Title:
METHOD FOR EVALUATING RHEOLOGICAL PROPERTIES OF CROSS-LINKED SEMICONDUCTIVE SHIELDING MATERIAL
Document Type and Number:
WIPO Patent Application WO/2023/087401
Kind Code:
A1
Abstract:
A method for evaluating rheological properties of a cross-linked semiconductive shielding material, relating to the technical field of cable shielding material performance testing, and comprising: under a set initial test temperature, testing a shielding material sample to be tested to obtain a torque value corresponding to each rotating speed value; and screening and supplementing obtained test data points, and performing linear regression fitting on the rotating speed value and the torque value on the basis of an improved rheological model to successively obtain a parameter-containing yield stress, parameter-containing apparent viscosity, an offset index, and a flow index corresponding to the shielding material sample to be tested. The problems that existing cross-linked semiconductive shielding material evaluation methods are not comprehensive, the influence degree of a filler of a composite material cannot be reflected, the pseudoplasticity or dilatancy of the material cannot be reflected, and the shearing force effect cannot be reflected are solved. The method for evaluating the rheological properties of the cross-linked semiconductive shielding material ensures the reliability of an obtained data result as much as possible while ensuring that the test temperature is closer to the actual production and processing temperature, and improves the accuracy of material rheological property evaluation.
Inventors:
HOU SHUAI (CN)
FU MINGLI (CN)
LI XIAOLIN (CN)
JIA LEI (CN)
HUI BAOJUN (CN)
ZHU WENBO (CN)
FENG BIN (CN)
ZHANG YIFAN (CN)
ZHAN YUNPENG (CN)
ZHANG BIN (CN)
XU SHU (CN)
CHEN XIAO (CN)
WU GUOXING (CN)
FU MINGLI (CN)
LI XIAOLIN (CN)
JIA LEI (CN)
HUI BAOJUN (CN)
ZHU WENBO (CN)
FENG BIN (CN)
ZHANG YIFAN (CN)
ZHAN YUNPENG (CN)
ZHANG BIN (CN)
XU SHU (CN)
CHEN XIAO (CN)
WU GUOXING (CN)
Application Number:
PCT/CN2021/134851
Publication Date:
May 25, 2023
Filing Date:
December 01, 2021
Export Citation:
Assignee:
ELECTRIC POWER RES INSTITUTE CHINA SOUTHERN POWER GRID (CN)
SHENZHEN POWER SUPPLY BUREAU (CN)
SHENZHEN POWER SUPPLY BUREAU (CN)
International Classes:
G01N25/04; G01N5/00; G01N33/44
Foreign References:
| CN105910958A | 2016-08-31 | |||
| CN111122348A | 2020-05-08 | |||
| CN112763378A | 2021-05-07 | |||
| CN102393348A | 2012-03-28 | |||
| CN104483235A | 2015-04-01 | |||
| EP0264055A2 | 1988-04-20 | |||
| US3803903A | 1974-04-16 |
Other References:
SONG RANRAN, JIANG GUANCHENG, WANG KAI: "Gelation mechanism and rheological properties of polyacrylamide crosslinking with polyethyleneimine and its plugging performance in air-foam displacement", JOURNAL OF APPLIED POLYMER SCIENCE, JOHN WILEY & SONS, INC., US, vol. 135, no. 5, 5 February 2018 (2018-02-05), US , pages 45778, XP093066471, ISSN: 0021-8995, DOI: 10.1002/app.45778
Attorney, Agent or Firm:
SCIHEAD IP LAW FIRM (CN)
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