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News Link • Science, Medicine and Technology

Carbon nanotube composite material could replace carbon fiber

• http://www.gizmag.com/cnt-composite-carbon-fiber-a
 When people need a material that’s strong yet lightweight, they usually look to carbon fiber. In the near future, however, they may instead choose to go with composite materials made from stretched carbon nanotubes. These materials could theoretically offer the same strength as carbon fiber at one-tenth the weight, or the same weight at ten times the strength. Researchers from North Carolina State University have recently succeeded in creating such a composite.

According to the university, scientists have spent decades trying to achieve the four goals that must be met in order to create CNT (carbon nanotube) composites – the nanotubes must be long in order to effectively carry loads; they must be aligned in rows; there must be a high ratio of CNTs to the polymer or resin used to hold them together; and, in order for the material to bear weight evenly, the nanotubes must be as straight as possible.

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