Three-layer self-healing flexible strain sensor and preparation method thereof

US10816418B2 · kind B2 · utility

Assignee

• University of Electronic Science and Technology of China · CN

Inventors

• Huiling Tai · Chengdu, CN
• Yujin Yao · Ganzhou, CN
• Dongsheng Wang · Sichuan, CN
• Zhen Yuan · Suizhou City, CN
• Yadong Jiang · Sichuan, CN
• Guangzhong Xie · Sichuan, CN
• Xiaosong Du · Sichuan, CN

Key dates

• Filing date: Jul 16, 2018
• Grant date: Oct 27, 2020
• Expiry date: Feb 14, 2039

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31504
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A three-layer self-healing flexible strain sensor includes: a self-healing sensitive layer, wherein a self-healing encapsulating layer is respectively placed on an upper surface and a lower surface of the self-healing sensitive layer. The self-healing sensitive layer comprises a doped carbon material or a conductive composite. The three self-healing layers of the self-healing strain sensor can quickly repair the internal and external damage caused by the layered structure in a short period of time after the external damage, and does not require external stimulation. The three-layer self-healing structure strain sensor is simple in preparation without using a repair agent, which can achieve rapid self-repair at the room temperature, and can be repeatedly repair. The three-layer self-healing structure increases the strength and modulus of the strain sensor as well as increases the ability of the strain sensor to resist external damage.