Is Kevlar Really Flexible Despite Being a Crystalline Polymer?

  • Thread starter Thread starter wais
  • Start date Start date
  • Tags Tags
    Flexibility
Join the discussion
Registration is free. Start your own thread to ask a follow-up.
Sign up Log in
2 replies · 11K views
wais
Messages
1,225
Reaction score
0
Hey,

I know this is my 3rd topic on kevlar but they arent the same question so :P

Anyway, DuPont (the company who own the Kevlar brand) claim that it is flexible, yet it is a cristaline ploymer which makes it stiff, so how can it be flexible as well?

Thanks.
 
Physics news on Phys.org

Discussion

Being that no one has responded yet, I figured I'd post a site that may help...not sure...it all depends upon how much you already know about it, I suppose.

Does http://www.apparelsearch.com/Definitions/Fiber/kevlar_fiber_definition.htm" help any?

What about this: http://en.wikipedia.org/wiki/Kevlar"
 
Last edited by a moderator:
wais said:
Hey,
I know this is my 3rd topic on kevlar but they arent the same question so :P
Anyway, DuPont (the company who own the Kevlar brand) claim that it is flexible, yet it is a cristaline ploymer which makes it stiff, so how can it be flexible as well?
Thanks.

Depends on how 'flexible' and 'stiff' are defined. Stiff as in, high modulus? Flexible as in large yield strain? I'd also like to note that often, marketing distorts science/engineering for a broader public appeal as well (whether its sensible or not).
 
Last edited: