Title:
METHOD FOR STRIPPING COATING LAYER ON METAL SUBSTRATE AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/2023/109096
Kind Code:
A1
Abstract:
The present invention belongs to the field of coating stripping, and specifically relates to a method for stripping a coating layer on a metal substrate and the use thereof. In the present invention, a metal substrate is soaked in an acid solution for an acid treatment, such that the interface bonding between the metal substrate and the coating layer fails, and the coating layer is then stripped off, so that the metal substrate and the coating layer material can be obtained, wherein the acid solution comprises a chelating agent. According to the present invention, the surface of the metal substrate is damaged in an acidic environment, such that bonding between the metal and the coating layer fails; in addition, at the moment where the interface between the metal substrate and the coating layer is damaged, the chelating agent can chelate dissolved metal ions, and a dense passivation layer is formed on the metal surface, such that continuous dissolution of the metal substrate can be avoided, and the metal substrate can thus be efficiently separated from the coating layer.
Inventors:
SUN YONGMING (CN)
CHEN ZIHE (CN)
LU RONGHUA (CN)
LIU SHUYUAN (CN)
ZHAO JIANZHI (CN)
NIE RUICHAO (CN)
FENG RUIKANG (CN)
CHEN ZIHE (CN)
LU RONGHUA (CN)
LIU SHUYUAN (CN)
ZHAO JIANZHI (CN)
NIE RUICHAO (CN)
FENG RUIKANG (CN)
Application Number:
PCT/CN2022/103295
Publication Date:
June 22, 2023
Filing Date:
July 01, 2022
Export Citation:
Assignee:
UNIV HUAZHONG SCIENCE TECH (CN)
MIRATTERY CO LTD (CN)
MIRATTERY CO LTD (CN)
International Classes:
H01M10/54
Foreign References:
| CN114628808A | 2022-06-14 | |||
| CN108899604A | 2018-11-27 | |||
| CN111733423A | 2020-10-02 | |||
| CN106997972A | 2017-08-01 | |||
| CN101617435A | 2009-12-30 | |||
| JPH09195071A | 1997-07-29 |
Attorney, Agent or Firm:
HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY PATENT AGENCY CENTER (CN)
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