XPost: sci.space.policy, sci.physics   
   From: tkoenig@netcologne.de   
      
   JF Mezei  schrieb:   
   > On 2018-06-20 16:42, Sergio wrote:   
   >   
   >>> Carbon nanotubes.   
   >>   
   >> they are held in a matrix of epoxy glue.   your 10,000 km of glue wont   
   >> support itself.   
      
   > Carbon nanotubes do not replace the primary carbon fibre structure. They   
   > are mixed with the epoxy to add strength to the matrix.   
      
   Or another material...   
      
   With the problem of disentangeling the tubes, of binding the   
   tubes to the matrix material (pulling out the fiber from the   
   matrix is a common failure mode), and of course the fibers may   
   have imperferfections which can _drastically_ (by quite a few   
   orders of magnitude) reduce their strenghts.   
      
   Is anybody aware of actual application of CNTs for materials,   
   an application which has made it into the marketplace and that   
   I could order today?  I'm not, but I have not followed that   
   field for some time.   
      
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