Polypropylene POY yarn: Performance and production process!
Polypropylene POY yarn: Performance and production process!
Polypropylene POY yarn is polypropylene Pre-Oriented yarn (Polypropylene pre-oriented Yarn), which is a chemical fiber product produced by polypropylene as raw material through a specific spinning process. The following is a detailed introduction of it:
Production process:
Raw material preparation: The selection of high-quality polypropylene particles as raw materials, these particles need to undergo strict screening and drying treatment to remove moisture and impurities, to ensure the purity and stability of raw materials.
Melt extrusion: the dried polypropylene particles are added to the screw of the spinning machine, at high temperature and a certain pressure, the polypropylene particles gradually melt into a uniform melt.
Spinning: The melt is extruded through the spinneret of the spinning machine to form a fine flow. In the process of extrusion, the fineness and cross-section shape of the polypropylene POY wire can be controlled by adjusting the aperture and shape of the spinneret.
Cooling curing: The thin stream extruded from the spinneret is rapidly cooled and cured in the air to form the primary fiber. The speed and way of cooling have an important impact on the structure and performance of the fiber, and it is usually cooled by side-blowing or water cooling.
Winding: The cured fiber is wound into a cylinder through the winding device to form the finished polypropylene POY filament. The winding speed and tension need to be precisely controlled to ensure the molding quality and subsequent processing performance of the cylinder.
Performance characteristics:
Physical properties:
High strength: Polypropylene POY yarn has high strength, and its tensile strength and breaking strength are excellent, making it able to withstand greater tension and pressure in the subsequent processing and use.
Low specific gravity: The density of polypropylene is small, which makes the specific gravity of polypropylene POY silk lighter, and it is a lightweight fiber material. This feature makes polypropylene POY yarn an advantage in some applications that require weight, such as aerospace, automotive manufacturing, and so on.
Good wear resistance:Polypropylene POY yarn has good wear resistance, and can maintain good performance and appearance in the case of friction and wear.
Chemical properties:
Chemical resistance: Polypropylene POY yarn has good tolerance to acids, alkalis, salts and other chemicals, and can still maintain stable performance in harsh chemical environments. This makes it widely used in chemical industry, environmental protection and other fields.
Oxidation resistance: It has good antioxidant properties, is not easy to be oxidized and aging, and has a long service life.
Other properties:
Good thermal stability: under high temperature environment, Polypropylene POY yarn can maintain good performance and shape stability, and is not easy to deformation and melting.
Low water absorption: Polypropylene POY yarn has very low water absorption and almost no water absorption, which makes it maintain good performance in wet environments and is easy to dry.
Ningbo Dazhong Chemical Fiber Industry Co., Ltd. long-term production and management: PP yarn, polypropylene filament, PP FDY yarn, polyester staple fiber, polypropylene full draft wire, polypropylene POY yarn, polyester POY yarn.