You’ve heard of airplanes made from carbon-fiber reinforced (CFRP) plastics. What’s next? Well there’s a sheet of carbon nanotubes—called “buckypaper”—that may create structures for another generation of airplanes. Carbon nanotubes are already being used as a filler in plastics, but only in loadings of 2 or 3 percent. Buckypaper would use significantly higher loadings. The idea of nanotube reinforced composites is not new. Nanotubes are notorious because they clump and tangle, and no one has been able to produce nanotube composites outside of a lab. Researchers hope that may be changing. Rice University in Houston, for example, has been awarded three patents that advance the technology. Lockheed Martin has been awarded another.
Professor Ben Wang and other scientists at Florida State University say they may have the answer. Exposing the tubes to high magnetism lines up the nanotubes in the same direction. Another breakthrough: creating some roughness on the surface so the nanutubes can bond to a matrix material, such as epoxy. The nanotubes in effect take the place of carbon fiber in a composite construction.
You can make extremely thin sheets with the nanotubes—thus use of the word paper. “Bucky” comes from Buckminster Fuller who envisioned shapes now called fullerenes. Stack up hundreds of sheets of the “paper” and you have a composite material that is 10 times lighter but 500 times stronger than a similar sized piece of carbon steel sheet. It’s easy to see why Lockheed Martin is interested. Unlike CFRP, carbon nanotubes conduct electricity like copper or silicon and disperse heat like steel or brass.
FSU plans to spin out a company to make carbon nanotube composites, and says it may even have some commercial products in a year. Considering that buckminsterfullerenes, or “buckyballs” were first discovered by Rice researchers in 1985, the FSU timeline may be a little optimistic. That doesn’t diminish its significance, however.
A make-your-own Star Wars Sith Lightsaber hilt is heftier and better-looking than most others out there, according to its maker, Sean Charlesworth. You can 3D print it from free source files, and there's even a hardware kit available -- not free -- so you can build one just in time for Halloween.
Some next-generation bio-based materials are superior in performance to their petro-based counterparts, but also face some commercial challenges. This is especially true of certain biopolymers, adhesives, coatings, and advanced materials.
Cars and other vehicles, as well as electronics and medical devices, continue to lead the use cases for the new plastics products we've been seeing, as engineers design products for tougher environments.
LeMond Composites, founded by three-time Tour de France cycling champion Greg LeMond, is the first to license a new carbon fiber production method invented by Oak Ridge National Laboratory (ORNL) that's faster, cheaper, and greener.
This month will mark the launch of the SpeedFoiler, a super-fast, ultra-lightweight foiling catamaran that can fly short distances over water faster than other foiling designs, in part because of its carbon composite materials.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies.
You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived.
So if you can't attend live, attend at your convenience.