A Novel One‐Step Synthesis of Silicon‐Containing Arylacetylene Resin Catalyzed by Et 2 Zn with Excellent Processability and Thermal Properties
Abstract A novel one‐step synthesis of silicon‐containing arylacetylene resin (PSA) catalyzed by Et 2 Zn was reported. PSA‐Et 2 Zn was prepared by the reaction between diethynylbenzene and dichlorodimethylsilane in the presence of diethylzinc. The structure of PSA‐Et 2 Zn was determined and the reac...
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Published in | ChemistrySelect (Weinheim) Vol. 7; no. 11 |
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Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
Published |
22.03.2022
|
Online Access | Get full text |
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Summary: | Abstract
A novel one‐step synthesis of silicon‐containing arylacetylene resin (PSA) catalyzed by Et
2
Zn was reported. PSA‐Et
2
Zn was prepared by the reaction between diethynylbenzene and dichlorodimethylsilane in the presence of diethylzinc. The structure of PSA‐Et
2
Zn was determined and the reaction mechanism was proposed. In addition, the processability, thermal curing behavior, and thermal properties were studied. When compared with the zinc powder catalysis method, the Et
2
Zn catalysis method demonstrates a greater effectiveness in avoiding the formation of olefinic products at the ends of the molecular chain, which can improve thermal capabilities. The results show that PSA‐Et
2
Zn possesses excellent processability and thermal properties. PSA‐Et
2
Zn has a wide processing window of 35∼182 °C and the thermal crosslinking reactions of PSA‐Et
2
Zn resin are mild. The cured PSA‐Et
2
Zn shows high thermal stability with a residue yield up to 87.9 % at 800 °C. Furthermore, the temperature at 5 % weight loss in nitrogen and air atmospheres is 584 °C and 539 °C, respectively. |
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ISSN: | 2365-6549 2365-6549 |
DOI: | 10.1002/slct.202200133 |