content (claims 10/16) | ≤ 60 | — |
coating dispersion solids content (claim 20) | ≤ 80 | — |
Duration | 1–100 hours | — |
Thickness | 20–50 µm | — |
Thickness | 5–100 nm | — |
Thickness | 6–90 nm | — |
Thickness | 6–70 nm | — |
Thickness | 6–8 nm | — |
Temperature | 280–400 °C | — |
Temperature | 290–390 °C | — |
Temperature | 300–380 °C | — |
Temperature | 80–250 °C | — |
Temperature | 300–360 °C | — |
Temperature | 330–350 °C | — |
Temperature | 255–360 °C | — |
Temperature | 280–340 °C | — |
fluoropolymer particles
surfactant
polymer binder
fluorinated surfactant
PFA particles
poly(alkylene carbonate)
cyclohexanone
C₆H₁₀O
coating dispersion solids content (claims 10/16) | ≤ 60 | — |
coating dispersion solids content (claim 20) | ≤ 80 | — |
Duration | 1–100 hours | — |
Thickness | 20–50 µm | — |
Thickness | 5–100 nm | — |
Thickness | 6–90 nm | — |
Thickness | 6–70 nm | — |
Thickness | 6–8 nm | — |
Temperature | 280–400 °C | — |
Temperature | 290–390 °C | — |
Temperature | 300–380 °C | — |
Temperature | 80–250 °C | — |
Temperature | 300–360 °C | — |
Temperature | 330–350 °C | — |
Temperature | 255–360 °C | — |
Temperature | 280–340 °C | — |
fluoropolymer particles
surfactant
polymer binder
fluorinated surfactant
PFA particles
poly(alkylene carbonate)
cyclohexanone
C₆H₁₀O
coating dispersion solids content (claims 10/16) | ≤ 60 | — |
coating dispersion solids content (claim 20) | ≤ 80 | — |
Duration | 1–100 hours | — |
Thickness | 20–50 µm | — |
Thickness | 5–100 nm | — |
Thickness | 6–90 nm | — |
Thickness | 6–70 nm | — |
Thickness | 6–8 nm | — |
Temperature | 280–400 °C | — |
Temperature | 290–390 °C | — |
Temperature | 300–380 °C | — |
Temperature | 80–250 °C | — |
Temperature | 300–360 °C | — |
Temperature | 330–350 °C | — |
Temperature | 255–360 °C | — |
Temperature | 280–340 °C | — |
fluoropolymer particles
surfactant
polymer binder
fluorinated surfactant
PFA particles
poly(alkylene carbonate)
cyclohexanone
C₆H₁₀O
coating dispersion solids content (claims 10/16) | ≤ 60 | — |
coating dispersion solids content (claim 20) | ≤ 80 | — |
Duration | 1–100 hours | — |
Thickness | 20–50 µm | — |
Thickness | 5–100 nm | — |
Thickness | 6–90 nm | — |
Thickness | 6–70 nm | — |
Thickness | 6–8 nm | — |
Temperature | 280–400 °C | — |
Temperature | 290–390 °C | — |
Temperature | 300–380 °C | — |
Temperature | 80–250 °C | — |
Temperature | 300–360 °C | — |
Temperature | 330–350 °C | — |
Temperature | 255–360 °C | — |
Temperature | 280–340 °C | — |