Introduction of PP Granules


Release time:

2021-04-09

Polypropylene PP particles are polymers made from propylene as a monomer with a melting temperature of about 174 ° and a density of 0.91g/cm3. It is a semi-crystalline thermoplastic with high impact resistance, strong mechanical properties, and resistance to various organic solvents and acid and alkali corrosion. It is widely used in industry and is one of the common polymer materials.

PP Polypropylene GranulesIt is a polymer made of propylene as a monomer, with a melting temperature of about 174 ° and a density of 0.91g/cm3. It is a semi-crystalline thermoplastic with high impact resistance, strong mechanical properties, and resistance to various organic solvents and acid and alkali corrosion. It is widely used in industry and is one of the common polymer materials.
As a thermoplastic polymer, polypropylene (PP) particles are widely used in the field of plastics. Due to different catalysts and polymerization processes, the properties and uses of the resulting polymers are also different. Polypropylene PP particles have many useful properties, but it still lacks inherent toughness, especially when it is below its glass transition temperature, but the impact resistance can be improved by adding impact modifiers.


PP塑料颗粒


PP granule manufacturersTell you, polypropylene PP particles have excellent processing properties because it has excellent flow properties, wide flow rate and other unique polymer characteristics. The lower flow rate can meet the processing requirements of extruded belts, ribbon wires and monofilaments. It can also make the finished product have tensile strength and low ductility, while maintaining sufficient transverse integrity, thereby minimizing the guide of the coiler. Splitting and dust flying on the device. In order to counteract their particular low transverse strength and tendency to break, film-fiber products with a higher degree of orientation, such as scrims, threads and ropes, typically require flow rates in the range of 7 to 20. The decorative strip product containing the blowing agent is extruded from polypropylene at a flow rate close to 10, so the melt strength and orientation ability can be properly balanced. This polymer, when properly oriented, produces a smooth satin-like surface, and the product has sufficient transverse strength to delay fracture. Extrusion of nonwoven and multifilament products requires a low viscosity and free flowing material, so polypropylene with a high flow rate is used for these purposes.
Polypropylene PP particles have many useful properties, but they lack inherent toughness, especially below their glass transition temperature. However, by adding an impact modifier, its impact resistance can be improved. The traditional modification is an elastomer, usually an ethylene-propylene rubber. It is generally believed that the rubber particles distributed in the semi-crystalline polypropylene matrix can form many stress concentration points at the interface to prevent local deformation and fracture propagation. A series of new impact modifiers are being promoted to replace EPDM. These olefin polymers fill the gap between low density polyethylene and traditional ethylene propylene elastomers.
The main commercial use of impact polypropylene PP pellets is for injection molded parts for automobiles, household goods and appliances.PP plastic granulesIts impact resistance, coloring ability and processing properties make it an ideal material, and the high melt flow rate medium impact resin grade has high fluidity.

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