کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5432160 1508831 2017 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Heavily aluminated graphene nanoplatelets as an efficient flame-retardant
ترجمه فارسی عنوان
نانوپلاستیک های گرافن به طور معکوس به عنوان یک شعله بازدارنده کارآمد است
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی (عمومی)
چکیده انگلیسی

Substantial amounts of aluminum (Al), which is one of the most abundant elements and period III post-transition metals, can be incorporated into graphene nanoplatelets (GnPs) by ball-milling graphite in the presence of solid Al beads. After thoroughly etching away any unreacted Al residues, the structure and properties of the resultant aluminated GnPs (AlGnPs) were characterized using various analytical techniques including transmission electron microscopy (TEM) and time-of-flight secondary ion mass spectroscopy (TOF-SIMS). The results indicate that AlGnPs contain a considerable amount of Al (30.9 wt%, by TEM energy dispersive X-ray spectrum) and display good dispersibility in various solvents, including water. Next, composite films from aqueous AlGnP/poly(vinyl alcohol) (1/4, wt/wt) solutions were cast and tested for flame retardation. The results indicate that AlGnPs could serve as an outstanding flame retardant that operates by both chemical (condensation) and physical (cooling and blocking) mechanisms. This suggests that AlGnPs may provide a promising option for a new, cost-effective, eco-friendly, yet efficient flame retardant.

Heavily aluminated graphene nanoplatelets (AlGnPs) are produced by mechanochemical ball-milling of graphite with solid aluminum beads. AlGnPs show outstanding flame retardancy via chemical and physical flame retardation mechanisms. Hence, AlGnPs provide a very promising option for cost-effective, eco-friendly, efficient flame retardants.282

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbon - Volume 116, May 2017, Pages 77-83
نویسندگان
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