کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5441564 1510393 2016 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Organically modified silica aerogel with different functional silylating agents and effect on their physico-chemical properties
ترجمه فارسی عنوان
آلیاژل سیلیکا اصلاح شده ارگانیزم با عامل های مختلف عملکرد سیلیتیک و اثر آن بر خواص فیزیکی و شیمیایی آنها
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
چکیده انگلیسی
In this paper, we have successfully focused on a hydrophobic silica aerogels synthesis by the ambient drying of silica gels and the silylation with mono-, di-, and tri-functional agents was studied to improve physico-chemical properties of the aerogels. Silylated silica aerogels with water contact angles 161 ± 2°, 152 ± 3°, 147 ± 3° were obtained using trimethylchlorosilane, dimethyldichlorosilane, and methyltrimethoxysilane as a mono-, di- and tri-functional silylation reagents, respectively. The prepared mono-functional silylated silica aerogels exhibited relatively high thermal stability, low thermal conductivity, transparency, high porosity, and enhanced superhydrophobicity with low surface free energy making them suitable as multifunctional for many domestic and industrial applications. Our mono-functional silylated silica aerogels showed superior physico-chemical properties compared with di- and tri-functional silylated silica aerogels.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Crystalline Solids - Volume 453, 1 December 2016, Pages 164-171
نویسندگان
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