Innovative breakthrough: Application of experimental twin-screw extruder in the production of TPE mixed iron powder plastic particles

Innovative breakthrough: Application of experimental twin-screw extruder in the production of TPE mixed iron powder plastic particles

In the field of plastics processing, thermoplastic elastomers (TPE) are favored for their superior physical properties and environmental properties. Recently, our company successfully applied experimental twin-screw extruder to the production of TPE mixed iron powder plastic particles, this innovative technology not only improves the production efficiency, but also broadens the application range of TPE.

The processing temperature of TPE materials is generally between 150-240 degrees Celsius, depending on the hardness and formulation of TPE. For soft materials, the processing temperature is usually 150-190 degrees Celsius, while for materials with higher hardness, a processing temperature of 180-240 degrees Celsius is required. In the production of TPE mixed iron powder, precise control of this temperature range is essential to ensure product quality.

TPE material is widely used in many fields because of its excellent flexibility, low temperature resistance and chemical resistance. These sectors include automotive parts, medical devices, sporting goods, electronics packaging, and building materials. The addition of TPE mixed iron powder plastic particles further expands its application prospects in the field of magnetic materials and electromagnetic shielding.

The experimental twin-screw extruder realizes the efficient production of TPE mixed iron powder plastic particles through its precise screw design and temperature control. The work flow of the extruder includes three steps: charging, heating and extrusion:

• Feeding: Solid plastic pellets are fed into the feeding device and then pushed into the barrel by the screw.
• Heating: In the barrel, an electric heating device heats solid plastic pellets to a molten state. The shear action of the screw helps the plastic to melt and mix fully.
• Extrusion: The molten plastic material passes through the extruder cylinder into the extruder head, where a specific shape profile is formed.

In the production of TPE mixed iron powder plastic particles, the screw design of twin-screw extruder is particularly important. It needs to be able to disperse the iron powder evenly to ensure its adequate mixing with the TPE material to produce particles with uniform properties. In addition, the long L/D ratio and high torque gear box of the twin-screw extruder provide sufficient reaction time for mixing, which is critical for the quality of the TPE mixed iron powder particles.

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