Thermally and electrically enhanced elastomeric conductive materials
View Patent ↗An elastomeric material includes an elastomeric matrix having one or more outer surfaces and a set of electrically conductive pathways disposed through the elastomeric matrix. The elastomeric material also includes a thermally-conductive and electrically-insulative material, disposed through the elastomeric matrix, which improves the formation of the electrically conductive pathways.
1. A sheet of elastomeric material, comprising:
an elastomeric matrix having two outer surfaces separated by a sheet thickness;
a set of substantially parallel electrically conductive pathways comprising magnetically aligned electrically conductive particles disposed through the elastomeric matrix; and
at least 1% by volume electrically-insulative particles with sizes between about 1% and 20% of the sheet thickness disposed within the elastomeric matrix.
2. The sheet of elastomeric material of claim 1 , wherein at least 2% of the elastomeric material comprises electrically-insulative particles with sizes between about 1% and 20% of the sheet thickness.
3. The sheet of elastomeric material of claim 2 , wherein at least 5% of the elastomeric material comprises electrically-insulative particles with sizes between about 7% and 30% of the magnetically aligned electrically conductive particles.
4. The sheet of elastomeric material of claim 3 , wherein the set of electrically conductive particles comprises at least 13% by volume of the elastomeric material.
5. The sheet of elastomeric material of claim 4 , wherein the sheet is configured to define an average lateral separation between adjacent pads of an associated circuit board that is less than twice the sheet thickness, the average lateral separation providing lateral electrical isolation between the adjacent pads.
6. The sheet of elastomeric material of claim 2 , wherein the set of electrically conductive particles comprises at least 13% by volume of the elastomeric material.
7. The sheet of elastomeric material of claim 6 , wherein the sheet is configured to define an average lateral separation between adjacent pads of an associated circuit board that is less than twice the sheet thickness, the average lateral separation providing lateral electrical isolation between the adjacent pads.
8. The sheet of elastomeric material of claim 1 , wherein at least 5% of the elastomeric material comprises electrically-insulative particles with sizes between about 7% and 30% of the magnetically aligned electrically conductive particles.
9. The sheet of elastomeric material of claim 8 , wherein the set of electrically conductive particles comprises at least 13% by volume of the elastomeric material.
10. The sheet of elastomeric material of claim 9 , wherein the sheet is configured to define an average lateral separation between adjacent pads of an associated circuit board that is less than twice the sheet thickness, the average lateral separation providing lateral electrical isolation between the adjacent pads.
11. The sheet of elastomeric material of claim 1 , wherein the set of electrically conductive particles comprises at least 13% by volume of the elastomeric material.
12. The sheet of elastomeric material of claim 11 , wherein the sheet is configured to define an average lateral separation between adjacent pads of an associated circuit board that is less than twice the sheet thickness, the average lateral separation providing lateral electrical isolation between the adjacent pads.
13. The sheet of elastomeric material of claim 1 , wherein the electrically-insulative particles comprise ceramic particles.
14. The sheet of elastomeric material of claim 13 , wherein the ceramic particles comprise boron nitride particles.
15. The sheet of elastomeric material of claim 14 , wherein the boron nitride particles are disposed within the elastomeric material at a concentration of between about 10% and 30%.