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Graphene Paints a Corrosion-FreeFuture石墨烯描绘了一个永不腐蚀的未来
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MANCHESTER, England - A thin layer ofgraphene paint can make impermeable and chemically resistant coatings thatcould be used for food packaging and corrosion protection, according to newfindings from researchers at The University of Manchester in England.
英国曼彻斯特—根据英国曼彻斯特大学的研究人员的新发现，一薄层的石墨烯涂料可生成不透水和抗化学腐蚀的涂层，能用于食品包装盒防腐保护。
The surface of graphene, a one-atom-thicksheet of carbon, can be randomly decorated with oxygen to create grapheneoxide, a form of graphene that could have a significant impact on the chemical,pharmaceutical and electronic industries. Applied as paint, it could provide anultra-strong, non-corrosive coating for a wide range of industrialapplications.
石墨烯的表面，单原子厚度的碳，可以与氧随意地组合来生成氧化石墨烯，这是一种可能对化学、制药和电子工业产生巨大影响的石墨烯形式。用作涂料，它能为大规模的工业用品提供极强、无腐蚀的涂层。
Graphene oxide solutions can be used topaint various surfaces ranging from glass to metals to even conventionalbricks. After a simple chemical treatment, the resulting coatings behave likegraphite in terms of chemical and thermal stability but become mechanicallynearly as tough as graphene, the strongest material known to man.
The team, led by Dr. Rahul Nair and NobelLaureate Sir Andre Geim, demonstrated previously that multilayer films madefrom graphene oxide are vacuum tight under dry conditions but, if expose towater or its vapor, act as molecular sieves allowing passage of small moleculesbelow a certain size.
石墨烯氧化物的解决方案能用来作为从玻璃到金属，甚至到传统的砖等各种表面的涂层。在经过简单的化学处理后，产生的涂层在化学和热稳定性上的表现像石墨，但在机械性能上几乎像人类所知的最硬的材料，石墨烯，一样坚硬。由Rahul Nair博士和诺贝尔奖获得者Andre Geim先生领导的团队先前演示过由石墨烯氧化物构成的多层薄膜，在干燥环境下是真空密封的，但当暴露于水与水蒸气时，则表现的像分子筛，允许小于一定尺寸的小分子通过。
This contrasting property is due to thestructure of graphene oxide films that consist of millions of small flakesstacked randomly on top of each other but leave nano-sized capillaries betweenthem. Water molecules like to be inside these nanocapillaries and can dragsmall atoms and molecules along.
这种性质的巨大差异归因于石墨烯氧化物薄膜的结构，其由数百万个小鳞片随意地堆叠在一起，但它们之间留有纳米级大小的毛细管。水分子能渗入这些纳米毛细管，并拖动一些小原子和分子一起进入。
In an article published in NatureCommunications, the University of Manchester team shows that it is possible totightly close those nanocapillaries using simple chemical treatments, whichmakes graphene films even stronger mechanically as well as completelyimpermeable to everything: gases, liquids or strong chemicals. For example, theresearchers demonstrate that glassware or copper plates covered with graphenepaint can be used as containers for strongly corrosive acids.
在发表于《自然通讯》的一篇文章中，曼彻斯特大学的团队表明用简单的化学处理紧紧地关闭这些纳米毛细管是可能的，这会使石墨烯薄膜机械性能上甚至更强大，同时不渗透任何物质：气体、液体和强力化学品。例如，研究人员演示覆盖了石墨烯涂层的玻璃器皿或铜盘能用作强腐蚀性酸的容器。
The exceptional barrier properties ofgraphene paint have already attracted interest from many companies who nowcollaborate with The University of Manchester on development of new protectiveand anticorrosion coatings.
Dr. Nair commented, “Graphene paint has agood chance to become a truly revolutionary product for industries that dealwith any kind of protection either from air, weather elements or corrosivechemicals. Those include, for example, medical, electronics and nuclearindustry or even shipbuilding, to name but the few.”
石墨烯涂层的特殊的隔离特性已经吸引了很多公司的兴趣，他们现在与曼彻斯特大学合作来研发防护和防腐涂料。Nair博士评论道，“石墨烯涂料很有机会成为工业上一个真正意义上的创新产品，能提供各种防护，无论是空气、天气因素或腐蚀性的化学品。仅列几个应用的例子，医药、电子、核工业、甚至是造船业。”
Dr. Yang Su, the first author in thepublication, commented, “Graphene paint can be applied to practically anymaterial, independently of whether it’s plastic, metal or even sand. Forexample, plastic films coated with graphene could be of interest for medicalpackaging to improve shelf life because they are less permeable to air andwater vapor than conventional coatings. In addition, thin layers of graphenepaint are optically transparent.”
该论文的首席作者YangSu博士评论道，“石墨烯涂料实际上能用于任何原料，不论是塑料、金属、甚至是沙子。例如，涂有石墨烯的用于药品包装的塑料薄膜能提高药品的保存期限，因为其比传统的涂层更能抵御空气和水蒸气的侵蚀。另外，石墨烯涂料的薄涂层是光学上透明的。
