Hexagonal boron nitride (h-BN) nanosheets have been widely used to create fluids for thermal management applications due to their high thermal conductivity. For better dispersion, h-BN nanosheets were functionalized with hexadecylamine (HDA) to induce the exfoliation of the layered structure of h-BN. It is expected that surface modification provides good compatibility and a good dispersion of h-BN nanosheets in oil-based nanofluid and enhances its thermal conductivity. Modification of h-BN nanosheets was characterized by fourier transform infrared (FT-IR) and thermogravimetric analysis (TGA). Also, the attachment of HDA modifier agent on the surface of h-BN nanosheets was studied using X-ray diffraction (XRD). FT-IR and TGA results indicated that HDA was successfully grafted onto the h-BN nanosheets. In addition, the morphology and crystalline structure of h-BN nanosheets before and after the modification processes were studied by scanning electron microscopy (SEM) and XRD, respectively. The oil-based nanofluid containing 0.05% h-BN nanosheets shows an improvement in thermal conductivity, 36% higher than that for pristine oil.
کلید واژگان :Thermal management, Nanofluids, 2D materials, h-BN nanosheets, Surface modification
ارزش ریالی : 300000 ریال
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جزئیات مقاله
- کد شناسه : 6154322841251432
- سال انتشار : 1395
- نوع مقاله : مقاله کامل پذیرفته شده در کنفرانس ها
- زبان : انگلیسی
- محل پذیرش : سومین همایش ملی تکنولوژی های نوین در شیمی، پتروشیمی و نانو ایران
- برگزار کنندگان : مرکز پژوهش های صنعتی و معدنی
- تاریخ ثبت : 1397/09/05 14:03:32
- ثبت کننده : فرزانه هاشمی نصر
- تعداد بازدید : 174
- تعداد فروش : 0