期刊
POLYMER
卷 235, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.polymer.2021.124264
关键词
Dicyanoimidazole; High-performance thermosetting resin; Synthesis of DCI
资金
- National Natural Science Foundation of China [21905183]
- China Post-doctoral Science Foundation [2019M663493]
The curing reaction of 4PODCI can be accelerated by N-H on the imidazole, and triazine is observed in the cured products. The 5% weight loss (T5%) of cured 4PODCI under nitrogen and air atmosphere is as high as 591 degrees C and 558.5 degrees C respectively, confirming its excellent thermal and thermomechanical properties. This suggests that DCI can be used as a new type of cross-linked element in high-performance thermosetting resin.
A novel full-aromatic dicyanoimidazole (DCI) resin monomer-2,2'-((1,4-phenylenebis(oxy))bis(4,1-phenylene)) bis(1H-imidazole-4,5-dicarbonitrile) (4PODCI)was synthesized by a simple Schiff base route. A variety of research methods (including FT-IR, UV-Vis, molecular simulation, model monomer, etc.) were applied to study the curing behavior of 4PODCI, the results show that the curing reaction of 4PODCI can be accelerated by N-H on the imidazole, and triazine is observed in the cured products. The 5% weight loss (T5%) of cured 4PODCI under nitrogen and air atmosphere is as high as 591 degrees C and 558.5 degrees C respectively, and its T-g is above 500 degrees C. These results confirm the excellent thermal and thermomechanical properties of cured 4PODCI, and DCI can be employed as a new type of cross-linked elements of high-performance thermosetting resin.
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