Synthesis of silica aerogel blanket by ambient drying method using water glass based precursor and glass wool modified by alumina sol

2008 ◽  
Vol 354 (34) ◽  
pp. 4115-4119 ◽  
Author(s):  
J. Chandradass ◽  
Sung Kang ◽  
Dong-sik Bae
2017 ◽  
Vol 82 (2) ◽  
pp. 594-601 ◽  
Author(s):  
Yuelei Pan ◽  
Song He ◽  
Xudong Cheng ◽  
Zhi Li ◽  
Congcong Li ◽  
...  

2017 ◽  
Vol 726 ◽  
pp. 199-203 ◽  
Author(s):  
Da Sun ◽  
Xue Ye Sui ◽  
Chang Ling Zhou ◽  
Nai Hong Han ◽  
Fu Tian Liu

In this experiment, silica sol was used as raw material, the mixture of ammonium chloride and ammonia was used as coagulant. After replacing the solvent with n-hexane, silica aerogel was obtained under the condition of normal pressure. The influence of sol pH and coagulating temperature on the gel time was studied. According to the SEM photographs, the influence of drying temperature from 30 °C to 60 °C on the microstructure of silica aerogel was analyzed. This study showed that when sol pH was 6.5, coagulating temperature was 80 °C and the concentration of ammonia was 0.4 mol/L, the gel time was the shortest. The average size of silica aerogel particles was 10-20 nm, the average size of apertures was 20-50 nm. When the drying temperature was 40 °C, the specific surface area was 402.41 m2/g, the pore volume was 2.33 cm3/g, the density was 0.18 g/cm3.


2020 ◽  
Vol 1535 ◽  
pp. 012049
Author(s):  
Nor Fadilah Mohamad ◽  
Noor Hidayu Abdul Rani ◽  
Omar Syah Jehan Elham ◽  
Siti Hajar Anaziah Muhamad ◽  
Siti Afifah Muda ◽  
...  

2006 ◽  
Vol 96 (1-3) ◽  
pp. 237-244 ◽  
Author(s):  
Sharad D. Bhagat ◽  
Yong-Ha Kim ◽  
Young-Soo Ahn ◽  
Jeong-Gu Yeo

2013 ◽  
Vol 57 ◽  
pp. 200-206 ◽  
Author(s):  
Tomasz Błaszczyński ◽  
Agnieszka Ślosarczyk ◽  
Maciej Morawski

2005 ◽  
Vol 12 (4) ◽  
pp. 317-321 ◽  
Author(s):  
Lihua Gan ◽  
Zijie Xu ◽  
Ying Feng ◽  
Longwu Chen

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