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仿生超疏水PVDF膜的制备与表征 被引量:5
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作者 姚连珍 杨文芳 +2 位作者 梁庆忠 余少琦 李秋瑾 《化工新型材料》 CAS CSCD 北大核心 2014年第12期195-198,共4页
以荷叶效应为理论基础,探讨了基于模板法的防污自洁PVDF膜的制备。重点研究了表面粗糙度及粗糙表面的表面能对PVDF膜拒水及拒油性能的影响。采用静态接触角及滚动角、集灰实验表征PVDF膜的自清洁性能,并利用扫描电子显微镜(SEM)观察分... 以荷叶效应为理论基础,探讨了基于模板法的防污自洁PVDF膜的制备。重点研究了表面粗糙度及粗糙表面的表面能对PVDF膜拒水及拒油性能的影响。采用静态接触角及滚动角、集灰实验表征PVDF膜的自清洁性能,并利用扫描电子显微镜(SEM)观察分析膜表面的形貌。结果表明:由模板法制备的膜表面的粗糙度对静态接触角有很大的影响,合适的表面微凸体直径能够增大接触角,PVDF膜表面静态接触角可达152°;掺杂低表面能物质的膜的接触角随表面能的减小而增大,其静态接触角高达168°,滚动角约为2°;集灰实验结果表明,水滴能将膜表面的灰尘带走,证明本实验赋予了PVDF膜良好的防污自洁性能。 展开更多
关键词 聚偏氟乙烯(PVDF) 荷叶效应 模板 低表面能 防污自洁
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Anti-hydration Magnesia-spinel Bricks in Cement Industry
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作者 Somkeat SUEBTHAWILKUL Nichapat PATCHARARUNGRUANG +1 位作者 Thanapong PRASERTPHOL Chanvit CHAWENGKUL 《China's Refractories》 CAS 2017年第2期13-16,共4页
Hydration cracks of magnesia-spinel bricks in cement industry have been serious problems for both refractory producers and refractory users for a long time.When magnesia-spinel bricks are kept for more than 6months,th... Hydration cracks of magnesia-spinel bricks in cement industry have been serious problems for both refractory producers and refractory users for a long time.When magnesia-spinel bricks are kept for more than 6months,the bricks tend to have reaction with water or moisture and result in cracks and loss on their structural strength. Those bricks cannot be used anymore and cause substantial loss for the related parties. In 2013,the Siam Refractory Industry Co.,Ltd.,Thailand,successfully developed and applied a special nano-technology to create "Anti-Hydration Magnesia-Spinel Bricks " for cement industry which can have the storage time more than two years even in high humidity areas. The cement producers can ensure that all bricks still have good properties as the new ones. 展开更多
关键词 hydration anti-hydration magnesia -spinel brick cement kiln NANO-TECHNOLOGY lotuseffect
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