文献类型：期刊文献

英文题名：Superhydrophobic surface of glass powder derived from wet milling with aliphatic chemicals modification

作者：Jiang, Qi[1];Zeng, Huidan[1];Liu, Xueliang[1];Yan, Jingtao[1];Li, Ao[1];Zhou, Jiajia[2]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Ultrafine Mat, Minist Educ, Shanghai 200237, Peoples R China;[2]Univ Technol Sydney, Fac Sci, Inst Biomed Mat & Devices IBMD, Sydney, NSW 2007, Australia

年份：2021

卷号：47

期号：20

起止页码：29091

外文期刊名：CERAMICS INTERNATIONAL

收录：;EI(收录号：20213010666279);WOS:【SCI-EXPANDED(收录号:WOS:000696622900005)】；

基金：This work was supported by the National Natural Science Foundation China (NSFC 51872092 and 52072122). Appreciate for academic advices and guidance provided by Dr. Zhengtang Luo from Hongkong University of Science and Technology.

语种：英文

外文关键词：Superhydrophobic surface; Lead aluminosilicate glass; Wet milling; Aliphatics; Semiconductor passivation

摘要：Glass frit has emerged recently as a promising material for incorporation in adhesive of electronic components owing to its high sealing density, environmental stability and easy processing. This requires the glass surface to be hydrophobic to ensure high dispersity, grinding uniformity, and high-temperature sintering performance of the glass frit. However, the glass surface is usually hydrophilic. In this work, we developed a wet milling method to effectively produce hydrophobic glass powder by using aliphatic chemicals modification. We employed a series of aliphatic chemicals containing nucleophilic functional groups to prepare ultrafine lead aluminosilicate electronic glass powders. The nucleophilic substitution reaction of amino groups, carboxylic acid groups, hydroxyl groups and phosphoric acid groups reduces the hydroxyl content on the surface of the glass powder to 0.10 mg/m(2), and generates steric hindrance and hydrophobicity (contact angle: 153.0 degrees) through the long carbon chain. The obtained powder therefore shows a uniform particle size distribution, anti-agglomerated property, and maximum 25 degrees C lower hemispheric point temperature compared to powder prepared by conventional hydrophilic milling method. This work provides a versatile method to simultaneously control the structural and surface properties of glass powders at their formation stage.