What is plastic extrusion material blending

Plastic extrusion material blending is to fully mix and knead two or more plastics, rubber (or elastomers), and additives under certain process conditions to produce polymer materials with novel structural characteristics and properties. a modification method.

The resulting new polymer system is called a plastic extrusion material blend, sometimes also called a plastic alloy (because two or more polymers are multi-component polymers prepared by physical or chemical methods. They The structure and performance characteristics are similar to those of metal alloys, so polymer blends are often called polymer alloys (Polymer Alloy).

In fact, there is a difference between "alloy" and "blend". Blends are generally considered to be a type of alloy, that is, plastic extrusion material alloys include plastic extrusion material blends. Blending modification of plastic extrusion materials is a common plastic modification method that goes hand in hand with filling modification.

The difference between it and plastic filling modification is that filling modification is mixing small molecular substances into the resin, while plastic blending modification is mixing high molecular substances into the resin. Since the blended modified composite system contains polymer substances, its compatibility is better than that of the filled system, and the modification has less impact on other properties of the original resin.

Plastic blending modification is currently one of the most effective methods for developing new polymer materials, and it is also the main way to achieve high performance, refinement, and functionalization of existing plastic varieties. Almost all the required properties of plastics can be obtained through blending modification. For example, PP has the advantages of low density, good transparency, high tensile strength, high hardness, and good heat resistance, but it has poor impact properties and poor stress cracking resistance. If blended with HDPE, the original properties of PP can be maintained. It also has the advantages of impact resistance, stress cracking resistance and low temperature resistance.

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