TPU (thermoplastic polyurethane) material for medical catheter and production process of TPU material

The invention discloses a TPU material for a medical catheter and a production process of the TPU material, and belongs to the technical field of medical materials. Thermoplastic polyurethane is used as a matrix, modified starch and tungsten powder are added to synergistically improve the ultrasonic imaging performance, the modified starch has high porosity and can improve the ultrasonic imaging effect after being used for a medical catheter, then epsilon-polylysine is coated on the surface of the material, the epsilon-polylysine structure is rich in primary amine groups, and the ultrasonic imaging effect can be improved. Primary amine can react with residual acid anhydride, and then epsilon-polylysine is attached to the surface of the material, so that on one hand, the excellent antibacterial performance of epsilon-polylysine can be played, the material is endowed with an antibacterial effect, and the problem that epsilon-polylysine is easy to fall off when being purely used as a coating can be prevented; on