High flame retardant and heat-resistance, low dielectric benzoxazine resin with phthalimide structure

Dandan Chen, Benben Liu, Xu Wang, Xiangmei Li*, Xingyan Xu, Jiyu He, Rongjie Yang

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

19 引用 (Scopus)

摘要

In order to improve the thermal stability, flame retardancy and dielectric properties of benzoxazine resin, benzoxazine resins with different content of 4,4′-‍(hexafluoroisopropylidene) diphthalic dianhydride(m-EFDA) were prepared by crosslinking alkynyl groups. The results showed that benzoxazine can improve the processing window of m-EFDA, while m-EFDA was beneficial to improve the thermal stability and dielectric properties of benzoxazine resins. The Td5% of PBZFI-50 reached 418.2°C, Td10% was up to 457.3°C, Dk was 2.89 and Df was as low as 0.013 at 1MHz. The chemical structures of volatile products from the pyrolysis of benzoxazines resin at different temperatures were identified by TG-FTIR and Py-GC/MS, and the promoting effect of m-EFDA on improving the thermal stability was confirmed. Compared with pure benzoxazine resin, the resin containing m-EFDA has great performance improvement, which is expected to be used as high temperature and low dielectric material in aerospace and microelectronics field.

源语言英语
文章编号110150
期刊Polymer Degradation and Stability
205
DOI
出版状态已出版 - 11月 2022

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