Chemistry geniuses needed - Light weight things made strong


Tuna , Wednesday, 11th of August 2010 07:57:40 AM

l have to do a PowerPoint Presentation on how light-weight things are made 
Tuna
to be so strong.

Basically l am supposed to talk about plastic 
Registered User
and fiber glass.

My teacher told me that airplanes are supposed 
Joined: Tuesday, 1st of June 2010, 04:50:41
to be light weight, and many of their wings are actually made from plastic. 
Posts: 2044
Though plastic is light weight engineers have been able to make it strong 
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enough so that it can be used on planes.

Also l need info on 
how fiber glass, despite its light weight is so strong.

Can 
somebody give me some information that they know or useful links of sites 
that provide such information? l just need to be able to explain it, in a 
simple manner. Please remember that l am not even in college. How are they 
able to make such things?

Thanks
 
 
 
 
 

Bitsy , Thursday, 12th of August 2010 02:33:36 PM

Fiberglass & similiar reenforced plastics are strong because  
Bitsy
they are made of a flexible, tough material like epoxy or acrylic resin,  
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together with a strong stringy material like glass fibers. When glass  
Joined: Thursday, 13th of May 2010, 18:33:02
is formed into long thin threads it is very strong in tension - & flexible  
Posts: 2024
( You can pull on it very hard & it will not break). The resin is strong  
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in compression., but not very flexible (You can push it very hard & it  
will resist large forces). Combine the too & you have a tough material  
that has the best attributes of both.  
 
 
 
 
 



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