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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Effects of processing variable on melamine-formaldehyde aerogel formation
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Effects of processing variable on melamine-formaldehyde aerogel formation

机译：工艺变量对三聚氰胺-甲醛气凝胶形成的影响

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摘要

Optical and structural properties of melamine-formaldehyde (MF) aerogels have been studied by transmittance spectroscopy. By combining the two-phase model with Rayleigh model, the correlation length of the void phase and the mean particle size of MF aerogels prepared from aqueous melamine-formaldehyde solutions at concentration in weight of 10% and 12%, and pH of 2.3, 2.0, 1.8, and 1.5, were estimated. Correlation of the correlation length, the particle size and the visible integrated transmittance on the concentration and the pH has been established. Optical transparency of the dried MF aerogels depends strongly on the concentration of the precursor and the gelation temperature than the solution pH. (C) 1998 Elsevier Science B.V. All rights reserved. [References: 17]
机译：已通过透射光谱研究了三聚氰胺-甲醛（MF）气凝胶的光学和结构性质。通过将两相模型与瑞利模型相结合，可以得出由浓度为10％和12％的三聚氰胺-甲醛水溶液，pH值为2.3、2.0的MF气凝胶的空隙相的相关长度和平均粒径。分别为1.8和1.5。已经建立了相关长度，粒径和可见的积分透射率与浓度和pH的相关性。干燥的MF气凝胶的光学透明性在很大程度上取决于前体的浓度和胶凝温度，而不是溶液的pH值。 （C）1998 Elsevier Science B.V.保留所有权利。 [参考：17]

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