Aramid fibers born in the late 1960s , initially as space development and an important strategic material which is not secret show, added a lot of mystery. After the Cold War , as a high-tech Kevlar fiber material used in a large number of civilian areas , gradually revealing the true color of Lushan .
Kevlar stands for " Xinke aramid fabrics , is a new type of special-purpose synthetic materials. Because of long-chain polymer molecules constituting the fibers containing amide groups , and therefore , like nylon , polyamide fibers belong . But the difference is that the nylon polymer macromolecules constituting the amide group is connected to an aliphatic chain , an aromatic polyamide fiber and an amide group is connected to an aromatic ring or an aromatic ring derivatives, such fibers so that collectively the aromatic polyamide fibers , aramid referred .
Since the aromatic group-substituted aliphatic group of flexible and reduced rigidity of the molecular chain are reflected in terms of fiber properties , heat resistance , and initial modulus were increased significantly , so the aromatic polyamide fiber is an organic fiber temperature the main categories. One of the most practical value species are the two molecular chains arranged in jagged aramid fiber , aramid fiber 1313 is our life ; First, the molecular chains are arranged linearly para-aramid fiber , our life is Kevlar 1414. Both similar chemical structure , but the performance difference is great , different application fields : aramid 1313 for its excellent heat insulation, a high-quality functional fiber , Kevlar and metallic make an excellent 1414 in high-performance fiber core occupies an important position .
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