2007-03-12 03:12:38 · 3 answers · asked by robertsutherland1@btinternet.com 2 in Science & Mathematics ➔ Engineering
Kevlar is a rigid rod polymer formed from p-phenylene diamine and terephthaloyl chloride.
It is a fiber, not a solid, and the reaction is performed in sulfuric acid solution. Once the solution is set - the fibers can NEVER be dissolved again. It form a thermotropic liquid crystal solution is H2SO4, which allows the chains of the kevlar to line up and provide for it's unique structural strength.
If you precipitate kevlar out from the reaction without extruding it into a fiber first you get what called "brick dust" - useless intractable powder, that won't dissolve or melt.
2007-03-12 03:55:14 · answer #1 · answered by Dr Dave P 7 · 3⤊ 0⤋
Very good , perfect answer. That's why its application are aircraft protection, boat protection and building protection and individual protection.
2015-12-27 16:59:13 · answer #2 · answered by ommy 1 · 0⤊ 0⤋
Just thought i'd say that the answer above is very good.
2007-03-12 04:41:15 · answer #3 · answered by CJ 3 · 0⤊ 0⤋