TPU Reaction Extrusion Compounding Machines

Technical Parameter of TPU Reaction Extrusion Compounding Machines

Description of TPU Reaction Extrusion Compounding Machines

TPU polyurethane reactive extrusion is an important processing technology for polymer materials, which generates thermoplastic polyurethane elastomers with excellent properties through the reaction of polyols and isocyanates.

The key contents of TPU formula composition, production process control points, raw material characteristics, and quality management help you comprehensively understand the technical points of TPU polyurethane reactive extrusion.

Main raw materials: 

polyols (polyether polyols, polyester polyols) provide flexibility and low temperature resistance; Isocyanates (MDI, TDI) provide excellent mechanical properties.

Addtive agent: 

Catalysts (organotin, amine) promote reactions;

Chain extenders (diols, triols) increase hardness and strength;

Foaming agents (physical, chemical) reduce density; Stabilizers protect products

Reference formula:

Polyether polyols: 40% -60%;

MDI：20%-40%；

1,4-Butanediol chain extender: 5% -10%;

Catalyst: 0.1% -1%;

Other additives

Application of TPU Reaction Extrusion Compounding Machines

TPU thermoplastic polyurethane is polymerized by diphenylmethane diisocyanate (MDI), toluene

diisocyanate (TDI), macromolecular polyols and chain extenders. It has excellent comprehensive

properties such as high strength, high toughness, wear resistance, and oil resistance, good

processing performance, and good biocompatibility. It is widely used in spandex, shoe materials,

3D printing filaments, 3C covers, films, functional films, composite leather, pipes, sports protection equipment and other fields.

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