Durable superamphiphobic nano-silica/epoxy composite coating via coaxial electrospraying method
Durable superamphiphobic nano-silica/epoxy composite coating via coaxial electrospraying method
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DOI：
10.1016/j.apsusc.2017.11.241
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发表时间：
2018-04
影响因子：
6.7
通讯作者：
Xiaoyan Li;Hui Li;Kai Huang;Hua Zou;Yu Dengguang;Ying Li;Biwei Qiu;Xia Wang
中科院分区：
文献类型：
--
作者：
Xiaoyan Li;Hui Li;Kai Huang;Hua Zou;Yu Dengguang;Ying Li;Biwei Qiu;Xia Wang
本研究成功制备了一种具有良好耐环境性能的超双疏性纳米二氧化硅/环氧树脂复合涂层。采用原位溶胶-凝胶法制备了低表面能的含氟纳米SiO_2，其在溶液中能稳定分散。以含氟纳米SiO2分散液为鞘层，环氧树脂溶液为芯层，采用同轴电喷涂方法制备了含氟纳米SiO2/环氧树脂超双疏复合涂层。纳米尺寸均匀的含氟纳米SiO2均匀分布在环氧树脂微粒子上，呈现出特殊的微纳分级结构。纳米压痕测试结果表明，氟化纳米SiO2/环氧树脂复合涂层的模量和硬度较环氧树脂基体有明显提高。此外，通过进行苛刻的化学环境浸泡和透明胶带测试来评估超双疏涂层的耐久性。
In this study, a durable superamphiphobic nano-silica and epoxy composite coating with good environment resistant was successfully fabricated. Fluorinated nano-silica with low surface energy was prepared by in situ sol-gel method, which can be stably dispersed in the solution. Applying fluorinated nano-silica dispersion as sheath and epoxy solution as core, fluorinated nano-silica/epoxy superamphiphobic composite coating was prepared by a coaxial electrospraying method. Fluorinated nano-silica with uniform nano-size was distributed evenly on the micro epoxy particles, showing a special micro-nano hierarchical structure. Nano-indentation shows evident improvement in modulus and hardness of fluorinated nano-silica/epoxy composite coating than that of raw epoxy. In addition, durability of the superamphiphobic coating was assessed by performing harsh chemical environments immersion and scotch tape test.