Crosslinked polybenzoxazine coatings with hierarchical surface structures from a biomimicking process exhibiting high robustness and anticorrosion performance
Crosslinked polybenzoxazine coatings with hierarchical surface structures from a biomimicking process exhibiting high robustness and anticorrosion performance
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DOI：
10.1016/j.polymer.2018.09.039
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发表时间：
2018-10
期刊：
影响因子：
4.6
通讯作者：
Susan Zachariah;T. Chuo;Ying‐Ling Liu
中科院分区：
文献类型：
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作者：
Susan Zachariah;T. Chuo;Ying‐Ling Liu
在这项工作中，可交联的聚苯并恶嗪（PBz）具有高表面覆盖能力、与金属基体的强附附性和致密的交联结构，耐腐蚀分子渗透，已被证明是一种有效的单组分防腐剂。普通交联pbz基防腐涂料的防护效率为96.3%。以荷叶为模板，通过仿生工艺将分层表面结构和疏水性引入到防腐涂层中，从而将防护效率提高到99.93%的极高水平。交联PBz涂层具有层次化的表面结构和表面疏水性，是一种高效的防腐涂料。此外，还利用矢状叶黄豆叶制备了仿生防腐涂层，探讨了模板效应对仿生涂层防腐效果的影响。荷叶是制备仿生防腐涂层的较好材料，而不是矢状叶黄菌叶。
In this work, crosslinkable polybenzoxazine (PBz), which exhibits high surface-covering ability, strong adhesion to metal substrates, and a dense crosslinked structure resistant to corrosion molecule permeation, has been demonstrated as an effective agent for single-component anticorrosion application. Plain crosslinked PBz-based anticorrosion coating shows a protection efficiency of 96.3%. Hierarchical surface structures and hydrophobicity have been introduced to the anticorrosion coatings through a biomimicking process using lotus leaves as templates, and so as to increase the protection efficiency to an extremely high level of 99.93%. Crosslinked PBz coatings with a hierarchical surface structure and surface hydrophobicity are highly effective for anticorrosion application. Moreover, biomimicking anticorrosion coatings have also been prepared with xanthosoma sagittifolium leaves to probe the template effect on the anticorrosion efficiency of the biomimicking coatings. Lotus leaves, rather than xanthosoma sagittifolium leaves, are the better choice for fabrication of the biomimicked anticorrosion coatings.