Polyester has a strong silk-like feeling and bright luster, but it is not soft enough, has a glittering effect, has a smooth hand feel, flat and good elasticity. 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.
Nylon has a dull luster, and 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. High fastness of warp and weft.
The properties of nylon: strength, good 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. Nylon fabric has excellent elasticity and elastic recovery, but it is easy to deform under a small external force, so its fabric is easy to wrinkle during wearing. Poor ventilation and easy to generate static electricity.
The hygroscopicity of nylon fabric is a better variety among synthetic fiber fabrics, so clothes made of nylon are more comfortable to wear than polyester garments. Has good moth resistance and corrosion resistance. The heat and light resistance is not good enough, the ironing temperature should be controlled below 140 ℃. Pay attention to the washing and maintenance conditions during wearing and use, so as not to damage the fabric. Nylon fabric is a light fabric, which is only listed after polypropylene and acrylic fabrics in synthetic fiber fabrics. Therefore, it is suitable for making mountaineering clothes and winter clothing.
Polyester performance: 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 resistance is 4 times higher than nylon and 20 times higher than viscose fiber. Good flexibility. The elasticity is close to that of wool, and it can almost completely recover when it stretches 5% to 6%. The wrinkle resistance is better than other fibers, that is, the fabric does not wrinkle and has good dimensional stability. The modulus of elasticity is 22～141cN/dtex, which is 2～3 times higher than nylon. Good water absorption. Good grindability. The abrasion resistance is second only to the best abrasion resistance of nylon, better than other natural fibers and synthetic fibers, and the light resistance is second only to acrylic. preservative. It is resistant to bleaching agents, oxidants, hydrocarbons, ketones, petroleum products and inorganic acids. It is resistant to dilute alkali, not afraid of mildew, but hot alkali can make it decompose. The dyeability is poor.
Polyester fabric has poor hygroscopicity and has a sense of sultry heat when worn. At the same time, it is easy to be charged with static electricity and stain dust, which affects appearance and comfort. However, it is very easy to dry after washing, and the wet strength hardly drops, does not deform, and has good wash and wear properties. Polyester is the best heat-resistant fabric among synthetic fabrics, with a melting point of 260°C and an ironing temperature of 180°C. With thermoplasticity, it can be made into pleated skirts with long-lasting pleats. At the same time, polyester fabrics have poor melting resistance and are prone to forming holes when encountering soot and sparks. Therefore, try to avoid contact with cigarette butts and sparks when wearing. The light fastness of polyester fabric is better, except that it is worse than acrylic, its light fastness is better than natural fiber fabric. Especially the light fastness behind the glass is very good, almost as good as acrylic. Polyester fabric has good resistance to various chemicals. Acids and alkalis do not damage it too much, and they are not afraid of molds and insects. Polyester fabric has good wrinkle resistance and shape retention, so it is suitable for outerwear.