Epoxidation of pillar[5]arene with three dimensional macrocyclic structure and host-guest capability for epoxy coatings

编号 020034603

推送时间 20220606

研究领域 林产化工 

年份 2022 

类型 期刊 

语种 英语

标题 Epoxidation of pillar[5]arene with three dimensional macrocyclic structure and host-guest capability for epoxy coatings

来源期刊 Progress in Organic Coatings

期 第346期

发表时间 20220501

关键词 Epoxy resin;  Pillar[5]arene;  Host-guest capability;  Dielectric properties;  Thermal stability;  Flame retardancy; 

摘要 To expand the properties of epoxy coatings for emerging technologies, herein, a pillar[5]arene-based epoxy compound (PAEP) containing unique pillar-shaped three dimensional macrocyclic structure was prepared and cured with conventional 4,4'-diaminodiphenylmethane (DDM). Interestingly, the PAEP exhibited a strong host-guest complexation with 1,4-dibromobutane (DBrBu), a potential organic antibacterial agent, with a complex constant of 215.7 & PLUSMN; 11.02 M-1. Furthermore, the PAEP/DDM resin possessed enhanced mechanical and thermal properties, probably due to the increase of chain-entanglement brought about by the cyclic structure. Also, the PAEP/DDM resin exhibited excellent intrinsic flame retardant properties, including significantly reduced peak heat release rate (153.5 W.g(-1)) and high limit oxygen index (LOI) (34.7%), and a V-0 rating in the UL-94 test. Moreover, the PAEP/DDM resin exhibited a remarkably low dielectric constant of 2.25 at 106 Hz for telecommunication applications, which is much lower than the current epoxy resins with nanoporous inorganic modifiers. Therefore, the incorporation of pillar[5]arene is a fruitful pathway to expand the properties of epoxy resins and provides a new platform for decoration for various applications.

服务人员 尚玮姣

服务院士 宋湛谦

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