Research progress in thermosetting resins containing Schiff base structure

doi:10.19491/j.issn.1001-9278.2023.11.018

Abstract

Abstract:

Thermosetting resins have excellent mechanical and thermal properties. However， they cannot be reprocessed and is difficult to degrade. The introduction of Schiff base into thermosetting resins and the achievement of plasticity and degradability of thermosetting resins through a dissociation mechanism have become a research hotspot of biomass materials. This paper introduced the synthesis methods of thermosetting resins with the Schiff base structure in recent years， enumerated the commonly used synthetic materials， and expounded the degradation mechanisms of the Schiff base structure. According to the structure of the Schiff base， different application fields were listed. Finally， the summarization was presented and the prospect was put forward.

Key words: thermosetting resin, Schiff base, degradation, remodeling, flame retardant, antibacterial

CLC Number:

TQ322.4

ZHOU Ziyu, SANG Xiaoming, GENG Xu, CHEN Xinggang. Research progress in thermosetting resins containing Schiff base structure[J]. China Plastics, 2023, 37(11): 163-169.

Figures/Tables 5

Fig.1. Basic reaction mechanism of Schiff bases

Fig.2. Synthesis mechanism of vanillin based bifunctional epoxy resin

Fig.3. General formula for crosslinking hydroxy⁃containing carbonyl compound with diamine after etherification

羰基化合物	胺类	参考文献
香草醛	对氨基苯酚	［9］
香草醛	4⁃氨基⁃4H⁃1，2，4⁃三唑	［20］
苯甲醛	4，4⁃亚甲基双环己胺	［10］
原儿茶醛（PH）	4，4⁃二氨基二苯甲烷（DDM）	［14］
原儿茶醛（PH）	妥布霉素（TOB）	［16］
糠胺	水杨醛	［15］
对苯二甲醛	聚醚胺	［23］

Tab.1. Raw materials for synthesis of Schiff base structure

Fig.4. Degradation mechanism of thermosetting resin containing Schiff base structure

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