03-06-2021 дата публикации
Номер: US20210166833A1
Автор:
Yang FENG,
Anqi YANG,
Shengtao LI,
Liuqing YANG,
FENG YANG,
YANG ANQI,
LI SHENGTAO,
YANG LIUQING,
FENG, Yang,
YANG, Anqi,
LI, Shengtao,
YANG, Liuqing
Принадлежит:
The present invention discloses a preparation method of an insulating dielectric for improving energy density, including dissolving 1,4-phenylene diisothiocyanate in a polar solvent, then adding an organic diamine, and reacting at room temperature for 3 h to 6 h under a nitrogen atmosphere; then adding 4,4′-oxydianiline and pyromellitic dianhydride, and reacting at room temperature for 12 h to 18 h under a nitrogen atmosphere to obtain a random copolymer solution of polythiourea and polyamic acid; and spreading the random copolymer solution of polythiourea and polyamic acid on a copper plate, and carrying out gradient temperature elevation to obtain a random copolymer of polythiourea and polyimide. 1. A preparation method of an insulating dielectric for improving energy density , comprising the following steps:1) completely dissolving 1,4-phenylene diisothiocyanate in a polar solvent, then adding an organic diamine, and reacting at room temperature for 3 h to 6 h under a nitrogen atmosphere to obtain an amine-terminated polythiourea precursor;2) adding 4,4′-oxydianiline and pyromellitic dianhydride to the amine-terminated polythiourea precursor prepared in step 1), and reacting at room temperature for 12 h to 18 h under a nitrogen atmosphere to obtain a random copolymer solution of polythiourea and polyamic acid; and3) with casting, spreading the random copolymer solution of polythiourea and polyamic acid on a copper plate, and conducting amidation by gradient temperature elevation to form a film, and finally to obtain a random copolymer of polythiourea and polyimide.2. The preparation method of an insulating dielectric for improving energy density according to claim 1 , wherein claim 1 , in step 1) claim 1 , the 1 claim 1 ,4-phenylene diisothiocyanate and the polar solvent are used at a ratio of 0.96 mmol: (1-4) mL.3. The preparation method of an insulating dielectric for improving energy density according to claim 1 , wherein claim 1 , in step 1) claim 1 , the ...
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