Facile Fabrication of organic zirconium/inorganic phosphorus complex for super-efficiently flame-retardant epoxy resin. (December 2022)

• Record Type: Journal Article
• Authors: Shao, Zhu-Bao; Song, Xiang; Wang, Tian-Ci; Cui, Jing; Ye, Wen; Xu, Baoyun; Wang, De-Yi
• Is Part Of: Composites communications. Volume 36(2022)
• Publication Date: 2022-12
• Subjects: Flame retardancy -- Organic zirconium -- Synergistic effect
• DOI: 10.1016/j.coco.2022.101360
• Languages: English
• ISSNs: 2452-2139

Abstract

Abstract: To obtain the super-efficiently flame retardants containing metal elements for epoxy resin, a novel facile constructing strategy is obtained through in-situ coprecipitation reaction, then the resultant organic zirconium/inorganic phosphorus complex (PTA-Zr@APP) is used alone to flame retard epoxy resin (EP). Notably, the resulted EP merely with 3 wt% PTA-Zr@APP displays the UL-94 V0 level and strong suppression on the heat release and smoke production. Besides excellent catalytic charring of PTA-Zr@APP/EP, more gaseous noncombustible substances, such as aromatic compounds, etc. are generated during combustion comparing with Zr@APP (APP modified by zirconium chloride). Consequently, the excellent synergistic action between catalytic charring and gaseous dilution results in the satisfactory fire safety of EPs. Graphical abstract: Image 1 Highlights: The organic zirconium chemically modified ammonium polyphosphate (PTA-Zr@APP) was prepared. Heat release and smoke production of PTA-Zr@APP/EP were greatly decreased. PTA-Zr@APP enhanced the mechanical performance of EP. PTA-Zr@APP exerted the synergistic catalytic charring and gaseous dilution of EP.