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some knowledge about TPU in extruder

Views:10     Author:Site Editor     Publish Time: 2018-01-08      Origin:Site

TPU is a polymer material composed of two phenyl methane diisocyanate (MDI) or toluene diisocyanate (TDI) and other two isocyanate molecules and macromolecular polyols, low molecular polyols (chain extender). Its molecular structure is the rigid block and two-phenyl methane obtained by reaction of two-phenyl methane diisocyanate (MDI) or toluene diisocyanate (TDI) and chain Extender the flexible segments of isocyanate (MDI) or toluene diisocyanate (TDI) and other two isocyanate molecules are formed by alternating elastic chains.

Pu collectively referred to as polyurethane, TPU collectively referred to as thermoplastic polyurethane, polyurethane can be divided into thermoplastic ammonia (TPU) and thermosetting polyurethane (CPU), also can be called particles (solid state) and liquid.


how much temperature for Plastic raw materials TPU in the operation of the extruder 

TPU this plastic in the injection molding is too viscous, preferably with chrome screw, reduce the plastic and screw surface adhesion. And TPU is more sensitive to shear, design time compression than to consider.

Generally speaking, 160-230 degrees.

Generally in 180 ℃ or so, the higher can reach 220 ℃

This mainly depends on the TPU performance you use, as long as the supplier of TPU performance sheet on the processing temperature to do the line.

According to the hardness and type of change, generally in between 170-220, high hardness of the general processing temperature will be higher, polyester-type than the polyether-type processing temperature higher,

Nanjing Kairong Machinery can supply the whole of details and turnkey solution,and necessary.


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