基于分散在 1,2-丙二醇和 50-50 水基 1,2-丙二醇中的氨基官能化二氧化硅的导热流体

Marta Kalbarczyk, Sebastian Skupiński, Marek Kosmulski
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引用次数: 0

摘要

1,2 丙二醇及其与水的 50-50 w/w 混合物被用来制备基于氨基功能化二氧化硅的导热液体。在 pH 值中性分散液(除溶剂和颗粒外未添加任何试剂)的基础上,使用醋酸和盐酸酸化分散液来增强二氧化硅颗粒的正电荷。胶体颗粒的正 Zeta 电位大于 40 mV,颗粒表观半径为 70 nm,这些特性在加热至 80 °C 长达 28 天后保持不变。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Heat Transfer Fluids Based on Amino-Functionalized Silica Dispersed in 1,2-Propylene Glycol and in 50-50 Aqueous 1,2-Propylene Glycol
1,2-propylene glycol and its 50-50 w/w mixture with water were used to prepare heat transfer fluids based on amino-functionalized silica. On top of pH-neutral dispersions (no reagents added except for the solvent and the particles), dispersions acidified with acetic acid and with HCl were used to enhance the positive electric charge of silica particles. The colloidal particles had a positive zeta potential >40 mV and showed apparent particle radii of 70 nm, and these properties remained unchanged on heating up to 80 °C for up to 28 days.
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