Differences between tensile testing standards for aromatic polyamide fibers
Aromatic polyamide fibers are fibers composed of linear macromolecules formed by aromatic groups linked by amide or imide bonds. At least 85% of the amide or imide bonds are directly connected to two aromatic rings, and when imide bonds are present, their percentage does not exceed that of amide bonds. This article mainly introduces and compares the currently implemented testing standards for meta-aramid and para-aramid fibers, analyzing the differences.