Title:
METHOD FOR PRE-DETECTING DEFECTIVE PRODUCT FROM POROUS POLYMER SUBSTRATE FOR SEPARATOR
Document Type and Number:
WIPO Patent Application WO/2022/216063
Kind Code:
A1
Abstract:
Disclosed is a method for pre-detecting a defective product from a porous polymer substrate for a separator, the method comprising the steps of: selecting a porous polymer substrate having a plurality of pores to detect whether it is a good product or a defective product; observing the selected porous polymer substrate with a scanning electron microscope (SEM) to obtain images of the porous polymer substrate; quantifying an average pore distribution index (PDI) by using the obtained images of the porous polymer substrate; calibrating the quantified average PDI to obtain a calibrated average PDI; confirming whether the quantified average PDI is 60 a.u or less; and classifying as a good product when it is confirmed that the quantified average PDI is 60 a.u or less, and classifying as a defective product when it is confirmed that the quantified average PDI is greater than 60 a.u.
Inventors:
BAE WON-SIK (KR)
LEE JOO-SUNG (KR)
KANG HO-SUNG (KR)
KIM YERN-SEUNG (KR)
PARK SE-JUNG (KR)
PARK JE-SEOB (KR)
HWANG JI-YOUNG (KR)
LEE JOO-SUNG (KR)
KANG HO-SUNG (KR)
KIM YERN-SEUNG (KR)
PARK SE-JUNG (KR)
PARK JE-SEOB (KR)
HWANG JI-YOUNG (KR)
Application Number:
PCT/KR2022/004989
Publication Date:
October 13, 2022
Filing Date:
April 06, 2022
Export Citation:
Assignee:
LG ENERGY SOLUTION LTD (KR)
International Classes:
G01N15/08; B07C5/34; G01N23/2251; G06T5/00; H01J37/26
Foreign References:
| JP2012107936A | 2012-06-07 | |||
| KR20170081444A | 2017-07-12 | |||
| JP2010272250A | 2010-12-02 | |||
| KR20180130462A | 2018-12-07 | |||
| JP2005114418A | 2005-04-28 | |||
| KR20210044855A | 2021-04-23 |
Other References:
ZIEL, R. ; HAUS, A. ; TULKE, A.: "Quantification of the pore size distribution (porosity profiles) in microfiltration membranes by SEM, TEM and computer image analysis", JOURNAL OF MEMBRANE SCIENCE, ELSEVIER BV, NL, vol. 323, no. 2, 15 October 2008 (2008-10-15), NL , pages 241 - 246, XP023980782, ISSN: 0376-7388, DOI: 10.1016/j.memsci.2008.05.057
See also references of EP 4206647A4
See also references of EP 4206647A4
Attorney, Agent or Firm:
PHIL & ONZI INT'L PATENT & LAW FIRM (KR)
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