Use of nylon
Polyamide is mainly used in synthetic fibers. Its most outstanding advantage is that it has higher wear resistance than all other fibers. It is 10 times more wear resistant than cotton and 20 times higher than wool. Some polyamide fibers are added to the blended fabric. It greatly improves its wear resistance; when stretched to 3-6%, the elastic recovery rate can reach 100%; it can withstand tens of thousands of times without breaking.
The strength of the polyamide fiber is 1-2 times higher than that of cotton and 4-5 times higher than that of wool, which is three times that of viscose. However, the heat resistance and light resistance of the polyamide fiber are inferior and the retainability is not good, and the finished clothes are not as crisp as polyester. In addition, the nylon-66 and nylon-6 used for clothing have the disadvantages of poor hygroscopicity and poor dyeability. For this purpose, a new type of polyamide fiber, nylon-3 and nylon-4, has been developed. It is considered to be very promising due to its light weight, excellent wrinkle resistance, good air permeability and good durability, dyeability and heat setting.
This kind of product is widely used, it is a good material for plastic, steel, iron, copper and other metals. It is an important engineering plastic; cast nylon widely replaces the wear parts of mechanical equipment, instead of copper and alloy as wear-resistant parts of equipment. . Suitable for making wear parts, transmission structural parts, household appliance parts, automobile manufacturing parts, screw rods to prevent mechanical parts, chemical machinery parts, chemical equipment. Such as turbines, gears, bearings, impellers, cranks, instrument panels, drive shafts, valves, blades, screw rods, high pressure washers, screws, nuts, seals, shuttles, sleeves, bushing connectors, etc.
Replace metal such as copper
Because polyamide has non-toxicity, light weight, excellent mechanical strength, wear resistance and good corrosion resistance, it is widely used in the replacement of copper and other metals in the machinery, chemical, instrumentation, automotive and other industries to manufacture bearings, gears, Pump blades and other parts. The polyamide has a high strength after melt spinning into a yarn, and is mainly used as a synthetic fiber and can be used as a medical suture.
Used in a variety of medical and knitwear
In civilian use, it can be blended or purely spun into various medical and knitwear. Nylon filament yarn is mostly used in knitting and silk industry, such as woven single stockings, elastic stockings and other wear-resistant nylon socks, nylon shawls, mosquito nets, nylon lace, elastic nylon outerwear, various nylon silk or interwoven silk products. Most of the nylon staple fibers are blended with wool or other chemical fiber wool products to make a variety of wear-resistant fabrics.
In the industry, nylon is used in large quantities to manufacture cords, industrial fabrics, cables, conveyor belts, tents, fishing nets, and the like. It is mainly used as a parachute and other military fabrics in national defense.