کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7053052 | 1457463 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Experimental investigation of dispersion characteristics and thermal conductivity of various surfactants on carbon based nanomaterial
ترجمه فارسی عنوان
بررسی تجربی ویژگی های پراکندگی و هدایت حرارتی سورفاکتانت های مختلف بر روی نانومواد کربن
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کلمات کلیدی
نانوفیلد ها، نانوذرات، هدایت حرارتی، سورفاکتانت، پراکندگی، ثبات،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
چکیده انگلیسی
The surfactants sodium dodecyl benzene sulfonate (SDBS), sodium dodecyl sulfate (SDS), and dodecyl betaine (DB) are used in graphene and carbon nano-tube (CNT) aqueous solutions, to develop an improved method that increases dispersion, creates long-term stability, and increases thermal characteristics. To evenly disperse the nanoparticles in the base liquid, an ultrasound was applied for 40Â m. The nanoparticle dispersion of solutions was compared using UV spectroscopy. Zeta potential was used to indicate the colloidal stability of each solution. The thermal conductivities of the nanofluid solutions were measured using a transient hot wire method, and the three different surfactants were compared Good stability and nanoparticle dispersion was observed for nanofluids with surfactants. However, the thermal conductivities of the nanofluid solutions decreased with increasing surfactant concentrations. Carbon-based nanofluids with SDS had better thermal conductivity than nanofluids with other surfactant dispersants. We found the nanofluid has less weight percent of surfactant have better heat transfer than without surfactant. However, DB produced better dispersion than other surfactants, and carbon-based nanofluids with SDBS and SDS have anionic surfactant both had a better stability than nanofluids has amphoteric surfactant DB.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Communications in Heat and Mass Transfer - Volume 91, February 2018, Pages 95-102
Journal: International Communications in Heat and Mass Transfer - Volume 91, February 2018, Pages 95-102
نویسندگان
Sedong Kim, Baasandulam Tserengombo, Soon-Ho Choi, Jungpil Noh, Sunchul Huh, Byeongkeun Choi, Hanshik Chung, Junhyo Kim, Hyomin Jeong,