Development of a Zr-Based Metal-Organic Framework (UiO-66) for a Cooperative Flame Retardant in the PC/ABS

Polycarbonate/acrylonitrile butadiene styrene (PC/ABS) blends are widely used as engineering plastic alloys; however, they have a low fire safety level. To improve the flame-retardant property of PC/ABS, a zirconium-based metal-organic framework material (UiO-66) was synthesized with zirconium chlor...

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Bibliographic Details
Published in:Polymers 2024-07, Vol.16 (14), p.2083
Main Authors: Chen, Shaojun, Chen, Zerui, Bi, Weifeng, Du, Wei, Lin, Ling, Hu, Dasong, Zhuo, Haitao
Format: Article
Language:English
Subjects:
ABS resins
Acids
Acrylonitrile butadiene styrene
Fire prevention
Fire protection
Fire resistant materials
Fire safety
Flame retardants
Gases
Ligands
Metal-organic frameworks
Nitrogen
Phosphazene
Polymer blends
Porous materials
Pyrolysis
Spectrum analysis
Terephthalic acid
Thermal stability
Zirconium
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Summary:Polycarbonate/acrylonitrile butadiene styrene (PC/ABS) blends are widely used as engineering plastic alloys; however, they have a low fire safety level. To improve the flame-retardant property of PC/ABS, a zirconium-based metal-organic framework material (UiO-66) was synthesized with zirconium chloride and terephthalic acid and used as a flame-retardant cooperative agent. Its flame-retardant performance and mode of action in the PC/ABS blends were carefully investigated. The results showed that UiO-66 had good thermal stability and delayed the pyrolysis of the materials, thus significantly enhancing the efficiency of intumescent flame retardants. By compounding 7.0 wt% hexaphenyloxy-cyclotri-phosphazene (HPCTP) with 3.0 wt% UiO-66, the PC/ABS blends reached a limiting oxygen index value of 27.0% and V0 rating in the UL-94 test, showing significantly improved resistance to combustion dripping. In addition, UiO-66 enhanced the smoke and heat suppression characteristics of the intumescent flame-retardant materials. Finally, the flame-retardant mode of action in the blends was indicative of UiO-66 having a cooperative effect on the flame-retardant performance of PC/ABS/HPCTP materials. This work provides good ideas for further development of the flame-retardant ABS/PC.
ISSN:2073-4360
2073-4360
DOI:10.3390/polym16142083