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- W2353398544 abstract "SiO2-aerogel nanoporous super thermal insulation material is prepared via sol-gel method and ethanol supercritical drying.The influence of the pH value of the original hydrogel,the ratio of EtOH/TEOS and H2O/TEOS on the gelling time,pore distribution and porous structure of aerogel are investigated.The results show that the ratio of EtOH/TEOS has distinct effect on the SiO2-aerogel.The gelling time is prolonged with the increase of the water,and the pore distribution and porous structure of aerogel are tending to become homogeneous.For the diluted function of the ethanol,the gelling time is increased with the increase of the ethanol,and the effect on the pore distribution and porous structure is moderate.When the pH value is less than 8.5,the gelling time is shortened with the increase of the pH,and the pH value has a mild influence on the pore of aerogel.But when the pH value is more than 8.5,the effect becomes intense,the gelling time is increased with the increase of the pH sharply,and the pore distribution broadens out rapidly at this point." @default.
- W2353398544 created "2016-06-24" @default.
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- W2353398544 date "2009-01-01" @default.
- W2353398544 modified "2023-09-28" @default.
- W2353398544 title "Preparation and Porous Structure Characterization of SiO_2-aerogel" @default.
- W2353398544 hasPublicationYear "2009" @default.
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