Growth of copper organophosphate nanosheets on graphene oxide to improve fire safety and mechanical strength of epoxy resins

编号 020038303

推送时间 20230220

研究领域 林产化工 

年份 2022 

类型 期刊 

语种 英语

标题 Growth of copper organophosphate nanosheets on graphene oxide to improve fire safety and mechanical strength of epoxy resins

来源期刊 Chemosphere

期 第383期

发表时间 20230101

关键词 Flame retardancy;  Interfacial engineering;  Mechanical reinforcement;  Eco-friendly;  Epoxy resin; 

摘要 With the high integration of electronic products in our daily life, high-performance epoxy resins (EP) with excellent flame retardancy, smoke suppression, and mechanical strength are highly desired for applications. In this study, copper organophosphate nanosheets were evenly grown on the surface of graphene oxide (GO) via a self-assembly process based on coordination bonding and electrostatic interactions. The resultant nanohybrid endowed EP with satisfactory flame retardant effect and improved mechanical properties. Incorporating functionalized nanosheets of merely 1 wt% loading, the impact strength of the EP nanocomposites improved by 147% when compared to 1% EP-GO. Additionally, the nanosheets inhibited the smoke and heat release of EP, and the limiting oxygen value of EP-EGOPC reached similar to 29%. The mechanism analysis verified that the existence of organophosphate and copper-containing components associated with the physical barrier of GO promoted the hybrid aromatization of the char layer, thereby improving the fire safety of epoxy matrix. This research offers a new interfacial method for designing functional nanosheets with good interface compatibility and high flame-retardant efficiency in polymers.

服务人员 尚玮姣

服务院士 宋湛谦

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