{"id":2256,"date":"2004-07-15T22:06:58","date_gmt":"2004-07-16T02:06:58","guid":{"rendered":"https:\/\/engineering.jhu.edu\/magazine-archive\/?p=2256"},"modified":"2014-12-15T22:08:14","modified_gmt":"2014-12-16T03:08:14","slug":"plastics-outstrip-paint","status":"publish","type":"post","link":"https:\/\/engineering.jhu.edu\/magazine-archive\/2004\/07\/plastics-outstrip-paint\/","title":{"rendered":"Plastics That Outstrip Paint"},"content":{"rendered":"

For ships, tanks, and planes, multifunctional appliqu\u00e9s offer a more sophisticated way to avoid corrosion\u2014and maybe detection.<\/strong><\/p>\n

\"High-tech<\/a>
High-tech films being developed in the Center for Multi-Functional Appliqu\u00e9 could have a potential use in protecting aircraft from lightning strikes.<\/strong><\/figcaption><\/figure>\n

Some people see things as they are and ask, \u201cWhy?\u201d John Brupbacher sees things as they could be and asks, \u201cWhy paint?\u201d<\/p>\n

That\u2019s the question explored at the Whiting School\u2019s Center for Multi-Functional Appliqu\u00e9 (CMFA). Appliqu\u00e9s are adhesive-backed plastics that resemble hi-tech wallpaper. Brupbacher is CMFA\u2019s director and principal research engineer in the Department of Chemical and Biomolecular Engineering. He and his colleagues are examining how these appliqu\u00e9s may one day roll past paint as the coating of choice for military and other equipment in need of industrial-strength corrosion protection.<\/p>\n

Metal exposed to such harsh elements as salt water, sand, sun, rain, and extremes in humidity and temperature demands constant maintenance, and that\u2019s expensive. \u201cThe Department of Defense (DoD) has recognized that beating corrosion in the military is costing $10 to 20 billion a year,\u201d says Brupbacher. There are environmental hazards related to stripping, sandblasting, and repainting tanks, HUMVEEs, airplanes, and ships. Then stir in the other factors impacting vehicles and equipment: the need for rapid camouflage changes to accommodate redeployment to different locales, the constant struggle to minimize electronic detection, and the desire to reduce surface friction of a ship\u2019s hull or a plane\u2019s wing. No wonder military planners are actively seeking tougher materials to preserve their materiel. \u201cThey have been looking for a better solution,\u201d says Brupbacher. \u201cOne thing that is getting attention is appliqu\u00e9.\u201d Brupbacher and colleagues presented their work on appliqu\u00e9s last November at the military\u2019s 2003 Tri-Service Corrosion Conference, which has been held biannually since 1967.<\/p>\n

The advantages of a multifunctional appliqu\u00e9 are many, according to Brupbacher, as are the disadvantages of continuing to paint. \u201cWith paint, you have understood issues,\u201d he says. While there are now solvent-free, lead-free, one-coat, and water-based paints, it\u2019s still a medium with many limitations. Adding to the pressure to find alternatives are new user tactical requirements and more demanding finish specifications. \u201cSo, on the one hand, you have all of these standards in place to deal with all of this, but DoD keeps running into the $10 to 20 billion annual expense in paint and corrosion. There is a vision that appliqu\u00e9 may be superior.\u201d<\/p>\n

What, exactly, would they be applying?<\/p>\n

These plastic appliqu\u00e9s are made of fluoropolymers. Extremely tough, they display all of the nonstick, high-durability characteristics of their famous commercial version, Teflon\u2122, a fluoropolymer compound. Plastic appliqu\u00e9s exhibit unique form-fitting characteristics, enabling them to be stretched to the contours of irregular surfaces more readily than, say, a sheet of normal adhesive plastic. The plastic coating \u201cmay not totally replace paint,\u201d explains Brupbacher, but it is \u201cso much more sophisticated that you get a much better film to begin with. Unlike a thin film that you paint on, you are always at a material science advantage when you can make something offline and then apply it.\u201d<\/p>\n

Think of paint as a skin coating that is designed to seal out corrosion and wear, as well as identify (or conceal) an object. Now think of a coating that can be applied at will and stripped off by hand, has coloring and patterning impregnated in it, and is tougher than paint\u2014that\u2019s Brupbacher\u2019s vision. \u201cOne week I have to have my tank in Iraq. Next week, the jungle,\u201d he says. \u201cIf I had an adhesive plastic that I could use to change the colors and camouflage, it would be much less difficult to apply and remove in the field. Something that can be handled that way points toward the superiority of appliqu\u00e9.\u201d<\/p>\n

There are other advantages as well. \u201cWe are taking real plastics on the roll and putting nanoparticles in them,\u201d Brupbacher explains. \u201cThe nanomaterials are not just smaller; they are different.<\/p>\n

There are many kinds of threats out there, and there are many ways that nanomaterials might help meet them.\u201d For security reasons, he doesn\u2019t go into detail, but he will say that in today\u2019s world of sophisticated surveillance, \u201cdetection\u201d is no longer limited just to \u201cthe normal six senses. There are many things you can do to help yourself \u2018hide\u2019 in that world.\u201d Appliqu\u00e9s embedded with certain nanomaterials can play a role in that effort.<\/p>\n

Other potential applications for these high-tech films would be to protect aircraft from lightning strikes and to reduce drag. With paint, you can manufacture in anti-corrosion agents and tints. With polymer, there\u2019s the potential of adding in materials to absorb radar; resist microbes; and function in harsh chemical environments, extreme temperatures, and supersonic speeds. Fluoropolymers can be useful in patching a bridge surface, protecting a metal roof, and even mimicking a metallic color.<\/p>\n

Brupbacher came to Hopkins with broad and deep industry experience. He is using his knowledge and contacts to build a team of experts inside and outside of academia to further CMFA\u2019s work.<\/p>\n

The Center was established in spring 2003 through a three-year, $3.8 million research initiative funded by the Defense Advanced Research Projects Agency (DARPA). CMFA also is garnering support from branches of the military, the Johns Hopkins Applied Physics Laboratory, and others to explore the possibilities of appliqu\u00e9s.<\/p>\n

To develop appliqu\u00e9 technologies, Brupbacher has teamed up with a small company, Integument Technologies, Inc., in Tonawanda, New York. Integument specializes in products to withstand extremes in temperature and chemical service environments. \u201cUniversities are not always equitable with small companies,\u201d he says. \u201cWith Integument, we started with a different premise. We said, \u2018We will work with you to help you, you can keep your intellectual property, and we can use our developments for other things.\u2019 \u201d<\/p>\n

It\u2019s a win-win situation. \u201cIntegument gets what it needs for commercial markets,\u201d explains Brupbacher, and the Center gets access to expertise and an outlet for its research. \u201cThis is a case where the tech transfer guys did it differently,\u201d he says, \u201cand it is bearing results.\u201d<\/p>\n","protected":false},"excerpt":{"rendered":"

For ships, tanks, and planes, multifunctional appliqu\u00e9s offer a more sophisticated way to avoid corrosion\u2014and maybe detection. Some people see things as they are and ask, \u201cWhy?\u201d John Brupbacher sees things as they could be and asks, \u201cWhy paint?\u201d That\u2019s the question explored at the Whiting School\u2019s Center for Multi-Functional Appliqu\u00e9 (CMFA). Appliqu\u00e9s are adhesive-backed…<\/p>\n","protected":false},"author":4,"featured_media":2262,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[28],"tags":[],"class_list":["post-2256","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-features","issue-summer-2004"],"acf":[],"yoast_head":"\nPlastics That Outstrip Paint - JHU Engineering Magazine<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/engineering.jhu.edu\/magazine-archive\/2004\/07\/plastics-outstrip-paint\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Plastics That Outstrip Paint - JHU Engineering Magazine\" \/>\n<meta property=\"og:description\" content=\"For ships, tanks, and planes, multifunctional appliqu\u00e9s offer a more sophisticated way to avoid corrosion\u2014and maybe detection. Some people see things as they are and ask, \u201cWhy?\u201d John Brupbacher sees things as they could be and asks, \u201cWhy paint?\u201d That\u2019s the question explored at the Whiting School\u2019s Center for Multi-Functional Appliqu\u00e9 (CMFA). 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