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博主胡德良:邢台学院外语系英语教授,中国译协专家会员,河北省译协常务理事,邢台市译协副会长。爱好翻译,内容涉及宇宙探秘、医疗卫生、家庭保健、生命科学、能源科学、地球科学、环境科学、散文小说和纪实文学等领域。所译文章曾见于《光明日报》《科技日报》《健康时报》《健康报》《英语世界》《英语知识》《科技英语学习》《科学之友》《科学与文化》《世界科学》《生命世界》等全国各大报刊。博客特色:英汉对照、图文并茂,融趣味性、科学性、知识性为一体。

玻璃洁净不结雾(图)  

2007-12-29 13:03:05|  分类: 尖端科技 |  标签: |举报 |字号 订阅

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玻璃洁净不结雾(图) - 月亮飞船 - 月亮飞船的博客

Jeffrey Youngblood

New Coating Keeps Glass Clean and Fog-free

                                             By Melinda Wenner  胡德良

 Foggy windshields and dirty sunglasses could soon be things of the past, thanks to a new glass coating developed by scientists at Purdue University.   太阳镜片不洁静和风挡玻璃结雾滴将很快成为过去之事,这多亏普渡大学的科学家研制的新型玻璃涂层。
 The property of glass that makes smudges difficult to remove is the same one that causes it to fog easily — a fatal attraction to grease. Oils stick more strongly to glass than water, and when water ends up on a pair of ski goggles that haven’t recently been cleaned, it tends to bead up on the oil that's stuck to the glasses. These water droplets then scatter light, creating a foggy appearance.  玻璃的特性使其容易结雾,容易招致油脂,而形成的污渍又难以清除。油脂比水更易粘在玻璃上,如果一副滑雪镜近期没有清洗,镜片上会沾染油脂,若再遇到水汽,水汽往往在油脂上结成小滴,这些小水滴使光线发生散射,形成雾态外观。
 If glass were coated with something that made it attract water more strongly than oil, however, then both of these annoying problems could be solved, realized Jeffrey Youngblood, an associate professor of materials engineering at Purdue.  普渡大学的物料工程副教授杰弗里·扬布拉德意识到:如果在玻璃上涂上一层东西,使其更容易吸引水,而不易吸油脂,那么这个令人烦恼的问题就可以解决了。
 So Youngblood and postgraduate student John Howarter went to work, eventually developing a coating made of two layers. The bottom layer, consisting of a water-loving solvent called polyethylene glycol, pulls water in. The top surface contains a Teflon-like molecule that is large enough to prevent oil from passing through. The net result is that water coats the surface, forming a smooth thin layer rather than beading up, and oil is repelled — no smudges, no fog.  这样,扬布拉德和研究生约翰·豪沃特开始研究了,最终研制出包括两层的涂层:底层包含一种叫做聚乙二醇的亲水剂,能够将水吸进来;上层包含一种类似聚四氟乙烯的分子,这种大分子足以阻拦油脂的通过。水汽覆盖在表面时形成平滑的薄层而不会结滴,油脂却被排除在外。最后结果则是:没有污垢,没有雾滴。
 Most of the testing was done on glass surfaces, but Youngblood said preliminary studies show it should work on plastic lenses, too.  绝大多数试验是在玻璃表面上进行的,但扬布拉德说初步研究表明这项技术在塑料透镜上也应该能行得通。
 “Anybody who’s gone [snow] skiing could realize the potential importance of being able to do that,” said Kent Kirshenbaum, a chemist at New York University who was not involved in the research.  纽约大学的化学家肯特·柯申鲍姆没有参与此项研究,但他指出:“任何滑过雪的人都会意识到这项研究潜在的重要性。”
 The coating has another major plus, too — it is self-cleaning.  这种涂层还有一个主要的优点,它具有自洁净性能。
 “You add water, and the oil just comes right off,” Youngblood told LiveScience. When water is added to the surface, it is pulled to the bottom layer, literally moving underneath the oil and displacing it.  “一冲水,油渍立刻就被冲掉,” 扬布拉德告诉《生活科学网》的记者说。当水冲到玻璃表面上时,水被吸入底层,实际上就是渗到油脂的下面,并取代了油脂的位置。
 In addition to windshields, mirrors, and eyeglasses, the coating could also be used in water filters, Youngblood said, because the coating allows water, but not oil, to pass through. His experiments have shown that filters treated with the coating remove 95 percent of oily contaminants, compared to only 5 percent in untreated filters.  扬布拉德指出,除了风挡玻璃、镜子和眼镜之外,这项技术还可用于水过滤器,因为水可以透过该涂层,油脂却不能透过。实验证明,用该涂层处理过的过滤器可以滤掉百分之九十五的油污,而未经处理的过滤器仅仅滤掉百分之五的油污。
 Although it may be four or five years before a product ends up on store shelves, Youngblood envisions that when it does, it will be in the form of a solution that could be sprayed onto bathroom mirrors and sunglasses every couple of weeks to keep them clean and fog-free.  扬布拉德预想,或许再过四五年的时间该技术产品就会摆在商店的货架上,产品将是一种溶液,每隔两周可以在浴室镜和太阳镜上喷一喷,以保持其洁净而不结雾。

 译自:? 2007 LiveScience.com

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