کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5440821 | 1398238 | 2016 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
High strength metakaolin-based geopolymer foams with variable macroporous structure
ترجمه فارسی عنوان
فوم های ژئوپلیمر بر پایه متاکائولین با ساختار متغیر بزرگ پوپور
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کلمات کلیدی
فوم ژیوپلیمر، ساختار بزرگ جوان سازی قطر بینی،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
چکیده انگلیسی
Metakaolin-based geopolymer foams were synthesized by mechanical frothing, using hydrogen peroxide as additional foaming agent; three vegetable oils were added in order for the saponification reaction to occur. The combined use of the two foaming techniques (mechanical frothing and H2O2 decomposition) led to interconnected porosity: the in-situ formation of the soap molecules generated by the saponification reaction was exploited to generate macro-porosity. This combined route enabled the production of geopolymer foams with a range of total porosity and strength values, with an optimal sample possessing a total porosity of to â¼81Â vol%, an open porosity of â¼79Â vol%, and a compressive strength of â¼3.1Â MPa. Moreover, factors that influence the compressive strength, the porosity, and the pore size distribution were investigated. The results showed that the cell size and cell window size can be controlled by adding different oils and different contents of peroxide.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the European Ceramic Society - Volume 36, Issue 16, December 2016, Pages 4243-4249
Journal: Journal of the European Ceramic Society - Volume 36, Issue 16, December 2016, Pages 4243-4249
نویسندگان
Chengying Bai, Giorgia Franchin, Hamada Elsayed, Alberto Conte, Paolo Colombo,