The difference between nylon and polyester: Nylon has strong abrasion resistance, ranking first among all fibers. Its abrasion resistance is 10 times that of cotton fiber, 10 times that of dry viscose fiber, and 140 times that of wet fiber. Therefore, its durability is excellent. Polyester has high strength. The short fiber strength is 2.6～5.7cN/dtex, and the high tenacity fiber is 5.6～8.0cN/dtex. Due to its low hygroscopicity, its wet strength and dry strength are basically the same. The impact strength is 4 times higher than nylon and 20 times higher than viscose fiber. Nylon luster is relatively dull, the surface feels like a layer of wax, and the color is not bright. The hand feels stiff, and the fabric is loosened after squeezing it tightly. There are creases and can slowly return to its original shape. The warp and weft yarns have high fastness. Polyester imitates silk with a strong sense and bright luster, but not soft enough, with a flashing effect, smooth, flat and elastic. After squeezing the silk surface tightly, loosen it without obvious crease. After the warp and weft are soaked in water, they are not easy to tear.