Patent
Atlas literature
Patent
US 9,502,150Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1. GO shows a non-linear current-voltage characteristic, attributable, at least in part, to its abundant surface groups.
FIG. 2 shows the non-linear properties of GO, with current plotted as a function of bias voltage. As can be seen, with low electrical fields, conductivity is …
FIG. 3, increasing the duration of reduction by hydrazine (N₂H₄) between one hour and 24 hours reduces the switching field of the non-linear behavior of the …
FIG. 4. The non-linear coefficient a can be calculated by fitting the transition portion of the conductivity plot according to SVG …
FIG. 5 shows the conductivity plots of several composite materials, the properties of which have been tailored by controlling their GO oxidation states. Each …
FIGS. 6 and 7 show plots of the dielectric constants and loss factors of reduced graphene oxide composites according to various embodiments of the invention. …
FIG. 7 shows the effect of GO oxidation state on the dielectric constant of composite materials according to various embodiments of the invention. As …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
1-18. canceled
A method of reducing electric field stress at a joint or termination of an electric cable, the method comprising: applying to the joint or termination a field grading material, the field grading material comprising reduced graphene oxide, distributed within a polymer material.
The method of claim 19, wherein the field grading material exhibits non-linear resistivity.
The method of claim 19, wherein the field grading material includes thermally-reduced graphene oxide reduced at a temperature between about 70 ° C and about 160 °C.
The method of claim 19, wherein the polymer material includes at least one polymer material selected from a group consisting of: natural rubbers, silicone, poly(dimethyl siloxane), ethylene propylene diene rubber, ethylene propylene rubber, epoxy, polyester, polyesterimide, and polyamidimide.
A method of preparing a graphene oxide polymer material, the method comprising: thermally reducing a quantity of graphene oxide by increasing an ambient temperature of an atmosphere containing the quantity of graphene oxide to between about 70 ° C and about 160 °C; admixing the thermally-reduced quantity of graphene oxide with at least one polymer material; and curing the admixture.
The method of claim 23, wherein the thermally-reduced graphene oxide is admixed with the at least one polymer material at a concentration between about 2 parts and about 5 parts per hundred parts of the at least one polymer material. Serial No. 14/241,658 2
The method of claim 23, wherein the at least one polymer material is selected from a group consisting of: natural rubbers, silicone, such as poly(dimethyl siloxane), EPDM rubber (ethylene propylene diene rubber), EPR (ethylene propylene rubber), epoxy, polyester, polyesterimide, and PA I (polyamidimide).
A graphene oxide polymer material prepared according to the method of claim 23.
26-30. canceled
A field grading material exhibiting non-linear resistivity comprising a quantity of reduced graphene oxide distributed within at least one polymer material.
The field grading material of claim 32, wherein the at least one polymer material is selected from a group consisting of: natural rubbers, silicone, poly(dimethyl siloxane), ethylene propylene diene rubber, ethylene propylene rubber, epoxy, polyester, polyesterimide, and polyamidmide.
The field grading material of claim 32, wherein the reduced graphene oxide has a concentration greater than about 2 parts per hundred parts of polymer.
Embodiments described in the patent, grouped by the materials and process steps they use.
3 materials1 process step
Commercially-available graphene oxide (GO) suspension comprising primarily single-layer GO dispersed in water was freeze dried at room temperature under pressure below about 100 mTorr. Separated GO was collected in a foam structure and subjected to thermal reduction by gradually increasing ambient temperature to between about 100°C and about 120°C, held for 12 hours. GO was also thermally reduced at temperatures up to about 150°C for 12 hours. Reduced GO was then mixed with poly(dimethyl siloxane) (PDMS, Dow Corning Sylgard 184) and cured in a mold to prepare planar samples. Planar samples were analyzed using dielectric spectroscopy and electrical conductivity tests.
Layer stacks claimed or described, ordered top of device to substrate.
field grading material for electric cable joint or termination
Materials described outside the worked examples.
polymer material
natural rubber
ethylene propylene diene rubber
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 2 shows the non-linear properties of GO, with current plotted as a function of bias voltage. As can be seen, with low electrical fields, conductivity is …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
non-linear resistivity | — | reduced graphene oxide/PDMS composite |
Pressure | ≤ 1 mTorr |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 9,502,150Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1. GO shows a non-linear current-voltage characteristic, attributable, at least in part, to its abundant surface groups.
FIG. 2 shows the non-linear properties of GO, with current plotted as a function of bias voltage. As can be seen, with low electrical fields, conductivity is …
FIG. 3, increasing the duration of reduction by hydrazine (N₂H₄) between one hour and 24 hours reduces the switching field of the non-linear behavior of the …
FIG. 4. The non-linear coefficient a can be calculated by fitting the transition portion of the conductivity plot according to SVG …
FIG. 5 shows the conductivity plots of several composite materials, the properties of which have been tailored by controlling their GO oxidation states. Each …
FIGS. 6 and 7 show plots of the dielectric constants and loss factors of reduced graphene oxide composites according to various embodiments of the invention. …
FIG. 7 shows the effect of GO oxidation state on the dielectric constant of composite materials according to various embodiments of the invention. As …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
1-18. canceled
A method of reducing electric field stress at a joint or termination of an electric cable, the method comprising: applying to the joint or termination a field grading material, the field grading material comprising reduced graphene oxide, distributed within a polymer material.
The method of claim 19, wherein the field grading material exhibits non-linear resistivity.
The method of claim 19, wherein the field grading material includes thermally-reduced graphene oxide reduced at a temperature between about 70 ° C and about 160 °C.
The method of claim 19, wherein the polymer material includes at least one polymer material selected from a group consisting of: natural rubbers, silicone, poly(dimethyl siloxane), ethylene propylene diene rubber, ethylene propylene rubber, epoxy, polyester, polyesterimide, and polyamidimide.
A method of preparing a graphene oxide polymer material, the method comprising: thermally reducing a quantity of graphene oxide by increasing an ambient temperature of an atmosphere containing the quantity of graphene oxide to between about 70 ° C and about 160 °C; admixing the thermally-reduced quantity of graphene oxide with at least one polymer material; and curing the admixture.
The method of claim 23, wherein the thermally-reduced graphene oxide is admixed with the at least one polymer material at a concentration between about 2 parts and about 5 parts per hundred parts of the at least one polymer material. Serial No. 14/241,658 2
The method of claim 23, wherein the at least one polymer material is selected from a group consisting of: natural rubbers, silicone, such as poly(dimethyl siloxane), EPDM rubber (ethylene propylene diene rubber), EPR (ethylene propylene rubber), epoxy, polyester, polyesterimide, and PA I (polyamidimide).
A graphene oxide polymer material prepared according to the method of claim 23.
26-30. canceled
A field grading material exhibiting non-linear resistivity comprising a quantity of reduced graphene oxide distributed within at least one polymer material.
The field grading material of claim 32, wherein the at least one polymer material is selected from a group consisting of: natural rubbers, silicone, poly(dimethyl siloxane), ethylene propylene diene rubber, ethylene propylene rubber, epoxy, polyester, polyesterimide, and polyamidmide.
The field grading material of claim 32, wherein the reduced graphene oxide has a concentration greater than about 2 parts per hundred parts of polymer.
Embodiments described in the patent, grouped by the materials and process steps they use.
3 materials1 process step
Commercially-available graphene oxide (GO) suspension comprising primarily single-layer GO dispersed in water was freeze dried at room temperature under pressure below about 100 mTorr. Separated GO was collected in a foam structure and subjected to thermal reduction by gradually increasing ambient temperature to between about 100°C and about 120°C, held for 12 hours. GO was also thermally reduced at temperatures up to about 150°C for 12 hours. Reduced GO was then mixed with poly(dimethyl siloxane) (PDMS, Dow Corning Sylgard 184) and cured in a mold to prepare planar samples. Planar samples were analyzed using dielectric spectroscopy and electrical conductivity tests.
Layer stacks claimed or described, ordered top of device to substrate.
field grading material for electric cable joint or termination
Materials described outside the worked examples.
polymer material
natural rubber
ethylene propylene diene rubber
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 2 shows the non-linear properties of GO, with current plotted as a function of bias voltage. As can be seen, with low electrical fields, conductivity is …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
non-linear resistivity | — | reduced graphene oxide/PDMS composite |
Pressure | ≤ 1 mTorr |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 9,502,150Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1. GO shows a non-linear current-voltage characteristic, attributable, at least in part, to its abundant surface groups.
FIG. 2 shows the non-linear properties of GO, with current plotted as a function of bias voltage. As can be seen, with low electrical fields, conductivity is …
FIG. 3, increasing the duration of reduction by hydrazine (N₂H₄) between one hour and 24 hours reduces the switching field of the non-linear behavior of the …
FIG. 4. The non-linear coefficient a can be calculated by fitting the transition portion of the conductivity plot according to SVG …
FIG. 5 shows the conductivity plots of several composite materials, the properties of which have been tailored by controlling their GO oxidation states. Each …
FIGS. 6 and 7 show plots of the dielectric constants and loss factors of reduced graphene oxide composites according to various embodiments of the invention. …
FIG. 7 shows the effect of GO oxidation state on the dielectric constant of composite materials according to various embodiments of the invention. As …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
1-18. canceled
A method of reducing electric field stress at a joint or termination of an electric cable, the method comprising: applying to the joint or termination a field grading material, the field grading material comprising reduced graphene oxide, distributed within a polymer material.
The method of claim 19, wherein the field grading material exhibits non-linear resistivity.
The method of claim 19, wherein the field grading material includes thermally-reduced graphene oxide reduced at a temperature between about 70 ° C and about 160 °C.
The method of claim 19, wherein the polymer material includes at least one polymer material selected from a group consisting of: natural rubbers, silicone, poly(dimethyl siloxane), ethylene propylene diene rubber, ethylene propylene rubber, epoxy, polyester, polyesterimide, and polyamidimide.
A method of preparing a graphene oxide polymer material, the method comprising: thermally reducing a quantity of graphene oxide by increasing an ambient temperature of an atmosphere containing the quantity of graphene oxide to between about 70 ° C and about 160 °C; admixing the thermally-reduced quantity of graphene oxide with at least one polymer material; and curing the admixture.
The method of claim 23, wherein the thermally-reduced graphene oxide is admixed with the at least one polymer material at a concentration between about 2 parts and about 5 parts per hundred parts of the at least one polymer material. Serial No. 14/241,658 2
The method of claim 23, wherein the at least one polymer material is selected from a group consisting of: natural rubbers, silicone, such as poly(dimethyl siloxane), EPDM rubber (ethylene propylene diene rubber), EPR (ethylene propylene rubber), epoxy, polyester, polyesterimide, and PA I (polyamidimide).
A graphene oxide polymer material prepared according to the method of claim 23.
26-30. canceled
A field grading material exhibiting non-linear resistivity comprising a quantity of reduced graphene oxide distributed within at least one polymer material.
The field grading material of claim 32, wherein the at least one polymer material is selected from a group consisting of: natural rubbers, silicone, poly(dimethyl siloxane), ethylene propylene diene rubber, ethylene propylene rubber, epoxy, polyester, polyesterimide, and polyamidmide.
The field grading material of claim 32, wherein the reduced graphene oxide has a concentration greater than about 2 parts per hundred parts of polymer.
Embodiments described in the patent, grouped by the materials and process steps they use.
3 materials1 process step
Commercially-available graphene oxide (GO) suspension comprising primarily single-layer GO dispersed in water was freeze dried at room temperature under pressure below about 100 mTorr. Separated GO was collected in a foam structure and subjected to thermal reduction by gradually increasing ambient temperature to between about 100°C and about 120°C, held for 12 hours. GO was also thermally reduced at temperatures up to about 150°C for 12 hours. Reduced GO was then mixed with poly(dimethyl siloxane) (PDMS, Dow Corning Sylgard 184) and cured in a mold to prepare planar samples. Planar samples were analyzed using dielectric spectroscopy and electrical conductivity tests.
Layer stacks claimed or described, ordered top of device to substrate.
field grading material for electric cable joint or termination
Materials described outside the worked examples.
polymer material
natural rubber
ethylene propylene diene rubber
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 2 shows the non-linear properties of GO, with current plotted as a function of bias voltage. As can be seen, with low electrical fields, conductivity is …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
non-linear resistivity | — | reduced graphene oxide/PDMS composite |
Pressure | ≤ 1 mTorr |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 9,502,150Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1. GO shows a non-linear current-voltage characteristic, attributable, at least in part, to its abundant surface groups.
FIG. 2 shows the non-linear properties of GO, with current plotted as a function of bias voltage. As can be seen, with low electrical fields, conductivity is …
FIG. 3, increasing the duration of reduction by hydrazine (N₂H₄) between one hour and 24 hours reduces the switching field of the non-linear behavior of the …
FIG. 4. The non-linear coefficient a can be calculated by fitting the transition portion of the conductivity plot according to SVG …
FIG. 5 shows the conductivity plots of several composite materials, the properties of which have been tailored by controlling their GO oxidation states. Each …
FIGS. 6 and 7 show plots of the dielectric constants and loss factors of reduced graphene oxide composites according to various embodiments of the invention. …
FIG. 7 shows the effect of GO oxidation state on the dielectric constant of composite materials according to various embodiments of the invention. As …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
1-18. canceled
A method of reducing electric field stress at a joint or termination of an electric cable, the method comprising: applying to the joint or termination a field grading material, the field grading material comprising reduced graphene oxide, distributed within a polymer material.
The method of claim 19, wherein the field grading material exhibits non-linear resistivity.
The method of claim 19, wherein the field grading material includes thermally-reduced graphene oxide reduced at a temperature between about 70 ° C and about 160 °C.
The method of claim 19, wherein the polymer material includes at least one polymer material selected from a group consisting of: natural rubbers, silicone, poly(dimethyl siloxane), ethylene propylene diene rubber, ethylene propylene rubber, epoxy, polyester, polyesterimide, and polyamidimide.
A method of preparing a graphene oxide polymer material, the method comprising: thermally reducing a quantity of graphene oxide by increasing an ambient temperature of an atmosphere containing the quantity of graphene oxide to between about 70 ° C and about 160 °C; admixing the thermally-reduced quantity of graphene oxide with at least one polymer material; and curing the admixture.
The method of claim 23, wherein the thermally-reduced graphene oxide is admixed with the at least one polymer material at a concentration between about 2 parts and about 5 parts per hundred parts of the at least one polymer material. Serial No. 14/241,658 2
The method of claim 23, wherein the at least one polymer material is selected from a group consisting of: natural rubbers, silicone, such as poly(dimethyl siloxane), EPDM rubber (ethylene propylene diene rubber), EPR (ethylene propylene rubber), epoxy, polyester, polyesterimide, and PA I (polyamidimide).
A graphene oxide polymer material prepared according to the method of claim 23.
26-30. canceled
A field grading material exhibiting non-linear resistivity comprising a quantity of reduced graphene oxide distributed within at least one polymer material.
The field grading material of claim 32, wherein the at least one polymer material is selected from a group consisting of: natural rubbers, silicone, poly(dimethyl siloxane), ethylene propylene diene rubber, ethylene propylene rubber, epoxy, polyester, polyesterimide, and polyamidmide.
The field grading material of claim 32, wherein the reduced graphene oxide has a concentration greater than about 2 parts per hundred parts of polymer.
Embodiments described in the patent, grouped by the materials and process steps they use.
3 materials1 process step
Commercially-available graphene oxide (GO) suspension comprising primarily single-layer GO dispersed in water was freeze dried at room temperature under pressure below about 100 mTorr. Separated GO was collected in a foam structure and subjected to thermal reduction by gradually increasing ambient temperature to between about 100°C and about 120°C, held for 12 hours. GO was also thermally reduced at temperatures up to about 150°C for 12 hours. Reduced GO was then mixed with poly(dimethyl siloxane) (PDMS, Dow Corning Sylgard 184) and cured in a mold to prepare planar samples. Planar samples were analyzed using dielectric spectroscopy and electrical conductivity tests.
Layer stacks claimed or described, ordered top of device to substrate.
field grading material for electric cable joint or termination
Materials described outside the worked examples.
polymer material
natural rubber
ethylene propylene diene rubber
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 2 shows the non-linear properties of GO, with current plotted as a function of bias voltage. As can be seen, with low electrical fields, conductivity is …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
non-linear resistivity | — | reduced graphene oxide/PDMS composite |
Pressure | ≤ 1 mTorr |
Related documents with shared materials, methods, properties, or citations.
ethylene propylene rubber
epoxy
polyester
polyesterimide
polyamidimide
reduced graphene oxide/PDMS composite
FIG. 4. The non-linear coefficient a can be calculated by fitting the transition portion of the conductivity plot according to SVG …
| — |
Temperature | 70–160 °C | — |
Pressure | ≥ 2 pa | — |
ethylene propylene rubber
epoxy
polyester
polyesterimide
polyamidimide
reduced graphene oxide/PDMS composite
FIG. 4. The non-linear coefficient a can be calculated by fitting the transition portion of the conductivity plot according to SVG …
| — |
Temperature | 70–160 °C | — |
Pressure | ≥ 2 pa | — |
ethylene propylene rubber
epoxy
polyester
polyesterimide
polyamidimide
reduced graphene oxide/PDMS composite
FIG. 4. The non-linear coefficient a can be calculated by fitting the transition portion of the conductivity plot according to SVG …
| — |
Temperature | 70–160 °C | — |
Pressure | ≥ 2 pa | — |
ethylene propylene rubber
epoxy
polyester
polyesterimide
polyamidimide
reduced graphene oxide/PDMS composite
FIG. 4. The non-linear coefficient a can be calculated by fitting the transition portion of the conductivity plot according to SVG …
| — |
Temperature | 70–160 °C | — |
Pressure | ≥ 2 pa | — |
