Release Time:2023-08-10  Hits:

Date of Publication: 2022-10-10

Journal: 功能材料

Institution: 化工学院

Issue: 3

Page Number: 418-419,423

ISSN: 1001-9731

Abstract: A novel polyarylate containing phthalazinone moiety was synthesized by the solution polycondensation of 4-[4-(4-carboxylphenoxy) phenyl]-2-(4-carboxyphenyl)-2,3-phthalazin-1-one (I) and 2,2-bis (4-hydroxyphenyl) propane (BPA). The structure of polymer was characterized by FTIR and 1H NMR spectra. The glass transition temperature (Tg) of polyarylate was 227°C as determined by differential scanning calorimetry (DSC) and the temperature at 5% weight loss of polyarylate measured by thermogravimetric analysis (TGA) was found to be 455°C in nitrogen atmosphere, and this showed that these polyarylates had excellent thermal stability. Moreover, this polyarylate exhibited excellent solubility in a variety of solvents such as N-methyl-2-pyrrolidinone (NMP), N,N-dimethylacetamide (DMAc) and chloroform (CHCl3). Insulating varnish of the polymer has high mechanical strength, good flexibility and adhesion, and favorable electric insulating property.

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