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首页> 外文期刊>International Journal Precision Engineering Manufacturing-Green Technology >Inkjet Printing of Silica Aerogel for Fabrication of 2-D Patterned Thermal Insulation Layers
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Inkjet Printing of Silica Aerogel for Fabrication of 2-D Patterned Thermal Insulation Layers

机译：用于制造2-D图案隔热层的二氧化硅气凝胶的喷墨印刷

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摘要

Aerogels have the lowest thermal conductivity ( 0.2 W m~(−1) K~(−1)) among known materials owing to the presence of pores, which constitute over 90% of the structure. Aerogels have mainly been commercialized for use as a thermal insulation material for building applications, such as walls and pipes. Herein, a silica aerogel thin film was fabricated by using a commercial and cost-effective HP inkjet printer. Next, silica aerogel ink was synthesized by mixing hydrophilic silica aerogel powder, solvent, and other organic additives. The thickness and pattern of the silica aerogel thin films were easily controlled by increasing the number of printing cycles and patterning by using a drawing software. The printed silica aerogel thin film had a smooth surface and thickness with well-distributed ink particles. Further, the aerogel had a unique structure comprising nanopores and nanonetworks. The thermal conductivity of the silica aerogel thin film was approximately 0.05 W m~(−1) K~(−1)at 30–300 °C. Inkjet printing of silica aerogels is expected to be a strong candidate for thermal insulating applications in micro-scale systems such as batteries and electronic chips.
机译：由于孔隙的存在，Aerogels在已知材料中具有最低的导热率（<0.2Wm〜（-1）k〜（-1）k〜（-1）），其构成了超过90％的结构。 Aerogels主要经过商业化，以用作用于建筑应用的保温材料，例如墙壁和管道。这里，通过使用商业和经济高效的HP喷墨打印机制造二氧化硅气凝胶薄膜。接下来，通过混合亲水性二氧化硅气凝胶粉，溶剂和其他有机添加剂来合成二氧化硅气凝墨油墨。通过使用绘图软件增加印刷循环的数量和图案化来容易地控制二氧化硅气凝胶薄膜的厚度和图案。印刷的二氧化硅气凝胶薄膜具有光滑的表面和厚度，具有良好分布的油墨颗粒。此外，气凝胶具有独特的结构，包括纳米孔和纳米件。二氧化硅气凝胶薄膜的导热率约为30-300℃的约0.05Wm〜（-1）k〜（-1）。预计硅气凝胶的喷墨印刷是用于微级系统中的热绝缘应用的强大候选者，如电池和电子芯片。

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