生产彩色塑料更环保的方式
文章来源:未知 文章作者:enread 发布时间:2014-07-31 06:58 字体: [ ]  进入论坛
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Long before humans figured out how to create colors, nature had already perfected the process -- think stunning1, bright butterfly wings of many different hues2(色调), for example. Now scientists are tapping into those secrets to develop a more environmentally friendly way to make colored plastics. Their paper on using structure -- or the shapes and architectures of materials -- rather than dyes, to produce color appears in the ACS journal Nano Letters.
 
N. Asger Mortensen, Anders Kristensen and colleagues point out that currently, plastic manufacturers add pigments3 to their products. That gives them the range of colors customers have come to expect in everything from toys to tools. But these additional ingredients add to the growing waste stream of plastics manufacturing and make it difficult to recycle products. To come up with a more eco-friendly alternative, Mortensen's team turned to highly advanced materials that can be made to appear in different colors -- purely4 by designing their surface structures at the nanoscopic level.
 
They layered materials, including ultrathin, nano-sized aluminum5 disks, in a way that manipulates light and creates a new kind of colored surface. To protect it from damage, the scientists topped it off with a scratch-resistant film. Using this method, they created a wide spectrum6 of colors that could be added to plastics.


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1 stunning NhGzDh     
adj.极好的;使人晕倒的
参考例句:
  • His plays are distinguished only by their stunning mediocrity.他的戏剧与众不同之处就是平凡得出奇。
  • The finished effect was absolutely stunning.完工后的效果非常美。
2 hues adb36550095392fec301ed06c82f8920     
色彩( hue的名词复数 ); 色调; 信仰; 观点
参考例句:
  • When the sun rose a hundred prismatic hues were reflected from it. 太阳一出,更把它映得千变万化、异彩缤纷。
  • Where maple trees grow, the leaves are often several brilliant hues of red. 在枫树生长的地方,枫叶常常呈现出数种光彩夺目的红色。
3 pigments 90c719a2ef7a786d9af119297e63a36f     
n.(粉状)颜料( pigment的名词复数 );天然色素
参考例句:
  • The Romans used natural pigments on their fabrics and walls. 古罗马人在织物和墙壁上使用天然颜料。 来自辞典例句
  • The original white lead pigments have oxidized and turned black. 最初的白色铅质颜料氧化后变成了黑色。 来自辞典例句
4 purely 8Sqxf     
adv.纯粹地,完全地
参考例句:
  • I helped him purely and simply out of friendship.我帮他纯粹是出于友情。
  • This disproves the theory that children are purely imitative.这证明认为儿童只会单纯地模仿的理论是站不住脚的。
5 aluminum 9xhzP     
n.(aluminium)铝
参考例句:
  • The aluminum sheets cannot be too much thicker than 0.04 inches.铝板厚度不能超过0.04英寸。
  • During the launch phase,it would ride in a protective aluminum shell.在发射阶段,它盛在一只保护的铝壳里。
6 spectrum Trhy6     
n.谱,光谱,频谱;范围,幅度,系列
参考例句:
  • This is a kind of atomic spectrum.这是一种原子光谱。
  • We have known much of the constitution of the solar spectrum.关于太阳光谱的构成,我们已了解不少。
TAG标签: materials nature Colors
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