کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5456004 | 1514647 | 2017 | 26 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The enhanced thermal and mechanical properties of graphite foams with a higher crystallinity and apparent density
ترجمه فارسی عنوان
خواص حرارتی و مکانیکی فوم گرافیت با بلورینگی بالاتر و تراکم ظاهری
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کلمات کلیدی
فوم گرافیتی، پرکننده ها، پراش اشعه ایکس، استحکام فشاری، هدایت حرارتی،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
دانش مواد (عمومی)
چکیده انگلیسی
Graphite powder, which has a highly graphitic structure, is used as filler material in the preparation of graphite foams (GFms) and enhances the foams' thermal-mechanical properties. GFms are prepared using the hydrogel template method with mesophase pitch, polyvinyl alcohol-acrylic acid (PVA-AAc) solution and graphite powder. GFms containing 0.3 w/w% added graphite exhibit as much as an 11.18% increase in crystalline thickness (Lc) compared to that of the sample without graphite powder. These increased crystalline thicknesses of GFms result in thermal conductivity increases as high as 59.30%. Furthermore, the compressive strength is increased by as much as 120.52% compared to that of the sample without graphite powder, and the apparent density is increased by as much as 4.05%. The average pore size of the GFms is controlled by the amount of graphite powder, which affects the GFms' cell growth mechanism. These results revealed that the thermal-mechanical properties of GFms containing graphite powder with a highly graphitic structure were strongly affected by the GFms' crystalline thickness and apparent density.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Science and Engineering: A - Volume 696, 1 June 2017, Pages 174-181
Journal: Materials Science and Engineering: A - Volume 696, 1 June 2017, Pages 174-181
نویسندگان
Ji-Hyun Kim, Hyung-Ik Lee, Young-Seak Lee,