کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7886296 | 1509785 | 2018 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Novel self-reinforcing ZrO2-SiO2 aerogels with high mechanical strength and ultralow thermal conductivity
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Novel self-reinforcing ZrO2-SiO2 aerogels with high mechanical strength and ultralow thermal conductivity are fabricated by impregnating hydrolyzed ZrO2-SiO2 sol into wet gel matrix and drying. The ZrO2-SiO2 sol fills the macropores and defects of ZrO2-SiO2 aerogel matrix generating during the gelation process, which contributes to the improvement of the mechanical properties of the ZrO2-SiO2 aerogel matrix. The mechanical and thermal properties of the as-prepared ZrO2-SiO2 aerogel are investigated and discussed. The results show that the mechanical strength of the self-reinforcing aerogels obviously increases from 0.51 to 3.11â¯MPa with the increase of impregnation times, while the thermal conductivity of the aerogels slightly increases from 0.0235 to 0.0306â¯Wâ¯mâ1 Kâ1. The novel self-reinforcing ZrO2-SiO2 aerogel could have interesting applications in aerospace and energy because of its outstanding mechanical and thermal properties.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 44, Issue 13, September 2018, Pages 15440-15445
Journal: Ceramics International - Volume 44, Issue 13, September 2018, Pages 15440-15445
نویسندگان
Xianbo Hou, Rubing Zhang, Baolin Wang,