کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5022168 | 1469478 | 2017 | 25 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Flexible, elastic, and superhydrophobic silica-polymer composite aerogels by high internal phase emulsion process
ترجمه فارسی عنوان
آلیاژل های کامپوزیتی سیلیکا پلیمرهای انعطاف پذیر، الاستیسیته و سوپر هیدروافوبی با استفاده از فاز امولسیون فاز داخلی
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کلمات کلیدی
روشهای سل ژل، کامپوزیت انعطاف پذیر، خواص انعطاف پذیر، خواص حرارتی،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی (عمومی)
چکیده انگلیسی
Flexible, elastic, low density, superhydrophobic, and low thermal conductive silica-polymer composite aerogel materials were prepared by a high internal phase emulsion (HIPE) process followed with sol-gel process. Flexible silica aerogels were grown in the scaffold of macro-porous flexible polymer monolith to overcome the brittle nature of silica aerogels. Initially, porous polymer monolith was prepared by HIPE and was used as a scaffold for preparation of flexible silica aerogels by sol-gel process followed by supercritical drying. Polymer monolith was soaked in a pre-hydrolyzed methyltrimethoxysilane (MTMS) based silica sol and gelation was achieved by two step sol-gel process. Composite monolith possess extreme properties such as high flexibility, elasticity, superhydrophobicity (165°), low density (0.045 g/cm3) and thermal conductivity (0.040 W/m·K). This novel way of preparation allows us to overcome the fragile nature of MTMS based flexible silica aerogels while maintaining textural, physical, and functional properties. Hence such materials are highly useful for corrosion resistant thermal insulation in various fields.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composites Science and Technology - Volume 147, 28 July 2017, Pages 45-51
Journal: Composites Science and Technology - Volume 147, 28 July 2017, Pages 45-51
نویسندگان
Dinesh B. Mahadik, Hae-Noo-Ree Jung, Wooje Han, Hyung Hee Cho, Hyung-Ho Park,