The second purpose of blending and modifying plastic extrusion materials

The second purpose of blending modification of plastic extrusion materials is to improve melt fluidity and improve molding processing performance.

For example, the field of aerospace science requires high-temperature-resistant plastics. However, many high-temperature-resistant plastics have high melting points and poor melt fluidity, making them difficult to mold and process. Blending technology can solve this problem. For example, polyimide (PI) is refractory and insoluble, and it can be easily injected by blending it with polyphenylene sulfide (PPS) with good fluidity.

Since both plastics have good heat resistance, their blends remain excellent high-temperature materials. Mixing PS into polyphenylene ether (PPO) and ABS into PC can improve fluidity and processability. Rigid PVC often needs to be mixed with CPE, ACR and other resins to improve its processability. In addition, the crystallization behavior of crystalline polymers can also be controlled through blending.

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