Enhancing dielectric constants of elastomer sheets
Dielectric ceramic particulates are introduced into thin a sheet of pre-cured elastomer to form a sheet. Successive layers of the sheets may then be laminated together to form a finished article. An electric field may be applied to the article during a curing process while the article is at a temperature near a Curie temperature of the dielectric ceramic particulates to increase a dielectric constant of the article. As each sheet may be different from each other in the finished article, the resulting finished article may have anisotropic dielectric and mechanical properties. Similarly, tiled dielectric ceramic structures may be introduced into the elastomers layers to generate materials with varying dielectric constants.
1. A system comprising:
a mold including a cavity configured to receive a plurality of layers comprising:
an uncured elastomer,
dielectric ceramic particulates having a value of a dielectric constant satisfying one or more conditions deposited onto the uncured elastomer,
an additional uncured elastomer layered onto the dielectric ceramic particulates, and
additional dielectric ceramic particulates having an additional value of an additional dielectric constant satisfying the one or more conditions deposited onto the additional elastomer;
an anode coupled to a side of the mold and coupled to a voltage source;
a cathode coupled to an additional side of the mold and coupled to the voltage source;
a compression mechanism coupled to the mold, the compression mechanism configured to compress the plurality of layers;
a temperature adjustment device coupled to the mold and configured to maintain a particular temperature within the mold; and
a controller coupled to the voltage source and to the temperature adjustment device, the controller configured to:
instruct the compression mechanism to compress the plurality of layers for an interval of time and at the particular temperature such as to cure the uncured elastomer and the additional uncured elastomer, and
instruct the voltage source to apply a voltage to the anode and to the cathode to generate an electric field that causes electrostatic poling of the dielectric ceramic particulates and the additional dielectric ceramic particulates for at least a portion of the interval of time while a temperature within the mold is within a threshold amount of a Curie temperature of the dielectric ceramic particulates or of the additional dielectric ceramic particulates such that a cured elastomer and the uncured elastomer have different dielectric constants.
2. The system of claim 1 , wherein a condition of the value of the dielectric constant comprises a value greater than a threshold value.
3. The system of claim 1 , wherein a condition of the value of the dielectric constant comprises a specific value of the dielectric constant.
4. The system of claim 1 , wherein the dielectric ceramic particulates have a Curie temperature within an additional threshold amount of a melt temperature of the uncured elastomer.
5. The system of claim 1 , wherein the dielectric ceramic particulates have a Curie temperature within an additional threshold amount of a melt temperature of the additional uncured elastomer.
6. The system of claim 1 , wherein the controller is further configured to instruct the voltage source to apply the voltage to the anode and to the cathode in response to the temperature within the mold being within the threshold amount of the Curie temperature of the dielectric ceramic particulates or of the additional dielectric ceramic particulates.