Manufacturing process for piezoelectric fiber having swiss-roll structure

US11895921B2 · kind B2 · utility

Assignees

• NANTONG TEXTILE & SILK IND TECH RES INST · CN
• Soochow University · CN

Inventors

• Yuqing Liu · Hangzhou City, CN
• Yuting Wang · Yokohama, JP
• Jing Hu · Beijing, CN
• Xin Yang · 安丰镇, CN
• Ranran LI · 安丰镇, CN
• Jian-Zhi Fang · Daguantang, CN

Key dates

• Filing date: Jun 25, 2021
• Grant date: Feb 6, 2024
• Expiry date: Jun 25, 2041

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/42

Abstract

A preparation method for a piezoelectric fiber is provided including a piezoelectric functional layer and an insulating layer coated on the piezoelectric functional layer. The piezoelectric functional layer includes a piezoelectric composite layer of a spiral winding structure, and the piezoelectric composite layer includes a first piezoelectric layer, a conductive layer and a second piezoelectric layer that are sequentially stacked. The preparation method includes taking one end of the piezoelectric composite layer as a winding axis, winding the piezoelectric composite layer in a direction perpendicular to the winding axis to form the piezoelectric functional layer, wherein turns of winding the piezoelectric composite layer are greater than 5, coating the piezoelectric functional layer with the insulating layer, and vacuum heating to consolidate, to prepare a preform rod.