US 12,035,632 B2
Flexible and low cost piezoelectric composites with high d33 values
Jibran Khaliq, Delft (NL); Sybrand Van Der Zwaag, Delft (NL); Wilhelm Albert Groen, Delft (NL); and Jesus Alfonso Caraveo-Frescas, Thuwal (SA)
Assigned to SABIC GLOBAL TECHNOLOGIES B.V., Bergen op Zoom (NL)
Appl. No. 16/981,476
Filed by SABIC GLOBAL TECHNOLOGIES B.V., Bergen op Zoom (NL)
PCT Filed Mar. 18, 2019, PCT No. PCT/IB2019/052179
§ 371(c)(1), (2) Date Sep. 16, 2020,
PCT Pub. No. WO2019/180586, PCT Pub. Date Sep. 26, 2019.
Claims priority of provisional application 62/645,509, filed on Mar. 20, 2018.
Prior Publication US 2021/0028347 A1, Jan. 28, 2021
Int. Cl. H10N 30/85 (2023.01); H10N 30/092 (2023.01); H10N 30/098 (2023.01); H10N 30/857 (2023.01)
CPC H10N 30/852 (2023.02) [H10N 30/092 (2023.02); H10N 30/098 (2023.02); H10N 30/857 (2023.02)] 19 Claims
OG exemplary drawing
 
1. A composite comprising:
a piezoelectric filler; and
a polymer resin comprising a poly(vinylidene fluoride-trifluoroethylene)-based terpolymer,
wherein
the composite exhibits a piezoelectric coefficient d33 of greater than 30 pC/N when measured according to the Berlincourt Method using a d33 piezometer,
the composite is oriented at a poling voltage lower than a substantially similar polymer matrix in the absence of the piezoelectric filler when subjected to an electric field,
the composite exhibits an elastic modulus of less than 30 GPa when tested according to ASTM D3039, and
the composite exhibits a density of less than 5 g/cc according to the Archimedes method.