含哒嗪酮结构生物基环氧树脂本征阻燃机制研究

Intrinsic Flame Retardant Mechanism of Bio⁃Based Epoxy Resin Containing Pyridazinone Structure

戚裕 曹旗 李佳惠 蹇锡高 翁志焕

Yu Qi Qi Cao Jiahui Li Xigao Jian Zhihuan Weng

大连理工大学 精细化工国家重点实验室，辽宁 大连 116024

State Key Laboratory of Fine Chemicals，Dalian University of Technology，Dalian Liaoning 116024，China

通过树脂烧蚀实验和扫描电子显微镜、X射线光电子能谱仪、热重?红外同步热分析仪等表征手段探究了含哒嗪酮结构的生物基环氧树脂的本征阻燃机制。结果表明，相对于目前最常用的石油基双酚A型环氧树脂，所制备的生物基环氧树脂在燃烧时更易形成大量膨胀型的炭层结构，同时释放出大量CO2和NH3等不可燃性气体和更少的可燃性气体；含哒嗪酮结构的本征阻燃生物基环氧树脂呈现出凝聚相?气相协同阻燃机理。本研究为构筑高性能的本征阻燃环氧树脂提供了新的思路。

The intrinsic flame retardant mechanism of bio?based epoxy resin containing pyridazinone structure was explored through resin ablation experiment, scanning electron microscope,X?ray photoelectron spectrometer,thermogravimetry?infrared simultaneous thermal analyzer,and other characterization methods.The results show that compared with the most commonly used petroleum?based bisphenol A epoxy resin, the resultant bio?based epoxy resin is more likely to form a large amount of intumescent carbon layer structure during combustion and release a large amount of non?combustible gases such as CO2 and NH3 with less combustible gases.The intrinsic flame retardant bio?based epoxy resin containing pyridazinone structure exhibits a condensed phase?gas phase synergistic flame retardant mechanism. This study provides new ideas for constructing high?performance intrinsic flame retardant epoxy resin.

国家自然科学基金项目(51873027);中央高校基本科研业务费专项资金项目(DUT20TD114)

10.12422/j.issn.1006-396X.2023.01.001