{"id":16392,"date":"2022-02-05T10:56:47","date_gmt":"2022-02-05T02:56:47","guid":{"rendered":"https:\/\/www.paiqinano.com\/?p=16392"},"modified":"2023-06-16T17:46:57","modified_gmt":"2023-06-16T09:46:57","slug":"%e5%ae%8c%e5%85%a8%e6%8e%92%e6%96%a5%e6%b6%b2%e4%bd%93%e7%9a%84%e6%b0%9f%e5%8c%96%e6%b6%82%e5%b1%82","status":"publish","type":"post","link":"https:\/\/www.paiqinano.com\/?p=16392","title":{"rendered":"\u5b8c\u5168\u6392\u65a5\u6db2\u4f53\u7684\u6c1f\u5316\u6d82\u5c42"},"content":{"rendered":"

Fluorinated coating is utterly repellent<\/strong><\/h1>\n
by\u00a0<\/em>Mark Peplow, special to C&EN<\/em><\/h5>\n

 <\/p>\n

\u4e00\u79cd\u5168\u900f\u660e\u7684\u3001\u6709\u81ea\u6108\u80fd\u529b\u7684\u8584\u9540\u5c42\u53ef\u4ee5\u62b5\u5fa1\u5305\u542b\u6d53\u9178\u4e0e\u4f4e\u754c\u9762\u5f20\u529b\u6709\u673a\u6eb6\u5242\u4ee5\u5185\u7684\u4e00\u767e\u591a\u79cd\u6db2\u6001\u7684\u8150\u8680<\/em><\/p>\n

\"1.jpg\"<\/p>\n

The new fluorinated coating protects a polystyrene petri dish from a droplet of the solvent tetrahydrofuran (colored blue). The solvent normally dissolves this plastic.<\/em><\/p>\n

Credit:\u00a0Nat. Mater.<\/em><\/em><\/p>\n

\u00a0<\/em><\/p>\n

\u6709\u4e00\u4e9b\u9632\u6f6e\u9540\u5c42\u6ce1\u6d78\u5728\u6c34\u91cc\u65f6\u4ecd\u53ef\u4ee5\u7ef4\u6301\u5e72\u8e81\uff0c\u4e5f\u6709\u4e00\u4e9b\u9540\u5c42\u53ef\u4ee5\u963b\u9694\u6cb9\u53ca\u5176\u6709\u673a\u6eb6\u6db2\u3002\u4e5f\u6709\u4e00\u4e9b\u9540\u5c42\u5219\u53ef\u4ee5\u627f\u53d7\u4e25\u82db\u7684\u81ea\u7136\u73af\u5883\uff0c\u53ef\u89e3\u51b3\u5f3a\u78b1\u53ca\u9ad8\u6eab\uff0c\u4e43\u81f3\u5728\u88ab\u635f\u574f\u540e\u53ef\u4ee5\u81ea\u5df1\u53d8\u597d\u3002<\/p>\n

 <\/p>\n

\u73b0\u5982\u4eca\uff0c\u79d1\u5b66\u7814\u7a76\u5de5\u4f5c\u4eba\u5458\u9020\u5c31\u4e86\u5b89\u5168\u9632\u62a4\u9540\u5c42\u884c\u4e1a\u5f53\u4e4b\u65e0\u6127\u7684\u745e\u58eb\u519b\u5200\u3002\u56e0\u4e3a\u5176\u7279\u6709\u7684\u6709\u673a\u5316\u5b66\u7279\u6027\u548c\u6750\u8d28\uff0c\u8fd9\u7c7b\u9540\u5c42\u5728\u878d\u5408\u4e86\u4ee5\u4e0a\u63d0\u53ca\u7684\u5168\u90e8\u7279\u6027\u4ee5\u5916\uff0c\u8fd8\u5177\u5907\u522b\u7684\u7684\u7279\u6027\uff08Nat.Mater\u30022018\uff0cDOI\uff1a10.1038\/ s41563-018-0178-2\uff09\u3002\u201c\u5927\u5bb6\u64cd\u7eb5\u4e00\u7cfb\u5217\u4e0d\u4e00\u6837\u7684\u6784\u9020\uff0c\u4ece\u79bb\u5b50\u952e\u5230\u5916\u90e8\u7ecf\u6d4e\u6c34\u51c6\u7684\u7eb3\u7c73\u6280\u672f\u6784\u9020\u3002\u201d\u58a8\u5c14\u672c\u5927\u5b66\u7684\u5510\u7eb3\u5fb7\u5361\u9c81\u7d22\uff08Frank Caruso\uff09\u8bb2\u5230\u3002\u4ed6\u662f\u8fd9\u4e00\u8d85\u7ea7\u5168\u80fd\u539f\u6750\u6599\u7814\u53d1\u90e8\u95e8\u7684\u79d1\u5b66\u7814\u7a76\u5de5\u4f5c\u4eba\u5458\u4e4b\u4e00\u3002<\/p>\n

 <\/p>\n

\u4e0a\u8fb9\u63d0\u53ca\u7684\u9540\u5c42\u662f\u4e00\u79cd\u5305\u62ec\u4e861H\uff0c1H\uff0c2H\uff0c2H-\u5168\u6c1f\u5df1\u57fa\u4e09\u6c2f\u7845\u70f7\uff08PFTS\uff09\u548c\u78fa\u9178\u57fa\u4e19\u70ef\u9178\u6b63\u4e01\u916f\uff08n-BCA\uff09\u7684\u6df7\u5408\u7269\u8d28\uff0c\u5728\u4e8c\u6c2f\u4e94\u6c1f\u4e01\u70f7\u9971\u548c\u6eb6\u6db2\u4e2d\u6df7\u548c\u3002\u5f53\u5176\u88ab\u55b7\u6f06\u4e8e\u8868\u5c42\u65f6\uff0c\u7a7a\u6c14\u4e2d\u7684\u6c34\u84b8\u6c7d\u4f1a\u5f15\u8d77PFTS\u548cn-BCA\u4e2d\u95f4\u7684\u4e00\u7cfb\u5217\u7f29\u805a\u53cd\u5e94\uff0c\u4ea7\u751f\u575a\u6bc5\u3001\u5168\u900f\u660e\u7684\u5851\u6599\u8584\u819c\u3002\u8be5\u5851\u6599\u8584\u819c\u9540\u5c42\u5e26\u6709\u9ad8\u805a\u7269\u91d1\u7eb3\u7c73\u9897\u7c92\uff0c\u6c47\u805a\u5408\u62fc\u4ea7\u751f\u5177\u5907\u4f18\u826f\u6750\u8d28\u7684\u6d82\u65b9\u9762\uff0c\u800c\u8fd9\u79cd\u6d82\u65b9\u9762\u53ef\u4ee5\u6355\u83b7\u7ec6\u5fae\u7684\u6c14\u4f53\u4ea7\u751f\u7684\u6c7d\u6ce1\u5939\u5c42\uff0c\u4ee5\u5177\u6709\u963b\u6b62\u6db2\u6001\u7684\u529f\u6548\u3002<\/p>\n

\u5728\u68c0\u6d4b\u4e2d\uff0c\u8be5\u6d82\u819c\u53ef\u4ee5\u9694\u7edd\u5305\u542b\u6c34\u3001\u6b63\u620a\u70f7\u3001\u5168\u6c1f\u5df1\u70f7\u548c\u6d53\u76d0\u9178\u4ee5\u5185\u7684100\u5404\u79cd\u4e0d\u540c\u7684\u6db2\u6001\u3002\u51fa\u6db2\u901a\u5e38\u5728\u9540\u5c42\u4e0a\u4ea7\u751f\u4f3c\u7403\u578b\u7684\u6c34\u96fe\uff0c\u5e76\u4e0e\u56fe\u65b9\u9762\u4ea7\u751f\u6700\u5c11150\u5ea6\u7684\u8868\u9762\u5f20\u529b\u3002\u6709\u7740\u8fd9\u7c7b\u8868\u9762\u5f20\u529b\u6807\u503c\u7684\u9540\u5c42\u901a\u5e38\u4f1a\u88ab\u89c9\u5f97\u5177\u5907\u201c\u8d85\u9632\u6db2\u6027\u201d\u3002\u7a0d\u5fae\u504f\u659c\u8868\u5c42\u2013\u00a0\u901a\u5e38\u4f4e\u4e8e5\u5ea6\u2013\u00a0\u4fbf\u5145\u8db3\u4f7f\u51fa\u6db2\u5e72\u51c0\u5229\u7d22\u5730\u4ece\u9540\u5c42\u8868\u5c42\u6eda\u79bb\u3002\u5f53\u6b63\u620a\u70f7\uff08\u4e00\u79cd\u5177\u5907\u6781\u4f4e\u7684\u754c\u9762\u5f20\u529b\u800c\u4e14\u4f1a\u6253\u6e7f\u5927\u90e8\u5206\u8868\u5c42\u7684\u5316\u5b66\u7269\u8d28\uff09\u88ab\u55b7\u5165\u8be5\u9540\u5c42\u4e0a\u8fb9\u65f6\uff0c\u9540\u5c42\u8868\u5c42\u53ef\u4ee5\u968f\u4fbf\u5730\u5c06\u5176\u5f39\u843d\u3002<\/p>\n

 <\/p>\n

 <\/p>\n

A jet of pentane bounces right off this stainless steel mesh, thanks to its super-repellent coating. This solvent will wet most surfaces.<\/em><\/p>\n

Credit:\u00a0Nat. Mater.<\/em><\/p>\n

\u00a0<\/em><\/em><\/p>\n

\u79d1\u5b66\u7814\u7a76\u5de5\u4f5c\u5458\u8868\u660e\uff0cn-BCA\u53ef\u5f53\u505a\u4e00\u79cd\u5f3a\u529b\u7c98\u5408\u5242\uff0c\u5c06\u4ee5\u4e0a\u5efa\u7b51\u6d82\u6599\u56fa\u5b9a\u4e0d\u52a8\u5728\u5305\u542b\u6728\u6599\u3001\u91d1\u5c5e\u6750\u6599\u3001\u5939\u5c42\u73bb\u7483\u548c\u6da4\u7eb6\u5e03\u7eba\u7ec7\u7269\u4ee5\u5185\u7684\u5404\u7c7b\u539f\u6750\u6599\u4e0a\u3002\u5361\u9c81\u7d22\u89c9\u5f97\uff0c\u8fd9\u7c7b\u5f3a\u7c98\u7ed3\u529b\u8fd8\u80fd\u591f\u51cf\u5c11\u9540\u5c42\u8087\u4e8b\u9003\u9038\u5230\u81ea\u7136\u73af\u5883\u4e2d\u7684\u98ce\u9669\u6027\uff0c\u800c\u8fd9\u4e00\u95ee\u9898\u4e00\u76f4\u56f0\u60d1\u7740\u522b\u7684\u591a\u6c1f\u5316\u5408\u7269\u7684\u8fd0\u7528\u3002<\/p>\n

\"3.jpg\"<\/p>\n

 <\/p>\n

\u8be5\u9540\u5c42\u5728100\u2103\u4e5f\u53ef\u4ee5\u518d\u6b21\u62b5\u89e6\u6db2\u6001\uff0c\u5e76\u5728\u522e\u64e6\u3001\u78be\u78e8\u548c\u6e05\u6d17\u540e\u7ef4\u6301\u5176\u7279\u6027\u3002\u4ec5\u6709\u5f53\u79d1\u5b66\u7814\u7a76\u5de5\u4f5c\u4eba\u5458\u7528\u6c27\u7b49\u79bb\u5b50\u51b2\u6d17\u5b83\u65f6\uff0c\u8be5\u9540\u5c42\u624d\u4f1a\u4e27\u5931\u5176\u9632\u6db2\u6027\u3002\u5373\u4f7f\u5982\u6b64\uff0c\u8be5\u539f\u6750\u6599\u4e5f\u53ef\u4ee5\u5728\u906d\u53d7\u4ee5\u4e0a\u89e3\u51b3\u540e\uff0c\u5728\u5e38\u6e29\u4e0b24\u5c0f\u65f6\u540e\u81ea\u5df1\u53d8\u597d\uff0c\u6216\u662f\u5728120\u00b0C\u65f6\u4e8e10min\u5185\u4fee\u590d\u3002\u6362\u53e5\u8bdd\u8bf4\uff0c\u5f53\u8be5\u9540\u5c42\u4e2d\u7684\u9ad8\u805a\u7269\u94fe\u8d44\u4ea7\u91cd\u7ec4\u65f6\uff0c\u8be5\u9540\u5c42\u4f1a\u7ec8\u83b7\u5176\u6b64\u524d\u5168\u90e8\u7684\u8d85\u81ea\u7136\u80fd\u529b\u3002<\/p>\n

 <\/p>\n

\"4.jpg\"<\/p>\n

The microscopic structure of the new fluorinated coating may help to create a cushion of air that improves its repellent properties.<\/em><\/p>\n

Credit:\u00a0Nat. Mater.<\/em><\/p>\n

\u00a0<\/em><\/p>\n

\u6765\u6e90\u4e8e\u9a6c\u514b\u65af\u00d7\u6d77\u6d0b\u4e4b\u707e\u9ad8\u805a\u7269\u7814\u7a76\u5ba4\u3001\u79d1\u5b66\u7814\u7a76\u975e\u5e38\u9632\u6db2\u9540\u5c42\u7684Doris Vollmer\u8868\u660e\uff0c\u5f88\u591a\u4ee5\u4e0a\u63d0\u53ca\u7684\u975e\u5e38\u9632\u6db2\u7279\u6027\u65e9\u5df2\u88ab\u52a0\u5165\u5230\u4e86\u4e4b\u524d\u521b\u9020\u53d1\u660e\u51fa\u4f86\u7684\u8d44\u6599\u4e2d\u3002\u53ef\u662f\u8fd9\u4e00\u6b21\u7684\u9540\u5c42\u5bf9\u6b63\u620a\u70f7\u7684\u62b5\u89e6\u5de5\u4f5c\u80fd\u529b\u662f\u4e0d\u5bfb\u5e38\u7684\uff0c\u7531\u4e8e\u8be5\u9540\u5c42\u80fd\u5728\u81ea\u5df1\u4fee\u8865\u540e\u5f7b\u5e95\u6062\u590d\u5bf9\u6b63\u620a\u70f7\u6db2\u6001\u7684\u62b5\u6297\u6027\u3002\u201c\u8fd9\u6bd4\u6211\u89c1\u8fc7\u7684\u522b\u7684\u5efa\u7b51\u6d82\u6599\u66f4\u5f3a\u3002\u201d\u5979\u8bb2\u3002<\/strong><\/p>\n

 <\/p>\n

\u675c\u52d2\u59c6\u9ad8\u6821\u5f00\u53d1\u8bbe\u8ba1\u4f5c\u7528\u8868\u5c42\u6750\u8d28\u7684Jas Pal S. Badyal\u8bf4\uff0c\u8fd9\u7c7b\u5efa\u7b51\u6d82\u6599\u7b80\u6613\u7684\u55b7\u6f06\u65b9\u5f0f\uff0c\u4e5f\u53ef\u4ee5\u4f7f\u5176\u5728\u5546\u4e1a\u670d\u52a1\u8fd0\u7528\u4e0a\u66f4\u5177\u6709\u8bf1\u60d1\u529b\u3002\u201c\u8fd9\u7c7b\u4e00\u6b65\u5230\u4f4d\u7684\uff08\u55b7\u6f06\uff09\u65b9\u5f0f\u975e\u5e38\u597d\u3002\u201d\u4ed6\u8bf4\u9053\u3002\u6b8a\u4e0d\u77e5\uff0c\u5e94\u7528\u4e8c\u6c2f\u4e94\u6c1f\u4e01\u70f7\u505a\u4e3a\u5efa\u7b51\u6d82\u6599\u78f7\u9178\u6fc0\u9176\u7684\u6709\u673a\u6eb6\u5242\uff0c\u5f88\u6709\u53ef\u80fd\u53d8\u6210\u5546\u4e1a\u670d\u52a1\u5ba3\u4f20\u4e2d\u7684\u62e6\u8def\u864e\uff0c\u7531\u4e8e\u8fd9\u79cd\u5364\u5316\u5bf9\u81ea\u7136\u73af\u5883\u6709\u4e0d\u826f\u5f71\u54cd\u3002<\/p>\n

 <\/p>\n

 <\/p>\n

A drop of pentane falls onto a piece of fabric with a super-repellent coating.<\/em><\/p>\n

Credit:\u00a0Nat. Mater.<\/em><\/em><\/p>\n

\u00a0<\/em><\/em><\/p>\n

Caruso\u63d0\u8bae\uff0c\u8fd9\u7c7b\u539f\u6750\u6599\u6700\u540e\u53ef\u4ee5\u5f00\u53d1\u8bbe\u8ba1\u6210\u7528\u4ee5\u5c4f\u853d\u6389\u6709\u673a\u5316\u5b66\u5e72\u6270\u7684\u9540\u5c42\uff0c\u800c\u4e14\u8be5\u4eba\u5458\u65e9\u5df2\u9010\u6e10\u4e0e\u5de5\u4e1a\u751f\u4ea7\u5c0f\u4f19\u4f34\u534f\u4f5c\u3002\u201c\u4f46\u8fd9\u4e9b\u539f\u6750\u6599\u5728\u4f7f\u7528\u5c42\u9762\u4ecd\u6709\u8f83\u957f\u7684\u8def\u8981\u8d70\u3002\u201d\u4ed6\u586b\u8865\u8bf4\uff0c\u5e76\u5f3a\u8c03\u79d1\u5b66\u7814\u7a76\u5de5\u4f5c\u4eba\u5458\u5fc5\u987b\u51cf\u5c11\u9540\u5c42\u6210\u672c\u8d39\u5e76\u8bc4\u5b9a\u5176\u957f\u671f\u6027\u8010\u78e8\u6027\u80fd\u3002<\/p>\n

 <\/p>\n

Transparent, self-healing film fends off more than 100 liquids, including concentrated acids and low-surface-tension solvents<\/em><\/p>\n

Some liquid-repelling coatings\u00a0stay dry in a deluge of water, while others rebuff oils and organic solvents. Some can withstand harsh treatment, shrugging off harsh acids, high temperatures, or even\u00a0healing themselves\u00a0after being damaged.<\/p>\n

Now researchers have created a veritable Swiss Army knife of a repellent coating that combines all of these properties and more, thanks to its unique chemistry and texture (Nat. Mater.<\/em>\u00a02018,\u00a0DOI: 10.1038\/s41563-018-0178-2). \u201cWe\u2019re controlling a range of different structures, from the chemical bond to the nanoscale to the microscopic level,\u201d says Frank Caruso of the University of Melbourne, part of the team behind the super-omniphobic material.<\/p>\n

The coating is a mixture of 1H,1H,2H,2H-perfluorohexyltrichlorosilane (PFTS) and\u00a0n-butyl cyanoacrylate (n-BCA), combined in a dichloropentafluoropropane solution. When sprayed onto a surface, water vapor in the atmosphere triggers a series of polymerization reactions between PFTS and\u00a0n-BCA to create a tough, transparent film. The coating contains polymer nanoparticles that aggregate to form a highly textured surface, which may trap tiny pockets of air to help ward off liquids.<\/p>\n

In tests, the coating repelled more than 100 different liquids, including water,\u00a0n-pentane, perfluorohexane, and concentrated hydrofluoric acid. Droplets of liquid typically formed almost spherical globules on the coating, with contact angles of at least 150 degrees\u2014generally regarded as the mark of a super-repellent surface. Slightly tilting a surface\u2014typically less than 5 degrees\u2014was enough to make the droplets roll off cleanly. A jet of\u00a0n-pentane, which has a very low surface tension and will wet most surfaces, simply bounced off coated surfaces.<\/p>\n

The reserchers\u00a0say that\u00a0n-BCA acts as a powerful adhesive to anchor the coating to a wide range of substances, including wood, metal, glass and polyester fabric. Caruso suggests that this strong adhesion may also reduce the risk of the coating escaping into the environment, a problem that has bedeviled other polyfluorinated compounds.<\/p>\n

The coating continued to repel liquids at 100 \u00b0C and retained its properties after scratching, abrading, and washing. Only when the researchers scoured it with oxygen plasma did it lose its repellency. Even then, the material healed itself after 24 hours at room temperature, or in just 10 minutes if heated to 120 \u00b0C, regaining its full complement of super powers as its polymer chains reorganized themselves.<\/p>\n

Many of these properties have been combined in previous materials, says Doris Vollmer at the Max Planck Institute for Polymer Research, who studies super-repellent coatings. But the coating\u2019s ability to repel\u00a0n-pentane is unusual, as is the complete recovery of\u00a0n-pentane repellency after self-healing. \u201cThat is better than I\u2019ve seen with other coatings,\u201d she says.<\/p>\n

The simple, spray-on method could also make this coating attractive for commercial applications, says Jas Pal S. Badyal, who develops functional surfaces at Durham University. \u201cThe one-step approach is good,\u201d he says. However, using dichloropentafluoropropane as a solvent for the coating\u2019s precursors could be a stumbling block, he adds, due to the environmental impact of such halogenated compounds.<\/p>\n

Caruso suggests that the material could eventually be developed into a coating for chemical hazard shielding, and the team is already working with industry partners. \u201cBut there\u2019s still a long way to go in terms of applications,\u201d he adds, noting that they need to reduce the cost of the coating and assess its long-term durability.<\/p>\n

 <\/p>\n

This article is reproduced with permission from Chemical & Engineering News (\u00a9 American Chemical Society).\u00a0The article was first published on\u00a0OCTOBER 16, 2018 | APPEARED IN\u00a0VOLUME 96, ISSUE 42.<\/p>\n

 <\/p>\n

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