Tuesday, December 05, 2006


Professor Norman Wagner at the University of Delaware has found a way to enhance the protective properties of kevlar by coating it with a shear thickening fluid. The fluid is actually a supension of nanometer length ceramic particles in ethylene glycol that coats the fabric and can move smoothly at low speed but forms log jam structures at high speed and behaves like a stiff solid. The technology has already been licensed by Armor Holdings, a leading manufacturer of military and law enforcement products. Youtube and other sites have a video that shows off the composite material. I have read a peer reviewed paper about it and think that this could be easy enough to do that highschool science projects could be based on this technology or chemistry set type kits could be made to make little squares of inpenetrable kevlar at home as a novelty.

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