Invention Grant
- Patent Title: Lead-free piezo composites and methods of making thereof
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Application No.: US17593968Application Date: 2020-03-31
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Publication No.: US12256640B2Publication Date: 2025-03-18
- Inventor: Soma Guhathakurta , Jesus Alfonso Caraveo Frescas
- Applicant: SABIC Global Technologies B.V.
- Applicant Address: NL Bergen op Zoom
- Assignee: SABIC Global Technologies B.V.
- Current Assignee: SABIC Global Technologies B.V.
- Current Assignee Address: NL Bergen op Zoom
- Agency: Norton Rose Fulbright US LLP
- Priority: IN201911013259 20190402
- International Application: PCT/IB2020/053052 WO 20200331
- International Announcement: WO2020/202006 WO 20201008
- Main IPC: H10N30/092
- IPC: H10N30/092 ; C08J3/21 ; C08J5/18 ; C08K3/22 ; H10N30/045 ; H10N30/85

Abstract:
Methods of producing lead-free piezoelectric composites are described. The method can include adding a lead-free piezoelectric additive to a solution that includes a solvent and polymer solubilized therein. The solvent can have i) a boiling point ≥80° C. at 0.1 MPa and ii) a solubility in water of ≥0.1 g/g and/or a dielectric constant ≥20. The solvent can be removed to form a polymeric matrix having the lead-free piezoelectric particles dispersed therein. Electrical treatment of the polymeric matrix can form the piezoelectric component. Lead-free piezoelectric composites and devices that include the lead-free piezoelectric composites are also described.
Public/Granted literature
- US20220181543A1 LEAD-FREE PIEZO COMPOSITES AND METHODS OF MAKING THEREOF Public/Granted day:2022-06-09
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