Title:
POROUS CONDUCTIVE PASTE FOR PREPARING FLEXIBLE PIEZORESISTIVE SENSOR, AND PREPARATION METHOD THEREFOR AND APPLICATION THEREOF
Document Type and Number:
WIPO Patent Application WO/2020/113807
Kind Code:
A1
Abstract:
Provided are porous conductive paste for preparing a flexible piezoresistive sensor, and a preparation method therefor and an application thereof. The porous conductive paste comprises a conductive carbon material, a sacrificial template, and a high molecular polymer carrier. The high molecular polymer carrier comprises a high molecular polymer and an organic solvent, and the mass ratio of the high molecular polymer to the organic solvent is 1:2 to 1:3; and based on the total mass of the conductive carbon material, the sacrificial template and the high molecular polymer, the mass percentage of the conductive carbon material is 2%-5%, the mass percentage of the sacrificial template is 75%-85%, and the mass percentage of the high molecular polymer is 10%-23%. By preparing the porous conductive paste by using the sacrificial template with adjustable particle sizes, the number of nanopores or micron pores after the conductive paste is formed into a film is greatly increased. Under the action of stress, conductive particles around the pores are in contact with each other, the conductivity of the material is effectively reduced, and thus the porous conductive paste is able to, with the conductive particles, improve the sensitivity of a flexible piezoresistive sensor.
Inventors:
PENG ZHENGCHUN (CN)
WANG ZIYA (CN)
GUAN XIAO (CN)
WANG HAIFEI (CN)
HE CHUBIN (CN)
LIN WAN'ER (CN)
TIAN XIAOJUN (CN)
WANG ZIYA (CN)
GUAN XIAO (CN)
WANG HAIFEI (CN)
HE CHUBIN (CN)
LIN WAN'ER (CN)
TIAN XIAOJUN (CN)
Application Number:
PCT/CN2019/073584
Publication Date:
June 11, 2020
Filing Date:
January 29, 2019
Export Citation:
Assignee:
UNIV SHENZHEN (CN)
International Classes:
H01B1/24; B81B3/00; B81C1/00; H01B13/00
Foreign References:
| CN102443274A | 2012-05-09 | |||
| CN1511874A | 2004-07-14 |
Other References:
MCCALL, R.W. ET AL.: "Piezoelectric Nanoparticle−Polymer Composite Foams", "ADVANCED MATERIALS", vol. 6, no. 22, 29 October 2014 (2014-10-29), XP055713264, DOI: 201X
WU, SHUYING ET AL.: "Porous PDMS/CNFS Composites for Stretchable Strain", "21ST INTERNATIONAL CONFERENCE ON COMPOSITE MATERIALS XI'AN", 25 August 2017 (2017-08-25), pages 20 - 25, XP055713266, DOI: 20190821143402A
FAN, JUNYOU ET AL.: "Stretchable Porous Carbon Nanotube-Elastomer Hybrid Nanocomposite for Harvesting Mechanical Energy", "ADVANCED MATERIALS", vol. 29, no. 2, 21 November 2016 (2016-11-21), pages 6 - 7, XP055713430, DOI: 20190822101548A
WU, SHUYING ET AL.: "Porous PDMS/CNFS Composites for Stretchable Strain", "21ST INTERNATIONAL CONFERENCE ON COMPOSITE MATERIALS XI'AN", 25 August 2017 (2017-08-25), pages 20 - 25, XP055713266, DOI: 20190821143402A
FAN, JUNYOU ET AL.: "Stretchable Porous Carbon Nanotube-Elastomer Hybrid Nanocomposite for Harvesting Mechanical Energy", "ADVANCED MATERIALS", vol. 29, no. 2, 21 November 2016 (2016-11-21), pages 6 - 7, XP055713430, DOI: 20190822101548A
Attorney, Agent or Firm:
J.Z.M.C. PATENT AND TRADEMARK LAW OFFICE (GENERAL PARTNERSHIP) (CN)
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