Sunday, April 22, 2012

What could be stronger than steel, might you ask?

Maybe you all remember the video we watched in chemistry not too long ago about Kevlar. If so, here's a refresher... Kevlar is a plastic that can stop bullets. It's used in some things such as bullet-proof vests, helmets, and planes. The material is resistant to fire. What makes it so strong is that the fibers in it are in organized, parallel lines- not just a mess. When it's spun into fibers and then heated, it becomes even stronger and is used for military armor, space suits, and safety gloves. It's also 5x stronger than steel and more elastic than carbon fiber. Kevlar is hard to compress and to paint so instead of being used on a car, it's used in the driver's cell when it comes to racing cars. It isn't affected by long exposure to weathering or to the sea.
    
                                                    Muscular Man Wearing a Kevlar Vest



4 comments:

  1. I did my project on Kevlar before! It is a really strong plastic, it stops planes!

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    1. Yes, I believe I remember that. In the chemistry video, it was used in the cables to stop the planes.

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  2. So if Kevlar is organized, does that mean that steel is a "mess" and not organized?

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    1. From my understanding, steel is just less organized than Kevlar; it's not particularly a mess on it's own, only somewhat compared to Kevlar.

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