#1
Right I am at college now and I am doing my physics coursework.

I am having trouble because I am doing about bulletproofing materials in the current section. I have an image of Kevlar on a molecular level:

http://en.wikipedia.org/wiki/Kevlar#cite_note-whatiskevlar-0

But I don't know why the bonds are 'good'. What is so special about it that means it's efficient and so on?


Cheers!


=]
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#2
well it has tons of hydrogen bonds and they're the strongest intermolecular bond. Kevlar also has it in all those benzene rings which a very strong and rigid group of atoms but oalso fairly light weight.
#5
Quote by Mask_of_Terror
well it has tons of hydrogen bonds and they're the strongest intermolecular bond. Kevlar also has it in all those benzene rings which a very strong and rigid group of atoms but oalso fairly light weight.

exactly.

just dont try and contact the company for any more information than whats on wikipedia. I did for a uni project, and they threatened legal action. said i was trying to steal their product and stuff like that. all i wanted to know was what type of reactor was used in the manufacturing process.
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#6
Quote by AndyPandy
exactly.

just dont try and contact the company for any more information than whats on wikipedia. I did for a uni project, and they threatened legal action. said i was trying to steal their product and stuff like that. all i wanted to know was what type of reactor was used in the manufacturing process.



HAHA unlucky,


cheers mate. Everyone else too you've been a great help


D'you know anything else I could use then? I am supposed to go beyond A level in one topic of the write-up, so I will abuse you whilst you're here =]


Cheers!
Quote by Last_Serenade
dimebag put as much emotion in to 9/10 of his solos as hitler showed when putting jews in syanide showers.

Quote by P-Laverty
QUESTION! Does emo porn have blood everywhere from wrist wounds?

Quote by Dabey
HAHA U IS TEH EMOZORZ

no but seriously, HAHA U IS TEH EMOZORZ
#7
hmm, i'm not entierly sure what you're doing, seeing as i did advanced highers, but i'll give it a shot anyway.

try looking into some different polymers with similar structures. you could look at how the difference in structures and functional groups relates to the difference in properties of the material. thats a more chemistry based look at it, since thats what i'm studying at the moment.

Or for a totally unrelated physics topic, try looking into resonance. thats what i did my advanced higher physics project on. it wasnt the most exciting topic, but it wasnt very difficult, and its something that isnt normally covered in any great detail in the usual physics courses.

any help? or is it just a load of bollocks?
Quote by Dave_Mc
how do those marshall handles compare tonewise to, say, mesa handles?

Owns a Blackheart Little Giant...
#8
Umm, I kinda get you but where does resonance fit in to ballistics?
Quote by Last_Serenade
dimebag put as much emotion in to 9/10 of his solos as hitler showed when putting jews in syanide showers.

Quote by P-Laverty
QUESTION! Does emo porn have blood everywhere from wrist wounds?

Quote by Dabey
HAHA U IS TEH EMOZORZ

no but seriously, HAHA U IS TEH EMOZORZ
#9
Quote by Jdwannabe
Umm, I kinda get you but where does resonance fit in to ballistics?


it doesnt, i wasnt sure if you wanted a topic relating to balistics or just something else to look at.

'fraid i cant help any more, since i'm no expert on that subject.
Quote by Dave_Mc
how do those marshall handles compare tonewise to, say, mesa handles?

Owns a Blackheart Little Giant...
#10
Kevlar is extremely highly hydrogen bonded. Also, all the bonds in the structure are rigid. Therefore, it's a highly crystalline polymer. In fact, short chains of kevlar are considered to be liquid crystals when in solution. Due to it's high crystallinity, when you draw it into a fiber, it's an extremely tough fiber. Tough fibers + strong weave = bulletproof.
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