Recycled nylon (PA6, PA66) filament is a kind of synthetic fiber made by recycling and reprocessing waste nylon materials. The following is a brief introduction:
1. source of raw materials
It mainly uses waste nylon clothing, nylon industrial silk waste, carpets, etc. as raw materials. After collection, classification, cleaning and other pretreatment, these waste nylon materials are treated by depolymerization or melting, so that they can be spun again, realizing the recycling of resources and reducing the pressure on the environment.
2. production process
Depolymerization method: under the action of certain temperature, pressure and catalyst, the molecular chain of waste nylon is broken down and decomposed into monomer or oligomer, and then the nylon polymer is re synthesized through refining, polymerization and other steps, and then the regenerated nylon filament is made through spinning process.
Melt spinning method: the pretreated waste nylon material is directly heated to the molten state, and then extruded into silk through spinning components, and then regenerated nylon filament is obtained through cooling, stretching and other processes. This method is relatively simple, but requires high purity and uniformity of raw materials.
3. performance characteristics
Physical properties: similar to the original nylon filament, the regenerated nylon filament (PA6, PA66) has high strength and wear resistance, and its breaking strength is generally about 4-6cn/dtex, which can withstand large tensile force and is not easy to be damaged. It is suitable for manufacturing various textiles that need durability, such as clothing, bags, tents, etc. At the same time, it also has good elasticity and resiliency, and can maintain the shape of clothes and wear comfortably.
Chemical properties: it has good chemical corrosion resistance and certain resistance to common acids, alkalis and other chemical substances. It is not easy to be damaged by chemical substances in the process of daily use and washing. In addition, the regenerated nylon filament has good light resistance and is not easy to fade after long-term exposure to the sun.
Environmental protection performance: the biggest advantage lies in its environmental protection. By recycling waste nylon materials to produce filament, the dependence on non renewable resources such as oil is reduced, and the energy consumption and carbon dioxide emissions in the nylon production process are reduced. According to statistics, the production of regenerated nylon filament can save about 60% -70% of energy and reduce a large number of greenhouse gas emissions compared with the production of original nylon filament.
4. application fields
Clothing field: it is widely used in the production of all kinds of clothing, such as sportswear, outdoor clothing, underwear, etc. Its good wear resistance and elasticity make the clothing more comfortable and durable in the wearing process; At the same time, the regenerated nylon filament can present rich colors through various dyeing processes to meet the fashion needs of different consumers.
Home textile field: it also has certain applications in home textile products, such as bedding, curtains, sofa covers, etc. It can provide soft handle and good texture for home textile products, and its durability can also ensure the long-term use of home textile products.
Industrial application: it has important applications in industrial textiles, such as manufacturing automobile safety belts, airbags, industrial filter cloth, fishing nets, etc. Its high strength and wear resistance can meet the strict performance requirements of these industrial textiles. At the same time, the environmental protection characteristics of regenerated nylon filament also meet the pursuit of sustainable development of modern industry.
