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首页> 外文期刊>International journal of mechanics and materials in design >Potential of combating transmission of COVID-19 using novel self-cleaning superhydrophobic surfaces: part Ⅱ—thermal, chemical, and mechanical durability
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Potential of combating transmission of COVID-19 using novel self-cleaning superhydrophobic surfaces: part Ⅱ—thermal, chemical, and mechanical durability

机译：使用新型自清洁超疏水表面打击Covid-19传播的潜力：第Ⅱ-热，化学和机械耐久性

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In part I, we identified encapsulation, contamination suppression, and virus elimination as our three governing strategies for developing surfaces to combat the transmission and spread of COVID-19. We showed that our recent superhydrophobic nanocomposites has the potential of encapsulating and suppressing the virus so as to limit its transmission and spread. In this study, we examine the durability of the newly developed surfaces when subjected to elevated temperature, chemical attack and mechanical damage in the form of abrasion and compressive load. Extensive tests were conducted to reveal the effect of these parameters on the surface performance. Three aspects of the work were accordingly examined. The first was concerned with controlled thermal stability tests in which the surfaces were subjected to elevated temperatures approaching 350 degrees C for silicone-based nanocomposites and 150 degrees C for epoxy-based nanocomposites. The second was concerned with subjecting the surfaces to alkaline and acidic solutions with pH concentrations ranging between 1 and 13. Finally, the third involved surface damage by abrasion tests. Our results show clearly that the newly developed superhydrophobic surfaces are capable of resisting the adverse effects of thermal and chemical attacks as well as mechanical abrasion owing to the excellent structural stability and mechanical properties of the constituents of the nanocomposite. Moreover, our superhydrophobic monolith demonstrated exceptional regenerative capabilities even after being subjected to damaging compressive stresses of up to 10 MPa.
机译：在第一部分中，我们确定了封装，污染抑制和病毒消除，作为我们三个制定表面的三种管理策略，以打击Covid-19的传播和传播。我们表明，我们最近的超疏水纳米复合材料具有封装和抑制病毒的潜力，以限制其传动和扩散。在这项研究中，我们在磨损和压缩载荷的形式进行高温，化学攻击和机械损伤时，检查新开发的表面的耐久性。进行广泛的测试以揭示这些参数对表面性能的影响。相应地检查了这项工作的三个方面。首先涉及受控热稳定性试验，其中表面接近350℃的升高的温度，用于硅氧烷基纳米复合材料和150℃，用于环氧基纳米复合材料。第二次涉及在1至13之间的pH浓度范围内对表面进行碱性和酸性溶液的含有碱性和酸性溶液。最后，第三次涉及磨损试验的表面损伤。我们的结果表明，由于纳米复合材料成分的优异结构稳定性和机械性能，新开发的超疏水表面能够抵抗热和化学攻击的不利影响以及机械磨损。此外，我们的超疏水整料甚至在经受高达10MPa的损伤压缩应力后，即使在受损的压缩应力后也表现出出色的再生能力。

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